WO2023146362A1 - 폴리(락트산-b-3-하이드록시프로피온산) 블록 공중합체를 포함하는 수지, 이를 포함하는 수지 조성물 및 수지 성형품 - Google Patents
폴리(락트산-b-3-하이드록시프로피온산) 블록 공중합체를 포함하는 수지, 이를 포함하는 수지 조성물 및 수지 성형품 Download PDFInfo
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- WO2023146362A1 WO2023146362A1 PCT/KR2023/001319 KR2023001319W WO2023146362A1 WO 2023146362 A1 WO2023146362 A1 WO 2023146362A1 KR 2023001319 W KR2023001319 W KR 2023001319W WO 2023146362 A1 WO2023146362 A1 WO 2023146362A1
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- WIPO (PCT)
- Prior art keywords
- resin
- poly
- acid
- block copolymer
- lactic acid
- Prior art date
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- 229920005989 resin Polymers 0.000 title claims abstract description 180
- 239000011347 resin Substances 0.000 title claims abstract description 180
- 229920001400 block copolymer Polymers 0.000 title claims abstract description 73
- 239000011342 resin composition Substances 0.000 title claims abstract description 34
- 239000013078 crystal Substances 0.000 claims description 61
- -1 poly(3-hydroxypropionic acid) Polymers 0.000 claims description 61
- 239000004626 polylactic acid Substances 0.000 claims description 32
- 229920000747 poly(lactic acid) Polymers 0.000 claims description 30
- 239000005022 packaging material Substances 0.000 claims description 20
- 239000000654 additive Substances 0.000 claims description 16
- 238000004806 packaging method and process Methods 0.000 claims description 13
- 239000012785 packaging film Substances 0.000 claims description 10
- 229920006280 packaging film Polymers 0.000 claims description 10
- 235000013305 food Nutrition 0.000 claims description 8
- 230000000996 additive effect Effects 0.000 claims description 7
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- 238000001125 extrusion Methods 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
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- 239000005021 flexible packaging material Substances 0.000 claims description 2
- JJTUDXZGHPGLLC-UHFFFAOYSA-N lactide Chemical compound CC1OC(=O)C(C)OC1=O JJTUDXZGHPGLLC-UHFFFAOYSA-N 0.000 description 17
- 238000006243 chemical reaction Methods 0.000 description 11
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- 238000004519 manufacturing process Methods 0.000 description 10
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- 238000000034 method Methods 0.000 description 8
- ALRHLSYJTWAHJZ-UHFFFAOYSA-M 3-hydroxypropionate Chemical compound OCCC([O-])=O ALRHLSYJTWAHJZ-UHFFFAOYSA-M 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 6
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- 238000003786 synthesis reaction Methods 0.000 description 6
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- 230000008025 crystallization Effects 0.000 description 5
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- 239000000203 mixture Substances 0.000 description 5
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- 239000004033 plastic Substances 0.000 description 5
- 238000006068 polycondensation reaction Methods 0.000 description 5
- ALRHLSYJTWAHJZ-UHFFFAOYSA-N 3-hydroxypropionic acid Chemical compound OCCC(O)=O ALRHLSYJTWAHJZ-UHFFFAOYSA-N 0.000 description 4
- JJTUDXZGHPGLLC-IMJSIDKUSA-N 4511-42-6 Chemical compound C[C@@H]1OC(=O)[C@H](C)OC1=O JJTUDXZGHPGLLC-IMJSIDKUSA-N 0.000 description 4
- 229920001730 Moisture cure polyurethane Polymers 0.000 description 4
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 238000002076 thermal analysis method Methods 0.000 description 4
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- JVTAAEKCZFNVCJ-REOHCLBHSA-N L-lactic acid Chemical compound C[C@H](O)C(O)=O JVTAAEKCZFNVCJ-REOHCLBHSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 229920000954 Polyglycolide Polymers 0.000 description 3
- 229920000331 Polyhydroxybutyrate Polymers 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000005015 poly(hydroxybutyrate) Substances 0.000 description 3
- 229920000218 poly(hydroxyvalerate) Polymers 0.000 description 3
- 229920001748 polybutylene Polymers 0.000 description 3
- 229920001610 polycaprolactone Polymers 0.000 description 3
- 239000004632 polycaprolactone Substances 0.000 description 3
- 239000004633 polyglycolic acid Substances 0.000 description 3
- 230000035484 reaction time Effects 0.000 description 3
- 238000001757 thermogravimetry curve Methods 0.000 description 3
- BOZRCGLDOHDZBP-UHFFFAOYSA-N 2-ethylhexanoic acid;tin Chemical compound [Sn].CCCCC(CC)C(O)=O BOZRCGLDOHDZBP-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- VEZXCJBBBCKRPI-UHFFFAOYSA-N beta-propiolactone Chemical compound O=C1CCO1 VEZXCJBBBCKRPI-UHFFFAOYSA-N 0.000 description 2
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- 230000005540 biological transmission Effects 0.000 description 2
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- 239000002537 cosmetic Substances 0.000 description 2
- 238000000113 differential scanning calorimetry Methods 0.000 description 2
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- 239000012760 heat stabilizer Substances 0.000 description 2
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- 239000004310 lactic acid Substances 0.000 description 2
- 235000014655 lactic acid Nutrition 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 229960000380 propiolactone Drugs 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000002453 shampoo Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000002411 thermogravimetry Methods 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- JJTUDXZGHPGLLC-ZXZARUISSA-N (3r,6s)-3,6-dimethyl-1,4-dioxane-2,5-dione Chemical compound C[C@H]1OC(=O)[C@H](C)OC1=O JJTUDXZGHPGLLC-ZXZARUISSA-N 0.000 description 1
- RBMHUYBJIYNRLY-UHFFFAOYSA-N 2-[(1-carboxy-1-hydroxyethyl)-hydroxyphosphoryl]-2-hydroxypropanoic acid Chemical compound OC(=O)C(O)(C)P(O)(=O)C(C)(O)C(O)=O RBMHUYBJIYNRLY-UHFFFAOYSA-N 0.000 description 1
- AWFYPPSBLUWMFQ-UHFFFAOYSA-N 2-[5-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]-1,3,4-oxadiazol-2-yl]-1-(1,4,6,7-tetrahydropyrazolo[4,3-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1=NN=C(O1)CC(=O)N1CC2=C(CC1)NN=C2 AWFYPPSBLUWMFQ-UHFFFAOYSA-N 0.000 description 1
- 108020002663 Aldehyde Dehydrogenase Proteins 0.000 description 1
- 239000004604 Blowing Agent Substances 0.000 description 1
- 229930182843 D-Lactic acid Natural products 0.000 description 1
- JVTAAEKCZFNVCJ-UWTATZPHSA-N D-lactic acid Chemical compound C[C@@H](O)C(O)=O JVTAAEKCZFNVCJ-UWTATZPHSA-N 0.000 description 1
- 241001302584 Escherichia coli str. K-12 substr. W3110 Species 0.000 description 1
- 229920000426 Microplastic Polymers 0.000 description 1
