文章摘要
王建清,李 飞,金政伟,刘晓辰,姚清清.PHA/PLA生物降解共混膜的制备[J].包装工程,2011,32(1):36-39.
WANG Jian-qing,LI Fei,JIN Zheng-wei,LIU Xiao-chen,YAO Qing-qing.Preparation of Biodegradable Blended PHA/PLA Film[J].Packaging Engineering,2011,32(1):36-39.
PHA/PLA生物降解共混膜的制备
Preparation of Biodegradable Blended PHA/PLA Film
投稿时间:2010-07-14  修订日期:2011-01-10
DOI:
中文关键词: 共混膜  生物降解  加工工艺
英文关键词: blending  biodegradation  processing technology
基金项目:国家“十一五”科技支撑计划项目(2006BAD30802)
作者单位
王建清 天津科技大学天津300222 
李 飞 天津科技大学天津300222 
金政伟 天津科技大学天津300222 
刘晓辰 天津科技大学天津300222 
姚清清 天津科技大学天津300222 
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中文摘要:
      采用共混改性方法,将聚乳酸添加到聚羟基脂肪酸酯中,以提高材料的力学性能和成膜性能,制备了生物降解膜。通过对原材料进行黏度测试,确定共混加工工艺的加工温度为200℃,转速为20 r/min时,共混效果较好。对共混膜进行了力学性能测试和断面结构分析,得到当PHA与PLA质量比为100:50时,膜的拉伸强度为30 MPa,断裂伸长率为100%,共混膜的整体性能较佳。土埋降解实验显示共混膜具有一定的降解性能。
英文摘要:
      Biodegradable film was prepared through adding PLA to PHA using blending method to enhance mechanical property and the film formation ability of PHA. The preferable blending processing technological parameters were determined through viscosity measurement, which were the mixture temperature of 200℃ and the rotational speed of 20 r/min. The mechanical property of blended film was determined by the mechanical testing. The results showed that the film tensile strength can achieve 30 MPa and the breaking elongation rati0 100% when proportion of PHA to PLA is 100 : 50 (W/W). The composting degradation experiment confirmed that the blending film have degradable property.
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