CN117924865A - Antibacterial ecological degradable cutlery box and degradation method thereof - Google Patents
Antibacterial ecological degradable cutlery box and degradation method thereof Download PDFInfo
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- CN117924865A CN117924865A CN202410328854.6A CN202410328854A CN117924865A CN 117924865 A CN117924865 A CN 117924865A CN 202410328854 A CN202410328854 A CN 202410328854A CN 117924865 A CN117924865 A CN 117924865A
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- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000006731 degradation reaction Methods 0.000 title abstract description 16
- 230000015556 catabolic process Effects 0.000 title abstract description 14
- -1 polypropylene Polymers 0.000 claims abstract description 47
- 239000004743 Polypropylene Substances 0.000 claims abstract description 43
- 229920001155 polypropylene Polymers 0.000 claims abstract description 43
- 239000001913 cellulose Substances 0.000 claims abstract description 42
- 229920002678 cellulose Polymers 0.000 claims abstract description 42
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 19
- 239000002994 raw material Substances 0.000 claims abstract description 19
- XHQSLVIGPHXVAK-UHFFFAOYSA-K iron(3+);octadecanoate Chemical compound [Fe+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XHQSLVIGPHXVAK-UHFFFAOYSA-K 0.000 claims abstract description 17
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000007822 coupling agent Substances 0.000 claims abstract description 9
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 6
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 6
- 239000004014 plasticizer Substances 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims description 43
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 41
- 235000010980 cellulose Nutrition 0.000 claims description 38
- 239000000463 material Substances 0.000 claims description 26
- 238000010438 heat treatment Methods 0.000 claims description 23
- 239000003795 chemical substances by application Substances 0.000 claims description 22
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 21
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 20
- 238000002156 mixing Methods 0.000 claims description 20
- 238000006243 chemical reaction Methods 0.000 claims description 19
- 238000002360 preparation method Methods 0.000 claims description 19
- SJRJJKPEHAURKC-UHFFFAOYSA-N N-Methylmorpholine Chemical compound CN1CCOCC1 SJRJJKPEHAURKC-UHFFFAOYSA-N 0.000 claims description 18
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 18
- 238000001782 photodegradation Methods 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 16
- 239000008367 deionised water Substances 0.000 claims description 16
- 229910021641 deionized water Inorganic materials 0.000 claims description 16
- 239000000243 solution Substances 0.000 claims description 16
- 238000005406 washing Methods 0.000 claims description 16
- 239000000178 monomer Substances 0.000 claims description 14
- 239000011259 mixed solution Substances 0.000 claims description 13
- WYURNTSHIVDZCO-UHFFFAOYSA-N tetrahydrofuran Substances C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 12
- 239000002244 precipitate Substances 0.000 claims description 12
- 239000002904 solvent Substances 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 9
- 239000003999 initiator Substances 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 9
- 229920005604 random copolymer Polymers 0.000 claims description 9
- PYSGFFTXMUWEOT-UHFFFAOYSA-N 3-(dimethylamino)propan-1-ol Chemical compound CN(C)CCCO PYSGFFTXMUWEOT-UHFFFAOYSA-N 0.000 claims description 8
- OFNISBHGPNMTMS-UHFFFAOYSA-N 3-methylideneoxolane-2,5-dione Chemical compound C=C1CC(=O)OC1=O OFNISBHGPNMTMS-UHFFFAOYSA-N 0.000 claims description 7
- 235000019441 ethanol Nutrition 0.000 claims description 7
- SLYCYWCVSGPDFR-UHFFFAOYSA-N octadecyltrimethoxysilane Chemical compound CCCCCCCCCCCCCCCCCC[Si](OC)(OC)OC SLYCYWCVSGPDFR-UHFFFAOYSA-N 0.000 claims description 7
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical compound CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 claims description 7
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 claims description 7
- MLRVZFYXUZQSRU-UHFFFAOYSA-N 1-chlorohexane Chemical compound CCCCCCCl MLRVZFYXUZQSRU-UHFFFAOYSA-N 0.000 claims description 6
- GPIQOFWTZXXOOV-UHFFFAOYSA-N 2-chloro-4,6-dimethoxy-1,3,5-triazine Chemical compound COC1=NC(Cl)=NC(OC)=N1 GPIQOFWTZXXOOV-UHFFFAOYSA-N 0.000 claims description 6
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229920000168 Microcrystalline cellulose Polymers 0.000 claims description 6
- 239000002361 compost Substances 0.000 claims description 6
- 239000008187 granular material Substances 0.000 claims description 6
- 238000001746 injection moulding Methods 0.000 claims description 6
- 235000019813 microcrystalline cellulose Nutrition 0.000 claims description 6
- 239000008108 microcrystalline cellulose Substances 0.000 claims description 6
- 229940016286 microcrystalline cellulose Drugs 0.000 claims description 6
- JRMUNVKIHCOMHV-UHFFFAOYSA-M tetrabutylammonium bromide Chemical compound [Br-].CCCC[N+](CCCC)(CCCC)CCCC JRMUNVKIHCOMHV-UHFFFAOYSA-M 0.000 claims description 6
- QWGRWMMWNDWRQN-UHFFFAOYSA-N 2-methylpropane-1,3-diol Chemical compound OCC(C)CO QWGRWMMWNDWRQN-UHFFFAOYSA-N 0.000 claims description 5
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 238000007142 ring opening reaction Methods 0.000 claims description 5
- 235000012054 meals Nutrition 0.000 claims description 4
- YPFDHNVEDLHUCE-UHFFFAOYSA-N 1,3-propanediol Substances OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 claims description 3
- 229940035437 1,3-propanediol Drugs 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000005286 illumination Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229920000166 polytrimethylene carbonate Polymers 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 3