- 239000004235 Orange GGN Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 229920003232 aliphatic polyester Polymers 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000013533 biodegradable additive Substances 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 230000001851 biosynthetic effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000002361 compost Substances 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 229940022769 d- lactic acid Drugs 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 150000003903 lactic acid esters Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000008155 medical solution Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 238000006384 oligomerization reaction Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920001434 poly(D-lactide) Polymers 0.000 description 1
- 229920001432 poly(L-lactide) Polymers 0.000 description 1
- 239000005014 poly(hydroxyalkanoate) Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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- 238000007363 ring formation reaction Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- UQDJGEHQDNVPGU-UHFFFAOYSA-N serine phosphoethanolamine Chemical compound [NH3+]CCOP([O-])(=O)OCC([NH3+])C([O-])=O UQDJGEHQDNVPGU-UHFFFAOYSA-N 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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- 239000003381 stabilizer Substances 0.000 description 1
- 229920006302 stretch film Polymers 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000013076 target substance Substances 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
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Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/06—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from hydroxycarboxylic acids
- C08G63/08—Lactones or lactides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/91—Polymers modified by chemical after-treatment
- C08G63/912—Polymers modified by chemical after-treatment derived from hydroxycarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2230/00—Compositions for preparing biodegradable polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2250/00—Compositions for preparing crystalline polymers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Definitions
- the present invention relates to a resin containing a poly(lactic acid-b-3-hydroxypropionic acid) block copolymer, a resin composition containing the same, and a resin molded article.
- Petroleum-based resins such as polystyrene resin and polyethylene, which are currently used, can be mass-produced at low cost and have a variety of application fields. There is a problem that occurs. Recently, as the problem of microplastic discharge due to waste plastic has emerged socially, eco-friendly materials with 100% bio-component content are being developed.
- Polylactic acid resin is a plant-derived resin obtained from plants such as corn, and has attracted attention as an excellent eco-friendly material having biodegradable properties.
- conventional polylactic acid resins have poor elongation characteristics and are brittle, so there is a limit as a general-purpose resin.
- additives such as plasticizers should be mixed to improve flexibility, etc., but mainly used as plasticizers correspond to petroleum-based resins, and thus there is a problem in that eco-friendliness or biodegradation is not completely achieved.
- Patent Document 1 Japanese Unexamined Patent Publication No. 2006-070057, "Crystalline polylactic acid resin composition and film obtained using the same"
- An object of the present invention is to provide a resin having improved flexibility by controlling the thickness of a crystal layer of a resin including a poly(lactic acid-b-3-hydroxypropionic acid) block copolymer, a resin composition including the same, and a resin molded article.
- the present invention relates to a resin comprising a poly(lactic acid-b-3-hydroxypropionic acid) block copolymer, wherein the resin includes a crystalline part, the crystalline part includes a crystalline layer, and the crystalline layer Provides a resin having a thickness of 1.0 to 14.0 nm.
- the present invention provides a resin having a molecular weight of 50,000 to 500,000 g/mol.
- the present invention provides a resin having a Young's modulus of 0.1 GPa to 5.0 GPa.
- the present invention provides a resin comprising 10 to 30% by weight of poly(3-hydroxypropionic acid) and 90 to 70% by weight of polylactic acid.
- the present invention provides a resin composition containing the resin.
- the present invention provides a resin composition for a flexible packaging material in which the thickness of the crystal layer of the resin is 1.0 to 5.0 nm.
- the present invention provides a resin composition for a rigid packaging material in which the thickness of the crystal layer of the resin is 5.0 to 14.0 nm.
- the present invention provides a resin composition wherein the resin composition further comprises an additive.
- the present invention provides a resin composition in which the additive is biodegradable.
- the present invention provides a resin molded article comprising the resin composition.
- the present invention provides a resin molded product for a soft packaging material in which the thickness of the crystal layer of the resin is 1.0 to 5.0 nm.
- the present invention provides a resin molded article for a rigid packaging material in which the thickness of the crystal layer of the resin is 5.0 to 14.0 nm.
- the present invention provides a resin molded product selected from the group consisting of injection molded products, extrusion molded products, blow molded products, films, fibers and sheets.
- the present invention provides a soft packaging material containing the resin composition.
- the soft packaging material may be selected from the group consisting of a display protection film, a window attachment film, an envelope window film, a food packaging film, a bag, an industrial packaging film, and an agricultural film.
- the present invention provides a hard packaging material containing the resin composition.
- the hard packaging material may be selected from the group consisting of a disposable cup, a food packaging container, an easy-peel packaging, and an egg pack.
- the present invention can provide a resin with improved flexibility while maintaining biodegradability. More specifically, the present invention provides a resin having improved flexibility, a resin composition including the same, and a molded resin product, so that the molded product (product) can be used in various fields.
- FIG. 1 is a diagram illustrating a crystal part and an amorphous part of a resin according to an embodiment of the present invention.
- the inventors of the present invention completed the present invention by discovering that a resin with improved flexibility can be provided by controlling the thickness of the crystal layer of a resin containing a poly(lactic acid-b-3-hydroxypropionic acid) block copolymer within a specific range. I came to do it
- lactide monomer refers to a basic monomer synthesizing polylactic acid.
