High strength graphene oxide/polyvinyl alcohol composite hydrogels

被引：387

作者：

Zhang, Lu ^{[1
]}

Wang, Zhipeng ^{[1
]}

Xu, Chen ^{[2
]}

Li, Yi ^{[1
]}

Gao, Jianping ^{[1
]}

Wang, Wei ^{[3
]}

Liu, Yu ^{[1
]}

机构：

[1] Tianjin Univ, Sch Sci, Tianjin 300072, Peoples R China

[2] Beijing 302 Hosp, Beijing 300060, Peoples R China

[3] Tianjin Univ, Sch Chem Engineer & Technol, Tianjin 300072, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2011年 / 21卷 / 28期

基金：

美国国家科学基金会;

关键词：

POLY(VINYL ALCOHOL); POLYVINYL-ALCOHOL; MECHANICAL-PROPERTIES; THAWING PROCESS; PVA HYDROGEL; THIN;

D O I：

10.1039/c0jm04043f

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Polyvinyl alcohol (PVA) hydrogels have been proposed for use as promising biomaterials in biomedical and tissue engineering but their poor mechanical and water-retention properties have hindered their development. Graphene oxide (GO), an excellent nanofiller, was added to PVA to make GO/PVA composite hydrogels by a freeze/thaw method. The mechanical properties of the GO/PVA hydrogels were significantly improved. Compared to pure PVA hydrogels, a 132% increase in tensile strength and a 36% improvement of compressive strength were achieved with the addition of 0.8 wt% of GO, which suggests an excellent load transfer between the GO and the PVA matrix. The incorporation of certain amount of GO into composite hydrogels does not affect the toxicity of PVA to osteoblast cells.

引用

页码：10399 / 10406

页数：8

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