摘要
以丙烯酰胺(AM)、丙烯酸(AA)、含双键谷氨酸螯合剂(CH-3)为原料,通过反相乳液聚合法制备了一种聚丙烯酰胺类聚合物p(AM/AA/CH-3)。采用FTIR、^(1)HNMR、SEM及激光粒度分布仪对其结构进行了表征,并评价了其流变性能。结果表明,聚合物已成功合成,其粒径分布集中且均匀,可与盐离子形成更加致密规则的结构。聚合物在盐水中存在应力环;质量分数为0.8%的p(AM/AA/CH-3)聚合物水溶液表现出较好的耐温性能;在质量浓度为20000 mg/L的NaCl和CaCl_(2)溶液中,质量分数为0.8%的p(AM/AA/CH-3)聚合物溶液在140℃下剪切1 h后的黏度分别为70.53和53.84 m Pa·s,体系具有良好的耐温耐剪切性。聚合物在盐溶液中表现为弹性体,增强了聚合物分子间作用力,因而形成更加致密复杂的空间网络结构,聚合物弹性增大。
A new type of polyacrylamide polymer p(AM/AA/CH-3) was synthesized by inverse emulsion polymerization of acrylamide(AM), acrylic acid(AA), and glutamic acid chelating agent(CH-3) with double bonds. The polymer obtained was then characterized by FTIR, ^(1)HNMR, SEM and laser particle size distribution analyzer, followed by evaluation of its rheological properties. The results showed that the polymer, successfully synthesized, displayed a low and uniform particle size distribution, a more compact and regular structure formed by the polymer and salt ions, and stress loop in brine solution. The p(AM/AA/CH-3) aqueous solution with a mass fraction of 0.8% showed good temperature resistance.Meanwhile, the viscosity of p(AM/AA/CH-3), with a mass fraction of 0.8% in Na Cl and CaCl_(2)(20000 mg/L) solutions, was 70.53 and 53.84 m Pa·s respectively after shearing at 140 ℃ for 1 h,indicating good temperature resistance and shear resistance. The polymer acted as an elastomer in the salt solution. The elasticity of the polymer increased because of a denser and more complex spatial network structure formed when the intermolecular force of the polymer greater than the intramolecular force.
作者
张雯娟
王磊
王丽敏
曹红燕
赖小娟
文新
张小鑫
魏向阳
ZHANG Wenjuan;WANG Lei;WANG Limin;AO Hongyan;LAI Xiaojuan;WEN Xin;ZHANG Xiaoxin;WEI Xiangyang(Key Laboratory of Auxiliary Chemistry&Technology for Light Chemical Industry of the Ministry of Education,College of Light Industry and Engineering,Shaanxi University of Science&Technology,Xi'an 7100o,Shaanxi,China;Shaanxi Agricultural Products Processing Technology Research Institute,Xi'an 710000,Shaanxi,China;The Third Oil Production Plant of Changqing Oilfield Branch,Yinchuan 750000,Ningxia,China;Xian Changqing Chemical GroupCo.,Ltd.,Xi'an710ooo,Shaanxi,China)
出处
《精细化工》
EI
CAS
CSCD
北大核心
2022年第10期2132-2140,共9页
Fine Chemicals
基金
陕西省重点研发计划项目(2021GY-237,2021GY-142)
陕西省外国专家服务项目(2022WGZJ-27)
西安市科技计划项目(21XJZZ0004)
陕西省教育厅项目(21JC005)。
关键词
耐盐
谷氨酸螯合剂
聚合物乳液
流变性能
电荷密度
油田化学品
salt tolerance
glutamate chelator
polymer emulsion
rheological properties
charge density
oil field chemicals