- lactide can be classified into L-lactide composed of L-lactic acid, D-lactide composed of D-lactic acid, and meso-lactide composed of one L-form and one D-form.
- a mixture of L-lactide and D-lactide in a weight ratio of 50:50 is referred to as D,L-lactide or rac-lactide.
- L- or D-polylactic acid (PLLA or PDLA) having a very high stereoregularity is obtained when polymerization is performed using only L-lactide or D-lactide having high optical purity among these lactides.
- lactide monomer is defined to include all types of lactide regardless of differences in properties of lactide according to each type and properties of polylactic acid formed therefrom.
- polylactic acid is synthesized by synthesizing a pre-polymer from the lactide monomer through a lactic acid ester through ring-opening polymerization and proceeding with a plurality of continuous synthesis. or an aliphatic polyester synthesized by dehydration polycondensation of lactic acid.
- the method for synthesizing polylactic acid includes ring-opening polymerization of lactide or dehydration polycondensation of lactic acid, but is not limited thereto, and may be the same as a commonly used polylactic acid production method.
- poly(3-hydroxypropionic acid, P(3HP)) is prepared by biosynthesis or chemical synthesis from 3-hydroxypropionate or propiolactone monomers. It refers to a polymer that has been synthesized and can also be called poly(3-hydroxypropionate)
- biosynthesis refers to synthesizing and producing a target substance using a living organism rather than chemical synthesis, and the organism may be a microorganism.
- chemical synthesis refers to synthesizing and preparing a target compound through a chemical reaction from a reaction compound, more specifically, through a ring-opening polymerization reaction from a propiolactone monomer.
- poly(3-hydroxypropionic acid) can be used without limitation if it is chemically synthesized as well as a biosynthetic method that can be synthesized, and poly(3-hydroxypropionate) or poly(3-hydroxypropionic acid in the art A known method known as biosynthesis or chemical synthesis of ) may also be used.
- block copolymer includes a polylactic acid prepolymer and a poly(3-hydroxypropionic acid) prepolymer, and is a copolymer in which the two prepolymers form a 'block'.
- poly(lactic acid-b-3-hydroxypropionic acid) (where b means block) is prepared by preparing a polylactic acid pre-polymer and a poly(3-hydroxypropionic acid) prepolymer, It can be prepared by dehydration polycondensation at each end of
- poly(lactic acid-b-3-hydroxypropionic acid) proceeds with a ring-opening polymerization reaction with a lactide monomer at the terminal of the prepolymer of poly(3-hydroxypropionic acid) after preparing a prepolymer of poly(3-hydroxypropionic acid). After that, it may be produced by elongation from the lactide monomer to form polylactic acid, but is not limited thereto.
- the term “resin comprising a poly(lactic acid-b-3-hydroxypropionic acid) block copolymer” refers to a liquid or solid resin before product molding.
- the resin is also referred to as resin. Even if it is simply a resin in the present invention, it can be understood as including a poly(lactic acid-b-3-hydroxypropionic acid) block copolymer.
- the term "resin composition containing a poly(lactic acid-b-3-hydroxypropionic acid) block copolymer” means adding additives in addition to the resin in a state before processing the resin into a molded article (product). means a composition that includes The additives may vary depending on the purpose of use or ingredients. Even if it is simply a resin composition in the present invention, it can be understood that it includes a poly(lactic acid-b-3-hydroxypropionic acid) block copolymer.
- the term "resin molded article comprising a poly(lactic acid-b-3-hydroxypropionic acid) block copolymer” refers to an article manufactured by processing the resin composition.
- the resin molded product may be variously manufactured in the form of an injection molded product, an extrusion molded product, a blow molded product, a film, a fiber, a sheet, and the like. Even if it is simply a resin molded article in the present invention, it can be understood that it includes a poly(lactic acid-b-3-hydroxypropionic acid) block copolymer.
- the molecular weight of the resin comprising the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer according to an embodiment of the present invention is 50,000 to 500,000 g/mol, 52,000 to 500,000 g/mol, and 54,000 to 500,000 g/mol. , 56,000 to 500,000 g/mol, 58,000 to 500,000 g/mol or 60,000 to 500,000 g/mol.
- the molecular weight of the resin comprising the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer according to another embodiment of the present invention is 50,000 to 480,000 g/mol, 52,000 to 480,000 g/mol, and 54,000 to 480,000 g/mol. , 56,000 to 480,000 g/mol, 58,000 to 480,000 g/mol or 60,000 to 480,000 g/mol.
- the molecular weight of the resin comprising the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer according to another embodiment of the present invention is 50,000 to 460,000 g/mol, 52,000 to 460,000 g/mol, and 54,000 to 460,000 g/mol. , 56,000 to 460,000 g/mol, 58,000 to 460,000 g/mol or 60,000 to 460,000 g/mol.
- the molecular weight of the resin comprising the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer according to another embodiment of the present invention is 50,000 to 440,000 g/mol, 52,000 to 440,000 g/mol, and 54,000 to 440,000 g/mol. , 56,000 to 440,000 g/mol, 58,000 to 440,000 g/mol or 60,000 to 440,000 g/mol.
- the molecular weight of the resin comprising the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer according to another embodiment of the present invention is 50,000 to 420,000 g/mol, 52,000 to 420,000 g/mol, and 54,000 to 420,000 g/mol. , 56,000 to 420,000 g/mol, 58,000 to 420,000 g/mol or 60,000 to 420,000 g/mol.
- the molecular weight of the resin comprising the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer according to another embodiment of the present invention is 50,000 to 400,000 g/mol, 52,000 to 400,000 g/mol, and 54,000 to 400,000 g/mol. , 56,000 to 400,000 g/mol, 58,000 to 400,000 g/mol or 60,000 to 400,000 g/mol.
- the molecular weight of the resin comprising the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer is 50,000 to 500,000 g/mol, 52,000 to 480,000 g/mol, 54,000 to 460,000 g/mol, 56,000 to 56,000 g/mol. 440,000 g/mol, 58,000 to 420,000 g/mol or 60,000 to 400,000 g/mol.
