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含羧基乳胶粒子体系的流变性质与碱增稠机理

韩兆让1, 刘凤岐1, 高 歌1, 杨 柏1 , 程丽莉1, 汤心颐1, 黄 丽2, 刘 奕2, 石 英2   

  1. 1. 吉林大学化学科学学院, 长春 130023; 2. 大庆石油勘探开发研究院三次采油所, 大庆 163712
  • 收稿日期:2001-03-13 修回日期:1900-01-01 出版日期:2002-07-26 发布日期:2002-07-26
  • 通讯作者: 韩兆让

Rheological Property and Alkali-thickening Mechanism of the Latex System Containing Carboxyl Groups

HAN Zhao-rang1, LIU Feng-qi1, GAO Ge1, YANG Bai1, CHENG Li-li1, TANG Xin-yi1, HUANG Li2, LIU Yi2, SHI Ying2   

  1. 1. College of Chemistry, Jilin University, Changchun 130023,China; 2. Daqing Institute of Oil Exploration and Development, Daqing 163712, China
  • Received:2001-03-13 Revised:1900-01-01 Online:2002-07-26 Published:2002-07-26
  • Contact: HAN Zhao-rang

摘要: 采用流变学实验数据分析乳胶粒子体系的致粘机理. 认为普通硬球型乳胶粒子体系的 致粘机理与聚合物链段的亲水性有关. 聚合物链段的亲水性越强, 普通硬球型乳胶 粒子体系的粘度越大. 在酸性介质中, 含羧基乳胶粒子体系的致粘机理与普通硬球型乳胶 粒子体系一致. 但在碱性介质中, 含羧基乳胶粒子体系呈现碱增稠现象, 认为这种碱增稠 现象是由粒子间氢键形成的桥式结构所致, 这一观点与早期的“乳胶粒的溶胀乃至溶解 ”的推断不同.

关键词: 乳胶粒子, 粘度, 丙烯酸, 碱增稠, 氢键

Abstract: On the basis of rheological experimental results, we analyzed the rhe ological mechanism of the latex system. The viscosity mechanism of a common hard -sphere latex particle system is considered to be related to the hydrophilicit y of the polymer chain. The stronger the hydrophilicity is, the higher the viscosity is. In the acid medium, the viscosity mechanism of the system of latex particl es containing carboxyl is the same with that of the common hard sphere latex sys tem. But in the alkali medium, the system of latex containing carboxyl appears an a lkali-thickening phenomenon. So the alkali-thickening mechanism has been consi der ed to be attributed to the bridge-structure formed from the hydrogen bonds of the particles. This opinion is different from the early deduction “from th e swell to the solution of the latex particle”.

Key words: latex particle, viscosity, acrylic acid, alkali-thickening, hydrogen bond

中图分类号: 

  • O631.1