Starch acetate-polydioxanone graft copolymer/inorganic particulate nano composite material and preparation method thereof

A technology of polydioxanone and nanocomposite materials, which is applied in the field of polymer and inorganic nanofiller composite materials and their preparation, and can solve the problems of unfavorable processing and molding, limiting the wide application of general-purpose plastics, and low melt strength. Achieve the effect of increasing the biodegradation rate, requiring low reaction conditions, and no pollution to the environment

Active Publication Date: 2010-06-02
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the melt strength of the graft copolymer is low, which is not conducive to processing and molding, which limits its wide application as a general-purpose plastic.

Method used

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  • Starch acetate-polydioxanone graft copolymer/inorganic particulate nano composite material and preparation method thereof
  • Starch acetate-polydioxanone graft copolymer/inorganic particulate nano composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Add 5 parts of starch acetate with a degree of substitution of 2.3 and a molecular weight of 30,000, 95 parts of freshly distilled p-dioxanone monomer and 5 parts of montmorillonite into the reaction bottle in sequence, and ultrasonically disperse under the protection of nitrogen atmosphere for 2 hour, make the starch acetate completely dissolve in the p-dioxanone monomer, at the same time make the montmorillonite swell, then raise the temperature to 80°C, and then add triethylaluminum with a molar ratio of 0.002 to p-dioxanone The catalyst is reacted for 6 hours to obtain the starch acetate-polydioxanone graft copolymer / inorganic particle nanocomposite material.

Embodiment 2

[0023] Add 15 parts of starch acetate with a degree of substitution of 2.3 and a molecular weight of 50,000, 85 parts of freshly distilled p-dioxanone monomer and 7 parts of montmorillonite into the reaction bottle in sequence, and ultrasonically disperse them under the protection of nitrogen atmosphere for 2 hour, make the starch acetate completely dissolve in the p-dioxanone monomer, at the same time make the montmorillonite swell, then raise the temperature to 120°C, and then add aluminum isopropoxide with a molar ratio of 0.004 to p-dioxanone The catalyst is reacted for 12 hours to obtain the starch acetate-polydioxanone graft copolymer / inorganic particle nanocomposite material.

Embodiment 3

[0025] Add 40 parts of starch acetate with a degree of substitution of 2.9 and a molecular weight of 50,000, 60 parts of freshly distilled p-dioxanone monomer and 0.5 part of montmorillonite into the reaction bottle in sequence, and ultrasonically disperse under the protection of nitrogen atmosphere for 1 hour, make the starch acetate completely dissolve in the p-dioxanone monomer, at the same time make the montmorillonite swell, then raise the temperature to 90°C, and then add triethylaluminum with a molar ratio of 0.004 to p-dioxanone The catalyst is reacted for 12 hours to obtain the starch acetate-polydioxanone graft copolymer / inorganic particle nanocomposite material.

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Abstract

The invention discloses a starch acetate-polydioxanone graft copolymer/inorganic particulate nano composite material which is prepared from a starch acetate-polydioxanone graft copolymer base material and nanometer inorganic particulates, wherein the weight ratio of starch acetate to graft copolymers is 1 to 40:100, and the weight ratio of the nanometer inorganic particulates to the starch acetate-polydioxanone graft copolymers is 0.5 to 10:100. The invention also discloses a preparation method of the starch acetate-polydioxanone graft copolymer/inorganic particulate nano composite material. Because the starch acetate and the nanometer inorganic particulates are introduced into the copolymer, the production cost is reduced, the thermal property, the mechanical property and the biodegradation rate of the polydioxanone are increased, and the preparation method has lower requirements for a monomer and a reaction condition and has simple operation, high production efficiency and no environment pollution.

Description

technical field [0001] The invention belongs to the technical field of polymer and inorganic nano filler composite material and its preparation, and in particular relates to a starch acetate-polydioxanone graft copolymer / inorganic particle nano composite material and a preparation method thereof. Background technique [0002] Most of the polymer materials currently used, such as polyethylene, polypropylene, polystyrene, polyvinyl chloride, etc., are very stable in nature and difficult to degrade. The use of these materials, especially in the agricultural and packaging industries for single-use consumption, has caused serious white pollution. In agriculture, packaging and medical industries, many plastic products do not require a long service life. Therefore, domestic and foreign scientific researchers are working on developing a new generation of plastic products that not only have the excellent performance of plastics, but also can be degraded. . [0003] Polydioxanone (P...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L3/06C08K3/34C08K3/20C08B31/04C08G63/664C08G63/78
Inventor 王玉忠路芳曾令羲陈思翀汪秀丽曾建兵杨科珂
Owner SICHUAN UNIV
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