- the molecular weight of the resin may be the molecular weight of the entire resin including the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer.
- the molecular weight of the resin is outside the lower limit range, it is difficult to form the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer, and mechanical strength may be weak when manufacturing a resin molded product, and when it is outside the upper limit range , It is difficult to process into a resin, and it may be difficult to manufacture a resin with improved flexibility.
- the resin containing the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer according to an embodiment of the present invention contains 100% by weight of polylactic acid and poly(3-hydroxypropionic acid).
- the content of poly(3-hydroxypropionic acid) is 10.0% by weight to 30.0% by weight or 10.5% by weight. to 30.0 wt%, 11.0 wt% to 30.0 wt%, 11.5 wt% to 30.0 wt%, or 12.0 wt% to 30.0 wt%.
- the content of poly(3-hydroxypropionic acid) is 10.0 wt% to 29.5 wt%, 10.5 wt% to 29.5 wt%, 11.0 wt% to 29.5 wt%, 11.5 wt% to 29.5 wt%, or 12.0 wt% to 29.5 wt%.
- the content of poly(3-hydroxypropionic acid) is 10.0% by weight to 29.0% by weight or 10.5% by weight. to 29.0 wt%, 11.0 wt% to 29.0 wt%, 11.5 wt% to 29.0 wt%, or 12.0 wt% to 29.0 wt%.
- the content of poly(3-hydroxypropionic acid) is 10.0% by weight to 28.5% by weight or 10.5% by weight. to 28.5 wt%, 11.0 wt% to 28.5 wt%, 11.5 wt% to 28.5 wt%, or 12.0 wt% to 28.5 wt%.
- the content of poly(3-hydroxypropionic acid) is 10.0% by weight to 28.0% by weight or 10.5% by weight. to 28.0 wt%, 11.0 wt% to 28.0 wt%, 11.5 wt% to 28.0 wt%, or 12.0 wt% to 28.0 wt%.
- the resin containing the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer has a poly(3-hydroxypropionic acid) content of 10.0 wt% to 30.0 wt%, 10.5 wt% to 29.5 wt% %, 11.0 wt% to 29.0 wt%, 11.5 wt% to 28.5 wt%, or 12.0 to 28.0 wt%.
- the resin containing the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer according to another embodiment of the present invention has a polylactic acid content of 90.0 to 70.0% by weight, 89.5 to 70.0% by weight, 89.0% to 70.0% by weight. It may include 88.5 to 70.0% by weight or 88.0 to 70.0% by weight to 70.0% by weight.
- the content of polylactic acid is 90.0% to 70.5% by weight, 89.5% to 70.5% by weight, 89.0% by weight It may include 88.5% to 70.5% by weight, or 88.0% to 70.5% by weight, by weight to 70.5% by weight.
- the resin containing the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer according to another embodiment of the present invention has a polylactic acid content of 90.0% to 71.0% by weight, 89.5% to 71.0% by weight, 89.0% by weight It may include 88.5% to 71.0% by weight or 88.0% to 71.0% by weight, by weight to 71.0% by weight.
- the content of polylactic acid is 90.0% to 71.5% by weight, 89.5% to 71.5% by weight, 89.0% by weight It may include 88.5% to 71.5% by weight or 88.0% to 71.5% by weight, by weight to 71.5% by weight.
- the resin containing the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer according to another embodiment of the present invention has a polylactic acid content of 90.0% to 72.0% by weight, 89.5% to 72.0% by weight, 89.0% by weight It may include 88.5 to 72.0% by weight or 88.0 to 72.0% by weight to 72.0% by weight.
- the resin containing the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer has a polylactic acid content of 90.0 to 70.0% by weight, 89.5 to 70.5% by weight, 89.0 to 71.0% by weight, 88.5 to 88.5% by weight. 71.5% by weight or 88.0 to 72.0% by weight.
- the content of the polylactic acid is outside the above range, when manufacturing the resin and molded articles including the same, the strength is weakened, making it difficult to manufacture a desired molded article, or the polylactic acid content is relatively high, so that a resin having improved flexibility is manufactured. that can be difficult
- the resin including the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer according to an embodiment of the present invention may have semi-crystalline.
- the semi-crystalline may include a crystalline part and an amorphous part at the same time.
- the crystalline part refers to a part in which crystals are included in the resin
- the amorphous part refers to a part in which crystals are not formed other than the crystalline part, and refers to a part in which amorphous is present.
- the crystal part refers to a crystal layer in which crystals are formed in a resin containing a poly(lactic acid-b-3-hydroxypropionic acid) block copolymer.
- a portion of the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer is regularly arranged to form a folding portion, and the folded portion may be gathered to form a plate-like structure.
- a part of the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer is regularly arranged, and the folded part and the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer
- a part of means a layer in which a part of the folded part and a part of the combined part gather to form a plate shape.
- the amorphous part includes a part in which a portion of the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer has irregularly arranged regions.
- the amorphous portion may include a portion in which crystals in the resin including the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer have partial crystals in which crystals do not form a crystal layer.
- the amorphous portion may include a mobile amorphous phase and a rigid amorphous phase.
- the mobile amorphous phase and the stationary amorphous phase may be determined depending on whether or not they are bonded to the crystal part.
- the fixed amorphous phase is located at a boundary between the crystalline part and the amorphous part, and may be a portion combined with the crystalline part.
- the mobile amorphous phase is a portion of the amorphous portion that is not in contact with the crystalline portion, and may be a portion that is not combined with the crystalline portion.
- a crystalline part and an amorphous part may coexist below the melting temperature (Tm).
- the melting temperature (Tm) of the resin may be about 160 °C to 180 °C depending on the molecular weight.
- the resin containing the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer according to the present invention describes the crystallization of the resin in a state containing both crystalline and amorphous portions below the melting temperature (Tm).
- FIG. 1 is a view showing a crystal part and an amorphous part of a resin according to an embodiment of the present invention.
