摘要
研究了高单体质量分数(25%～40%)下丙烯酰胺的反相微乳液聚合反应,使用工业白油作为分散介质,使用复合非离子乳化剂稳定反应体系,使用焦亚硫酸钠引发聚合。研究了引发剂组成及浓度、交联剂浓度、温度及单体浓度对反应转化率和聚合物分子质量的影响。结果表明,转化率和分子质量主要受引发剂浓度及单体浓度的影响。根据筛选出来的优化条件,制备了固含量接近40%、分子质量约850万的聚丙烯酰胺微乳液。
The inverse microemulsion polymerization of acrylamide in an isoparaffin solvent at high monomer concentrations （25 -40 wt % ）, stabilized by a mixture of nonionic surfactants and initiated by sodium metabisulfite, is studied. The influence of different factors such as the initiator concentration and composition, temperature, crosslinking agent concentration and the total monomer concentration （TMC） on the final conversion and polymer molar masses are investigated. The results show that the final conversions and polymer molar masses are influenced by the initiator concentration and TMC. Under the optimital reaction conditions in this study, the high solid-content microemulsion （about 40% ） with high molar mass （about 8. 5107） is obtained.
出处
《现代化工》
CAS
CSCD
北大核心
2011年第6期58-61,共4页
Modern Chemical Industry
关键词
丙烯酰胺
反相微乳液聚合
高固含量
高分子质量
acrylamide
inverse microemulsion polymerization
high solid-content
high molar mass
