海藻酸钠/聚氨酯共混微球的制备及性能研究  

The preparation and performance of alginate/polyurethane complex microspheres

作　　者：魏靖明[1] 邓阳全[1] 单连海[1] 林松[1] 张志斌[1] 

机构地区：[1]西南交通大学生物工程学院,成都610031

出　　处：《西南民族大学学报（自然科学版）》2008年第4期704-707,共4页Journal of Southwest Minzu University(Natural Science Edition)

基　　金：国家自然科学基金项目(50573061);四川省应用基础研究项目(07JY029-065);西南交通大学科学研究基金资助项目(2006B52)

摘　　要：先合成了聚氨酯水溶液,然后将聚氨酯水溶液与海藻酸钠水溶液按一定比例混合,采用凝聚相分离法制备了海藻酸钠/聚氨酯共混微球.研究了共混微球的成球情况、含水率及溶胀性能.实验结果表明,PU质量百分含量为10%、30%、50%的共混溶液均可制备出形态较好的微球;随着PU在共混溶液中质量分数的增大,微球的含水量变小;共混微球在磷酸缓冲溶液(pH 6.86)中溶胀速率比SA水溶液制得的微球缓慢.We first synthesize the polyurethane solution, then mix the polyurethane solution and sodium alginate solution with certain volume ratio,prepare the sodium alginate/polyurethane blend microspheres by condensation phase separation method. We give a study on the bailing situation,swelling and water content of the blend microspheres. The results show that when the percentage mass content of PU in the blend solution is 10%,30%,50% ,we can prepare the better morphology microspheres; with the increasing of the percentage mass content of PU in the blend solution, the water content of the blend microspheres decreased; the blens microspheres swells slower than the microspheres prepared by SA solution in the phosphate burlier solution（pH6.86）.

关 键 词：聚氨酯 海藻酸钠 微球 

分 类 号：TS106.84[轻工技术与工程—纺织工程] TS202.3[轻工技术与工程—纺织科学与工程]