Preparation and application of polyacrylamide porous hydrogel by high internal phase emulsion polymerization

被引：0
作者：
Chang W. [1 ]
Shi Q. [2 ]
Zhao Z. [1 ]
Wang R. [1 ]
Wang Z. [1 ]
Zhao J. [1 ]
机构：
[1] Engineering Laboratory of Chemical Resources Utilization in South Xinjiang of Xinjiang Production and Construction Corps, Tarim University, Xinjiang, Alar
[2] Quality and Technique Supervision Bureau, Xinjiang, Alar
来源：
Huagong Jinzhan/Chemical Industry and Engineering Progress | 2022年 / 41卷 / 07期
关键词：
high internal phase emulsions; Mn(II) adsorption; polyacrylamide; porous hydrogel;
D O I：
10.16085/j.issn.1000-6613.2021-1793
中图分类号：
学科分类号：
摘要：
Hydrophilic silica nanoparticles (N20) and emulsifier Tween80 were used as composite stabilizers and cyclohexane as oil phase to prepare high internal phase emulsions (HIPEs). Polyacrylamide (PAM) porous hydrogel was prepared by polymerizing acrylamide in the outer phase with this emulsion as template. The optical microscope photographs of HIPEs and the SEM images of PAM porous hydrogel showed that the amount of N20 and Tween80 affectted the pore appearance and diameter of the material. Mercury injection apparatus results showed that the average pore size of porous hydrogel was 38.06nm, the porosity was 77.54%, and the saturated water absorption rate of 20h reached 402g/g when the dosage of N20 was 3% and Tween 80 was 9%. Adsorption experiments showed that PAM porous hydrogel has good adsorption properties for Mn(II). The adsorption process conforms to the quasi second-order kinetic equation and belongs to chemical adsorption. When the solution pH was 4, the adsorption saturation reached in 120min and the adsorption amount was 474.64mg/g. © 2022 Chemical Industry Press. All rights reserved.
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页码：3832 / 3839
页数：7
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