- Lc means a crystal layer of a resin
- the crystal layer (Lc) of the resin has a structure in which a portion of a poly(lactic acid-b-3-hydroxypropionic acid) block copolymer is regularly arranged to form a plate shape.
- an amorphous portion (La) is shown on one side of the crystal layer (Lc) of the resin.
- the amorphous portion (La) does not have a specific shape because a part of the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer is arranged irregularly.
- crystal thickness refers to the thickness of a crystal layer of a resin comprising a poly(lactic acid-b-3-hydroxypropionic acid) block copolymer.
- the crystal thickness can be obtained using data obtained by thermal analysis of the resin according to the present invention.
- the thermal analysis method includes Differential Scanning Calorimeter (DSC), Thermogravimetric Analysis (TGA), Thermomechanical Analysis (TMA), and Differential Thermal Analysis (DTA) according to measurement parameters.
- the crystal thickness of the resin may be measured using a scanning electron microscope (SEM) or a transmission electron microscope (TEM).
- the crystal thickness of the resin containing the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer can be obtained using measurement data by differential scanning calorimetry.
- the crystal thickness of the resin including the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer is obtained by using the following Equation 1 for the measurement data by the differential scanning calorimetry method. can be obtained:
- Equation 1 l is the crystal thickness
- T m is the melting temperature (K)
- K melting temperature
- K melting temperature
- ⁇ H f is the amount of enthalpy change relative to volume (J/m 3 )
- ⁇ is the surface free energy per unit area (J/m 2 ).
- Equation 1 is derived based on the Gibbs-Thomson equation based on the thermodynamic crystallization theory of Gibbs-Thomson, and represents a relational expression between crystal thickness, melting temperature, and thermodynamic coefficient.
- Each crystal thickness value can be derived according to each melting temperature of the crystalline polymer using Equation 1 above.
- the crystal thickness of the resin is obtained using the thermal analysis data as described above, if it is difficult to separate peaks from the thermal analysis data, a scanning electron microscope or transmission electron microscope is used to determine the crystal thickness of the resin. can be obtained.
- the thickness of the crystal layer of the resin containing the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer according to an embodiment of the present invention is 1.0 nm to 14.0 nm, 1.2 nm to 14.0 nm, and 1.4 nm to 14.0 nm. , 1.6 nm to 14.0 nm, 1.8 nm to 14.0 nm, 2.0 nm to 14.0 nm, 2.2 nm to 14.0 nm, 2.4 nm to 14.0 nm, 2.6 nm to 14.0 nm, 2.8 nm to 14.0 nm, or 3.0 nm to 14.0 nm. there is.
- the thickness of the crystal layer of the resin containing the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer according to another embodiment of the present invention is 1.0 nm to 11.8 nm, 1.2 nm to 11.8 nm, and 1.4 nm to 11.8 nm. , 1.6 nm to 11.8 nm, 1.8 nm to 11.8 nm, 2.0 nm to 11.8 nm, 2.2 nm to 11.8 nm, 2.4 nm to 11.8 nm, 2.6 nm to 11.8 nm, 2.8 nm to 11.8 nm, or 3.0 nm to 11.8 nm. there is.
- the thickness of the crystal layer of the resin containing the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer according to another embodiment of the present invention is 1.0 nm to 11.6 nm, 1.2 nm to 11.6 nm, and 1.4 nm to 11.6 nm. , 1.6 nm to 11.6 nm, 1.8 nm to 11.6 nm, 2.0 nm to 11.6 nm, 2.2 nm to 11.6 nm, 2.4 nm to 11.6 nm, 2.6 nm to 11.6 nm, 2.8 nm to 11.6 nm, or 3.0 nm to 11.6 nm. there is.
- the thickness of the crystal layer of the resin containing the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer according to another embodiment of the present invention is 1.0 nm to 11.4 nm, 1.2 nm to 11.4 nm, and 1.4 nm to 11.4 nm. , 1.6 nm to 11.4 nm, 1.8 nm to 11.4 nm, 2.0 nm to 11.4 nm, 2.2 nm to 11.4 nm, 2.4 nm to 11.4 nm, 2.6 nm to 11.4 nm, 2.8 nm to 11.4 nm, or 3.0 nm to 11.4 nm. there is.
- the thickness of the crystal layer of the resin containing the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer according to another embodiment of the present invention is 1.0 nm to 11.2 nm, 1.2 nm to 11.2 nm, and 1.4 nm to 11.2 nm. , 1.6 nm to 11.2 nm, 1.8 nm to 11.2 nm, 2.0 nm to 11.2 nm, 2.2 nm to 11.2 nm, 2.4 nm to 11.2 nm, 2.6 nm to 11.2 nm, 2.8 nm to 11.2 nm, or 3.0 nm to 11.2 nm. there is.
- the thickness of the crystal layer of the resin containing the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer according to another embodiment of the present invention is 1.0 nm to 11.0 nm, 1.2 nm to 11.0 nm, and 1.4 nm to 11.0 nm. , 1.6 nm to 11.0 nm, 1.8 nm to 11.0 nm, 2.0 nm to 11.0 nm, 2.2 nm to 11.0 nm, 2.4 nm to 11.0 nm, 2.6 nm to 11.0 nm, 2.8 nm to 11.0 nm, or 3.0 nm to 11.0 nm. there is.
- the thickness of the crystal layer of the resin containing the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer is 14.0 nm or less, 13.8 nm or less, 13.6 nm or less, 13.4 nm or less, 13.2 nm or less, 13.0 nm or less, 12.8 nm or less, 12.6 nm or less, 12.4 nm or less, 12.2 nm or less, 12.0 nm or less, 11.8 nm or less, 11.6 nm or less, 11.4 nm or less, 11.2 nm or less, 11.0 nm or less, 1.0 nm or more, 1.2 nm or more, 1.4 nm or more, 1.6 nm or more, 1.8 nm or more, 2.0 nm or more, 2.2 nm or more, 2.4 nm or more, 2.6 nm or more, 2.8 nm or more, or 3.0 nm or more.