- 238000002390 rotary evaporation Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 230000008961 swelling Effects 0.000 claims description 3
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 3
- 239000002699 waste material Substances 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- 238000007259 addition reaction Methods 0.000 claims description 2
- 238000005886 esterification reaction Methods 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 238000010025 steaming Methods 0.000 claims description 2
- 230000000845 anti-microbial effect Effects 0.000 claims 6
- 239000004599 antimicrobial Substances 0.000 claims 6
- 230000003213 activating effect Effects 0.000 claims 1
- 230000003113 alkalizing effect Effects 0.000 claims 1
- 230000000593 degrading effect Effects 0.000 claims 1
- 230000003301 hydrolyzing effect Effects 0.000 claims 1
- 238000001027 hydrothermal synthesis Methods 0.000 claims 1
- 238000010534 nucleophilic substitution reaction Methods 0.000 claims 1
- 238000006068 polycondensation reaction Methods 0.000 claims 1
- 238000001953 recrystallisation Methods 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 8
- 238000009264 composting Methods 0.000 abstract description 7
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract description 5
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 4
- 239000005543 nano-size silicon particle Substances 0.000 abstract description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 abstract description 2
- 239000002861 polymer material Substances 0.000 abstract description 2
- 150000003242 quaternary ammonium salts Chemical group 0.000 abstract description 2
- 239000012792 core layer Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 10
- ZFOZVQLOBQUTQQ-UHFFFAOYSA-N Tributyl citrate Chemical compound CCCCOC(=O)CC(O)(C(=O)OCCCC)CC(=O)OCCCC ZFOZVQLOBQUTQQ-UHFFFAOYSA-N 0.000 description 6
- 241000588724 Escherichia coli Species 0.000 description 4
- 230000001580 bacterial effect Effects 0.000 description 4
- 210000003608 fece Anatomy 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- 244000269722 Thea sinensis Species 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 150000008442 polyphenolic compounds Chemical class 0.000 description 3
- 235000013824 polyphenols Nutrition 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 239000006087 Silane Coupling Agent Substances 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 239000011941 photocatalyst Substances 0.000 description 2
- 239000003504 photosensitizing agent Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- QZCLKYGREBVARF-UHFFFAOYSA-N Acetyl tributyl citrate Chemical compound CCCCOC(=O)CC(C(=O)OCCCC)(OC(C)=O)CC(=O)OCCCC QZCLKYGREBVARF-UHFFFAOYSA-N 0.000 description 1
- 229920001817 Agar Polymers 0.000 description 1
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- IMQLKJBTEOYOSI-GPIVLXJGSA-N Inositol-hexakisphosphate Chemical compound OP(O)(=O)O[C@H]1[C@H](OP(O)(O)=O)[C@@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@@H]1OP(O)(O)=O IMQLKJBTEOYOSI-GPIVLXJGSA-N 0.000 description 1
- IMQLKJBTEOYOSI-UHFFFAOYSA-N Phytic acid Natural products OP(O)(=O)OC1C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C1OP(O)(O)=O IMQLKJBTEOYOSI-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000008272 agar Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- 150000008064 anhydrides Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000007233 catalytic pyrolysis Methods 0.000 description 1
- 238000007385 chemical modification Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- FRVCGRDGKAINSV-UHFFFAOYSA-L iron(2+);octadecanoate Chemical compound [Fe+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O FRVCGRDGKAINSV-UHFFFAOYSA-L 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 239000003895 organic fertilizer Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000006303 photolysis reaction Methods 0.000 description 1
- 230000015843 photosynthesis, light reaction Effects 0.000 description 1
- 235000002949 phytic acid Nutrition 0.000 description 1
- 229940068041 phytic acid Drugs 0.000 description 1
- 239000000467 phytic acid Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- APVVRLGIFCYZHJ-UHFFFAOYSA-N trioctyl 2-hydroxypropane-1,2,3-tricarboxylate Chemical compound CCCCCCCCOC(=O)CC(O)(C(=O)OCCCCCCCC)CC(=O)OCCCCCCCC APVVRLGIFCYZHJ-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 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
-
- 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
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The application discloses an antibacterial ecological degradable cutlery box and a degradation method thereof, belonging to the technical field of biodegradable high polymer materials, and comprising the following raw materials in parts by weight: 20-25 parts of modified polypropylene master batch, 5-10 parts of functionalized cellulose, 0.2-2 parts of plasticizer, 1-2 parts of coupling agent, 0.1-2 parts of antioxidant and 0.1-0.2 part of compatilizer; according to the application, the modified polypropylene master batch is added, the antibacterial activity of the cutlery box is improved by introducing the quaternary ammonium salt structure and the carboxyl, meanwhile, the hydrophilicity and the degradability are improved, the functionalized cellulose is prepared from the modified cellulose and the functionalized photodegradants, the modified cellulose contains hydroxyl groups, the hydrophilicity and the degradability of the cutlery box are improved, the functionalized photodegradants are prepared by taking nano titanium dioxide with the surface adsorbing ferric stearate as a core layer and taking nano silicon dioxide as a shell layer structure, the degradation of the cutlery box is further accelerated, the nondegradable polypropylene is removed by composting landfill, and the degradability of the cutlery box is improved.
