摘要
以丙烯酰胺(AM)、2-丙烯酰胺基-2-甲基丙磺酸(AMPS)和一种功能性疏水长链烷基烯丙基氯化铵(RM18)为原料,采用反相乳液聚合法制备出一种疏水缔合两性聚丙烯酰胺乳液(AP-AM)。确定了最佳反应条件:乳化剂占油相体积分数12.5%,总单体质量分数25%,p H=6~7,起始反应温度30℃,反应时间6 h。在最佳反应条件下,利用红外光谱(FT-IR)、动态激光光散射粒径分析仪和动态流变仪对乳液AP-AM的结构及性能进行了表征。结果表明:AP-AM乳液平均粒径在100 nm左右,分布集中,乳液稳定,在170 s^(-1)的剪切速率下,随着时间的延长,黏度逐渐下降,最终仍能稳定在93 m Pa·s,具有良好的剪切稀释性。
Using acrylamide( AM),2-acrylamide-2-methyl propane sulfonic acid( AMPS) and a hydrophobic long chain alkyl allyl ammonium chloride( RM18) as raw material,were prepared to synthesis a hydrophobically associating amphoteric polyacrylamide emulsion( AP-AM) by inverse emulsion polymerization. The optimal reaction conditions were: emulsifier accounts for oil volume fraction 12. 5%,monomer total mass fraction 25%,pH =6 ~ 7,reaction temperature 30 ℃,reaction time 6 h. Under the optimum reaction conditions,the structure and properties of the emulsion AP-AM were characterized by FT-IR,dynamic laser light scattering particle size analyzer and dynamic rheometer. The results show AP-AM emulsion has an average particle size of about 100 nm and concentrated distribution,emulsion stability,at the shear rate of 170 s^(-1),the viscosity decreased gradually with the extension of time,and finally,it could still be stable at 93 m Pa·s,and had good shear thinning property.
出处
《科学技术与工程》
北大核心
2018年第1期18-22,共5页
Science Technology and Engineering
基金
国家自然科学基金(20876093)资助
关键词
聚丙烯酰胺
疏水缔合
反相乳液聚合
polyacrylamide
hydrophobic association
inverse emulsion polymerization