- the Young's modulus of the resin rapidly increases, and the flexibility of the resin and molded products including the resin rapidly deteriorates, and thus, when manufacturing molded products including the resin, it may be easily broken ( brittleness), if it is out of the lower limit of the range, the strength (hardness) of the resin is rapidly lowered, and it may be difficult to manufacture a molded article containing the resin.
- Young's modulus used herein is an indication of elastic properties, and means initial tensile resistance, that is, elastic modulus and elastic modulus. In addition, it is the same as the tensile force, that is, the pulling force when elongated to the maximum position where it returns to its original state after elongation.
- Young's modulus is the amount of force required at the initial stage of very small elongation and is related to the rigidity and flexibility of the resin.
- a high Young's modulus value means a rigid and stiff resin
- a small Young's modulus value means a flexible resin.
- the Young's modulus of the resin containing the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer according to an embodiment of the present invention is continuously measured for force and strain while force is applied to the specimen in one direction. Axial stress is determined by dividing the load by the initial cross-sectional area of the specimen. An appropriate slope is obtained through the stress-strain curve while increasing or decreasing the force. A specific method for measuring the Young's modulus of the resin of the present invention is described in the following experimental example.
- the Young's modulus of the resin including the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer according to an embodiment of the present invention is 0.1 GPa to 5.0 GPa, 0.2 GPa to 5.0 GPa, 0.3 GPa to 5.0 GPa, and 0.4 GPa. to 5.0 GPa or 0.5 GPa to 5.0 GPa.
- the Young's modulus of the resin containing the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer according to another embodiment of the present invention is 0.1 GPa to 4.9 GPa, 0.2 GPa to 4.9 GPa, 0.3 GPa to 4.9 GPa, and 0.4 GPa. to 4.9 GPa or 0.5 GPa to 4.9 GPa.
- the Young's modulus of the resin including the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer according to another embodiment of the present invention is 0.1 GPa to 4.8 GPa, 0.2 GPa to 4.8 GPa, 0.3 GPa to 4.8 GPa, and 0.4 GPa. to 4.8 GPa or 0.5 GPa to 4.8 GPa.
- the Young's modulus of the resin containing the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer according to another embodiment of the present invention is 0.1 GPa to 4.7 GPa, 0.2 GPa to 4.7 GPa, 0.3 GPa to 4.7 GPa, and 0.4 GPa. to 4.7 GPa or 0.5 GPa to 4.7 GPa.
- the Young's modulus of the resin comprising the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer according to another embodiment of the present invention is 0.1 GPa to 4.6 GPa, 0.2 GPa to 4.6 GPa, 0.3 GPa to 4.6 GPa, and 0.4 GPa. to 4.6 GPa or 0.5 GPa to 4.6 GPa.
- the Young's modulus of the resin containing the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer is 0.1 GPa to 5.0 GPa, 0.2 GPa to 4.9 GPa, 0.3 GPa to 4.8 GPa, 0.4 GPa to 4.7 GPa. or 0.5 GPa to 4.6 GPa.
- a molded article containing a resin containing a poly(lactic acid-b-3-hydroxypropionic acid) block copolymer according to an embodiment of the present invention is processed into various molded articles (products) by a method such as injection molding or extrusion molding.
- Molded products can be used as injection molded products, extrusion molded products, blow molded products, films, fibers, sheets and the like.
- films such as unstretched, uniaxially stretched, biaxially stretched, and an inflation film.
- various fibers such as unstretched yarn, stretched yarn, and super-stretched yarn can be used.
- agricultural members such as fertilizer bags, sample bags, soil bags, flood prevention nets, bait straps, and windbreak nets; agricultural films such as mulching films; packaging films for administration and storage of medical solutions; packaging films for electronic components and semiconductor products; Buffer airbag film for product protection; packaging films for calendars, stationery, clothing, food, etc.; containers such as trays, blisters, knives, forks, spoons, tubes, plastic cans, pouches, containers, tanks, and baskets; tableware; hot fill containers, microwave oven cookware; Cosmetic containers, shampoo bottles, beverage bottles, cups, candy packaging, shrink labels, lid materials, fluent bags, easy-peel packaging, egg cartons, HDD packaging, compost bags, recording media packaging, shopping bags, wrapping of electrical and electronic components, etc.
- containers and packaging materials such as films; Various clothing, interior goods, carrier tape, film for thermal stencil printing, release film, porous film, display protection film, container bag, credit card, cash card, ID card, IC card, optical element, conductive emboss tape, garbage bag, It can be used as plastic bags, various nets, toothbrushes, stationery, clear files, etc.
- the resin may be molded into a soft packaging material.
- the soft packaging material may include a display protective film; Films for attaching windows to containers with attached windows; Envelope window attachment film; various packaging films such as food packaging films and wraps; various bags such as grocery bags, food storage bags, plastic bags, and garbage bags; industrial packaging films such as packaging wrap vinyl, stretch film, and wrapping vinyl; Agricultural films such as mulching films; and the like may be included, but are not limited to these examples.
- the resin may be molded into a hard packaging material.
- the hard packaging material is a disposable take-out cup, a food packaging container, an easy-peel packaging, an egg pack; containers such as trays, blisters, knives, forks, spoons, tubes, plastic cans, pouches, containers, tanks, and baskets; tableware; hot fill containers, microwave oven cookware; Cosmetic containers, shampoo bottles, beverage bottles, cups, and containers and packaging such as wrapping films for electrical and electronic components may be included, but are not limited to these examples.
- the term "resin composition” refers to a composition that further includes additives in addition to the resin in a state before processing the resin into a molded article.
- the additives may vary depending on the purpose of use or ingredients.
- a nucleating agent for improving processability, a nucleating agent, a blowing agent, a lubricant, a heat stabilizer, and the like may be included.
- additives for protection UV inhibitors, anti-oxidants, heat stabilizers, flame retardants, hydrolytic stabilizers, etc. may be included. .
- the additives may include additives of biodegradable components and the like depending on the components.
- additives for the biodegradable component include polylactic acid (PLA), polybutylene succinate (PBS), and polybutylene adipate-co-terephthalate (PBAT). ), poly(butylene adipate-co-succinate (PBAS), polycaprolactone (PCL), polyglycolic acid (PGA), polyester urethane , PEU), polyhydroxyalkanoate (PHA), polyhydroxybutyrate (PHB), polyhydroxyvalerate (PHV), etc., but are limited to these examples. It is not.
