蓝色电泳微胶囊的制备条件对其形态的影响  

Effects of synthesis conditions for electrophoretic microcapsules on its morphology

作　　者：丁明惠 盖登宇[1] 王永贵[2] 王高升[3] 

机构地区：[1]哈尔滨工程大学材料科学与化学工程学院,黑龙江哈尔滨150001 [2]中国船舶重工集公司第七O三研究所,黑龙江哈尔滨150036 [3]哈药集团制药总厂,黑龙江哈尔滨150086

出　　处：《化学工程师》2007年第3期19-21,共3页Chemical Engineer

摘　　要：以尿素和甲醛为壁材,油性蓝和TiO2纳米粒子分散在四氯乙烯中作为囊芯,通过原位聚合法制备了蓝色电泳显示微胶囊。研究了电泳微胶囊制备时的预聚和缩聚条件对微胶囊形成和产品形态的影响,并通过设计正交实验得到了最优化的预聚条件,优化条件:脲∶甲醛(摩尔比)为1∶1.75;反应温度75℃;pH值8.5;反应时间1 h,以最优化的预聚条件制备出的预聚体作为反应物进行缩聚反应制备出的蓝色电泳微胶囊内外表面光滑,囊壁透明,分散性好且形态完整。Electrophoretic microcapsules were prepared via in - situ interfaeial polymerization using ureaformaldehyde（UF） resin as the outer membrane and oil blue and TiO2 nanoparlicles dispersed in tetrachloethylene as core materials. The effects of synthesis conditions for electrophoretic microcapsules on the morphology of microcapsules were investigated and the optimal reaction conditions for the synthesis of UF prepolymer were obtained by the orthogonal tests. The results showed that the optimum reaction conditions were molar ratio of urea to formaldehyde 1：1.75 ,reaction temperature 75℃, pH 8.5 and reaction time 1 h. The electrophoretic microcapsules prepared with such conditions had many merits, such as smooth inner and outer surface, transparence, good dispersity and complete morphology, etc.

关 键 词：电泳微胶囊 电子纸 原位聚合 脲醛树脂 

分 类 号：O631[理学—高分子化学]