化工进展2012，Vol.31Issue(7)：1555-1561,1574,8.
乙酸乙烯酯接枝改性海藻酸钙凝胶微球
Preparation of polyvinyl acetate-grafted-calcium alginate beads
摘要
Abstract
In order to reduce the swelling ratio of calcium alginate beads,vinyl acetate（VAc） was grafted on sodium alginate（SA） by free radical copolymerization,and vinyl acetate grafted calcium alginate（Ca-SA-PVAc） beads with low swelling ratio were prepared.FTIR indicated that new chemical bond was formed in modified alginate molecule.TGA showed that the rate of bound moisture loss of modified alginate beads was changed and its heat stability was improved.SEM showed that Ca-SA-PVAc beads had well-developed pore structure.The effects of reaction conditions,such as grafting reaction temperature,monomer and initiator concentrations,percentage of alginate and calcium chloride,grafting reaction time on swelling ratio in 0.9%NaCl solution were studied.By changing reaction conditions and consequently grafting reaction parameters,the swelling ratio of grafted beads could be controlled.关键词
海藻酸钠/乙酸乙烯酯/接枝反应/溶胀度/凝胶微球Key words
sodium alginate/vinyl acetate/grafting reaction/swelling ratio/hydrogel microsphere分类
化学化工引用本文复制引用
漆亮亮,英晓光,李晓,张卫英,徐雯..乙酸乙烯酯接枝改性海藻酸钙凝胶微球[J].化工进展,2012,31(7):1555-1561,1574,8.基金项目
福州大学科技发展基金 （）
福建省教育厅科技计划A类（JA11021）项目 （）