- the resin composition including the poly(lactic acid-b-3-hydroxypropionic acid) block copolymer according to an embodiment of the present invention may further include an additive.
- the additive may be composed of 100% biodegradable components.
- the biodegradable additive is polylactic acid, polybutylene succinate, polybutylene adipate-co-terephthalate, polybutylene adipate-co-succinate, polycaprolactone, polyglycolic acid, poly It may be ester urethane, polyhydroxyalkanate, polyhydroxybutyrate, polyhydroxyvalerate, etc., but is not limited to these examples.
- the resin composition containing the resin is soft packaging. It can be used for recycling or processed into resin molded products for soft packaging materials.
- the resin composition containing the resin is hard packaged. It can be used for recycling or processed into resin moldings for hard packaging materials.
- E. coli W3110 having GDH and ALDH enzyme genes was used as a strain for fermentation.
- M9 was used as a medium, and 3-hydroxypropionate was produced by fermentation using 70 g/L of glycerol as a substrate.
- Prepolymer A reaction time 6 hours, molecular weight 15,000 g/mol
- Prepolymer B reaction time 8 hours, molecular weight 20,000 g/mol
- Prepolymer C reaction time 12 hours, molecular weight 25,000 g/mol
- Lactide (25 g), poly(3-hydroxypropionate) prepolymer A (5 g) prepared in (1) above, and tin (II) 2-ethylhexanoate (0.014 g) as a catalyst were mixed into round The mixture was put into a flask, sufficiently vacuumed, and vacuum dried at room temperature for 2 hours.
- the flask was placed in a pre-heated oil bath at 180° C., and ring-opening polymerization was performed for 90 minutes after the polymer was completely melted. After the reaction was completed, the product was taken out, and then the product was liquefied at 140 ° C. under reduced pressure of ⁇ 1 torr for about 3 hours to remove the monomer, and finally poly(lactic acid-b-3-hydroxypropio nate) was prepared.
- a resin was prepared in the same manner as in Example 1, except that the ring-opening polymerization reaction was performed for 60 minutes.
- a resin was prepared in the same manner as in Example 1, except that the contents of lactide (25 g) and poly(3-hydroxypropionate) prepolymer B (5 g) were used.
- a resin was prepared in the same manner as in Example 1, except that the contents of lactide (25 g) and poly(3-hydroxypropionate) prepolymer A (2.5 g) were used.
- a resin was prepared in the same manner as in Example 1, except that the contents of lactide (25 g) and poly(3-hydroxypropionate) prepolymer C (5 g) were used.
- a resin was prepared in the same manner as in Example 1, except that the contents of lactide (25 g) and poly(3-hydroxypropionate) prepolymer C (2.5 g) were used.
- a resin was prepared in the same manner as in Example 1, except that the contents of lactide (25 g) and poly(3-hydroxypropionate) prepolymer B (2.5 g) were used.
- a resin was prepared in the same manner as in Example 1, except that the ring-opening polymerization reaction was performed for 40 minutes.
- a resin was prepared in the same manner as in Example 1, except that the ring-opening polymerization reaction was performed for 30 minutes.
- Lactide (25 g) and tin(II) 2-ethylhexanoate (0.014 g) as a catalyst were put into a round flask, and vacuum dried for 1 hour at room temperature by applying a sufficient vacuum.
- the flask was placed in an oil bath pre-heated to 180° C., and polymerization was performed for 90 minutes. After the reaction was completed, the product was taken out, and the product was devolatilized at 140° C. under a reduced pressure of ⁇ 1 torr for about 3 hours to remove the monomer, and finally a resin containing polylactic acid was prepared.
- Table 1 below shows the content and molecular weight of each component included in the resins prepared in Examples 1 to 9 and Comparative Example 1.
- Example 1 19 81 62,757 Example 2 22 78 62,766 Example 3 20 80 80,540 Example 4 14 86 95,068 Example 5 19 81 101,404 Example 6 10 90 246,300 Example 7 13 87 132,898 Example 8 26 74 51,524 Example 9 29 71 46,213 Comparative Example 1 0 100 248,133
- the thermal melting characteristics of the resin according to the present invention were determined in accordance with JIS K 7121 and JIS K 7122 by accurately weighing about 5 mg of the sample using a DSC 3-Mettler Toledo as a DSC (differential scanning calorimeter).
- the 2 nd heating curve was separated using the DSC measurement data, and the crystal thickness of the resin was calculated using Equation 1 for the thermogram profile.
- the Young's modulus of the resin was measured by the ASTM E 111 method, and the Young's modulus was measured using Model 5966 (Instron) equipment, the specimen standard was ASTM D 412F, and the measurement condition was an elongation speed of 0.001 mm/mm/s.
- Table 2 below shows values obtained by measuring the thickness and Young's modulus of the crystal layer of the resin prepared in Examples 1 to 9 and Comparative Example 1.
- Example 1 Thickness of crystal layer (Lc) (nm) Young's modulus (Gpa) Example 1 9.62 1.02 Example 2 9.76 1.13 Example 3 10.43 1.17 Example 4 11.12 1.44 Example 5 11.33 1.24 Example 6 12.22 1.54 Example 7 10.26 1.52 Example 8 9.09 0.84 Example 9 4.59 0.56 Comparative Example 1 14.2 4.11
- the present invention may provide a resin having improved flexibility from a resin having a crystal layer thickness within a specific range, a resin composition including the same, and a resin molded article.
- a resin having improved flexibility from a resin having a thickness of the crystal layer of 1.0 to 14.0 nm, a resin composition including the same, and a resin molded product may be provided.
