Position: Home > Articles > Effect of Surface Treatment on Mechanical Properties of Poly ( Lactic Acid)/Bamboo Particle Biocomposites
Agricultural Engineering
2014,4
(1)
37-40
表面处理对PLA/BP复合材料力学性能的影响
作 者：
钱少平;钟志坤;毛海良;盛奎川
单 位：
浙江大学生物系统工程与食品科学学院
关键词：
竹颗粒;聚乳酸;马来酸酐;碱处理;增容作用
摘 要：
为改善竹颗粒(BP)与聚乳酸(PLA)的表界面性能,分别用氢氧化钠溶液和马来酸酐(MAH)对BP表面处理后,与PLA熔融共混制得完全生物可降解复合材料。通过扫描电子显微镜和力学性能测试,研究了碱处理及不同MAH浓度对竹颗粒及其复合材料力学性能的影响。结果表明:碱处理和MAH增容后,BP与PLA的表面相容性得到改善;当MAH添加量为1.0%时,复合材料有较佳的拉伸强度(47.6 MPa)和断裂伸长率(6.22%),而当MAH添加量为0.5%时,复合材料有较好的弯曲强度(72.61 MPa)和弯曲模量(4.65 GPa)。
译 名：
Effect of Surface Treatment on Mechanical Properties of Poly ( Lactic Acid)/Bamboo Particle Biocomposites
作 者：
Qian Shaoping;Zhong Zhikun;Mao Hailiang;Sheng Kuichuan;College of Biosystems Engineering and Food Science,Zhejiang University;College of Urban Construction,Wuhan University of Science and Technology;
关键词：
Bamboo particle,PLA,Maleic anhydride(MAH),Alkali treatment,Compatibilization
摘 要：
To improve interfacial interaction between bamboo particle( BP) and poly( lactic acid)( PLA),sodium hydroxide solution was employed to pretreat BP and maleic anhydride( MAH) was used to compatibilize PLABP biocomposites. The biocomposite was prepared by melt blending and hot-pressing. Effects of alkali and MAH treatment on the properties of BP and its biocomposites were investigated using scanning electron microscope and mechanical measurements. Results showed that interfacial interaction between PLA and BP in the biocomposites was improved with MAH compatibilizer. Tensile strength and elongation at break of PLABP biocomposites reached maximal values of 47. 6 MPa and 6. 22%,respectively,when treated with 1. 0% MAH. Maximal flexural strength and flexural modulus of 72. 61MPa and 4. 65 GPa were obtained with 0. 5% MAH treatment.
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