降解性高分子

聚乳酸（PLA）是以乳酸为单体经化学合成的新型生物降解性高分子材料，不会造成环境污染，但是PLA韧性较差，使其很难满足更广泛的工业应用。

Polylactic acid ( PLA ), a new type of degradable polymer synthesized by the monomer of lactic acid , is the environmental-friendly material , but its brittleness makes it hard to satisfy the needs of extensive industrial application .

其中聚酸酐类可降解性高分子材料是80年代初发展起来的一类新型可生物降解材料。

Novel biodegradable polymers-poly anhydrides have been developed since1980s'by the group of langer .

完全生物降解性高分子材料&聚乳酸的合成及应用

Synthesis and Application of the Fully biodegradable Polymer Material & Polylactide

人工合成材料中可降解性高分子材料降解速度和强度易调节，容易塑型和构建高孔隙度三维支架，但该类生物材料的缺点在于降解产物会对细胞的产生不利影响。

The degradation speed and intension of degradable synthetic macromolecular material can be readily regulated . This kind of material can be easily molded and construct three-dimensional scaffold with high porosity .

综述了生物降解性高分子材料的社会需求及其应用领域，重点介绍了几种典型的生物降解性材料，如脂肪族聚酯、纤维素、淀粉系等聚合物的研究和开发现状。

This paper introduces the social demand of biodegradable polymers and their application areas , emphasizes on the research and development status of several kinds of typical biodegradable materials such as aliphatic polyester , cellulose and starch-based polymer .

以生物降解性的高分子作为负药载体，在医药卫生等领域有着很广阔的应用前景。

The drug-loaded microspheres made by biodegradable polymer possess broad prospects for application as drug-carrier in medical field .

对其结构的表征结果表明：此种两性淀粉仅使淀粉结构中的无定型区发生改变，并未改变整体结晶结构，因此，其生物降解性同天然高分子淀粉一样，可完全降解且无二次污染。

The result of characterization of amphoteric starch indicated that the change was occured in the amorphism portion of the starch configuration , whole crystal framework was not destroyed , its biological degradability was the same to nature starch and no second pollution to environment .

聚酸酐作为一类具有良好生物相容性、表面溶蚀特性及降解速度可调的生物降解性高分子材料，倍受人们关注。

In these materials , polyanhydride was a kind of biodegradable polymer , which attracted the interest of many researchers , because it was biocompatible , surface-eroding behavior and the rate of degradation was adjustable .