摘要
以凤眼蓝秸秆为填充物,通过熔融共混技术制备了生物基全降解型聚乳酸（PLA）复合材料（PLA/凤眼蓝秸秆）。利用差示扫描量热仪（DSC）、热失重分析仪（TGA）、力学性能测试仪以及扫描电镜（SEM）分别表征了PLA/凤眼蓝秸秆复合材料的玻璃化转变温度（Tg）、热稳定性、力学性能以及凤眼蓝秸秆粒子的分散情况。结果表明：凤眼蓝秸秆粒子的加入对PLA的Tg影响不大,由于PLA熔体对凤眼蓝秸秆粒子进行包裹,致使其在树脂基体中分散性良好,另外,废弃后的PLA/凤眼蓝秸秆复合材料制品可用于农业堆肥,不会造成白色污染。
Bio-based poly（lactic acid）（PLA） composites（PLA/Eichhornia crassipes stalks） were prepared by using Eichhornia crassipes stalks as a packing medium by melt compounding method. The effect of Eichhornia crassipes stalks content on glass transition temperature（Tg）, thermal stability, mechanical properties, fracture toughness, and morphology of composites were investigated by differential scanning calorimentry（DSC）, thermogravimetric analysis（TGA）, mechanical performance testing, and scanning electron microscope（SEM）. As a result, the fracture toughness of PLA was changed a little by addition of Eichhornia crassipes stalks. The effect of Eichhornia crassipes stalks on the glass transition temperature of composites were not distinct. The Eichhornia crassipes stalks were well dispersed in the PLA matrix, which avoid the agglomeration, and Eichhornia crassipes stalks has good interface compatibility with PLA matrix. In addition, the PLA/Eichhornia crassipes stalks composite waste products can be used for agricultural fertilizers, will not cause white pollution.
作者
屈朝辉
庞广元
谢正鹏
王小进
鲁帅
Qu Chaohui;Pang Guangyuan;Xie Zhengpeng;Wang Xiaojin;Lu Shuai(Zhongke Zhongchuang（Chongqing）Straw Industry Research Institute,Chongqing 400000,China)
出处
《塑料科技》
CAS
北大核心
2018年第9期94-98,共5页
Plastics Science and Technology
关键词
聚乳酸
凤眼蓝
降解
复合材料
表征
PLA
Eichhornia crassipes
Degradation
Composites
Characterization