Description
Technical Field
The invention relates to the technical field of biodegradable high polymer materials, in particular to an antibacterial ecological degradable cutlery box and a degradation method thereof.
Background
Compared with other polymers, the chemical stability and mechanical properties of the polypropylene have great advantages, but polypropylene products are easy to be infected with bacteria, and the propagation of bacterial microorganisms threatens the health of people, so that the antibacterial polypropylene becomes a hot spot direction for the research of antibacterial plastics. In the prior art, the antibacterial polypropylene has been successfully applied to the fields of food packaging, medical treatment, washing and nursing and the like.
In the prior art, the antibacterial performance of the polypropylene is usually improved by adding inorganic nano particles such as nano silver, nano zinc and the like, but the conventional nano particles are only expensive, have low molecular weight and are easy to cause chemical migration to influence the antibacterial activity, and meanwhile, the conventional polypropylene treatment mode comprises the steps of heat energy incineration recovery, fuel preparation by catalytic pyrolysis, direct utilization of classified processing and modification utilization.
Therefore, how to provide an antibacterial ecological degradable cutlery box with good antibacterial performance and easy degradation and a degradation method thereof is a technical problem to be solved at present.
Disclosure of Invention
The invention aims to provide an antibacterial ecological degradable cutlery box and a degradation method thereof, which are used for solving the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
An antibacterial ecological degradable cutlery box comprises the following raw materials in parts by weight: 20-25 parts of modified polypropylene master batch, 5-10 parts of functionalized cellulose, 0.2-2 parts of plasticizer, 1-2 parts of coupling agent, 0.1-2 parts of antioxidant and 0.1-0.2 part of compatilizer;
The antibacterial ecological degradable cutlery box is prepared by the following steps:
Step S1, mixing functionalized cellulose and a coupling agent in parts by weight at a high speed for 5-10min, and keeping the rotating speed at 1000-1200rpm to obtain surface-treated cellulose;
S2, placing the modified polypropylene master batch, the plasticizer and the antioxidant in a high-speed mixer according to parts by weight, adding the surface-treated cellulose and the compatilizer prepared in the step S1, and stirring and mixing for 8-12min at the rotating speed of 1300-1500rpm to obtain a mixed material;
s3, placing the mixed material prepared in the step S2 into a double-screw extruder for melt blending, wherein the extrusion temperature of the double-screw extruder is set to 160-175 ℃, and extruding and granulating to obtain blending granules;
And S4, placing the blended granules obtained in the step S3 into an injection molding machine, and performing injection molding through a cutlery box die to obtain the antibacterial ecological degradable cutlery box.
Further, the plasticizer is one of glycerin, tributyl citrate, trioctyl citrate and acetyl tributyl citrate.
Further, the coupling agent is one of silane coupling agent KH-570, aluminate coupling agent and titanate coupling agent.
Further, the antioxidant is one of phytic acid, tea polyphenol and pentaerythritol ester.
Further, the compatilizer is any one or two of PP-g-ST and PP-g-MAH, and the two are compounded according to any ratio.
Further, the preparation method of the modified polypropylene master batch comprises the following steps:
Step A1, dissolving itaconic anhydride and 3-dimethylamino-1-propanol into anhydrous THF, heating to 75-85 ℃, stirring for 0.65-0.85h, adding 2-chloro-4, 6-dimethoxy-1, 3, 5-triazine and N-methylmorpholine, stirring and placing at 0 ℃ for 1-2h, filtering, adding triethylamine, continuously stirring for 10-20min, dissolving the materials into the anhydrous THF again, and recrystallizing to obtain a monomer A, wherein the dosage ratio of itaconic anhydride, 3-dimethylamino-1-propanol, anhydrous THF, 2-chloro-4, 6-dimethoxy-1, 3, 5-triazine, N-methylmorpholine, triethylamine and the added anhydrous THF is 3-5g:2.8-4.6g:50-60mL:5.2-7.8g:3.2-5.2mL:4-6mL:35-45mL, in the reaction process, anhydrous THF is used as a solvent, 2-chloro-4, 6-dimethoxy-1, 3, 5-triazine and N-methylmorpholine are used as condensing agents, triethylamine is used as an acid binding agent, anhydride groups on itaconic anhydride and hydroxyl groups on 3-dimethylamino-1-propanol are subjected to ring opening esterification reaction, so as to obtain a monomer A, wherein the structural formula of the monomer A is shown as follows:
。
Step A2, dissolving the monomer A in anhydrous DMF, adding 1-chlorohexane, heating to reflux and stirring for reaction for 12-16h, removing the solvent, and drying at 60 ℃ for 8-12h to obtain an antibacterial active component, wherein the dosage ratio of the monomer A to the anhydrous DMF to the 1-chlorohexane is 3-5g:30-50mL:4-6mL, in the reaction process, absolute ethyl alcohol is used as a solvent, and a monomer A reacts with 1-chlorohexane Menshutkin to obtain an antibacterial active component;
The structural formula of the antibacterial active component is shown as follows:
。
Step A3, swelling the random copolymer polypropylene and the anhydrous acetone for 2-4 hours, adding the antibacterial active component, the mixed solution a of the anhydrous acetone and the initiator, mixing for 5-10 minutes in a high-speed mixer at 450-550rpm, and extruding by a double-screw extruder to obtain a modified polypropylene master batch, wherein the dosage ratio of the random copolymer polypropylene to the anhydrous acetone to the mixed solution a to the initiator is 12-15g:65-75mL:35mL:0.8-2g, and the dosage ratio of the antibacterial active component to the anhydrous acetone in the mixed solution a is 3-5g: and 35mL, in the reaction process, under the action of an initiator, the random copolymer polypropylene and the antibacterial active component undergo a melt grafting reaction to obtain a modified polypropylene master batch, and under the action of the initiator, the monomer A is grafted into the random copolymer polypropylene through melt grafting.
