聚N-异丙基丙烯酰胺/SiO2纳米复合水凝胶的制备及性能

doi:10.3969/j.issn.1000-1565.2018.05.008

河北大学学报(自然科学版) ›› 2018, Vol. 38 ›› Issue (5): 496-502.DOI: 10.3969/j.issn.1000-1565.2018.05.008

聚N-异丙基丙烯酰胺/SiO₂纳米复合水凝胶的制备及性能

周莉莉,刘艳霞,刘乐,冯献起

收稿日期:2017-12-01 出版日期:2018-09-25 发布日期:2018-09-25
通讯作者: 冯献起(1983-),男,山东莘县人,燕京理工学院讲师,博士,主要从事功能纳米复合材料研究. E-mail:fengxianqi@yit.edu.cn
作者简介:周莉莉(1983-),女,河北涿州人,燕京理工学院讲师,主要从事生物材料研究. E-mail: zhoulili@yit.edu.cn
基金资助:
国家自然科学基金资助项目(21174017);廊坊市科技支撑计划项目(2018013025)

Fabrication and characterization of poly(N-isopropylacrylamide) /SiO₂ nanocomposite hydrogels

ZHOU Lili, LIU Yanxia, LIU Le, FENG Xianqi

School of Chemical and Materials Engineering, Yanching Institute of Technology, Langfang 065201, China

Received:2017-12-01 Online:2018-09-25 Published:2018-09-25

摘要/Abstract

摘要： 用一种简便、通用的方法,以N-异丙基丙烯酰胺为单体,以修饰二氧化硅为交联剂和增强剂,制备出一种具有较高机械强度和良好温度响应性能的聚N-异丙基丙烯酰胺/SiO₂ PNIPAm/m-SiO₂纳米复合水凝胶.采用TEM、SEM、傅里叶变换红外光谱、万能实验机和差示扫描量热法,对水凝胶的结构、机械性能和热力学性能,进行了分析、测试和表征.研究结果表明:该复合水凝胶具有孔径均匀分布的三维网状结构(孔径约1 μm)、高的机械强度(压缩强度可以达到8 MPa)和良好的韧性,并在35 ℃左右具有明显的相转变行为(去溶胀性能).

关键词: 水凝胶, 纳米复合材料, 二氧化硅, 高强度, 智能材料

Abstract: In this work, poly(N-isopropylacrylamide)/SiO₂ nanocomposite hydrogel with high mechanical strength and thermo-responsiveness were successfully prepared through a facile and in-expensive methods of in-situ polymerization. The structure, mechanical properties, and thermo-dynamic performance of the resultant samples were analyzed and characterized using SEM, TEM, FT-IR, ASG-J electronic universal testing machine, and DSC.The results indicated that the nanocomposite hydrogel showed a well-defined and interconnected 3D porous network structure with the pore size of 1 μm, high compression mechanical strength(8 MPa)and excellent toughness, and a clear phase transition temperature of 35 ℃.

Key words: hydrogel, nanocomposite materials, SiO₂, high strength, smart materials

中图分类号:

Q938.8

周莉莉,刘艳霞,刘乐,冯献起. 聚N-异丙基丙烯酰胺/SiO₂纳米复合水凝胶的制备及性能[J]. 河北大学学报(自然科学版), 2018, 38(5): 496-502.

ZHOU Lili, LIU Yanxia, LIU Le, FENG Xianqi. Fabrication and characterization of poly(N-isopropylacrylamide) /SiO₂ nanocomposite hydrogels[J]. Journal of Hebei University (Natural Science Edition), 2018, 38(5): 496-502.

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聚N-异丙基丙烯酰胺/SiO₂纳米复合水凝胶的制备及性能

Fabrication and characterization of poly(N-isopropylacrylamide) /SiO₂ nanocomposite hydrogels

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