反相乳液聚合法制备缔合型耐盐聚合物及其流变性能
Preparation and rheological properties of associative salt tolerant polymer by inverse-phase emulsion polymerization
刘雅梦 1赖小娟 1杨振福 2YASIR M.F.Mukhtar 3文新 1卢丽娟1
作者信息
- 1. 陕西科技大学 化学与化工学院 轻化工助剂化学与技术教育部重点实验室,陕西 西安 710021
- 2. 中国石油集团川庆钻探工程有限公司 长庆石油工程监督公司,陕西 西安 710021
- 3. 苏丹科技大学 工程学院,苏丹 喀土穆 47500
- 折叠
摘要
以丙烯酰胺(AM)、2-丙烯酰胺-十二烷基磺酸钠(AMC12S)、疏水单体29-(4-辛基苯氧基)-3,6,9,12,15,18,21,24,27-壬氧烷酮基甲基丙烯酸酯(GTE-10)为原料,通过反相乳液聚合法制备了一种缔合型耐盐聚合物p(AM/AMC12S/GTE-10).通过FTIR、1HNMR、SEM、TEM及激光粒度分析仪对其结构和形貌进行了表征,并对其流变性能、触变性能和黏弹性进行了评价.结果表明,疏水单体GTE-10成功引入聚合物中,聚合完成后的乳液粒径分布集中且均一,盐(NaCl、CaCl2)的加入使p(AM/AMC12S/GTE-10)分子聚集态更紧密,形成的空间网络结构更稳定.质量分数为0.7%的p(AM/AMC12S/GTE-10)聚合物水溶液在140℃时表现出较好的耐温性能;在120℃、170 s-1条件下剪切1 h,在质量浓度为20000 mg/L的NaCl和CaCl2水溶液中分别配制质量分数0.7%的聚合物溶液,其表观黏度分别为 64.8 和 54.1 mPa·s;聚合物具有较好的剪切恢复性能;盐水条件下储能模量大于损耗模量,金属离子与苯氧乙烯基发生络合反应,使分子间作用力增强,形成的空间结构更稳定且难被破坏,黏弹性更高.
Abstract
An associative salt tolerant polymer p(AM/AMC12S/GTE-10)was prepared from reverse-phase emulsion polymerization of acrylamide(AM),2-acrylamide-sodium dodecyl sulfonate(AMC12S)and hydrophobic monomer 29-(4-octylphenoxy)-3,6,9,12,15,18,21,24,27-nonaoxanonacosyl methacrylate(GTE-10).The structure and morphology of the obtained polymer were then characterized by FTIR,1HNMR,SEM,TEM and laser particle size analyzer,followed by evaluation on its rheological properties,thixotropic properties and viscoelasticity.The results showed that the hydrophobic monomer GTE-10 was successfully introduced into the polymer,and the particle size distribution of the emulsion after polymerization was narrow and uniform.The addition of salt(NaCl,CaCl2)made the aggregation of p(AM/AMC12S/GTE-10)molecules more compact and the spatial network structure formed more stable.p(AM/AMC12S/GTE-10)polymer aqueous solution with a mass fraction of 0.7%showed good temperature resistance at 140℃.After being sheared at 120℃and 170 s-1 for 1 h,the polymer solutions with a mass fraction of 0.7%prepared in mass concentration of 20000 mg/L NaCl and CaCl2 aqueous solutions exhibited apparent viscosities of 64.8 and 54.1 mPa·s,respectively,with good shear recovery performance.Meanwhile,the energy storage modulus was higher than the loss modulus,and the complex reaction between metal ion and phenoxyethylene group enhanced the intermolecular force,leading to more stable spatial structure and higher viscoelasticity.
关键词
反相乳液聚合/耐盐/流变性能/黏弹性/触变性/油田化学品Key words
inverse-phase emulsion polymerization/salt tolerance/rheological property/viscoelasticity/thixotropy/oil field chemicals引用本文复制引用
基金项目
陕西省外国专家服务计划(2023WGZJ-ZD-03)
陕西省重点研发计划(2023-YBGY-307)
陕西省教育厅产业化项目(23JC008)
出版年
2024
NETL
NSTL
维普
万方数据