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第 36 卷第 6 期 精 细 化 工 Vol.36, No.6
201 9 年 6 月 FINE CHEMICALS June 2019

水处理技术与环境保护
冷冻交联制备 ZM-CSt-PVA 复合

2+
凝胶及吸附 Cu 性能

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王梓民 ，石海信 ，王爱荣 ，王 锋 ，何 强
（1. 北部湾大学 石油与化工学院，广西 钦州 535011；2. 广西大学 化学化工学院，广西 南宁 530004）
摘要：以两性离子单体二甲氨基丙基丙烯酰胺-1-羧酸（ZM）、木薯淀粉（CSt）和聚乙烯醇（PVA）为主要原料，
采用“一锅法”，通过冷冻交联制备 ZM 接枝共聚 CSt-PVA 互穿网络复合凝胶（ZPG2）。使用 FTIR、TGA、POM、
2+
SEM-EDS 对 ZPG2 进行了表征，评价了 ZPG2 对 Cu 的静态吸附效果。结果表明：300 ℃以下，ZPG2 的热稳
定性良好；ZM 的存在可产生反聚电解质效应和化学配位效应，显著提高凝胶吸附能力；在吸附温度 25 ℃、ZPG2
3
0.1 g、Cu 2+ 质量浓度 2×10 mg/L、溶液体积 100 mL 时，饱和吸附量为 199 mg/g；吸附过程符合 Langmuir 等温
吸附模型和准二级动力学模型。
关键词：互穿网络凝胶；反聚电解质效应；冷冻交联法；两性离子；聚乙烯醇；吸附；淀粉；水处理技术
中图分类号：TQ085; O648.17 文献标识码：A 文章编号：1003-5214 (2019) 06-1198-06

Preparation of ZM-CSt-PVA Composite Gel though Freezing Cross-linking
2+
Method and Its Adsorption Performance of Cu

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WANG Zi-min , SHI Hai-xin , WANG Ai-rong , WANG Feng , HE Qiang
（1. College of Petroleum and Chemical Engineering, Beibu Gulf University, Qinzhou 535011, Guangxi, China; 2. School of
Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Guangxi, China）
Abstract: Zwitterionic monomer (ZM), cassava starch (CSt) and polyvinyl alcohol (PVA) were used as
main raw materials to prepare a ZM graft copolymerized CSt-PVA interpenetrating network composite gel
(ZPG2) through freezing cross-linking method with a one-pot process. ZPG2 was characterized by FTIR,
2+
TGA, POM, SEM-EDS. The static adsorption effect of ZPG2 on Cu was evaluated. The results showed
that ZPG2 had good thermal stability below 300 ℃. The presence of ZM produced an anti-polyelectrolyte
effect and a chemical coordination effect, which increased the gel adsorption capacity significantly.
Saturated adsorption amount was as much as 199 mg/g when adsorption temperature was 25 ℃, ZPG2
3
2+
dosage was 0.1 g, Cu mass concentration was 2×10 mg/L, and solution volume was 100 mL. The data of
adsorption isotherm was well described by the Langmuir isotherm adsorption model while the adsorption
kinetics of ZPG2 fitted well with the pseudo-second-order kinetic model.
Key words: interpenetrating network gel; anti-polyelectrolyte effect; freezing cross-linking method; zwitterion;
polyvinyl alcohol; adsorption; starch; water treatment
Foundation items: High Level Innovation Team and Outstanding Scholar Program in Guangxi Higher
Education Institution ([2016]42), Basic Competence Improvement Project for Middle and Young Teachers
in Colleges and Universities of Guangxi Department of Education (2018KY0618), Key Laboratory of
Beibu Gulf Oil and Natural Gas Resource Effective Utilization of Guangxi Colleges and Universities
(2019KLOG13)

收稿日期：2018-10-22; 定用日期：2019-02-22; DOI: 10.13550/j.jxhg.20180785
基金项目：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（2017KLOG13）
作者简介：王梓民（1979—），男，高级工程师，博士。联系人：石海信(1962—)，男，教授，E-mail：shihaixin2006@163.com。