Super tough graphene oxide reinforced polyetheretherketone for potential hard tissue repair applications 机翻标题: 暂无翻译,请尝试点击翻译按钮。

来源
Composites science and technology
年/卷/期
2019 / 174 / Apr.12
页码
194-201
ISSN号
0266-3538
作者单位
Sichuan Univ, State Key Lab Oral Dis, Sch Mat Sci & Engn, Analyt & Testing Ctr, Chengdu 610065, Sichuan, Peoples R China|Sichuan Univ, West China Hosp Stomatol, Chengdu 610065, Sichuan, Peoples R China;Sichuan Univ, State Key Lab Oral Dis, Sch Mat Sci & Engn, Analyt & Testing Ctr, Chengdu 610065, Sichuan, Peoples R China|Sichuan Univ, West China Hosp Stomatol, Chengdu 610065, Sichuan, Peoples R China;Sichuan Univ, State Key Lab Oral Dis, Sch Mat Sci & Engn, Analyt & Testing Ctr, Chengdu 610065, Sichuan, Peoples R China|Sichuan Univ, West China Hosp Stomatol, Chengdu 610065, Sichuan, Peoples R China;Sichuan Univ, State Key Lab Oral Dis, Sch Mat Sci & Engn, Analyt & Testing Ctr, Chengdu 610065, Sichuan, Peoples R China|Sichuan Univ, West China Hosp Stomatol, Chengdu 610065, Sichuan, Peoples R China;Sichuan Univ, State Key Lab Oral Dis, Sch Mat Sci & Engn, Analyt & Testing Ctr, Chengdu 610065, Sichuan, Peoples R China|Sichuan Univ, West China Hosp Stomatol, Chengdu 610065, Sichuan, Peoples R China;Sichuan Univ, State Key Lab Oral Dis, Sch Mat Sci & Engn, Analyt & Testing Ctr, Chengdu 610065, Sichuan, Peoples R China|Sichuan Univ, West China Hosp Stomatol, Chengdu 610065, Sichuan, Peoples R China;Sichuan Univ, State Key Lab Oral Dis, Sch Mat Sci & Engn, Analyt & Testing Ctr, Chengdu 610065, Sichuan, Peoples R China|Sichuan Univ, West China Hosp Stomatol, Chengdu 610065, Sichuan, Peoples R China;Sichuan Univ, State Key Lab Oral Dis, Sch Mat Sci & Engn, Analyt & Testing Ctr, Chengdu 610065, Sichuan, Peoples R China|Sichuan Univ, West China Hosp Stomatol, Chengdu 610065, Sichuan, Peoples R China;Queens Univ Belfast, Sch Mech & Aerosp Engn, Adv Composite Res Grp, Belfast BT9 5AH, Antrim, North Ireland;Queens Univ Belfast, Sch Mech & Aerosp Engn, Adv Composite Res Grp, Belfast BT9 5AH, Antrim, North Ireland;
作者
He, Miaomiao;Chen, Xianchun;Guo, Zhijun;Qiu, Xiaotao;Yang, Yutao;Su, Chengli;Jiang, Nan;Li, Yubao;Sun, Dan;Zhang, Li;
摘要
Biocompatible polyetheretherketone (PEEK) is a favorable material for hard tissue repair due to its similar elastic modulus to that of the human bone. In this work, graphene oxide (GO) reinforced PEEK nanocomposites with different GO loading have been prepared by injection molding. Mechanical testing reveals that the toughness of the reinforced composite varies with the GO loading, with 0.5% GO giving the greatest elongation at break (86.32% greater than pristine PEEK). The underlying toughening mechanism has been attributed to the well dispersed GO forming pi-pi* conjugations at the GO/PEEK interface. These conjugations also acted as the nucleation sites for oriented crystallized region in PEEK. As the GO content increases further (e.g > 0.5%), the fillers tend to agglomerate and would disturb the crystallites of PEEK and serve as stress concentration sites, resulting in decreased toughness. The biocompatibility of the composites has been evaluated in vitro, and the results showed that the addition of GO into PEEK favors the adhesion and spreading of bone marrow stromal stem cells, demonstrating the strong potential of our GO reinforced PEEK composites in applications such as hard tissue repair and replacement.
机翻摘要
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关键词/主题词
Polyetheretherketone (PEEK);Graphene oxide;pi-pi* conjugation;Toughness;
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