Further, the extrusion process of the twin-screw extruder is as follows: one region 170-180 ℃, two regions 180-185 ℃, three regions 185-190 ℃, four regions 190-195 ℃, five regions 195-200 ℃, machine head temperature 200 ℃, feeding frequency 25-40Hz and screw rotation speed 200rpm.
Further, the random copolymer polypropylene is one or more of TopileneR, 200, P, QPR, BR4220 and BR4101 mixed in an arbitrary ratio.
Further, the initiator is one or more of benzoyl peroxide, cumene peroxide and di-tert-butyl peroxide, and the initiator is mixed according to any ratio.
Further, the preparation method of the functionalized cellulose comprises the following steps:
Step B1, mixing microcrystalline cellulose and sodium hydroxide solution, stirring for 2 hours at room temperature, then adding epichlorohydrin, heating to 55-65 ℃, continuously stirring for 5-8 hours, filtering to remove solvent, then adding 2-methyl-1, 3-propanediol and isopropanol, heating to 75-85 ℃, continuously reacting for 3-5 hours, filtering to remove isopropanol, washing with absolute ethyl alcohol for 3-5 times, and drying at 60 ℃ for 8-12 hours after washing is finished to obtain modified cellulose, wherein the dosage ratio of microcrystalline cellulose, sodium hydroxide solution, epichlorohydrin, 2-methyl-1, 3-propanediol and isopropanol is 1-3g:30-90mL:20-60mL:0.8-2.4mL:35-55mL, wherein the mass fraction of the sodium hydroxide solution is 20%;
In the reaction process, 2-methyl-1, 3-propylene glycol is selected as a raw material, hydroxyl is introduced, the hydrophilicity of cellulose is improved, and meanwhile, unsaturated double bonds contained in the 2-methyl-1, 3-propylene glycol can undergo graft copolymerization to participate in the subsequent chemical reaction process;
step B2, adding modified cellulose into anhydrous DMF, performing ultrasonic dispersion, dropwise adding tetrabutylammonium bromide, a functional photodegradation agent and anhydrous DMF mixed solution B, heating to 110-120 ℃ after the dropwise addition is finished, stirring for 2-3h, centrifuging after the reaction is finished, washing the precipitate with 40% ethanol solution for 3-5 times, and drying to obtain the functional cellulose, wherein the dosage ratio of the modified cellulose to the anhydrous DMF to the mixed solution B is 1-3g:35-55mL:10mL of the mixed solution b, wherein the dosage ratio of tetrabutylammonium bromide, the functional photodegradation agent and anhydrous DMF is 0.1g:0.8-1.2g:10mL, in the reaction process, tetrabutylammonium bromide is used as a catalyst, and hydroxyl on the modified cellulose and epoxy on the functionalized photodegradation agent are subjected to ring-opening addition reaction to obtain the functionalized cellulose.
Further, the preparation method of the functional photodegradation agent comprises the following steps:
Adding titanium chloride and deionized water into absolute ethyl alcohol, heating to 35-45 ℃, stirring at 600-800rpm, adding ferric stearate, stirring until the ferric stearate is fully dissolved, heating to 110-130 ℃, stirring and reacting for 8-12h, cooling to room temperature, washing the precipitate with deionized water and absolute ethyl alcohol for 3-5 times in sequence to obtain nano titanium dioxide particles with the surface adsorbing ferric stearate molecules, dispersing the nano titanium dioxide particles in cyclohexane, stirring at 1500-2500rpm for 15-25s, adding tetramethoxysilane and trimethoxyoctadecylsilane, heating to 45-55 ℃, and continuing stirring and reacting for 3-5h to obtain the modified photodegradation agent;
Wherein the dosage ratio of the titanium chloride, the deionized water, the absolute ethyl alcohol, the ferric stearate, the cyclohexane, the tetramethoxysilane and the trimethoxyoctadecylsilane is 1-3mL:15-45mL:60-70mL:0.2-0.4g:15-25mL: 5-15. Mu.L: in the reaction process, 60-180 mu L of nano titanium dioxide particles with monodisperse and surface adsorbed ferric stearate molecules are prepared by an LSS method, and tetramethoxysilane and trimethoxyoctadecylsilane are used as silicon sources to be coated to obtain the modified photodegradation agent.
Step C2, after ultrasonic mixing of the modified photodegradant, deionized water, absolute ethyl alcohol and KH560 for 30min, stirring at room temperature for reaction for 6-8h, centrifuging, washing the precipitate with absolute ethyl alcohol and deionized water for 3-5 times in sequence, and drying at 55 ℃ for 8-16h to obtain the functional photodegradant; wherein, the dosage ratio of the modified photodegradant, deionized water, absolute ethyl alcohol and KH560 is 1-2g:2-6mL:25-35mL:0.1-0.2mL, and the functionalized photodegradation agent is obtained by KH560 treatment.
