PLA/OMMT插层复合材料的绿色合成、表征及性能研究  

Study on Green Synthesis,Characterization and Properties of PLA/OMMT Intercalation Composites

作　　者：汪凌[1] 李亚瑜[1] 甄卫军[1] 刘月娥[1] 庞桂林[1] 

机构地区：[1]新疆大学化学化工学院,乌鲁木齐830046

出　　处：《非金属矿》2011年第1期40-43,共4页Non-Metallic Mines

基　　金：2006年度自治区高校科研计划重点项目(No.XJEDU2006I14)

摘　　要：以乳酸锌为绿色催化剂,采用丙交酯开环聚合法制备了聚乳酸/有机蒙脱土(PLA/OMMT)复合材料。通过红外(FTIR)光谱、X射线衍射(XRD)、扫描电镜(SEM)和透射电镜(TEM)对PLA/OMMT插层复合材料进行了表征,结果表明PLA/OMMT为插层型复合材料。热重-微商热重(TG-DTG)分析表明PLA/OMMT热稳定性高于PLA;初步的热老化分析结果与TG-DTG分析结果吻合。降解性研究表明PLA/OMMT在0.01mol/LHCl溶液、0.01mol/LNaOH溶液、生理盐水、PBS溶液、SBF溶液和蒸馏水6种介质中的降解速率均大于PLA,说明OMMT的加入加快了PLA的降解。In this paper,PLA/OMMT intercalation composite was synthesized by ring-opening polymerization with zinc lactate as green catalyst,and characterized by FTIR spectrum,X ray diffraction（XRD）,scanning electron microscopy（SEM）and transmission electron microscopy（TEM）.The results showed that the PLA/OMMT was of intercalation composite.TG-DTG analysis showed that PLA/OMMT had higher thermal stability than PLA.The preliminary study on heating aging was in accordance with the thermal analysis result.In degradation experiments,the degradability of PLA/OMMT was faster than that of PLA in 0.01mol/L HCl solution,0.01mol/L NaOH solution,saline solution,PBS,SBF and distilled water.The above results showed that OMMT could improve the degradability of PLA.

关 键 词：聚乳酸 绿色合成 插层复合材料 表征 性能 

分 类 号：TB332[一般工业技术—材料科学与工程]