Synthesis and Characterization of High Strength and Temperature-Sensitive PINPA/SiO2 Nanocomposite Hydrogels with Shape Memory Behavior

被引：0

作者：

Xu B. ^{[1
]}

Li P. ^{[1
]}

Li H. ^{[2
]}

Wang L. ^{[1
]}

机构：

[1] Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi

[2] School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing

来源：

Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2018年 / 34卷 / 06期

关键词：

High strength; Nanocomposite hydrogel; Poly (N-isopropylacrylamide); Shape memory; Temperature-sensitive;

D O I：

10.16865/j.cnki.1000-7555.2018.06.024

中图分类号：

学科分类号：

摘要：

In this study, 3-methacryloxypropyltrimethoxysilane (MPS) was used to modify the surface of SiO2 nanoparticles (SNPs) in order to obtain the vinyl-contained functionalized SNPs (F-SNPs). High strength poly (N-isopropylacrylamide) (PNIPA)/SiO2 nanocomposite hydrogel (FS-NC gel) was prepared by in situ free radical polymerization of N-isopropyl acrylamide in the aqueous dispersion of F-SNPs. The results obtained from mechanical tests and swelling measurements indicate that the FS-NC gel displays significantly improved mechanical properties (the tensile and compressive strength of FS-NC gels are up to 205 kPa and 7.8 MPa, respectively) compared to hydrogels cross-linked with organic cross-linker or unmodified SNPs, and maintains the fast response rate and temperature-sensitivity of PNIPA nanocomposite hydrogels. Furthermore, FS-NC gel also shows water-induced shape memory behavior. © 2018, Editorial Board of Polymer Materials Science & Engineering. All right reserved.

引用

页码：139 / 144

页数：5

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