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OALib Journal期刊
ISSN: 2333-9721
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单一阳离子乳化剂对D4细乳液制备及聚合的影响
DOI: 10.11777/j.issn1000-3304.2015.14398, PP. 679-684
Keywords: 十八烷基双聚氧乙烯基苄基氯化铵,D4,细乳液,细乳液聚合
Abstract:
无助稳定剂十六醇(HD)时,以十八烷基双聚氧乙烯基苄基氯化铵(OEBA)为单一阳离子乳化剂,制备粒径为200nm左右的D4细乳液.选OEBA浓度相同、有无HD添加的两对照D4细乳液,经KOH引发进行开环聚合,动态光散射法(DLS)追踪聚合中粒径变化过程.同时借助紫外可见分光光度计,考察合成的聚二甲基硅氧烷(PDMS)细乳液对强酸HCl、强碱KOH和电解质NaCl的相对稳定性.结果显示,单一乳化剂OEBA时,不但制备的D4细乳液稳定性良好,而且合成的PDMS细乳液具优良的耐强酸、强碱和电解质能力;单一乳化剂时不仅聚合中粒径变化与添加HD相一致,而且反应速率随转化率和时间的变化规律也相似.
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