WO2008038350A1 - Composition de résine, matière pulvérisée et procédé de pulvérisation de la composition de résine - Google Patents
Composition de résine, matière pulvérisée et procédé de pulvérisation de la composition de résine Download PDFInfo
- Publication number
- WO2008038350A1 WO2008038350A1 PCT/JP2006/319174 JP2006319174W WO2008038350A1 WO 2008038350 A1 WO2008038350 A1 WO 2008038350A1 JP 2006319174 W JP2006319174 W JP 2006319174W WO 2008038350 A1 WO2008038350 A1 WO 2008038350A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- resin composition
- photocatalyst
- treatment
- weight
- pulverization
- Prior art date
Links
- 239000011342 resin composition Substances 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000011941 photocatalyst Substances 0.000 claims abstract description 68
- 238000010298 pulverizing process Methods 0.000 claims abstract description 28
- 229920000704 biodegradable plastic Polymers 0.000 claims abstract description 25
- 239000000126 substance Substances 0.000 claims description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 9
- 229910052719 titanium Inorganic materials 0.000 claims description 9
- 239000010936 titanium Substances 0.000 claims description 9
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical group O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 claims description 8
- 239000004094 surface-active agent Substances 0.000 claims description 8
- 229910052588 hydroxylapatite Inorganic materials 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 7
- 229920000747 poly(lactic acid) Polymers 0.000 claims description 6
- 239000004626 polylactic acid Substances 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 4
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 4
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 4
- VEALVRVVWBQVSL-UHFFFAOYSA-N strontium titanate Chemical compound [Sr+2].[O-][Ti]([O-])=O VEALVRVVWBQVSL-UHFFFAOYSA-N 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 2
- 230000015556 catabolic process Effects 0.000 abstract description 6
- 238000006731 degradation reaction Methods 0.000 abstract description 6
- 229910010272 inorganic material Inorganic materials 0.000 abstract description 5
- 239000011147 inorganic material Substances 0.000 abstract description 5
- 230000005764 inhibitory process Effects 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 description 17
- 239000011248 coating agent Substances 0.000 description 16
- 230000008569 process Effects 0.000 description 13
- 238000004898 kneading Methods 0.000 description 9
- 230000009471 action Effects 0.000 description 8
- 239000002253 acid Substances 0.000 description 7
- 230000006866 deterioration Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 244000005700 microbiome Species 0.000 description 6
- 230000003197 catalytic effect Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 229920001296 polysiloxane Polymers 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 239000008188 pellet Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-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
- 229920003232 aliphatic polyester Polymers 0.000 description 3
- 239000003945 anionic surfactant Substances 0.000 description 3
- 238000006065 biodegradation reaction Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- -1 polyethylene succinate Polymers 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 240000007930 Oxalis acetosella Species 0.000 description 2
- 235000008098 Oxalis acetosella Nutrition 0.000 description 2
- TZBPRYIIJAJUOY-UHFFFAOYSA-N Pirimiphos-ethyl Chemical compound CCOP(=S)(OCC)OC1=CC(C)=NC(N(CC)CC)=N1 TZBPRYIIJAJUOY-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920001432 poly(L-lactide) Polymers 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- VPGFETFTXLOADD-UHFFFAOYSA-N 1,1,2,2-tetrachloroethene;1,1,2-trichloroethene Chemical group ClC=C(Cl)Cl.ClC(Cl)=C(Cl)Cl VPGFETFTXLOADD-UHFFFAOYSA-N 0.000 description 1
- 244000241257 Cucumis melo Species 0.000 description 1
- 235000015510 Cucumis melo subsp melo Nutrition 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
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- FJJCIZWZNKZHII-UHFFFAOYSA-N [4,6-bis(cyanoamino)-1,3,5-triazin-2-yl]cyanamide Chemical compound N#CNC1=NC(NC#N)=NC(NC#N)=N1 FJJCIZWZNKZHII-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 229910052586 apatite Inorganic materials 0.000 description 1
- 229920006167 biodegradable resin Polymers 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 229940022769 d- lactic acid Drugs 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000019645 odor Nutrition 0.000 description 1
- 150000004045 organic chlorine compounds Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- VSIIXMUUUJUKCM-UHFFFAOYSA-D pentacalcium;fluoride;triphosphate Chemical compound [F-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O VSIIXMUUUJUKCM-UHFFFAOYSA-D 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920002961 polybutylene succinate Polymers 0.000 description 1
- 239000004631 polybutylene succinate Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 108090000765 processed proteins & peptides Proteins 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 229920005604 random copolymer Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000011882 ultra-fine particle Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
- C08L101/16—Compositions of unspecified macromolecular compounds the macromolecular compounds being biodegradable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/50—Mixing liquids with solids
- B01F23/56—Mixing liquids with solids by introducing solids in liquids, e.g. dispersing or dissolving
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
- C08J11/16—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with inorganic material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
-
- 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
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Definitions
- Resin composition powdered product, and disposal method of resin composition
- the present invention relates to a resin composition that can reduce the load of waste on the environment and a disposal method thereof.
