摘要
以亚硫酸氢钠-过硫酸铵为引发体系通过自由基聚合合成了丙烯酸(AA)/丙烯酰胺(AM)/(1-二甲氨基烯丙基)-膦酸(DMAAPA)/二乙基二烯丙基溴化铵(DDAB)四元共聚物。最佳反应条件为:m(AA)∶m(AM)∶m(DMAAPA)∶m(DDAB)=4.0∶6.0∶0.015∶0.020,w(引发剂)=0.3%,pH=7,反应温度为40℃,单体总质量分数为20%。对AA/AM/DMAAPA/DDAB的分子结构进行了IR、1 H NMR表征。研究表明:该共聚物具有良好的耐温、耐盐、抗剪切性能;当该共聚物质量分数为1.0%时,对蒙脱土的防膨率达到84.05%,与质量分数1.0%的KCl复配后测得的防膨率达到95.04%。
A quaternary ammonium salt copolymer was synthesized by acrylamide（AM）,acrylic acid （AA）,（1-dimethylamino）-allyl phosphoric acid（DMAAPA） and diallyl-diethyl-ammonium bromide （DDAB） using NaHSO3-（NH4）2 S2 O8 by radical copolymeriaztion.The optimum condition was determined as follows：m（AA） ∶ m（AM） ∶ m（DMAAPA） ∶ m（DDAB）=4.0 ∶ 6.0 ∶ 0.015 ∶ 0.020,the appropriate pH was 7,initiator was 0.3％,temperature was 40 ℃ and concentration of monomers was 20％.The structure of the copolymer molecular was confirmed by FT-IR,1H NMR.The copolymer showed good temperature-tolerance,salt-resistant and share-resistant.The anti-swelling rate was 84.05％ when the concentration of the copolymer solution was 1.0％,which could be up to 95.04％ after mixing with 1.0％ KCl.
出处
《精细石油化工》
CAS
CSCD
北大核心
2014年第2期44-49,共6页
Speciality Petrochemicals
基金
四川省科技支撑计划项目(2012FZ0130)
国家自然科学基金项目资助(51274172)
关键词
二乙基二烯丙基溴化铵
(1-二甲氨基烯丙基)-膦酸
耐温
耐盐
防膨率
diallyl-diethyl-ammonium bromide
（1-dimethylaminoallyl）-phosphoric acid
temperature-tolerance
salt resistance
anti-swelling rate
