期刊
JOURNAL OF APPLIED POLYMER SCIENCE
卷 139, 期 4, 页码 -出版社
WILEY
DOI: 10.1002/app.51563
关键词
biomaterials; biosynthesis of polymers; differential scanning calorimetry; friction; wear and lubrication
资金
- National Key Research and Development Program of China [2019YFB1707205]
- Xi'an Key Laboratory of Modern Intelligent Textile Equipment [2019220614SYS021CG043]
A PVA/PEG double-network composite hydrogel was developed with superior frictional-wear performance, showing potential as a candidate material for artificial cartilage repair.
Polyvinyl alcohol (PVA) hydrogel is considered the most promising candidate for artificial cartilage because of its good lubricity and low permeability. However, the efficacy of single-network PVA hydrogels under variable loads has not yet been determined. In this study, a one-step physical-cross-linking method was used to compose PVA/PEG double-network composite hydrogels. We changed the polyethylene glycol (PEG) content of the composite gel and tested the frictional-wear performance under different loads and speeds. With the mass fraction of PEG at 30 wt.%, the hardness of the PVA/PEG composite gel increased to 167.7% that of pure PVA. Under dry-friction conditions, the average coefficient of friction was approximately 0.14 and the wear rate on the surface of the hydrogel was insignificant. The cross-linking between PVA and PEG greatly enhanced the stability of the composite hydrogel polymer network. The structure of the composite gel was analyzed by a variety of standard methods. The hydrogel has excellent biocompatibility and self-healing ability and is a self-lubricating, self-healing candidate material for articular-cartilage repair.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据