- biodegradable plastics are decomposed by the action of microorganisms when buried in soil at the time of disposal.
- the decomposing process takes a considerable amount of time. This is because it takes a considerable time for the surface decomposition to start because the microorganisms in the ground decompose from the surface of the resin molded product.
- the decomposition was not promoted unless the conditions of high temperature and high humidity and the presence of many microorganisms were not met.
- Patent Document 1 proposes a method in which a composition in which a saccharide and a photocatalyst are added to a thermoplastic resin is used, and decomposition is accelerated by ultraviolet irradiation.
- the quality of the molded product is likely to deteriorate, such as causing a choking on the surface of the molded product by the action of the photocatalyst before disposal, and possibly reducing the physical properties of the molded product. It was not right.
- Patent Document 1 JP-A-9 309959 (Claims)
- the present invention has been made in view of the above-mentioned facts. During use, quality deterioration such as choking and physical property deterioration (for example, strength reduction) can be suppressed. It is an object to provide a resin composition that is moderately and rapidly decomposable and a disposal method for the resin composition. Still other objects and advantages of the present invention will become apparent from the following description.
- a resin composition comprising a biodegradable plastic and a photocatalyst coated with an inorganic substance, wherein the photocatalyst is added to 100 parts by weight of the biodegradable plastic.
- a resin composition containing 20 to 20 parts by weight is provided. According to the embodiment of the present invention, it is possible to obtain a resin composition in which quality deterioration is suppressed before the powder treatment and can be rapidly decomposed after the pulverization treatment.
- the biodegradable plastic is polylactic acid
- the photocatalyst is composed of titanium oxide, zinc oxide, zirconium oxide, strontium titanate, titanium hydroxyapatite, a modified product thereof, a composite thereof, and a mixture thereof. It is preferable that the photocatalyst is titanium hydroxyapatite, and that the resin composition contains 0.1 to 10% by weight of a surfactant.
- a pulverized product obtained by pulverizing the resin composition.
- the resin composition before the pulverization treatment is a molded product, and that after the pulverization treatment, any of ultraviolet irradiation treatment, stirring treatment, or water spray treatment is included.
- a method for discarding a resin composition comprising pulverizing the resin composition. According to the embodiment of the present invention, it is possible to rapidly decompose a resin composition in which deterioration of quality is suppressed before pulverization.
- the resin composition before the powdering process is a molded product, and after the powdering process, the resin composition includes at least one process selected from the group consisting of an ultraviolet irradiation process, a stirring process, and a water spray process, Is preferred.
- the invention's effect [0012] According to the present invention, there is provided a resin composition capable of suppressing quality deterioration before pulverization and rapidly decomposing after pulverization, and a method for discarding such a resin composition.
- FIG. 1 is a schematic diagram for explaining the action of a photocatalyst according to the present invention.
- FIG. 2 is a schematic view showing an example of production of a resin composition according to the present invention.
- FIG. 3 is a schematic view showing the state of decomposition of the resin composition according to the present invention.
- the resin composition according to the present invention is a resin composition comprising a biodegradable plastic and a photocatalyst coated with an inorganic substance, and the photocatalyst is added to 100 parts by weight of the biodegradable plastic. :! ⁇ 20 parts by weight included.
