化工进展 ›› 2012, Vol. 31 ›› Issue (03): 586-592.

• 材料科学与技术 • 上一篇    下一篇

PHB/PLLA聚酯材料与PHB/PLLA/PEO聚酯材料的体外降解性

杜江华,杨青芳,范晓东   

  1. (西北工业大学理学院应用化学系,陕西 西安 710072
  • 出版日期:2012-03-05 发布日期:2012-03-05

In vitro degradation behavior of PHB/PLLA blends and PHB/PLLA/PEO blends

DU JianghuaYANG QingfangFAN Xiaodong   

  1. (Applied Chemical Department,School of Science,Northwestern Polytechnical University,
    Xi’an 710072,Shaanxi,China)
  • Online:2012-03-05 Published:2012-03-05

摘要: 对聚β-羟基丁酸酯/聚乳酸(PHB/PLLA)及聚β-羟基丁酸酯/聚乳酸/聚氧乙烯(PHB/PLLA/PEO)膜状样品在37 ℃磷酸缓冲溶液(PBS)/溶菌酶中的降解行为进行了研究,通过定期观察质量损失、降解过程中的热力学性质及样品表面形态变化,发现PHB/PLLA共混未能提高PHB的降解速度,而PEO加入到PHB/PLLA体系中显著提高了PHB、PLLA的降解速度,进而提高了PHB/PLLA共混体系的降解速度。

关键词: &beta, -羟基丁酸酯, 聚乳酸, 聚氧乙烯, 降解

Abstract: In this paper,the in virto degradation behavior of PHB/PLLA[poly (?-hydroxybutyrate)/ poly (L-lactide)] blends and PHB/PLLA/PEO [poly (?-hydroxybutyrate)/poly (L-lactide)/poly (ethylene oxide)] blends was studied by changing weight retention,thermal properties,the morphology of PHB/PLLA and PHB/PLLA/PEO patch in phosphate buffered saline (PBS)/ lysozme at 37 ℃. It was founded that the degradation rates of PHB was not affected by PLLA,whereas PEO adding to PHB/PLLA blends led to the acceleration of PHB and PLLA degradability,so the degradation rate of PHB/PLLA was accelerated.

Key words: poly(b-hydroxybutyrate), poly (L-lactide), poly (ethylene oxide), degradation

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