基于准四聚体表面活性剂的协同响应蠕虫状胶束。

CO-Responsive Wormlike Micelles Based on Pseudo-Tetrameric Surfactant.

机构信息

State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu 610065, China.

Research Institute of Experiment and Detection, Xinjiang Oilfield Company, Karamay 834000, China.

出版信息

Molecules. 2022 Nov 16;27(22):7922. doi: 10.3390/molecules27227922.

DOI:10.3390/molecules27227922

PMID:36432021

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9698177/

Abstract

Wormlike micelles, which are linear aggregates created by the self-assembly of surfactants, may entangle to form dynamic three-dimensional network-like structures, endowing solutions with considerable macroscopic viscoelasticity. Recently, a pressing need has arisen to research a novel stimuli-responsive worm-like micelle that is efficient and environmentally friendly. CO is an inexpensive, abundant, non-toxic, biocompatible, and non-combustible gas, and it is anticipated that CO may serve as the trigger for stimuli-responsive worm-like micelles. In this paper, the formation of CO-switchable pseudo-tetrameric surfactants, which subsequently self-assemble into CO-switched wormlike micelles, is accomplished using a simple mixing of two commercial reagents, such as stearic acids and cyclen. The rheological characteristics switched by the use of CO are cycled between that of a low-viscosity (1.2 mPa·s) fluid and a viscoelastic fluid (worm-like micelles, 3000 mPa·s). This article expands the field of study on stimuli-responsive worm-like micelles.

摘要

蠕虫状胶束是由表面活性剂自组装形成的线性聚集体，可能会缠结形成动态的三维网状结构，从而赋予溶液相当大的宏观粘弹性。最近，人们迫切需要研究一种新型的刺激响应型蠕虫状胶束，这种胶束既高效又环保。CO 是一种廉价、丰富、无毒、生物相容且不可燃的气体，预计 CO 可以作为刺激响应型蠕虫状胶束的触发剂。在本文中，通过简单地混合两种商业试剂（如硬脂酸和环糊精），形成了 CO 开关型拟四聚体表面活性剂，然后自组装成 CO 开关型蠕虫状胶束。使用 CO 进行的流变特性在低粘度（1.2 mPa·s）流体和粘弹性流体（蠕虫状胶束，3000 mPa·s）之间循环切换。本文扩展了刺激响应型蠕虫状胶束的研究领域。