ATRP法在纳米SiO_2表面接枝PBA及其对PVC的改性研究  

Studies on grafting PBA onto surface of nano-silicon dioxide via ATRP reaction and modification of PVC

作　　者：严满清[1] 唐龙祥[2] 刘榛[2] 刘春华[2] 王平华[2] 

机构地区：[1]安徽大学化学化丁学院,安徽省绿色高分子材料重点实验室,安徽合肥230039 [2]合肥工业大学化学工程学院,安徽合肥230009

出　　处：《安徽大学学报（自然科学版）》2009年第6期60-63,共4页Journal of Anhui University(Natural Science Edition)

基　　金：安徽省教育厅高校青年教师基金资助项目(2007JQ1020)

摘　　要：采用原子转移自由基聚合法(ATRP)在纳米S iO2表面接枝PBA,并采用TEM及力学性能测试等手段研究了纳米S iO2及S iO2-g-PBA复合粒子的添加对聚氯乙烯(PVC)力学性能的影响.结果表明:用ATRP聚合方法有少量的PBA接枝于纳米S iO2表面;所制备的纳米复合粒子在PVC中较纳米S iO2粒子分散均匀,使纳米PVC/S iO2-g-PBA纳米复合材料的拉伸强度、断裂伸长率及断裂能均明显高于PVC及PVC/S iO2复合材料.In the paper, poly （ butyl acrylate） （PBA） was grafted onto the suface of nano-silicon dioxide （ SiO2 ） particles through atom transfer radical polymerization （ATRP） of butyl acrylate. Moreover, the effects of nano-SiO2 particles and nano SiO2-g-PBA composited particles on the mechanical properties of Poly （ vinyl Chloride） （PVC） were studied by means of transmission electron microscope （TEM） and mechanical properties testing. The results showed that PBA was grafted on to the surface of nano-SiO2 through ATRP reaction. Moreover, in comparison with nano-SiO2 particles, the dispersibility of nano SiO2-g-PBA composited particles in the PVC was greatly improved, and accordingly the PVC/SiO2-g-PBA composites possessed higher tensile strength, elongation at break and breaking energy than PVC and PVC/SiO2 composites.

关 键 词：原子转移自由基聚合法 聚氯乙烯 纳米SiO2粒子 纳米SiO2-g-PBA复合粒子 力学性能 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]