Production process of biodegradable membrane

Abstract

The invention discloses a production process of a biodegradable membrane. The production process comprises the following steps: (1) preparing konjak leach liquor, and sealing and preserving at a coldplace for later use; (2) mixing the konjak leach liquor with microcrystalline cellulose so as to obtain a konjak cellulose emulsion; (3) dissolving polybutylene succinate powder into chloroform to prepare a polybutylene succinate solution; (4) mixing N-ethyl imidazole and sodium alginate into the polybutylene succinate solution and the konjak cellulose emulsion; (5) performing coating and calendaring filming on the commixed emulsion, thereby obtaining the biodegradable membrane. The polybutylene succinate and the konjak are adopted as basic materials, the polybutylene succinate can be easily decomposed and metabolized by multiple microorganisms in the nature or enzymes in animals and plants, the konjak is rich in cellulose, the cellulose has the advantages of reproducibility, biodegradability, hydrophilia, chemical stability, biocompatibility and the like, and thus the prepared membrane is excellent in decomposability.

Description

technical field

[0001] The invention belongs to the technical field of polymers, and relates to a film, in particular to a production process of a biodegradable film. Background technique

[0002] The use of plastic packaging provides convenience to people's lives, but it has a serious impact on the environment after being discarded. Plastic packaging is difficult to degrade and rot in the soil, and it is difficult to sort and recycle. Incineration will produce harmful substances, which will pollute groundwater and soil after burial, thereby hindering the growth of animals and plants, and directly or indirectly endangering human survival and health. Therefore, in order to respond to the requirements of national ecological civilization construction and sustainable development, finding and preparing biodegradable and environmentally friendly green plastic packaging materials is the main way to solve this problem. Cellulose is the most abundant natural organic polymer material...

Examples

Embodiment 1

[0023] A production process of a biodegradable film, comprising the following steps:

[0024] (1) Dry 1 part of konjac tubers by vacuum freezing, then pulverize them into powder (60 mesh) and mix with 11 parts of deionized water, and stir at a speed of 180r / min in a constant temperature water bath at 70°C After 6h, filter the mixture with gauze to obtain the konjac extract, which is sealed and stored in a cool place for subsequent use;

[0025] (2) Mix 1 part of konjac extract and 0.8 part of microcrystalline cellulose, and stir evenly at 25° C. to obtain konjac cellulose emulsion;

[0026] (3) polybutylene succinate powder is dissolved in chloroform and is configured into polybutylene succinate solution;

[0027] (4) Add 7 parts of N-ethylimidazole and 6 parts of sodium alginate to 100 parts of polybutylene succinate solution, stir and dissolve completely, then add 16 parts of konjac cellulose emulsion to it, at 760r / min Stir at a speed of 1h to obtain a blended emulsion; ...

Embodiment 2

[0031] A production process of a biodegradable film, comprising the following steps:

[0032] (1) Dry 1 part of konjac tubers by vacuum freezing, then pulverize into powder (65 mesh) with a pulverizer, mix with 12 parts of deionized water, and stir at a speed of 190r / min in a constant temperature water bath at 72°C After 6.5h, filter the mixture with gauze to obtain the konjac extract, which is placed in a cool place and sealed for future use;

[0033] (2) Mix 1 part of konjac extract and 0.9 part of microcrystalline cellulose, and stir evenly at 27 ° C to obtain konjac cellulose emulsion;

[0034] (3) polybutylene succinate powder is dissolved in chloroform and is configured into polybutylene succinate solution;

[0035] (4) Add 8 parts of N-ethylimidazole and 7 parts of sodium alginate to 100 parts of polybutylene succinate solution, stir and dissolve completely, then add 17 parts of konjac cellulose emulsion to it, at 785r / min Stir at a speed of 1.3h to obtain a blended e...

