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由全氟壬酸/十四烷基二甲基氧化胺体系形成的囊泡水凝胶。

Vesicle Hydrogels Formed from the Perfluorononanoic Acid/Tetradecyl Dimethylaminoxide Oxide System.

作者信息

Zhang Juan, Liu Ping, Gao Yuan, Lv Qichao, Wu Denglai, Tian Yi, Tang Jigui

机构信息

State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, SINOPEC Exploration and Production Research Institute, Beijing 102206, P. R. China.

Research and Development Center for the Sustainable Development of Continental Sandstone Mature Oilfield by National Energy Administration, SINOPEC Exploration and Production Research Institute, Beijing 102206, P. R. China.

出版信息

ACS Omega. 2024 Jun 14;9(25):27509-27516. doi: 10.1021/acsomega.4c02696. eCollection 2024 Jun 25.

DOI:10.1021/acsomega.4c02696
PMID:38947782
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11209883/
Abstract

Vesicle hydrogels are supramolecular structures formed by the self-assembly of surfactant molecules in solution, which have great application prospects. The phase behavior of perfluorononanoic acid (CFCOOH) and an amphoteric hydrocarbon surfactant, tetradecyl dimethylaminoxide (CDMAO), in an aqueous solution has been studied. By changing the mixing ratio and concentration of CFCOOH and CDMAO, the phase diagram of the system was drawn, and interestingly, a hydrogel composed of polyhedral and spherical vesicles was successfully constructed. The formation mechanism of the polyhedral and spherical vesicle hydrogel was studied by differential scanning calorimetry (DSC), small-angle X-ray diffraction (XRD), wide-angle X-ray scattering (WAXS), and H nuclear magnetic resonance (H NMR) measurements, and the rheological properties and influencing factors of the hydrogel were systematically investigated. The formation of the vesicle hydrogels in this system was considered to be caused by the "cocrystallization" of two surfactant molecular chains.

摘要

囊泡水凝胶是表面活性剂分子在溶液中自组装形成的超分子结构，具有广阔的应用前景。研究了全氟壬酸（CFCOOH）和两性烃类表面活性剂十四烷基二甲基氧化胺（CDMAO）在水溶液中的相行为。通过改变CFCOOH和CDMAO的混合比例和浓度，绘制了该体系的相图，有趣的是，成功构建了由多面体和球形囊泡组成的水凝胶。通过差示扫描量热法（DSC）、小角X射线衍射（XRD）、广角X射线散射（WAXS）和氢核磁共振（H NMR）测量研究了多面体和球形囊泡水凝胶的形成机理，并系统研究了水凝胶的流变性质及其影响因素。该体系中囊泡水凝胶的形成被认为是由两种表面活性剂分子链的“共结晶”引起的。

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本文引用的文献

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Hydrogels Consisting of Vesicles Constructed via the Self-Assembly of a Supermolecular Complex Formed from α-Cyclodextrin and Perfluorononanoic Acid.
由α-环糊精和全氟壬酸形成的超分子复合物自组装构建的囊泡水凝胶。
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