Biodegradable Material


    Degradable materials are virtually materials modified by adoption of easily decomposed group, easily ruptured chemical bond and easily transferred atoms or groups into chemical structure through polymer synthetic technologies, or by addition of components which can be swallowed by microorganism to molecular chain, only in which condition, molecular chain is ruptured, structure is destroyed and material is quickly decomposed in nature with the action of light and microorganism, with no environmental pollution and recyclable and reusable properties.

     Biodegradable materials refer to polymer materials whose molecular weight decreases and performance changes induced by the change of chemical structure with the action of microorganism in nature, or tissue cell, enzymes and body fluid in human or animals.

     It has the following characteristics: easy to adsorb water; containing sensitive chemical group; low crystallinity; low molecular weight; high linearity of molecular; high specific surface area, etc.

     Traditional polymer materials greatly facilitate people's lives. However, it is also main white pollution source and a serious threat to environment, resulting in pollution of groundwater and soil and endangering human’s survival and health. Meanwhile, biodegradable materials develop rapidly because of its environment-friendly property.

     Bio-based materials in China is similar to main materials R&D internationally, mainly including starch-based plastic, PLA, PHA, PBS, CO2 copolymer and their polyblend.

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