Embodiment 3

[0039] A production process of a biodegradable film, comprising the following steps:

[0040] (1) Dry 1 part of konjac tubers by vacuum freezing, then pulverize them into powder (80 mesh) and mix them with 12.5 parts of deionized water, and stir at a speed of 200 r / min in a constant temperature water bath at 73 °C After 7h, filter the mixture with gauze to obtain the konjac extract, which is placed in a cool place and sealed for future use;

[0041] (2) Mix 1 part of konjac extract and 1.1 parts of microcrystalline cellulose, and stir evenly at 28 ° C to obtain konjac cellulose emulsion;

[0042] (3) polybutylene succinate powder is dissolved in chloroform and is configured into polybutylene succinate solution;

[0043] (4) Add 8 parts of N-ethylimidazole and 7 parts of sodium alginate to 100 parts of polybutylene succinate solution, stir and dissolve completely, then add 19 parts of konjac cellulose emulsion to it, at 800r / min Stir at a speed of 1.5h to obtain a blended emu...

technical field

[0001] The invention belongs to the technical field of polymers, and relates to a film, in particular to a production process of a biodegradable film. Background technique

[0002] The use of plastic packaging provides convenience to people's lives, but it has a serious impact on the environment after being discarded. Plastic packaging is difficult to degrade and rot in the soil, and it is difficult to sort and recycle. Incineration will produce harmful substances, which will pollute groundwater and soil after burial, thereby hindering the growth of animals and plants, and directly or indirectly endangering human survival and health. Therefore, in order to respond to the requirements of national ecological civilization construction and sustainable development, finding and preparing biodegradable and environmentally friendly green plastic packaging materials is the main way to solve this problem. Cellulose is the most abundant natural organic polymer material...

Examples

Embodiment 1

[0023] A production process of a biodegradable film, comprising the following steps:

[0024] (1) Dry 1 part of konjac tubers by vacuum freezing, then pulverize them into powder (60 mesh) and mix with 11 parts of deionized water, and stir at a speed of 180r / min in a constant temperature water bath at 70°C After 6h, filter the mixture with gauze to obtain the konjac extract, which is sealed and stored in a cool place for subsequent use;

[0025] (2) Mix 1 part of konjac extract and 0.8 part of microcrystalline cellulose, and stir evenly at 25° C. to obtain konjac cellulose emulsion;

[0026] (3) polybutylene succinate powder is dissolved in chloroform and is configured into polybutylene succinate solution;

[0027] (4) Add 7 parts of N-ethylimidazole and 6 parts of sodium alginate to 100 parts of polybutylene succinate solution, stir and dissolve completely, then add 16 parts of konjac cellulose emulsion to it, at 760r / min Stir at a speed of 1h to obtain a blended emulsion; ...

Embodiment 2

[0031] A production process of a biodegradable film, comprising the following steps:

[0032] (1) Dry 1 part of konjac tubers by vacuum freezing, then pulverize into powder (65 mesh) with a pulverizer, mix with 12 parts of deionized water, and stir at a speed of 190r / min in a constant temperature water bath at 72°C After 6.5h, filter the mixture with gauze to obtain the konjac extract, which is placed in a cool place and sealed for future use;

[0033] (2) Mix 1 part of konjac extract and 0.9 part of microcrystalline cellulose, and stir evenly at 27 ° C to obtain konjac cellulose emulsion;

[0034] (3) polybutylene succinate powder is dissolved in chloroform and is configured into polybutylene succinate solution;

[0035] (4) Add 8 parts of N-ethylimidazole and 7 parts of sodium alginate to 100 parts of polybutylene succinate solution, stir and dissolve completely, then add 17 parts of konjac cellulose emulsion to it, at 785r / min Stir at a speed of 1.3h to obtain a blended e...

Embodiment 3

[0039] A production process of a biodegradable film, comprising the following steps:

[0040] (1) Dry 1 part of konjac tubers by vacuum freezing, then pulverize them into powder (80 mesh) and mix them with 12.5 parts of deionized water, and stir at a speed of 200 r / min in a constant temperature water bath at 73 °C After 7h, filter the mixture with gauze to obtain the konjac extract, which is placed in a cool place and sealed for future use;

[0041] (2) Mix 1 part of konjac extract and 1.1 parts of microcrystalline cellulose, and stir evenly at 28 ° C to obtain konjac cellulose emulsion;

[0042] (3) polybutylene succinate powder is dissolved in chloroform and is configured into polybutylene succinate solution;

[0043] (4) Add 8 parts of N-ethylimidazole and 7 parts of sodium alginate to 100 parts of polybutylene succinate solution, stir and dissolve completely, then add 19 parts of konjac cellulose emulsion to it, at 800r / min Stir at a speed of 1.5h to obtain a blended emu...