Page 109 - 《精细化工》2021年第4期

第 38 卷第 4 期 精 细 化 工 Vol.38, No.4
202 1 年 4 月 FINE CHEMICALS Apr. 2021

功能材料
PNIPAM/锂藻土/GO 近红外光响应

水凝胶的制备及其应用初探

阿尔普丁·艾尼娃尔，王鸿月，孟小琪，何新宇，
*
杨 霜，余海溶，左 芳
（西南民族大学 化学与环境学院，四川 成都 610041）

摘要：以锂藻土（L）为交联剂、氧化石墨烯（GO）为光热转换试剂，通过 N-异丙基丙烯酰胺（NIPAM）原位
聚合，制备了近红外光（NIR）响应（L-PNIPAM/GO）水凝胶。考察了锂藻土含量对 L-PNIPAM 水凝胶的断裂
伸长率和拉伸强度的影响，并考察了 GO 含量对 L-PNIPAM/GO 水凝胶相关性能的影响。对所制备的水凝胶体
积相转变温度（VPTT）及 NIR 响应性进行了表征，并对 L-PNIPAM/GO 水凝胶在光控流体开关及光控脱附方面
的应用进行了初步探索。结果表明，当锂藻土和 GO 含量分别为 NIPAM 质量的 12.0%和 0.21%时，制备的
L-PNIPAM/GO-12.0-0.21 水凝胶具有较高的拉伸强度和良好的韧性，拉伸强度为 123.98 kPa，断裂伸长率可达
1181%，L-PNIPAM/GO-12.0-0.21 水凝胶的 VPTT 为 36 ℃；NIR 照射下，L-PNIPAM/GO-12.0-0.21 水凝胶能在
300 s 内从 20.3 ℃升温至 48.5 ℃，具有温敏性和光热效应，展示了用于光控流体开关及光控脱附的潜力。
关键词：N-异丙基丙烯酰胺；氧化石墨烯；温敏性；光热效应；功能材料
中图分类号：TQ427.2 文献标识码：A 文章编号：1003-5214 (2021) 04-0743-06

Preparation and preliminary application of PNIPAM/laponite/graphene
oxide near-infrared light responsive hydrogels

A Erpuding·AI NIWAER, WANG Hongyue, MENG Xiaoqi, HE Xinyu,
*
YANG Shuang, YU Hairong, ZUO Fang
（College of Chemistry & Environmental, Southwest Minzu University, Chengdu 610041, Sichuan, China）

Abstract: Near-infrared light (NIR) responsive (L-PNIPAM/GO) hydrogels were prepared by in situ
polymerization of N-isopropylacrylamide (NIPAM) using laponite (L) as crosslinking agent and graphene
oxide (GO) as photothermal conversion reagent. The effects of laponite content on the breaking elongation
and tensile strength of L-PNIPAM hydrogels were investigated. And the effects of GO content on the
related properties of L-PNIPAM/GO hydrogels were studied. The volume phase transition temperature
(VPTT) and NIR responsiveness of the prepared hydrogels were characterized and the application of
L-PNIPAM/GO hydrogel in light-controlled fluid switch and light-controlled desorption was preliminary
explored. The results showed that when the contents of laponite and GO were 12.0% and 0.21% of NIPAM
mass, the prepared L-PNIPAM/GO-12.0-0.21 hydrogel had high strength and good toughness, the tensile
strength and elongation at break was 123.98 kPa and 1181%. The VPTT of L-PNIPAM/GO-12.0-0.21
hydrogel was about 36 ℃. Under NIR irradiation, the temperature of L-PNIPAM/GO-12.0-0.21 hydrogel
rose from 20.3 ℃ to 48.5 ℃ within 300 s, indicating that L-PNIPAM/GO-12.0-0.21 hydrogel had
temperature sensitivity and photothermal effect. Thus, L-PNIPAM/GO-12.0-0.21 has the potential as
light-controlled adhesion reagent and fluid switch.

收稿日期：2020-11-01; 定用日期：2021-02-01; DOI: 10.13550/j.jxhg.20201014
基金项目：四川省教育厅重点项目（18ZA0510）；西南民族大学研究生创新型科研项目（CX2019SZ57）
作者简介：阿尔普丁·艾尼娃尔（1994─），男，硕士生，E-mail: polymerad@163.com。联系人：左 芳（1980─），女，研究员，E-mail:
polymerzf@swun.cn。