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日用化学工业（中英文）

日用化学工业 ›› 2020, Vol. 50 ›› Issue (7): 433-438.doi: 10.3969/j.issn.1001-1803.2020.07.001

• 基础研究 •    下一篇

pH响应黏弹性油酰胺丙基二甲胺/邻苯二甲酸氢钾胶束体系流变性研究

崔秀(),方波(),许海涛   

  1. 华东理工大学 化工学院 流变学研究室,上海 200237
  • 收稿日期:2019-11-10 修回日期:2020-06-18 出版日期:2020-07-22 发布日期:2020-07-23
  • 通讯作者: 方波
  • 作者简介:崔 秀（1994-）,女,山东人,硕士,电话:19946260763,E-mail: XIUCUI_JDOI@163.com。
  • 基金资助:
    国家科技重大专项课题(2017ZX05023003)

Rheological properties of pH-responsive viscoelastic micellar system of oleylamidopropyl dimethyl amine/potassium hydrogen phthalate

CUI Xiu(),FANG Bo(),XU Hai-tao   

  1. Rheology Laboratory, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
  • Received:2019-11-10 Revised:2020-06-18 Online:2020-07-22 Published:2020-07-23
  • Contact: Bo FANG

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摘要：

通过考察油酰胺丙基二甲胺（PKO-O）/邻苯二甲酸氢钾（PHP）黏弹性胶束体系的稳态剪切黏度、流动曲线、剪切触变性、黏弹性、热触变性等流变学性质,研究了该胶束体系的pH响应性。结果表明,200 s-1下,pH=7.47时胶束体系稳态剪切黏度较大,为122.3 mPa·s;在pH=7.61,7.47,6.40 3个状态间,稳态剪切黏度可循环切换多次,表明该胶束体系具有良好的pH响应性;PKO-O/PHP胶束体系为剪切变稀的正触变性流体,其流动曲线可用Cross本构方程进行表征;该体系是典型的黏弹、热触变性流体,pH=7.47时体系具有较大的复模量和显著的热触变性。

关键词: 油酰胺丙基二甲胺, 邻苯二甲酸氢钾, pH响应型胶束体系, 流变学性质

Abstract:

The pH responsiveness of the viscoelastic micellar system of oleylamidopropyl dimethyl amine （PKO-O）/potassium hydrogen phthalate （PHP） was studied by investigating the rheological properties such as steady-state shear viscosity, flow curve, shear thixotropy, viscoelasticity and thermal thixotropy of the fluid. The steady-state shear viscosity of the micellar system （pH=7.47） was high, which was 122.3 mPa·s at 200 s-1. And the steady-state shear viscosity could be switched cyclically between the status at pH 7.61, 7.47 and 6.40, indicating that this micellar system had good pH responsiveness. In addition, the PKO-O/PHP micellar system was shear-thinning and positive thixotropic fluid. The flow curve could be characterized by the Cross constitutive equation. The micellar system （pH=7.47） was a typical viscoelastic fluid with high complex modulus and significant thermal thixotropy.

Key words: oleylamidopropyl dimethyl amine, potassium hydrogen phthalate, pH-responsive micellar system, rheological property

中图分类号: 

  • TQ423