微支化聚丙烯酰胺的支化结构表征及热稳定性/流变性研究  

Branching structure characterization and thermal stability/rheological properties of slightly branched PAM

作　　者：李海涛[1,2] 祝仰文 徐辉 孙秀芝 崔传智 杨雪杉[3] LI Hai-tao;ZHU Yang-wen;XU Hui;SUN Xiu-zhi;CUI Chuan-zhi;YANG Xue-shan(China University of Petroleum(East China),Qingdao 266580,China;Exploration andDevelopment Research Institute,Shengli Oilfield Co.,Ltd.,SINOPEC,Dongying 257015,China;Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]中国石油大学(华东),山东青岛266580 [2]胜利油田分公司勘探开发研究院,山东东营257015 [3]西南石油大学,四川成都610500

出　　处：《应用化工》2021年第1期5-9,共5页Applied Chemical Industry

基　　金：国家科技重大专项(2016ZX05011-003)。

摘　　要：以过硫酸铵(APS)和甲基丙烯酸二甲氨基乙酯(DMAEMA)为引发体系,在水溶液中采用常规自由基聚合制备了不同支化程度的聚丙烯酰胺(b-PAM)。考察了微支化结构和支化程度对聚合物热稳定性和流变性的影响。结果表明,支化结构能够明显提高聚合物的热稳定性、抗剪切性和剪切稀释性以及粘弹性,且各项性能随着支化度的增加而增强。A series of branched polyacrylamide(b-PAM)were prepared by using APS-DMAEMA as the initiating system in conventional radical polymerization in aquous water.The existence of slightly branched structure in b-PAM was demonstrated.The results indicate that the branching structure of PAM can significantly enhance the thermal stability,shear resistance,shear-thinning and viscoelaticity,as well as those properties can be further improved with increasing branching degree.

关 键 词：聚丙烯酰胺 微支化结构 支化因子 热稳定性 流变性 

分 类 号：TQ317[化学工程—高聚物工业] TE39[石油与天然气工程—油气田开发工程]