摘要
综述了生物塑料聚 (β 羟基丁酸酯 ) (PHB)近年来在物理改性 (共混改性 )和化学改性 (大分子反应改性和反应性共混改性 )方面工作的进展状况。在PHB共混体系中 ,可解体性共混物和全生物降解性共混物是两类不同的共混体系 ,后者从长远意义上讲是解决环境污染问题的根本途径 ,而其现实意义上的用途是在生物医学领域。文章主要对PHB共混体系的相容性、热行为、结晶行为、机械性能和降解性能等方面的规律进行了总结。并指出反应性共混是较佳改善非相容PHB共混体系相容性的方法 ,而大单体反应改性和反应性共混则是改造PHB ,提供新型功能化医用材料的有效手段。这些领域方面的研究代表了PHB改性工作新的发展方向。
The recent development of modification of bacterial poly (β hydroxybutyrate) (PHB) by chemical and physical methods is reviewed in this article.The physical modification here is referred to simple blending,while the chemical methods include Reactive Polymer Blending (RPB) and modification based on PHB macromers due to both of them involving chemical reactions.Of all simple PHB blend systems,totally degradable blends are quite different from disintegrated blends.Applications of totally degradable blends are ultimate trends to resolve the environmental problems in a long run,while at present their practical applications mainly focus on biomedical fields.The miscibility,thermal behavior,crystallinity,mechanical and degradation properties are systemically summarized in this article.Furthermore,it has been pointed out RPB is a useful method to improve miscibility of PHB blends,and the modification based on PHB macromers and the interpentrating technique are two effective ways to modify PHB and construct newly functional biomedical materials.These researches represent the new trends of PHB modification work.
出处
《高分子通报》
CAS
CSCD
2001年第2期1-12,共12页
Polymer Bulletin
基金
国家自然科学基金!资助项目 ( 594 730 0 9)
关键词
聚(β-羟基丁酸酯)
物理改性
化学改性
Poly (β-hydroxybutyrate)
Chemical modification
Physical modification
