摘要
研究了丙烯腈/丙烯酸丁酯的浓乳液快速聚合,在绝热环境下反应30min后的单体转化率可达80%。通过研究乳液浓度、共单体的组成与引发剂的组成对反应转化率与共聚物的组成等的影响,确定出一种极性烯烃单体的节能、快速的新型聚合方法。
A copolymer of acrylonitrile and butyl acrylate was prepared via the room temperature initiated, self-heating polymerization of concentrated emulsion. A mixture of the monomers containing an oxidant was first dispersed in an aqueous solution of surfactants to generate a concentrated emulsion with a volume fraction of (0.8) of the dispersed phase. An aqueous solution of reductants was subsequently introduced into the concentrated emulsion to initiate the polymerization. Because the container was properly insulated, the system self-heated because of the energy released from polymerization, and achieved a high conversion in 30 min. The effect of the mass ratio of acrylonitrile/butyl acrylate monomer, the mole ratio of oxidant to reductants, as well as the emulsion concentration on the co-polymerization and the 30 min conversion were investigated. and the composition of the product was determined via elemental analysis.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2004年第1期62-64,共3页
Polymer Materials Science & Engineering