In the application, the ferric stearate is used as a photosensitizer, has good catalytic performance on polypropylene, and the titanium dioxide is used as a common photodegradation agent, so that photodegradation of polypropylene can be accelerated, and the coating of the silicon dioxide can not only enhance the compatibility between the modified photocatalyst and a base material, but also further accelerate the ecological degradation process of polypropylene.
Further, the degradation method of the antibacterial ecological degradable cutlery box comprises the following steps:
Making the waste meal box into powder by a high-speed universal pulverizer, dispersing in ethanol solution by ultrasonic, exposing to ultraviolet rays with the wavelength of 315-400nm and the illumination intensity of 6000 mu w/cm 2 for 7-15d, steaming to remove the solvent by rotary evaporation, placing the precipitate in a compost material, burying to the depth of 20cm, and treating at room temperature for 160-200 d.
Further, the dosage ratio of the antibacterial ecological degradable cutlery box, the ethanol solution and the compost material is 3-5g:100mL:2-5kg.
Further, the composting materials are derived from the actual production process of the organic fertilizer and are collected from the Weifang, huanan environmental protection technology Co., ltd in Shandong province, and the composting materials are prepared from the following raw materials: 95% of cow dung, 3% of plant ash and 2% of rice chaff.
Further, the composting is carried out by adopting a strip pile type composting system.
The antibacterial ecological degradable cutlery box prepared by the application is subjected to photolysis under the irradiation of ultraviolet light, electrons in the nano titanium dioxide are excited to generate holes with strong oxidizing capability, the holes react with hydroxyl ions in the cutlery box to generate hydroxyl radicals, most of organic matters in the cutlery box are degraded by utilizing the hydroxyl radicals, and then the organic matters are placed in a composting material, wherein cow dung in the composting material contains a large amount of bacterial communities, and the difficult degradable polypropylene in the cutlery box can be effectively removed.
Compared with the prior art, the invention has the following beneficial effects: in order to improve the antibacterial performance and the degradability of the antibacterial ecological degradable cutlery box, the invention starts from three aspects, firstly, modified polypropylene master batch is added into the cutlery box raw material, quaternary ammonium salt structure and carboxyl are introduced into the polypropylene molecular chain through chemical modification, the phenomenon that antibacterial components are small and easy to migrate in the prior art is avoided, the antibacterial activity of the cutlery box is improved, the hydrophilic performance and the degradability of the cutlery box are improved, secondly, functionalized cellulose is added, the functionalized cellulose is prepared from the modified cellulose and the functionalized photodegradable agent, the modified cellulose contains hydroxyl groups, the hydrophilicity and the degradability of the cutlery box are further improved, the functionalized photodegradable agent is prepared from nano titanium dioxide particles with surface adsorbed ferric stearate molecules as a nuclear layer, nano silicon dioxide is prepared from a shell layer structure, the ferric stearate is used as a photosensitizer, the nano titanium dioxide has good catalytic performance on polypropylene, the nano titanium dioxide is used as a good photodegradable agent, the photodegradation of the polypropylene can be accelerated, the coating of the nano silicon dioxide not only can enhance the compatibility between the modified photocatalyst and a base material, but also can further accelerate the ecological degradation process of the polypropylene, and the water-soluble and the degradable bacterial manure in the cutlery box can be further removed by burying the method, and the thermal degradation of the cutlery box can be further improved.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment 1, preferred, this embodiment provides a method for preparing a functionalized photodegradable agent, including the steps of:
Step C1, adding 2mL of titanium chloride and 30mL of deionized water into 65mL of absolute ethyl alcohol, heating to 40 ℃, stirring at the rotation speed of 700rpm, adding 0.3g of ferric stearate, stirring until the mixture is fully dissolved, heating to 120 ℃, stirring for reaction for 10 hours, cooling to room temperature, washing the precipitate with deionized water and the absolute ethyl alcohol for 4 times in sequence after the reaction is finished, obtaining nano titanium dioxide particles with the surface adsorbing ferric stearate molecules, dispersing the nano titanium dioxide particles in 20mL of cyclohexane, stirring for 20s at 2000rpm, adding 10 mu L of tetramethoxysilane and 120 mu L of trimethoxyoctadecylsilane, heating to 50 ℃, and continuing stirring for reaction for 4 hours to obtain the modified photodegradation agent;
And C2, after 1.5g of the modified photodegradant, 4mL of deionized water, 30mL of absolute ethyl alcohol and 0.15mL of KH560 are ultrasonically mixed for 30min, stirring and reacting for 7h at room temperature, centrifuging, washing the precipitate with the absolute ethyl alcohol and the deionized water for 4 times in sequence, and drying at 55 ℃ for 12h to obtain the functionalized photodegradant.
