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第 36 卷第 3 期 精 细 化 工 Vol.36, No.3
201 9 年 3 月 FINE CHEMICALS Mar. 2019

功能材料
γ-聚谷氨酸/凹凸棒石复合高吸水树脂的制备及性能

祁晓华，李传强，郭春文，牟元华，蒋金芸，吕 璐

（重庆交通大学 交通土建工程材料国家地方联合工程实验室，材料科学与工程学院，重庆 400074）

摘要：以 γ-聚谷氨酸（γ-PGA）和凹凸棒石（ATP）为原料，以聚乙二醇二缩水甘油醚为交联剂，制备了 γ-聚谷
氨酸/凹凸棒石复合高吸水树脂，采用 FTIR 和 SEM 对其形貌和结构进行了表征。考察了 γ-聚谷氨酸质量分数和
凹凸棒石用量对复合高吸水树脂溶胀度的影响，发现当 γ-PGA 的质量分数为 14%，ATP 用量为 6%（以 γ-PGA
的质量计,下同）时，样品在蒸馏水中的溶胀度较高，为 820 g/g。同时，考察了溶液 pH、NaCl 质量分数、ZnCl 2
质量分数和 Na 2 SO 3 质量分数对复合树脂溶胀行为的影响，结果表明，适宜的 pH 为 5~9；溶液中离子的质量分
数越低，复合高吸水树脂的溶胀度越大；ZnCl 2 溶液对树脂溶胀行为影响较大。此外，复合高吸水树脂具有较好
的保水性能。
关键词：凹凸棒石；复合高吸水树脂；溶胀行为；保水性能；重复使用性能；功能材料
中图分类号：TQ322.9 文献标识码：A 文章编号：1003-5214 (2019) 03-0414-08

Preparation and Properties of γ-Polyglutamic Acid/Attapulgite
Superabsorbent Composite

QI Xiao-hua, LI Chuan-qiang, GUO Chun-wen, MOU Yuan-hua, JIANG Jin-yun, LV Lu
（National and Local Joint Engineering Laboratory of Traffic Civil Engineer Material, College of Materials Science
and Engineering, Chongqing Jiaotong University, Chongqing 400074, China）

Abstract: A γ-polyglutamic acid/attapulgite superabsorbent composite was prepared using γ-polyglutamic
acid and attapulgite as materials, and polyethylene glycol glycidyl ether as crosslinking agent. The structure
and surface morphology of the superabsorbent composite were characterized by Fourier transformation
infrared spectroscopy (FTIR) and scanning electron microscope (SEM). The effects of the mass fraction of
γ-polyglutamic acid and attapulgite, pH value of solution, the mass fractions of NaCl, ZnCl 2 and Na 2SO 3 on
the swelling ratio were investigated in distilled water.The results showed that the suitable mass fraction of
γ-polyglutamic acid was 14%, the suitable ATP dosage(weight ratio of ATP to γ-PGA) was 6%, and the
suitable pH value was 5~9. The lower the mass fraction of the ions in the solution, the greater the swelling
degree of the superabsorbent composite. ZnCl 2 aqueous solution had a great influence on the swelling
behavior of γ-polyglutamic acid/attapulgite superabsorbent composite. In addition, the superabsorbent
composite had good water retention.
Key words: attapulgite; superabsorbent composite; swelling behavior; water retention; reswelling ability;
functional materials
Foundation items: National and Local Joint Engineering Laboratory of Traffic Civil Engineer Material
(LHSYS-2016-008); Scientific Research Project of Chongqing Jiaotong University (2019500853);
Foundation and Frontier Research Program of Chongqing Municipal Science and Technology Commission
(cstc2017jcyjAX0310); Science and Technology Research Project of Chongqing Municipal Education
Commission (KJ1705124)

高吸水树脂为近年发展起来的一种新型功能高 分子材料，其具有轻度交联的三维网状结构，能够

收稿日期：2018-05-31; 定用日期：2018-11-19; DOI: 10.13550/j.jxhg.20180396
基金项目：重庆交通大学交通土建工程材料国家地方联合工程实验室开放基金项目（LHSYS-2016-008）；重庆交通大学科研启动项目
（2019500853）；重庆市基础研究与前沿探索项目（cstc2017jcyjAX0310）；重庆市教委科学技术研究项目（KJ1705124）
作者简介：祁晓华（1982—），女，副教授，博士，E-mail：qixiaohua820602@163.com。