- the photocatalyst is coated with an inorganic substance in the resin composition according to the present invention, it is possible to suppress quality deterioration due to choking due to the action of the photocatalyst or a decrease in physical properties (such as a decrease in strength).
- the inorganic substance is removed from the surface of the photocatalyst, whereby the action of the photocatalyst can be made obvious and the resin composition can be rapidly decomposed.
- biodegradable plastics can be rapidly degraded.
- the biodegradable plastic according to the present invention is not particularly limited and is suitable from known ones. It can be selected as appropriate. Specifically, a biodegradable polysaccharide, peptide, aliphatic polyester, polyamino acid, polybutyl alcohol, polyamide, polyalkylene glycol, etc., and a copolymer containing at least one of these, etc. Are listed. In particular, aliphatic polyesters are practically suitable materials because of their excellent mixing and mass productivity.
- the aliphatic polyester is more preferably poly_L_lactic acid (PLLA), polylactic acid such as a random copolymer of L_lactic acid and D_lactic acid, or a derivative thereof.
- PLLA poly_L_lactic acid
- General polylactic acid is a crystalline polymer excellent in biodegradability with a melting point of about 160-170 ° C and a glass transition temperature of about 58 ° C.
- poly force prolatatone polyhydroxybutyric acid, polyhydroxyvaleric acid, polyethylene succinate, polybutylene succinate, polybutylene adipate, polyphosphonic acid, polydaricholic acid, polysuccinic acid ester, polysuccinic acid ester,
- Examples include microbial synthetic polyester.
- a photocatalyst itself does not change, but can be defined as a substance that promotes a reaction by receiving light. In other words, it is a substance that is excited by light, and this excited substance is a substance that has a catalytic action on a chemical change of another adjacent substance. Utilizing this catalytic action, the photocatalyst can purify the atmosphere (removal of harmful substances such as Nx, SOx and formaldehyde in the air) and deodorize (adsorption of bad odors such as cetaldehyde, ammonia and hydrogen sulfide).
- the photocatalyst according to the present invention can be considered as a photocatalyst in this sense.
- the catalytic action is used to accelerate the decomposition of the biodegradable plastic.
- the mechanism is not clear, but it may be via oxidative degradation.
- the type of the photocatalyst according to the present invention is not particularly limited and can be appropriately selected from known photocatalysts. Specifically, titanium oxide (especially anatase type titanium oxide), oxidation Zinc, zirconium oxide, strontium titanate, titanium hydroxyapatite (a part of calcium constituting calcium hydroxyapatite crystals is replaced by titanium), and modifications, composites and mixtures of these substances Can do.
- titanium oxide especially anatase type titanium oxide
- oxidation Zinc especially zirconium oxide
- strontium titanate titanium hydroxyapatite (a part of calcium constituting calcium hydroxyapatite crystals is replaced by titanium), and modifications, composites and mixtures of these substances Can do.
- the photocatalyst is titanium hydroxyapatite.
- the "modified product” means a material obtained by replacing a part of the elements of these materials with other elements, and the composite means a simple mixture such as a double salt. Rather, it means something that coexists with some interaction.
- the former include (anatase-type) titanium oxide fine particles with nanoscale metal ultrafine particles supported, or titanium hydroxyapatite calcium further substituted with other cations.
- examples thereof include a mask melon type photocatalyst in which the surface of titanium oxide is coated with inert silica.
- the shape of these photocatalysts may be any, but since it is mixed in the resin composition, it is generally preferable that the photocatalyst is in the form of a powder.
- the combination of the biodegradable plastic and the photocatalyst according to the present invention may be arbitrarily selected. However, several candidates are specifically selected and kneaded, and the obtained kneaded product or the powder of this kneaded product is used. It can be easily selected through comparison of results such as degradation test of crushed material (for example, acceleration test for choking and mechanical strength degradation).
- the ratio of the biodegradable plastic and the photocatalyst coated with an inorganic substance is 0.1 to 20 parts by weight of the photocatalyst with respect to 100 parts by weight of the biodegradable plastic. It is preferable that The “photocatalyst” in this case is an amount that does not contain any organic matter as a coating. If the photocatalyst is less than 0.1 part by weight, the decomposition effect after disposal is small. If it exceeds 20 parts by weight, practical defects such as difficulty in molding the resin composition are likely to be realized.