Embodiment 2, preferred, this embodiment provides a method for preparing functionalized cellulose, comprising the steps of:
Step B1, mixing 2g of microcrystalline cellulose and 60mL of 20% sodium hydroxide solution, stirring for 2 hours at room temperature, then adding 40mL of epichlorohydrin, heating to 60 ℃, continuously stirring for 6.5 hours, filtering to remove the solvent, then adding 1.6mL of 2-alkenyl-1, 3-propanediol and 45mL of isopropanol, heating to 80 ℃, continuously reacting for 4 hours, filtering after the reaction is finished, removing the isopropanol, washing for 4 times by using absolute ethyl alcohol, and drying for 10 hours at 60 ℃ after the washing is finished to obtain modified cellulose;
And B2, adding 2g of modified cellulose into 45mL of anhydrous DMF, performing ultrasonic dispersion, dropwise adding 0.1g of tetrabutylammonium bromide, 1g of the functionalized photodegradant prepared in the embodiment 1 and 10mL of anhydrous DMF mixed solution B, heating to 115 ℃ after the dropwise addition is finished, stirring for 2.5h, centrifuging after the reaction is finished, washing the precipitate with 40% ethanol solution for 4 times, and drying to obtain the functionalized cellulose.
Embodiment 3, preferred, this embodiment provides a method for preparing a modified polypropylene masterbatch, comprising the steps of:
Step A1, dissolving 4g of itaconic anhydride and 3.7g of 3-dimethylamino-1-propanol in 55mL of anhydrous THF, heating to 80 ℃, stirring for 0.75h, adding 6.5g of 2-chloro-4, 6-dimethoxy-1, 3, 5-triazine and 4.2mL of N-methylmorpholine, stirring and placing at 0 ℃ for 1.5h, filtering, adding 5mL of triethylamine, continuing stirring for 15min, dissolving the obtained product in 40mL of anhydrous THF again, and recrystallizing to obtain a monomer A;
Step A2, dissolving 4g of monomer A in 40mL of anhydrous DMF, adding 5mL of 1-chlorohexane, heating to reflux, stirring and reacting for 14h, removing the solvent, and drying at 60 ℃ for 10h to obtain an antibacterial active component;
Step A3, swelling 13.5g of random copolymer polypropylene and 70mL of anhydrous acetone for 3 hours, adding 4g of antibacterial active component, 35mL of mixed solution a of anhydrous acetone and 1.4g of cumene peroxide, mixing for 7.5 minutes in a high-speed mixer at 500rpm, and extruding by a double-screw extruder to obtain a modified polypropylene master batch, wherein the extrusion process of the double-screw extruder comprises the following steps: one 175 ℃, two 182 ℃, three 186 ℃, four 192 ℃, five 198 ℃, head temperature 200 ℃, feeding frequency 30Hz, screw rotation speed 200rpm.
Embodiment 4, preferred, the embodiment provides an antibacterial ecologically degradable cutlery box comprising the steps of:
22.5 parts of modified polypropylene master batch prepared in example 3, 7.5 parts of functionalized cellulose prepared in example 2, 1.1 parts of tributyl citrate, 1.5 parts of silane coupling agent KH-570, 1.1 parts of tea polyphenol and 0.15 part of PP-g-MAH;
The antibacterial ecological degradable cutlery box is prepared by the following steps:
Step S1, mixing functionalized cellulose and a coupling agent in parts by weight at a high speed for 7.5min, and keeping the rotating speed at 1100rpm to obtain surface-treated cellulose;
S2, placing the modified polypropylene master batch, tributyl citrate and tea polyphenol in a high-speed mixer according to parts by weight, adding the surface-treated cellulose and PP-g-MAH prepared in the step S1, and stirring and mixing for 10min at the rotating speed of 1400rpm to obtain a mixed material;
S3, placing the mixed material prepared in the step S2 into a double-screw extruder for melt blending, wherein the extrusion temperature of the double-screw extruder is set to 165 ℃, and extruding and granulating to obtain blending granules; and S4, placing the blended granules obtained in the step S3 into an injection molding machine, and performing injection molding through a cutlery box die to obtain the antibacterial ecological degradable cutlery box.
Comparative example 1
The iron stearate in example 1 was removed, the remaining raw materials and preparation process were kept unchanged, the prepared material was replaced with the functionalized photodegradant in example 2, the remaining raw materials and preparation process were kept unchanged, and the prepared material was replaced with the functionalized cellulose in example 4, the remaining raw materials and preparation process were kept unchanged.
Comparative example 2
The titanium chloride in example 1 was removed, the remaining raw materials and preparation process were kept unchanged, the prepared material was replaced with the functionalized photodegradant in example 2, the remaining raw materials and preparation process were kept unchanged, and the prepared material was replaced with the functionalized cellulose in example 4, the remaining raw materials and preparation process were kept unchanged.
Comparative example 3
The functionalized photodegradants in example 2 were removed, the remaining raw materials and the preparation process were kept unchanged, and the prepared material was replaced with functionalized cellulose in example 4, the remaining raw materials and the preparation process were kept unchanged.
Comparative example 4
The 3-dimethylamino-1-propanol of example 3 was removed, the remaining raw materials and the preparation process were kept unchanged, and the prepared material was replaced with the modified polypropylene masterbatch of example 4, the remaining raw materials and the preparation process were kept unchanged.
Comparative example 5
The antibacterial active component in example 3 was removed, the remaining raw materials and the preparation process were kept unchanged, and the prepared material was replaced with the modified polypropylene masterbatch in example 4, and the remaining raw materials and the preparation process were kept unchanged.
