合成和物理因素对沉淀聚合技术合成的聚丙烯酸基水凝胶性能的影响:综述

IF 4.9 3区 工程技术 Q1 ENGINEERING, CHEMICAL
Sahar Farqazrazi, Manouchehr Khorasani
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引用次数: 0

摘要

亲水性单体制成的聚合物可通过不同的交联剂交联成水凝胶。水凝胶是一种三维网络,可以吸收数倍于自身重量的水分,并在水/膨胀介质中膨胀,作为增稠剂提高介质的粘度。通过沉淀聚合技术制备的交联聚丙烯酸微颗粒通常是通过自由基聚合合成的,其结构中含有羧基官能团,这使得水凝胶的性能(如溶胀能力、颗粒形态和粘度)受溶剂、中和剂、pH值、pK a、ZETA电位和溶胀介质的离子强度等物理因素以及共聚单体、交联剂和网络类型等合成因素的控制。本文阐述了关键因素对合成和溶胀步骤的影响,以帮助实现具有理想流变特性(如溶胀/粘度优化)的聚(丙烯酸)基异凝胶,这是任何溶胀介质中增稠剂的主要目的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The effects of synthetic and physical factors on the properties of poly(acrylic acid)-based hydrogels synthesized by precipitation polymerization technique: a review
The polymer obtained from hydrophilic monomers can be transformed into a hydrogel via cross-linking by different cross-linkers. Hydrogels are three-dimensional networks that can absorb several times their weight and swell in water/swelling media, improving the media’s viscosity as a thickener. The cross-linked poly(acrylic acid) microparticles prepared via precipitation polymerization technique are often synthesized by radical polymerization and have carboxylic functional groups in their structure, which make the hydrogel properties such as swelling capacity, particle morphology, and viscosity be controlled by physical factors such as solvent, neutralizer, pH, pK a , zeta potential, and ionic strength of the swelling media, as well as synthetic factors including comonomer, cross-linker, and network type. In this paper, the effects of crucial factors on the synthetic and swelling steps are elaborated to facilitate the achievement of poly(acrylic acid)-based xerogels having desirable rheological properties, such as swelling/viscosity optimization, which is the primary purpose of a thickener in any swelling media.
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来源期刊
Reviews in Chemical Engineering
Reviews in Chemical Engineering 工程技术-工程:化工
CiteScore
12.30
自引率
0.00%
发文量
37
审稿时长
6 months
期刊介绍: Reviews in Chemical Engineering publishes authoritative review articles on all aspects of the broad field of chemical engineering and applied chemistry. Its aim is to develop new insights and understanding and to promote interest and research activity in chemical engineering, as well as the application of new developments in these areas. The bimonthly journal publishes peer-reviewed articles by leading chemical engineers, applied scientists and mathematicians. The broad interest today in solutions through chemistry to some of the world’s most challenging problems ensures that Reviews in Chemical Engineering will play a significant role in the growth of the field as a whole.
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