- the surface of the photocatalyst according to the present invention is coated with an inorganic substance.
- the organic matter itself is deteriorated by the action of the photocatalyst, and as a result, the decomposition of the resin composition may be promoted even before the pulverization treatment.
- the inorganic substance may be selected from any substances that suppress the catalytic action of the photocatalyst and can be removed from the photocatalyst by pulverization. By grinding process, It can be easily found by experiment whether or not the polishing agent is peeled off from the surface of the photocatalyst.
- the inorganic substance can be appropriately selected from known inorganic coating agents.
- Typical examples of inorganic coating agents include silicone-based hard coating materials such as Solgard (Nippon Dacro Shamrock), Quad Dyne (KADOWAKI), and Heatless Glass (Miyaki).
- silicone-based hard coating materials such as Solgard (Nippon Dacro Shamrock), Quad Dyne (KADOWAKI), and Heatless Glass (Miyaki).
- coating agents such as aluminum oxide type, zirconium oxide type, and magnesium oxide type. It suppresses the catalytic action of the photocatalyst, and the inorganic substance that coats the photocatalyst easily peels off by pulverization.
- a silicone-based hard coat material is preferred.
- the coating method and coating thickness of these inorganic materials and the weight ratio of the inorganic material to the photocatalyst may be appropriately selected according to the actual situation without any particular limitation. Commercial products may be used. In general, the weight ratio of the inorganic substance to the photocatalyst is preferably about 1:10 to about 100: 10.
- the resin composition according to the present invention necessarily contains a biodegradable plastic and a photocatalyst coated with an inorganic substance, but may contain other substances within the scope allowed for practical purposes. Good.
- plastics other than biodegradable plastics and additives other than photocatalysts coated with inorganic substances may coexist.
- a surfactant is preferably added in order to improve the dispersibility of the photocatalyst in the resin composition. If the dispersibility of the photocatalyst in the resin composition is low, the efficiency of the photocatalyst is lowered, the moldability becomes poor, and the mechanical properties (for example, strength) of the molded product are likely to be inconvenient.
- the surfactant can be appropriately selected from known ones according to the type of photocatalyst used and its inorganic substance (coating agent).
- any force of an anionic surfactant and a cationic surfactant can be preferably used.
- the amount used is not particularly limited, but in general, the surfactant is preferably contained in an amount of 0.1 to 10% by weight based on the total amount of the resin composition. If the content is less than 1% by weight, it is difficult to obtain a dispersion effect.
- the method for obtaining the resin composition according to the present invention by mixing the various substances described above can be appropriately selected from known methods without particular limitations.
- a uniaxial or biaxial kneading apparatus (such as an etastruder) is preferred.
- the above various substances may be dry blended, blended during kneading, or a combination thereof.
- the blend is preferably one that does not break the coating of the inorganic material on the photocatalyst as much as possible, but there is little need to worry about breaking the coating in a normal dry blending apparatus or kneading apparatus.
- the shape of the resin composition according to the present invention is often in the form of pellets when produced using a kneading apparatus with no particular restriction, but may be in the form of a powder. Generally speaking, it is a resin composition containing a biodegradable plastic and a photocatalyst coated with an inorganic substance, and the photocatalyst is in the range of 0.:! To 20 wt. Per 100 parts by weight of the biodegradable plastic. Any shape of the resin composition that satisfies the requirements of the resin composition contained in the resin and before the pulverization treatment according to the present invention is considered to be the resin composition according to the present invention.
- the resin composition according to the present invention includes those molded using these pellets and powders (for example, a molded product formed by injection molding).
- the molded product according to the present invention includes a three-dimensional molded product as well as a sheet-shaped product, a strand-shaped product or a thread-shaped product. Specifically, it may be used for any purpose.
- Electronic devices such as computers Cases, home appliances, furniture, toys, tableware and the like can be exemplified.
