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Synthesis of Graphene-Hydroxyapatite Nanocomposites for Potential Use in Bone Tissue Engineering
Published on: July 27, 2022
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Graphene oxide as an interface phase between polyetheretherketone and hydroxyapatite for tissue engineering scaffolds
Shuping Peng1,2,3, Pei Feng4, Ping Wu5
1The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Xiangya Hospital, Central South University, 410008, China.
Scientific Reports
|April 21, 2017
Summary
Graphene oxide enhances bonding in polyetheretherketone-hydroxyapatite scaffolds for bone tissue engineering. These improved scaffolds promote new bone formation, showing great potential for clinical applications.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Materials Chemistry
Background:
- Poor interfacial bonding between biopolymers and bioceramics limits scaffold performance.
- Polyetheretherketone (PEEK) and hydroxyapatite (HAP) are promising materials for bone tissue engineering, but their integration is challenging.
Purpose of the Study:
- To enhance the interfacial bonding between PEEK and HAP using graphene oxide (GO) as an interface phase.
- To evaluate the mechanical, biological, and in vivo bone repair properties of the modified scaffolds.
Main Methods:
- Graphene oxide (GO) was incorporated as an interface phase between PEEK and HAP.
- The dispersibility, mechanical properties (compressive strength and modulus), apatite formation, and cellular responses of the scaffolds were assessed.
- In vivo studies were conducted to evaluate bone defect repair in implanted scaffolds.
Main Results:
- Graphene oxide improved the dispersibility and compatibility of HAP within the PEEK matrix.
- Scaffold compressive strength and modulus increased by 79.45% and 42.07%, respectively, with optimal GO content.
- The PEEK-HAP/GO scaffolds induced bone-like apatite formation, supported cell growth, and promoted osteogenic differentiation.
- In vivo experiments demonstrated significant new bone formation within the scaffolds after 60 days.
Conclusions:
- Graphene oxide effectively enhances the interfacial bonding and mechanical properties of PEEK-HAP composite scaffolds.
- The developed PEEK-HAP/GO scaffolds exhibit excellent biocompatibility and osteoinductivity.
- These scaffolds show significant potential for successful application in bone tissue engineering and regeneration.