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Abstract
Description
P(3HP)의 함량 (wt%) | PLA의 함량 (wt%) | 중량평균분자량 (g/mol) | |
실시예 1 | 19 | 81 | 62,757 |
실시예 2 | 22 | 78 | 62,766 |
실시예 3 | 20 | 80 | 80,540 |
실시예 4 | 14 | 86 | 95,068 |
실시예 5 | 19 | 81 | 101,404 |
실시예 6 | 10 | 90 | 246,300 |
실시예 7 | 13 | 87 | 132,898 |
실시예 8 | 26 | 74 | 51,524 |
실시예 9 | 29 | 71 | 46,213 |
비교예 1 | 0 | 100 | 248,133 |
결정층의 두께 (Lc) (nm) | 영률 (Gpa) | |
실시예 1 | 9.62 | 1.02 |
실시예 2 | 9.76 | 1.13 |
실시예 3 | 10.43 | 1.17 |
실시예 4 | 11.12 | 1.44 |
실시예 5 | 11.33 | 1.24 |
실시예 6 | 12.22 | 1.54 |
실시예 7 | 10.26 | 1.52 |
실시예 8 | 9.09 | 0.84 |
실시예 9 | 4.59 | 0.56 |
비교예 1 | 14.2 | 4.11 |
Claims (17)
- 폴리(락트산-b-3-하이드록시프로피온산)블록 공중합체를 포함하는 수지에 있어서,상기 수지는 결정부(crystalline part)를 포함하고,상기 결정부는 결정층을 포함하고,상기 결정층의 두께가 1.0 내지 14.0 nm인 것을 특징으로 하는, 수지.
- 제1항에 있어서,상기 수지의 분자량이 50,000 내지 500,000 g/mol인 것을 특징으로 하는, 수지.
- 제1항에 있어서,상기 수지의 영률이 0.1 GPa 내지 5.0 GPa인 것을 특징으로 하는, 수지.
- 제1항에 있어서,상기 수지는 10 내지 30 중량%의 폴리(3-하이드록시프로피온산) 및 90 내지 70 중량%의 폴리락트산을 포함하는 것을 특징으로 하는, 수지.
- 제1항 내지 제4항 중 어느 한 항에 따른 수지를 포함하는 것을 특징으로 하는, 수지 조성물.
- 제5항에 있어서,상기 수지의 결정층의 두께가 1.0 내지 5.0 nm인 것을 특징으로 하는, 연질 포장재용 수지 조성물.
- 제5항에 있어서,상기 수지의 결정층의 두께가 5.0 내지 14.0 nm 인 것을 특징으로 하는, 경질 포장재용 수지 조성물.
- 제5항에 있어서,상기 수지 조성물은 첨가제를 더 포함하는 것을 특징으로 하는, 수지 조성물.
- 제8항에 있어서,상기 첨가제는 생분해성인 것을 특징으로 하는, 수지 조성물.
- 제5항에 따른 수지 조성물을 포함하는 것을 특징으로 하는, 수지 성형품.
- 제10항에 있어서,상기 수지의 결정층의 두께가 1.0 내지 5.0 nm인 것을 특징으로 하는, 연질 포장재용 수지 성형품.
- 제10항에 있어서,상기 수지의 결정층의 두께가 5.0 내지 14.0 nm인 것을 특징으로 하는, 경질 포장재용 수지 성형품.
- 제10항에 있어서,상기 수지 성형품은 사출 성형품, 압출 성형품, 블로우 성형품, 필름, 섬유 및 시트로 이루어진 군으로부터 선택되는 것을 특징으로 하는, 수지 성형품.
- 제5항에 따른 수지 조성물을 포함하는 것을 특징으로 하는, 연질 포장재.
- 제14항에 있어서,상기 연질 포장재는 디스플레이 보호용 필름, 창부착용 필름, 봉투창용 필름, 식품 포장용 필름, 백(bag), 공업용 포장재 필름 및 농업용 필름으로 이루어진 군으로부터 선택되는 것을 특징으로 하는, 연질 포장재.
- 제5항에 따른 수지 조성물을 포함하는 것을 특징으로 하는, 경질 포장재.
- 제16항에 있어서,상기 경질 포장재는 일회용 컵, 식품 포장 용기, 이지필 포장 및 달걀 팩으로 이루어진 군으로부터 선택되는 것을 특징으로 하는, 경질 포장재.
Priority Applications (3)
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US18/681,562 US20240343862A1 (en) | 2022-01-28 | 2023-01-30 | Resin comprising poly(lactic acid-b-3-hydroxypropionic acid) block copolymer, and resin composition and resin molded product comprising same |
EP23747403.6A EP4353766A1 (en) | 2022-01-28 | 2023-01-30 | Resin comprising poly(lactic acid-b-3-hydroxypropionic acid) block copolymer, and resin composition and resin molded product comprising same |
CN202380012749.5A CN117642449A (zh) | 2022-01-28 | 2023-01-30 | 包含聚(乳酸-b-3-羟基丙酸)嵌段共聚物的树脂、包含其的树脂组合物和树脂模制品 |
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KR10-2022-0013486 | 2022-01-28 | ||
KR20220013486 | 2022-01-28 | ||
KR10-2023-0011048 | 2023-01-27 | ||
KR1020230011048A KR20230116725A (ko) | 2022-01-28 | 2023-01-27 | 폴리(락트산-b-3-하이드록시프로피온산) 블록 공중합체를 포함하는 수지, 이를 포함하는 수지 조성물 및 수지 성형품 |
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WO2023146362A1 true WO2023146362A1 (ko) | 2023-08-03 |
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PCT/KR2023/001319 WO2023146362A1 (ko) | 2022-01-28 | 2023-01-30 | 폴리(락트산-b-3-하이드록시프로피온산) 블록 공중합체를 포함하는 수지, 이를 포함하는 수지 조성물 및 수지 성형품 |
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US (1) | US20240343862A1 (ko) |
EP (1) | EP4353766A1 (ko) |
WO (1) | WO2023146362A1 (ko) |
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- 2023-01-30 US US18/681,562 patent/US20240343862A1/en active Pending
- 2023-01-30 WO PCT/KR2023/001319 patent/WO2023146362A1/ko active Application Filing
- 2023-01-30 EP EP23747403.6A patent/EP4353766A1/en active Pending
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EP4353766A1 (en) | 2024-04-17 |
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