- the resin composition according to the present invention can be rapidly decomposed by pulverization. This is probably because the inorganic material that coats the photocatalyst peels off due to the energy given to the resin composition by the pulverization treatment, and the action of the photocatalyst becomes obvious. The photocatalyst itself is exposed, making it easier to irradiate light directly.
- FIG. 1 (1) shows a state in which the photocatalyst 3 coated with the inorganic substance 2 is dispersed in the resin composition 1 according to the present invention.
- (2) represents the state of the pulverized product 4 after the resin composition 1 is pulverized.
- the inorganic substance is peeled off from the photocatalyst 3, and the photocatalyst 3 is exposed to the outside.
- the resin composition around the photocatalyst 3 is It deteriorates rapidly and decomposes, whereby the decomposition of the entire resin composition can be promoted.
- the resin composition subjected to the pulverization treatment according to the present invention may have any shape.
- a molded article that has already been used for some purpose can be preferably used. That is, it is preferable to pulverize the molded product when it is discarded. As a result, quality degradation can be suppressed during use of the molded product, and rapid and powerful degradation of the biodegradable plastic can be achieved after disposal.
- the pulverization method and the apparatus used for pulverization according to the present invention can be appropriately selected from known ones without particular limitations.
- a crusher compression crushing
- cutter cutting crushing
- mill grinding
- size and shape of the pulverized product but generally a smaller size is advantageous. In general, those having a sphere equivalent diameter of 1 cm or less are preferred, and those having a diameter of 5 mm or less are more preferred.
- the powdered product according to the present invention is rapidly decomposed thereafter. Thereafter, the pulverized product may be carried on the ground or in the ground. At that time, microorganisms for biodegradation may be added, or water for promoting biodegradation may be replenished by spraying or the like. However, before or instead of such treatment, it is possible to include any treatment selected from the group consisting of ultraviolet irradiation treatment, stirring treatment and water spray treatment of the resin composition according to the present invention. It is preferable in terms of realizing rapid decomposition. You can combine these. You may combine heat processing. Furthermore, a microorganism for biodegradation may coexist.
- the effect of the photocatalyst, in which the inorganic substance is peeled off and the action of the photocatalyst becomes obvious, can be effectively utilized.
- the technique used for the ultraviolet irradiation process, the stirring process, and the water spray process can be appropriately selected from known techniques that are not particularly limited.
- the pulverized product may be in a dry state, a wet state with water, or a slurry state with water.
- Fig. 2 an example of the production of the resin composition is shown in Fig. 2, and the state of pulverization is shown in Fig. 3.
- the photocatalyst is dispersed in the inorganic coating agent solution to obtain a photocatalyst coated with the inorganic coating agent.
- a biodegradable resin and a surfactant into an etastruder for compound preparation, melt-kneaded, and then cooled with water to form a strand.
- a pelletizer to obtain pellets.
- a molded product 31 injection-molded using the pellets is pulverized to obtain a pulverized product 32.
- This pulverized product can be naturally decomposed with sunlight as shown in the lower right side of Fig. 3, and put into a tank, added with water, stirred and irradiated with ultraviolet rays as shown on the lower left side of the force. Decomposition may be promoted.
- titanium oxide 50 parts by weight was dispersed in 100 parts by weight of a silicone hard coat agent Solgard (Nihon Dacro Shamrock) as an inorganic coating agent solution.
- Solgard Nihon Dacro Shamrock
- titanium apatite As a photocatalyst, 50 parts by weight of titanium apatite was dispersed as an inorganic coating agent solution in 100 parts by weight of a silicone-based hard coating agent KADOWAKI.
- a twin screw extruder which is a kneading extruder containing 9 parts by weight of the above dispersion, 90 parts by weight of polylactic acid as a biodegradable plastic, and 3 parts by weight of anionic surfactant (w_304, manufactured by Asahi Kasei). And kneaded at 200 ° C.
- This composition was molded by an injection molding machine to produce a molded product (plate) for evaluation of 80 ⁇ 80 ⁇ 1 mm.
- the resin molded products of Examples and Comparative Examples were pulverized with a resin pulverizer to obtain a pulverized product having an average particle size of 5 mm, and then discarded in soil, and the weight loss rate was measured every 1, 3, and 6 months. did.
