胶束修饰疏水缔合聚合物聚合机理及流变性能研究
Polymerization mechanism and rheological property of micelle-modified hydrophobically coupled polymers
文新 1王磊 1王嘉鑫 2姚传高 3杨蓉 1杨雯雯1
作者信息
- 1. 陕西科技大学中国轻工业轻化工助剂重点实验室,陕西 西安 710021;陕西农产品加工技术研究院,陕西 西安 710021
- 2. 中国石油长庆油田油气工艺研究院,陕西 西安 710018
- 3. 中国石油长庆油田分公司第三采气厂,内蒙古 鄂尔多斯 017399
- 折叠
摘要
以椰油酰胺丙基甜菜碱(CAB)为分散剂,将油酸(OA)、N,N-二甲基丙二胺(DMAPA)、氯丙烯(AC)合成的疏水单体KS-3 与丙烯酰胺(AM)经自由基聚合得到聚合物RES.临界胶束浓度、TEM与粒径测试结果表明,KS-3 与CAB在AM单体溶液中混合时呈现良好的协同效应,且可形成蠕虫状胶束.研究KS-3 的胶束状态与AM的聚合机理发现,RES具有更好的热稳定性、更小的临界缔合浓度,同时分子聚集更加紧密,在水溶液中形成密度更高的网络结构.利用流变仪对RES进行耐温性、触变性及黏弹性测试,RES展现出优良的耐温性、更大的触变环及更好的黏弹性,且G'>G",聚合物具有更强的缔合结构.
Abstract
Taking cocamidopropyl betaine(CAB)as the dispersant,the hydrophobic monomer KS-3 synthesized from oleic acid(OA),N,N-dimethylpropylenediamine(DMAPA),and chloropropylene(AC)is polymerized with acrylamide(AM)by free-radical to obtain the polymer RES.Critical micellar concentration,TEM,and particle size tests show that KS-3 and CAB present a good synergistic effect and can form worm-like micelles when they mix in the AM monomer solution.It is found through analyzing the micelle state of KS-3 and the polymerization mechanism between KS-3 and AM that RES has better thermal stability,smaller critical aggregation concentration,and more compact molecular aggregation,forming a higher density network structure in aqueous solution.Through temperature resistance,thixotropy and viscoelasticity tests to RES by a rheometer,RES shows excellent temperature resistance,larger thixotropic loops,and better viscoelasticity.The polymers have stronger associative structure.
关键词
蠕虫胶束/协同效应/疏水缔合/触变性/黏弹性Key words
wormlike micelles/synergistic effect/hydrophobically coupling/thixotropy/viscoelasticity引用本文复制引用
基金项目
陕西省重点研发计划(2024GX-YBXM-393)
西安市科技计划项目(22GXFW0014)
陕西省教育厅项目(23JC008)
出版年
2024
NETL
NSTL
万方数据