Application example
Preferably, the application example provides a degradation method of an antibacterial ecological degradable cutlery box, which comprises the following steps:
4g of the waste cutlery boxes prepared in the example 4 and the comparative examples 1-5 and used are respectively prepared into powder by a high-speed universal pulverizer, the powder is dispersed in 100mL of ethanol solution with the mass fraction of 40%, the powder is exposed to light for 11d under the ultraviolet rays with the wavelength of 365nm and the illumination intensity of 6000 mu w/cm 2, the solvent is removed by rotary evaporation, the precipitate is placed in 3.5kg of compost materials, the landfill depth is 20cm, and the treatment is carried out at room temperature for 180d, wherein the compost materials are obtained from the actual production process of organic fertilizers and are collected from Weifang Huanan environmental protection technology Co., utility, weifang, shandong, and the raw material proportion of compost construction is as follows: 95% of cow dung, 3% of plant ash and 2% of rice chaff.
Performance detection
Bacteriostasis: taking the meal box sample pieces with the diameters of 5mm prepared in the example 4 and the comparative examples 1-5 respectively, pasting the meal box sample pieces on an agar plate, taking 0.5mL of escherichia coli bacteria with the bacterial content of 106 bacteria/mL, dripping the escherichia coli bacteria on the plate, uniformly coating the escherichia coli bacteria on the plate, placing the escherichia coli bacteria on a constant-temperature incubator for culturing for 24 hours at 37 ℃, observing and measuring the diameters of bacteria inhibition zones, and specific test data are shown in a table 1;
contact angle: the cutlery box sample pieces with the diameter of 5mm prepared in the example 4 and the comparative examples 1-5 are respectively taken, the contact angle of the cutlery box is measured on a JCD-1000 type contactor by a still drop method by distilled water, each sample is measured for 3 times, the average value is taken, and specific test data are shown in the table 1;
Determination of degradation Rate: after weighing the cutlery box sample pieces prepared in example 4 and comparative examples 1-5, carrying out ecological degradation sequentially through application examples, and calculating the degradation rate of the sample through weight loss, wherein test data are shown in table 1:
TABLE 1
。
As can be seen from Table 1, the cutlery box prepared in example 4 has more excellent antibacterial and hydrophilic properties than those of comparative examples 1-5, and at the same time, it is also more easily degraded.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. An antibacterial ecological degradable cutlery box, which is characterized in that: the material comprises the following raw materials in parts by weight: 20-25 parts of modified polypropylene master batch, 5-10 parts of functionalized cellulose, 0.2-2 parts of plasticizer, 1-2 parts of coupling agent, 0.1-2 parts of antioxidant and 0.1-0.2 part of compatilizer;
The antibacterial ecological degradable cutlery box is prepared by the following steps:
Step S1, mixing functionalized cellulose and a coupling agent in parts by weight at a high speed for 5-10min, and keeping the rotating speed at 1000-1200rpm to obtain surface-treated cellulose;
S2, placing the modified polypropylene master batch, the plasticizer and the antioxidant in a high-speed mixer according to parts by weight, adding the surface-treated cellulose and the compatilizer prepared in the step S1, and stirring and mixing for 8-12min at the rotating speed of 1300-1500rpm to obtain a mixed material;
s3, placing the mixed material prepared in the step S2 into a double-screw extruder for melt blending, wherein the extrusion temperature of the double-screw extruder is set to 160-175 ℃, and extruding and granulating to obtain blending granules;
S4, placing the blended granules obtained in the step S3 into an injection molding machine, and performing injection molding through a cutlery box die to obtain an antibacterial ecological degradable cutlery box;
the modified polypropylene master batch is prepared by carrying out ring opening esterification reaction on itaconic anhydride and 3-dimethylamino-1-propanol to obtain a monomer A, and then carrying out melt grafting reaction on the monomer A and random copolymer polypropylene under the action of an initiator;
The functional cellulose is prepared by alkalizing microcrystalline cellulose, performing nucleophilic substitution reaction with epichlorohydrin, performing ring-opening reaction with 2-methyl alkenyl-1, 3-propanediol to obtain modified cellulose, and performing ring-opening addition reaction with a functional photodegradation agent;
The functional photodegradation agent is prepared by performing hydrothermal synthesis on titanium chloride and ferric stearate to obtain nano titanium dioxide particles with the surfaces adsorbing ferric stearate molecules, performing hydrolytic polycondensation on tetramethoxysilane and trimethoxyoctadecylsilane serving as silicon sources to obtain a modified photodegradation agent, and then performing chemical bonding on the modified photodegradation agent and KH 560.
2. An antimicrobial ecologically degradable cutlery box according to claim 1 characterized in that: the preparation method of the modified polypropylene master batch comprises the following steps:
Step A1, itaconic anhydride and 3-dimethylamino-1-propanol are dissolved in anhydrous THF, the temperature is raised to 75-85 ℃, stirring is carried out for 0.65-0.85h, then 2-chloro-4, 6-dimethoxy-1, 3, 5-triazine and N-methylmorpholine are added, stirring is carried out while the mixture is placed at 0 ℃, stirring and activating are carried out for 1-2h, filtration is carried out, triethylamine is added, stirring is continued for 10-20min, the mixture is dissolved in anhydrous THF again, and monomer A is obtained through recrystallization;
step A2, dissolving the monomer A in anhydrous DMF, adding 1-chlorohexane, heating to reflux, stirring and reacting for 12-16h, removing the solvent, and drying at 60 ℃ for 8-12h to obtain an antibacterial active component;
And A3, swelling the random copolymer polypropylene and the anhydrous acetone for 2-4 hours, adding the mixed solution a of the antibacterial active component and the anhydrous acetone and the initiator, mixing for 5-10 minutes in a high-speed mixer at 450-550rpm, and extruding by a double-screw extruder to obtain the modified polypropylene master batch.