- the results are shown in Table 1.
- the weight retention in Table 1 shows the change in dry weight of the sample before and after burying in soil for 1, 3 and 6 months (ratio of weight after burying when the value before loading is 100%) It is. The choking was confirmed visually. Dispersibility was confirmed visually under a microscope.
- Example 1 Under normal use (36 months), there was no problem such as choking, and decomposition was promoted at the time of disposal. In Example 3, there was no problem such as choking under normal use (36 months). However, since the dispersibility of the photocatalyst particles was insufficient, the pulverized product was not uniformly dispersed as shown in the remarks about dispersibility. For this reason, the decomposition was inferior to Examples 1 and 2.
- Comparative Example 1 decomposition after disposal was slower and did not proceed easily as compared with Example.
- Comparative Example 2 decomposition was promoted at the time of disposal, but choking occurred under normal use (1 month).
- Example 1 5 kg of the same molded and pulverized product used in Example 1 was placed in a 60 L stainless steel container equipped with a stirrer shown in the lower left of FIG. 3 and irradiated with ultraviolet rays (light quantity: 10 mWZcm 2 ). 1st Z day LOOmL of water was sprayed, and the change in dry weight for each elapsed time was examined.
- the weight retention was 75% after 1 week, 57% after 2 weeks, and 32% after 3 weeks, confirming that the decomposition was promoted more than when discarded in soil.
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- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
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- Life Sciences & Earth Sciences (AREA)
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Abstract
La présente invention concerne une composition de résine contenant un plastique biodégradable et un photocatalyseur revêtu d'un matériau inorganique, de 0,1 à 20 parties en poids de photocatalyseur étant contenues pour 100 parties en poids du plastique biodégradable. En outre, on propose un procédé de projection de la composition de résine. Cette composition de résine empêche la dégradation de la qualité avant le traitement par pulvérisation et la dégradation rapide après le traitement par pulvérisation.
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JP2008536230A JP5200937B2 (ja) | 2006-09-27 | 2006-09-27 | 樹脂組成物、粉砕物および樹脂組成物の廃棄方法 |
PCT/JP2006/319174 WO2008038350A1 (fr) | 2006-09-27 | 2006-09-27 | Composition de résine, matière pulvérisée et procédé de pulvérisation de la composition de résine |
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PCT/JP2006/319174 WO2008038350A1 (fr) | 2006-09-27 | 2006-09-27 | Composition de résine, matière pulvérisée et procédé de pulvérisation de la composition de résine |
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Cited By (9)
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WO2009152345A1 (fr) | 2008-06-12 | 2009-12-17 | 3M Innovative Properties Company | Compositions hydrophiles biocompatibles |
WO2011085122A2 (fr) * | 2010-01-06 | 2011-07-14 | Graphicpak Corporation | Compositions de polymère hybride possédant une biodégradabilité accrue |
FR2964663A1 (fr) * | 2010-09-14 | 2012-03-16 | Oreal | Composition cosmetique comprenant une matiere colorante, ladite matiere colorante et procede de traitement cosmetique |
EP2481771A1 (fr) * | 2011-01-26 | 2012-08-01 | THÜRINGISCHES INSTITUT FÜR TEXTIL- UND KUNSTSTOFF-FORSCHUNG e.V. | Composition polymère et procédé de fabrication de produits ayant une biodégradabilité variable |
JP2013507156A (ja) * | 2009-10-08 | 2013-03-04 | サノフィ−アベンティス・ドイチュラント・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | 生分解性プラスチック部材を備えた薬物送達デバイス |
US9194065B2 (en) | 2009-12-17 | 2015-11-24 | 3M Innovative Properties Company | Dimensionally stable nonwoven fibrous webs and methods of making and using the same |
