接枝改性淀粉/丁苯橡胶复合材料的制备与性能研究  

Preparation and properties of graft modified starch/styrene butadiene rubber composites

作　　者：谢东[1,2] 古菊[1] 贾德民[1] 

机构地区：[1]华南理工大学材料科学与工程学院,广东广州510640 [2]广州甘蔗糖业研究所广东省甘蔗改良与生物炼制重点实验室,广东广州510316

出　　处：《弹性体》2010年第5期1-5,共5页China Elastomerics

基　　金：国家自然科学基金项目(50573021);广东省自然科学基金团队项目(39172)

摘　　要：采用固相法制备了玉米淀粉接枝马来酸酐(MAH)、甲基丙烯酸甲酯(MMA)和丙烯酸丁酯(BA)的共聚物Starch-g-MAH/MMA/BA(SMMB)。采用机械共混法制备了接枝改性淀粉/丁苯橡胶(SMMB/SBR)复合材料,研究了复合材料的力学性能、动态力学性能以及微观形态。结果表明,SMMB/SBR复合材料的力学性能优于未改性淀粉/SBR复合材料和纯SBR。与纯SBR硫化胶相比,SMMB/SBR复合材料的玻璃化转变温度(Tg)升高。微观形态分析显示,淀粉经改性后粒子尺寸减小,在SBR中的分散性得到了改善,与SBR基体的相容性得到了提高。Starch-g-MAH/MMA/BA（SMMB）,which was prepared by solid state reaction method,is the graft copolymer of corn starch,maleic anhydride（MAH）,methyl methacrylate（MMA） and butylacrylate（BA）.SMMB/styrene-butadiene rubber（SBR） composite was prepared by mechanical blending.The mechanical properties,dynamic mechanical properties and micro morphology were investigated.The results showed that the mechanical properties of SBR/SMMB composite are superior to Starch/SBR composite and vulcanized SBR.The glass transition temperature（Tg） of SMS/SBR composite is higher than that of vulcanized SBR.The micro morphology analysis showed that the size of starch particle is decreased,the dispersibility of starch is increased and the compatibility between starch and SBR is improved after modification.

关 键 词：淀粉 接枝改性 固相法 丁苯橡胶 

分 类 号：TQ333.1[化学工程—橡胶工业]