MA/AA无皂乳液聚合改性纳米SiO_2  

Nano silica was modified by soap-free emulsion polymerization using methacrylic acid (MA) and acrylic acid (AA)as monomer

作　　者：周诗彪[1] 张维庆[1] 郝爱平[1] 郑清云[1] 廖慧英[1] 陈贞干[1] 

机构地区：[1]湖南文理学院化学化工学院,湖南常德415000

出　　处：《湖南文理学院学报（自然科学版）》2008年第2期41-43,62,共4页Journal of Hunan University of Arts and Science(Science and Technology)

基　　金：湖南省科技厅资助项目(03GKY3063);常德市科技局资助项目(2006/77-11)

摘　　要：以α-甲基丙烯酸、丙烯酸为反应单体,对纳米SiO2进行无皂乳液聚合表面改性;采用正交试验法探讨了反应温度、反应时间、原材料配比反应条件对纳米SiO2粒子表面改性反应的影响,并对改性前后的纳米粒子进行了红外光谱(IR)分析和差热分析(DTA).研究结果表明,较佳的改性聚合反应条件为反应温度80℃、反应时间3h、原材料配比(单体与纳米SiO2质量比)为3:100,在此条件下进行改性反应改性效果明显.Nano silica was modified by means of soap-free emulsion polymerization with α- methacrylic acid （MA） and acrylic acid（AA）as monomer. Process conditions such as reaction temperature and time and ratio of materials used have been investigated with orthogonal experiment method, nano silica panicles before and after modification were characterized by IR and DTA, respectively. Optimums of modified reaction were summarized as follows：Reaction temperature is at 80℃, reaction time is for 3h, and the ratio of MA to nano silica by mass is 3：100. Under the optimum, nano silica can be modified efficiency.

关 键 词：纳米SIO2 无皂乳液聚合 Α-甲基丙烯酸 丙烯酸 正交试验法 

分 类 号：O631.5[理学—高分子化学]