中国塑料 ›› 2008, Vol. 22 ›› Issue (03): 36-41 .DOI: 10.19491/j.issn.1001-9278.2008.03.008

• 材料与性能 • 上一篇    下一篇

聚(3-羟基丁酸和4-羟基丁酸酯)共聚物与聚乳酸共混体系性能研究

李梅,高珊   

  1. 1中国民航大学理学院,天津300300; 2北京航空航天大学材料科学与工程学院,北京100083
  • 收稿日期:2007-08-12 修回日期:1900-01-01 出版日期:2008-03-26 发布日期:2008-03-26

Properties of Poly ( 3-hydroxybutyrate-co-4-hydroxybutyrate)/Polylactic acid Blend

LI Mei,GAo Shan   

  1. 1. College of Science, Civil Aviation University of China, Tianjin 300300,China; 2.School of Material Science and Engineering, Beihang University, Beijing 100083, China
  • Received:2007-08-12 Revised:1900-01-01 Online:2008-03-26 Published:2008-03-26
  • Contact: LI Mei

摘要: 研究了可完全生物降解的聚(3-羟基丁酸-co-4-羟基丁酸醋)与聚乳酸(PLA)共混体系,利用偏光显微镜、动态和静态剪切流变、X射线衍射和差示扫描量热仪,分析共混体系的结晶性能、流变性能和热稳定性。结果表明:随着PLA添加量增加,熔融温度由156.05℃降低到130. 32 C,结晶温度由102. 09℃降低62. 33 C,结晶度下降。而玻璃化转变温度由一5 . 69℃上升3. 42 C,体系的热稳定性和豁弹性提高。

关键词: 聚(3-羟基丁酸和4-羟基丁酸醋)共聚物, 聚乳酸, 生物降解

Abstract: Blends of poly ( 3-hydroxybutyrate-co-4-hydroxybutyrate)polylactic acid (PHB/PLA) were prepared via melt mixing, whose properites were investigated with the XDR, differential scanning oalorimetry (DSC),Rheometer,and polarizing mioroscope(PLM).With increasing amount of PLA,the crystallization temperature decreased from 102. 09 C to 62. 33 C,melting point decreased from 156 .OS C to 130 .32 C,the glass temperature increased from一8.69℃to 3.42 C.

Key words: poly(3-hydroxybutyrate-co-4-hydroxybutyrate), polylactic acid, biodegradability