US9416485B2 (en) | 2009-12-17 | 2016-08-16 | 3M Innovative Properties Company | Process of making dimensionally stable nonwoven fibrous webs |
US9487893B2 (en) | 2009-03-31 | 2016-11-08 | 3M Innovative Properties Company | Dimensionally stable nonwoven fibrous webs and methods of making and using the same |
US9611572B2 (en) | 2010-10-14 | 2017-04-04 | 3M Innovative Properties Company | Dimensionally stable nonwoven fibrous webs, and methods of making and using the same |
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CN115715983B (zh) * | 2022-10-27 | 2024-01-16 | 北京化工大学 | 一种三元异质结光催化剂及其制备方法和在催化转化pla塑料中的应用 |
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- 2006-09-27 JP JP2008536230A patent/JP5200937B2/ja not_active Expired - Fee Related
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JPH10219088A (ja) * | 1997-02-13 | 1998-08-18 | Mitsubishi Plastics Ind Ltd | ポリ乳酸系重合体の分解性の制御方法および分解性フィルム・シートまたは該フィルム・シートからなる成形品 |
JP2004075727A (ja) * | 2002-08-12 | 2004-03-11 | Aichi Prefecture | 生分解速度の制御されたポリ乳酸系樹脂組成物およびその成形体 |
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EP2291285A1 (fr) * | 2008-06-12 | 2011-03-09 | 3M Innovative Properties Company | Compositions hydrophiles biocompatibles |
US10138576B2 (en) | 2008-06-12 | 2018-11-27 | 3M Innovative Properties Company | Biocompatible hydrophilic compositions |
EP2291285A4 (fr) * | 2008-06-12 | 2011-11-02 | 3M Innovative Properties Co | Compositions hydrophiles biocompatibles |
WO2009152345A1 (fr) | 2008-06-12 | 2009-12-17 | 3M Innovative Properties Company | Compositions hydrophiles biocompatibles |
US8858986B2 (en) | 2008-06-12 | 2014-10-14 | 3M Innovative Properties Company | Biocompatible hydrophilic compositions |
US9487893B2 (en) | 2009-03-31 | 2016-11-08 | 3M Innovative Properties Company | Dimensionally stable nonwoven fibrous webs and methods of making and using the same |
JP2013507156A (ja) * | 2009-10-08 | 2013-03-04 | サノフィ−アベンティス・ドイチュラント・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | 生分解性プラスチック部材を備えた薬物送達デバイス |
US9174000B2 (en) | 2009-10-08 | 2015-11-03 | Sanofi-Aventis Deutschland Gmbh | Drug delivery device with biodegradable plastic components |
US9194065B2 (en) | 2009-12-17 | 2015-11-24 | 3M Innovative Properties Company | Dimensionally stable nonwoven fibrous webs and methods of making and using the same |
US9416485B2 (en) | 2009-12-17 | 2016-08-16 | 3M Innovative Properties Company | Process of making dimensionally stable nonwoven fibrous webs |
US8871826B2 (en) | 2010-01-06 | 2014-10-28 | Graphicpak Corporation | Hybrid polymer compositions with enhanced bio-degradability |
WO2011085122A3 (fr) * | 2010-01-06 | 2011-12-15 | Graphicpak Corporation | Compositions de polymère hybride possédant une biodégradabilité accrue |
WO2011085122A2 (fr) * | 2010-01-06 | 2011-07-14 | Graphicpak Corporation | Compositions de polymère hybride possédant une biodégradabilité accrue |
WO2012035029A3 (fr) * | 2010-09-14 | 2012-10-04 | L'oreal | Composition cosmétique comprenant une substance colorante, ladite substance colorante et procédé cosmétique de traitement |
FR2964663A1 (fr) * | 2010-09-14 | 2012-03-16 | Oreal | Composition cosmetique comprenant une matiere colorante, ladite matiere colorante et procede de traitement cosmetique |
US9611572B2 (en) | 2010-10-14 | 2017-04-04 | 3M Innovative Properties Company | Dimensionally stable nonwoven fibrous webs, and methods of making and using the same |
EP2481771A1 (fr) * | 2011-01-26 | 2012-08-01 | THÜRINGISCHES INSTITUT FÜR TEXTIL- UND KUNSTSTOFF-FORSCHUNG e.V. | Composition polymère et procédé de fabrication de produits ayant une biodégradabilité variable |
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JP5200937B2 (ja) | 2013-06-05 |
JPWO2008038350A1 (ja) | 2010-01-28 |
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