抗菌淀粉/PVA复合薄膜的合成  

Synthesis of antimicrobial starch /PVA films

作　　者：张家佳[1] 潘远凤[1] 杨贵涵 张建[1] 

机构地区：[1]广西大学化学化工学院广西石化资源加工及过程强化技术重点实验室,广西南宁530004

出　　处：《现代化工》2014年第6期55-57,59,共4页Modern Chemical Industry

基　　金：国家自然科学基金资助项目(21306027);广西自然科学基金资助项目(2013GXNSFCA019004);广西石化资源加工及过程强化技术重点实验室主任课题基金资助项目(2012Z04)

摘　　要：利用氢键结合原理将聚六亚甲基盐酸胍(PHMG)与碱性白土结合制得抗菌胍土,并将其应用于淀粉/PVA复合薄膜中。采用XRD、热重分析仪等研究了胍土的结构和性能。结果表明:PHMG裹附在碱性白土表面上并有部分插入碱性白土层间,胍土具有良好的热稳定性,可以满足淀粉/PVA薄膜加工制备条件需要。胍土对大肠杆菌的杀菌率可达99%,说明胍土具有良好的抗菌、杀菌性能。胍土作为填充材料加入到淀粉/PVA薄膜中,最佳添加量为2%,所得复合膜的抗拉强度增加60%,断裂伸长率增加29%,并具有明显的抑菌圈。Hydrogen bonding principle is used to combine polyhexamethylene guanidine hydrochloride （PHMG）with alkaline clay to prepare antimicrobial PHMG clay.The resulting PHMG clay is incorporated into the modified starch/PVA films.The structure and properties of PHMG clay are studied by XRD and thermogravimetry,respectively.The results show that PHMG adsorbs on the surface of alkaline clay and partially intercalates into the interlamination of alkaline clay as well.Furthermore,PHMG clay has good thermal stability,which meets the processing requirements.Meanwhile,the PHMG clay exhibits excellent antimicrobial property and the inhibition rate reaches 99％.When PHMG clay is added to starch/PVA films as fillers with an optimal amount （2％）,the tensile strength and elongation at break of the composite films can be improved by 60％ and 29％,respectively.Moreover,the obtained composite films show evident inhibition zone.

关 键 词：聚六亚甲基盐酸胍 淀粉 抗菌 薄膜 

分 类 号：TB33[一般工业技术—材料科学与工程] TB34