科学研究

CSt-g-AA-DMAPAA吸水树脂的制备及在盐水中的溶胀性能

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  • 1.北部湾大学,广西高校北部湾石油天然气资源有效利用重点实验室,钦州535011;
    2.广西大学化学化工学院,南宁530004
王梓民(1979-),男,博士,高级工程师,主要研究方向为高分子材料、应用化学,E-mail:wangzimin0817@163.com。

收稿日期: 2019-10-08

  修回日期: 2020-10-15

  网络出版日期: 2021-01-27

基金资助

广西高校高水平创新团队及卓越学者计划(桂教人[2016]42号);广西教育厅高校中青年教师基础能力提升项目(2018KY0618);广西高校北部湾石油天然气资源有效利用重点实验室基金项目(2017KLOG13)

Preparation of CSt-g-AA-DAMPAA absorbent resin and evaluation of its swelling performance in brine

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  • 1. Guangxi College and University Key Laboratory of Beibu Gulf Oil and Natural Gas Resource Effective,Beibu gulf University,Qinzhou 535011;
    2. School of Chemistry and Chemical Engineering,Guangxi University,Nanning 530004

Received date: 2019-10-08

  Revised date: 2020-10-15

  Online published: 2021-01-27

摘要

以木薯淀粉(CSt)、丙烯酸(AA)和二甲胺基丙基丙烯酰胺(DMAPAA)为主要原料,通过水溶液聚合法制备了CSt-g-AA-DMAPAA吸水树脂。使用红外光谱(FT-IR)、热重-红外同步分析(TGA-DTG-FTIR)和X射线衍射(XRD)对样品进行了表征。评价了样品在纯水和不同浓度NaCl、CaCl2或AlCl3盐水中的溶胀性能并分析溶胀动力学。结果表明:样品在200℃以下热稳定性良好,CSt从结晶态转变为无定型;样品在纯水中的溶胀符合二级动力学模型,在浓度5%的NaCl、CaCl2或AlCl3盐水中,溶胀倍率分别为18.09g/g、18.25g/g或19.24g/g;样品在超高浓度盐水中不聚沉,表现出良好的耐盐性能。

本文引用格式

王梓民, 石海信, 王爱荣, 爨珊珊, 何强, 王锋 . CSt-g-AA-DMAPAA吸水树脂的制备及在盐水中的溶胀性能[J]. 化工新型材料, 2021 , 49(1) : 180 -183 . DOI: 10.19817/j.cnki.issn 1006-3536.2021.01.040

Abstract

Using cassava starch (CSt),acrylic acid(AA) and dimethylaminopropyl acrylamide (DMAPAA) as main raw materials,CSt-g-AA-DMAPAA absorbent resin was prepared though solution polymerization.The sample was characterized using FT-IR,TGA-DTG-FTIR and XRD.Swelling properties of the sample in pure water and NaCl with different concentration,CaCl2 or AlCl3 brine were evaluated.Swelling kinetics was analyzed.The results showed that the samples had good thermal stability under 200℃.CSt changed from crystal to amorphous structure.The data of swelling was in accord with second-order kinetic model.Swelling ratio was 18.09g/g,18.25g/g and 19.24g/g in a mass concentration of 5% NaCl,CaCl2 or AlCl3 brine,respectively.The sample did not precipitate in ultra-high concentration brine and it exhibited good salt-resistant properties.

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