期刊论文

Preparation and properties of compatibilized cellulose nanocrystal/ poly(lactic acid)composites

Luo, Weihua(lwh6803@163.com)

中文

复合材料学报

1000-3851

2016

33

12

2718-2724

10.13801/j.cnki.fhclxb.20160219.005

国家林业公益性行业科研专项（201504503） 湖南省高等学校“木竹资源高效利用2011协同创新中心”（湘教通[2015]351号） 湖南省自然科学基金（2015JJ2200）

本校为第一且通讯机构

采用接枝共聚法制备了马来酸酐和丙烯酸丁酯双单体接枝聚乳酸(PLA)共聚物(mPLA),然后以mPLA为增容剂,通过溶液浇铸法制备纳米纤维素(NCC)/PLA复合材料.采用SEM、DSC、TG、广角X射线衍射(WXRD)、力学和降解性能测试研究了mPLA对NCC/PLA复合材料的结构和性能的影响.结果表明:mPLA在PLA与NCC之间起到了良好的界面增容作用,促进了NCC在PLA基体中的分散.更精细分散的NCC促进了PLA的结晶成核,复合材料的结晶温度降低,结晶度提高;NCC/mPLA/PLA复合材料的力学性能随着mPLA含量增加呈先上升后下降的趋势,当mPLA含量为8％时,复合材料的拉伸强度和弹性模量与未添加mPLA的复合材料相比,分别提高了30.2％和41...

Poly (lactic acid) (PLA) graft copolymer (mPLA) was prepared by graft copolymerization using maleic anhydride and butyl acrylate as comonomers. Then the mPLA was used as compatibilizer to prepare cellulose nanocrystal (NCC)/PLA composites by solution casting method. Effects of mPLA on the structure and properties of NCC/PLA composites were investigated by SEM, DSC, TG, wide angle X-ray diffraction(WXRD), mechanical testing and degradation property test. Results show that the application of mPLA in NCC/PLA composites improves compatibilization b...