碳纳米管/聚乳酸复合材料非等温结晶动力学  

Non-isothermal Crystallization Kinetics of Carbon Nanotubes/PLA Composite

作　　者：王劭妤[1] 杨华[1] 贾晓川[2,3] 石坚[1] 

机构地区：[1]天津科技大学材料科学与化学工程学院,天津300457 [2]天津出入境检验检疫局工业产品安全技术中心,天津300201 [3]天津市检验检疫科学技术研究院,天津300457

出　　处：《塑料工业》2013年第5期83-87,共5页China Plastics Industry

基　　金：天津科技大学实验室开放基金项目(1103A208);天津市科技计划项目(12ZCZDSF01000);天津市应用基础及前沿技术研究计划(11JCYBJC03400);国家质检总局科技计划(2012IK123)

摘　　要：研究了聚乳酸(PLA)与多壁碳纳米管(MWNTs)/PLA复合材料的非等温结晶动力学。利用硅烷偶联剂KH-550改性碳纳米管,并用溶液共混法制备MWNTs/PLA复合材料。利用DSC研究了材料的结晶过程,所得的降温曲线表明基体中的碳纳米管可以提高材料的结晶温度范围和结晶放热焓。采用Jeziorny法和Mo法研究了PLA与MWNTs/PLA复合材料的非等温结晶动力学,结果表明,适量的碳纳米管有效地起到了成核剂的作用,提高了材料的结晶速率。This paper investigated the non-isothermal crystallization kinetics of PLA and multi-walled carbon nanotubes （MWNTs）/PLA composites. The MWNTs were modified by coupling agent KH-550, and the MWNTs/PLA composites were prepared by solution blending. The process of crystallization was tested by DSC, of which the cooling curves indicated the range of crystallization temperature and exothermic enthalpy during crystallization were increased due to the MWNTs in matrix. And the non-isothermal kinetics of PLA and MWNTs/PLA composites were investigated appropriate ratio of MWNTs could effectively act as by Jeziorny theory and Mo analysis, suggesting that a nucleating agent and increased the rate of crystallization.

关 键 词：聚乳酸 碳纳米管 非等温结晶动力学 

分 类 号：TB332[一般工业技术—材料科学与工程]