Composite material of complete degradable polymer and preparation method thereof

A composite material and polymer technology, applied in the field of polymethylethylene carbonate/polyvinyl alcohol composite material and its preparation, can solve the problems of limited application range, poor mechanical properties, low glass transition temperature, etc.

Inactive Publication Date: 2005-10-26
SUN YAT SEN UNIV
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Problems solved by technology

However, the glass transition temperature of polymethylethylene carbonate is l

Method used

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  • Composite material of complete degradable polymer and preparation method thereof

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Embodiment 1-5

[0016] The composition and properties of the composite materials are shown in Table 1. Polymethylethylene carbonate and 1588 polyvinyl alcohol were dissolved in dimethyl sulfoxide at 60° C., with a total concentration of 5-10% (w / v). Stir mechanically for 12-16 hours, pour the solution on a glass plate covered with PET film, and dry the solvent in a 60°C ordinary oven and a 120°C vacuum oven. The obtained composite film was cut into vertical strips of 75×5 mm for mechanical and thermal performance tests.

[0017] Example

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Abstract

The present invention relates to a polymethyl ethylene carbonic ester/polyvinyl alcohol composite material which can be completely degraded and its preparation method. Said composite material adopts degradable plastics polymethyl ethylene carbonic ester as base body, and uses polyvinyl alcohol with various polymerization degrees and alcoholysis degrees as filling material, and adopts solution blending process to prepare the invented composite material, in which the polyvinyl alcohol content can be 10-40%.

Description

technical field [0001] The invention relates to a fully degradable polymethylethylene carbonate / polyvinyl alcohol composite material and a preparation method thereof. Background technique [0002] Carbon dioxide is recognized globally as the main gas that causes the greenhouse effect, so how to use carbon dioxide has attracted the attention of scientists from all over the world. At present, the relatively successful technology of using carbon dioxide is to use special technology to polymerize carbon dioxide and certain organic compounds into degradable polymer plastics, so as to solve the greenhouse effect and the "white pollution" problem that is a headache for scientists from all over the world. Polymer blending is a simple and effective method to improve the physical or chemical properties of polymers. Through the interaction between polymers, composite materials can meet certain requirements that single polymers cannot meet. At the same time, mixing cheap polymers can a...

Claims

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Application Information

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IPC IPC(8): C08L69/00
Inventor 孟跃中曹永鑫肖敏诸泉王勋林
Owner SUN YAT SEN UNIV
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