A bioinspired hard-soft composites with strong interfacial bonding, high load-bearing and low friction for osteochondral repair

被引：2

作者：

Zhang, Lizhi ^{[1
,2
]}

Ren, Zhongkan ^{[3
,4
]}

Fang, Zhen ^{[3
,4
]}

Wang, Lujie ^{[1
,3
]}

Li, Tongyang ^{[1
,3
]}

Yu, Yuan ^{[1
,3
]}

Tang, Huaguo ^{[1
,2
,3
,4
]}

Qiao, Zhuhui ^{[1
,2
,3
,5
]}

Liu, Weimin ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China

[2] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100039, Peoples R China

[3] Shandong Lab Adv Mat & Green Manufacture Yantai, Yantai 264006, Peoples R China

[4] Yantai Zhongke Res Inst Adv Mat & Green Chem Engn, Yantai 264006, Peoples R China

[5] Qingdao Ctr Resource Chem & New Mat, Qingdao 266100, Peoples R China

来源：

TRIBOLOGY INTERNATIONAL | 2024年 / 200卷

基金：

中国国家自然科学基金;

关键词：

Porous Si 3 N 4 ceramic; PVA-CBA hydrogel; Strong interfacial bonding; High mechanical strength; Low friction; SCAFFOLDS;

D O I：

10.1016/j.triboint.2024.110031

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The development of osteochondral composites that simultaneously exhibit superior load-bearing performance and lubrication properties remains a significant challenge. In this investigation, a novel hard-soft composite material, which utilizes porous Si3N4 ceramics as a structural support and PVA-CBA (synthesis by condensation of polyvinyl alcohol and 4-formylbenzoic acid) hydrogels as a lubrication, was fabricated via impregnating the hydrogel into porous ceramics, namely Si3N4/PVA-CBA composites. It demonstrates strong interfacial bonding, comprising macro-micro scale mechanical interlocking and molecular scale chemical crosslinking. The developed material exhibits high mechanical strength ( 103.2 MPa and 1500 % larger than the corresponding value of porous Si3N4 ceramics), low friction and wear ( 0.21 under 10 N load and 10 Hz frequency), and favorable cell adhesion and proliferation. This provides an effective strategy for designing hard-soft composite material in the osteochondral repair field.

引用

页数：7

共 33 条

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