原位聚合法制备微胶囊过程中影响因素的研究  

Influencing Factors in the Process of Preparing Microcapsules via in Situ Polymerization of Urea-formaldehyde

作　　者：周磊[1] 曹立新[1] 柳伟[1] 苏革[1] 韩冰[1] 

机构地区：[1]中国海洋大学材料科学与工程研究院,山东青岛266100

出　　处：《科技导报》2009年第4期54-57,共4页Science & Technology Review

基　　金：国家自然科学基金项目(50672089);山东省优秀中青年科学家奖励基金项目(2006BS04034)

摘　　要：为在乳液体系中制备具有较好表面形貌、粒径分布均一的电泳显示用微胶囊,以尿素和甲醛为原料,采用原位聚合法制备出脲醛树脂微胶囊,并对乳化剂的用量、搅拌速度、酸性催化剂的种类以及滴加速度和乳液的pH值等因素对微胶囊的形成、形态和质量的影响进行了系统的研究。结果表明,分别采用0.039g(0.66×10-3mol/L)的吐温80(Tween-80)和0.1mol/L的盐酸作为乳化剂和酸性催化剂,搅拌速度在600～800r/min,乳液体系的pH值为1.5时所制备胶囊的形貌质量最好。In order to prepare electrophoretic microcapsules with excellent properties, in-situ polymerizaton using urea-formaldehyde resin was employed with the outer membrane, and influencing factors, such as emulsifier, acid catalysts, pH and stirring speed, were studied. The results show that while 0.039 g （0.66×10^-3 mol/L） Tween-80 was used as Emulsifier, 0.1M HC1 as acid catalyst, and with pH value of 1.5 and stirring speed of 600-800 r/min, the prepared electrophoretic microcapsules enjoy good qualities, such as smooth surface, transparence, good dispersibility and complete morphology.

关 键 词：脲醛树脂微胶囊 原位聚合 电泳显示 

分 类 号：TB383.4[一般工业技术—材料科学与工程]