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Preparation method of environment-friendly composite polymer film material

A composite polymer and environment-friendly technology, which is applied in the field of preparation of environment-friendly composite polymer membrane materials, can solve the problems affecting the degradability and biocompatibility of biomass polyester, and achieve the effect of wide application range

Active Publication Date: 2013-06-05
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the physical modification method has the advantages of easy operation and low cost. In the way of physical blending modification of biomass polyester, the most obvious effect is bisphenol A modifier, but the addition of such modifier , affecting the biodegradability and biocompatibility of biomass polyester

Method used

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  • Preparation method of environment-friendly composite polymer film material
  • Preparation method of environment-friendly composite polymer film material
  • Preparation method of environment-friendly composite polymer film material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In the composite solvent prepared by mixing 41ml dioxane and 41ml chloroform, add 6.4g PHBV and 1.6g tea polyphenols respectively, and mechanically stir for 3 hours under a water bath environment of 55°C. The homogeneous polymer mother liquor is prepared into films of different sizes by the spin coating method, and the solvent is volatilized at room temperature, which is the polymer film prepared by the invention.

[0026] figure 1 The stress-strain curve of the biomass PHBV film modified by plant polyphenols is shown. It can be seen from the curve that the toughness of the modified PHBV film is nearly 2500% higher than that of the pure PHBV film. The reason why plant polyphenols can significantly improve the toughness of biomass polyesters is that the phenolic hydroxyl groups in plant polyphenols form hydrogen bonds with the carbonyl groups of biomass polyesters, which affects the structural arrangement of pure biomass polyesters. Its crystal structure (such as fig...

Embodiment 2

[0028] In 152ml of dioxane solvent, add 7.92g PHB, 0.08g grape polyphenols respectively, under the water bath environment of 25 ℃, mechanically stir for 4 hours. The homogeneous polymer mother liquor is prepared into films of different sizes by the spin coating method, and the solvent is volatilized at room temperature, which is the polymer film prepared by the invention.

Embodiment 3

[0030] In 45.33ml dioxane solvent, add 4.0g P(3HB-co-4HB), 4.0g apple polyphenol respectively, under the water bath environment of 60 ℃, mechanically stir for 2 hours. The homogeneous polymer mother liquor is prepared into films of different sizes by the spin coating method, and the solvent is volatilized at room temperature, which is the polymer film prepared by the invention.

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Abstract

The invention relates to a preparation method of an environment-friendly composite polymer film material, which comprises the following steps: adding biomass polyester and modifier into solvent, and stirring to dissolve at 25-60 DEG C for 2-4 hours, thus obtaining a polymer mother solution; and then, preparing the polymer mother solution into a film through a film coating method, and volatilizing the solvent at room temperature to obtain the composite polymer film material. The biomass polyester and the modifier thereof used in the invention have the characteristics of favorable biodegradability and biocompatibility; and the composite polymer film prepared by the invention has the characteristics of environment friendliness and wide application range, and is hopefully popularized and used in the fields of biomedical materials and ecological environment protection.

Description

technical field [0001] The invention belongs to the field of preparation of polymer membrane materials, and in particular relates to a preparation method of an environment-friendly composite polymer membrane material. Background technique [0002] In recent years, facing the depletion of the earth's petroleum resources and the deterioration of the ecological environment, the research on renewable and biodegradable materials has attracted extensive attention from researchers from all over the world. Polyhydroxyalkanoate (PHA) is a non-petroleum-based polyester material produced by microbial fermentation of polysaccharide-containing plants. As a very important class of degradable polyester materials, due to its high molecular chain stereoregularity, it has a large crystallization tendency. The glass transition temperature Tg is lower than room temperature, and factors such as secondary crystallization will occur during storage near 0°C, resulting in poor material toughness, wh...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L67/04C08K5/13C08K5/1545
Inventor 朱美芳相恒学王世超王仁林周哲孙宾陈文萍闻晓霜
Owner DONGHUA UNIV
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