反相微乳液型疏水缔合共聚物溶液性质  

Solution Properties of Hydrophobic Associating Copolymer through Inverse Microemulsion

作　　者：马国艳 李小瑞[2] 曾立祥 折利军 王小荣[5] 车二强 MA Guo-yan;LI Xiao-rui;ZENG Li-xiang;SHE Li-jun;WANG Xiao-rong;CHE Er-qiang(College of Chemisitry & Chemical Engineering , Xi’an Shiyou University, Xi’an 710065, China;Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science & Technology , Xi’an 710021, China;Xianyang Chemical Branch, Xi’an Changqing Chemical Group Co., Ltd., Xianyang 712000, China;Oil Production Plant No.1 CNPC Changqing Oilfield Company, Yan’an 716000, China;College of Chemistry & Chemical Engineering, Xianyang Normal University,Xianyang 712000, China)

机构地区：[1]西安石油大学化学化工学院,西安710065 [2]陕西科技大学陕西省轻化工助剂重点实验室,西安710021 [3]西安长庆化工集团有限公司咸阳化学试剂分公司,咸阳712000 [4]中国石油长庆油田分公司第一采油厂,延安716000 [5]咸阳师范学院化学与化工学院,咸阳712000

出　　处：《高分子通报》2019年第7期37-43,共7页Polymer Bulletin

基　　金：咸阳师范学院专项科研项目(XSYK18004)

摘　　要：以2-丙烯酰胺基长链烷基磺酸钠(SADS)为疏水单体,通过SADS与丙烯酰胺(AM)、丙烯酸(AA)进行反相微乳液聚合反应,制备了一种乳液型疏水缔合共聚物(SPAMA)。采用表面张力仪研究了SADS的表面活性,通过激光粒度散射仪对SPAMA乳液粒径大小及分布进行了表征,并通过动态流变仪对SPAMA水溶液的流变性能分别进行了测试。表面张力测试结果表明,在25℃下,SADS的临界胶朿浓度为0.25g·L^-1,此时的表面张力为25.42mN·m^-1。粒径测试结果表明,SPAMA乳液的粒径为68.06nm,多分散系数PDI为0.055。流变测试结果表明,不同质童浓度下,SPAMA水溶液属于假塑性流体,临界缔合浓度(c*)为1.62g·L-1.黏弹性测试表明,SPAMA是典型的黏弹性流体,储能模量G′大于损耗模量G″,表现出明显的弹性特征。A hydrophobic associating copolymer (SPAMA) emulsion was synthesized by using sodium 2-acrylamido-alkyl sulfonate (SADS) as hydrophobic monomer, acrylamide (AM) and acrylic acid (AA) as raw materials through the inverse microcmulsion polymerization. The surface activity of SADS was determined by the surface tension method. The particle size distribution and rheology properties of the SPAMA emulsion were characterized by the Dynamic light scattering (DLS) and dynamic rheometer, respectively. The critical micelle concentration (CMC) of SADS is 0. 25g · L-1 at 25℃, and the surface tension is 25. 42mN·m-1. The average particle size of the SPAMA emulsion is 68. 06nm, and the polydispersity coefficient is 0.055. According to the rheological test results, SPAMA aqueous solution is a pseudoplastic fluid and its critical associating concentration (c*) is 1. 62g·L-1. The SPAMA is a typical viscoelastic fluid based on the viscoelasticity tests. The value of storage modulus (G′) is larger than loss modulus (G″).SPAMA displays obvious elastic characteristics.

关 键 词：反相微乳液 表面活性单体 疏水缔合 流变性 黏弹埤 

分 类 号：TQ316.333[化学工程—高聚物工业]