魔芋葡甘聚糖接枝丙烯酰胺/蒙脱土复合材料的结构与性能研究  

Study on Structure and Performance of KGM Grafted AH/MMT Composites

作　　者：鲁俊[1] 杨海浪[1] 梁英[1] 

机构地区：[1]襄樊学院化学工程与食品科学学院,湖北襄樊441003

出　　处：《塑料工业》2010年第7期18-20,33,共4页China Plastics Industry

基　　金：绿色化工过程省部共建教育部重点实验室开放研究基金(GCP200810);湖北省教育厅重点科研基金资助项目(D20082505)

摘　　要：以硝酸铈铵为引发剂,N,N′-亚甲基双丙烯酰胺为交联剂,在蒙脱土(MMT)乳液中进行魔芋葡甘聚糖(KGM)接枝丙烯酰胺(AM)的聚合反应,制备出KGM-g-AM/MMT复合材料,用红外光谱和扫描电镜图对复合材料进行表征,并用热头重分析仪(TG)测试材料的热性能。结果表明,KGM分子链和MMT层面上的羟基作为接枝反应点,参加了与AM的接枝共聚反应;MMT参与了接枝共聚反应,KGM-g-AM/MMT的起始热失重温度为321℃,具有良好的热稳定性;土壤降解实验显示,KGM-g-AM/MMT复合材料具有良好的生物降解性。Using ammonium cericnitrate and N,N′-methylenebisacrylamide（MBAAm）as an initiator and a cross-linker respectively,a composite konjac glucomannan grafted acrylamide/MMT（KGM-g-AM/MMT）was prepared by polymerization of AM grafted onto KGM in the present of sodium montmorillonite（MMT）suspension.The composite was characterized by SEM and IR.The thermal property was tested by TG.The result suggested that the hydroxyl in the layer of KGM molecular chains and MMT as a graft point,participated in the grafting copolymerization reaction with AM.MMT involved in graft copolymerization,too.the initial weight loss temperature of KGM-g-AM/MMT was 321 ℃,with good thermal stability;the soil degradation experiments showed that,KGM-g-AM/MMT composite material had good biodegradability.

关 键 词：魔芋葡甘聚糖 丙烯酰胺 蒙脱土 接枝聚合 生物降解性 

分 类 号：TB332[一般工业技术—材料科学与工程]