3. An antimicrobial ecologically degradable cutlery box according to claim 1 characterized in that: the preparation method of the functionalized cellulose comprises the following steps:
Step B1, mixing microcrystalline cellulose and sodium hydroxide solution, stirring for 2 hours at room temperature, then adding epichlorohydrin, heating to 55-65 ℃, continuously stirring for 5-8 hours, filtering to remove solvent, then adding 2-methyl-1, 3-propanediol and isopropanol, heating to 75-85 ℃, continuously reacting for 3-5 hours, filtering to remove isopropanol, washing with absolute ethyl alcohol for 3-5 times, and drying at 60 ℃ for 8-12 hours after washing to obtain modified cellulose;
And B2, adding the modified cellulose into anhydrous DMF, performing ultrasonic dispersion, dropwise adding tetrabutylammonium bromide, a functional photodegradation agent and anhydrous DMF mixed solution B, heating to 110-120 ℃ after the dropwise adding is finished, stirring for 2-3h, centrifuging after the reaction is finished, washing the precipitate with 40% ethanol solution for 3-5 times by mass fraction, and drying to obtain the functional cellulose.
4. An antimicrobial ecologically degradable cutlery box according to claim 1 characterized in that: the preparation method of the functional photodegradable agent comprises the following steps:
Adding titanium chloride and deionized water into absolute ethyl alcohol, heating to 35-45 ℃, stirring at 600-800rpm, adding ferric stearate, stirring until the ferric stearate is fully dissolved, heating to 110-130 ℃, stirring and reacting for 8-12h, cooling to room temperature, washing the precipitate with deionized water and absolute ethyl alcohol for 3-5 times in sequence to obtain nano titanium dioxide particles with the surface adsorbing ferric stearate molecules, dispersing the nano titanium dioxide particles in cyclohexane, stirring at 1500-2500rpm for 15-25s, adding tetramethoxysilane and trimethoxyoctadecylsilane, heating to 45-55 ℃, and continuing stirring and reacting for 3-5h to obtain the modified photodegradation agent;
and C2, ultrasonically mixing the modified photodegradant, deionized water, absolute ethyl alcohol and KH560 for 30min, stirring at room temperature for reaction for 6-8h, centrifuging, washing the precipitate with absolute ethyl alcohol and deionized water for 3-5 times in sequence, and drying at 55 ℃ for 8-16h to obtain the functional photodegradant.
5. An antimicrobial ecologically degradable cutlery box according to claim 2 characterized in that: in the step A1, the dosage ratio of itaconic anhydride, 3-dimethylamino-1-propanol, anhydrous THF, 2-chloro-4, 6-dimethoxy-1, 3, 5-triazine, N-methylmorpholine, triethylamine and added anhydrous THF again is 3-5g:2.8-4.6g:50-60mL:5.2-7.8g:3.2-5.2mL:4-6mL:35-45mL, in step A2, the dosage ratio of monomer A, anhydrous DMF and 1-chlorohexane is 3-5g:30-50mL:4-6mL, in the step A3, the dosage ratio of the random copolymer polypropylene, the anhydrous acetone, the mixed solution a and the initiator is 12-15g:65-75mL:35mL:0.8-2g, and the dosage ratio of the antibacterial active component to the anhydrous acetone in the mixed solution a is 3-5g:35mL.
6. An antimicrobial ecologically degradable cutlery box according to claim 3 wherein: in the step B1, the dosage ratio of microcrystalline cellulose, sodium hydroxide solution, epichlorohydrin, 2-methyl alkenyl-1, 3-propanediol and isopropanol is 1-3g:30-90mL:20-60mL:0.8-2.4mL:35-55mL, and the mass fraction of the sodium hydroxide solution is 20%.
7. An antimicrobial ecologically degradable cutlery box according to claim 3 wherein: in the step B2, the dosage ratio of the modified cellulose, the anhydrous DMF and the mixed liquor B is 1-3g:35-55mL:10mL of the mixed solution b, wherein the dosage ratio of tetrabutylammonium bromide, the functional photodegradation agent and anhydrous DMF is 0.1g:0.8-1.2g:10mL.
8. The antibacterial ecologically degradable cutlery box of claim 4 wherein: in the step C1, the dosage ratio of titanium chloride, deionized water, absolute ethyl alcohol, ferric stearate, cyclohexane, tetramethoxysilane and trimethoxyoctadecylsilane is 1-3mL:15-45mL:60-70mL:0.2-0.4g:15-25mL: 5-15. Mu.L: 60-180 mu L, in the step C2, the dosage ratio of the modified photodegradant, deionized water, absolute ethyl alcohol and KH560 is 1-2g:2-6mL:25-35mL:0.1-0.2mL.
9. A method of degrading an antibacterial ecologically degradable cutlery box according to any of claims 1-8, characterized in that: the method comprises the following steps:
Making the waste meal box into powder by a high-speed universal pulverizer, dispersing in ethanol solution by ultrasonic, exposing to ultraviolet rays with the wavelength of 315-400nm and the illumination intensity of 6000 mu w/cm 2 for 7-15d, steaming to remove the solvent by rotary evaporation, placing the precipitate in a compost material, burying to the depth of 20cm, and treating at room temperature for 160-200 d.
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