Evaluation of Mechanical and Biological Properties of Akermanite/poly-ether-ether- Ketone Composite Fabricated by High- Temperature Laser Powder Bed Fusion

Overview

Journal Int J Bioprint

Specialty Biomedical Engineering

Date 2023 Jun 5

PMID 37273982

Authors

Zhiyuan Chen

Haoze Wang

Jin Su

Zixing Shu

Jiayi Hou

Peng Chen

Zhaoqing Li

Chunze Yan

Yusheng Shi

Affiliations

Soon will be listed here.

Abstract

High-temperature laser bed powder fusion (HT-LPBF) technology is an ideal method for processing poly-ether-ether-ketone (PEEK) implants with personalized bionic structures, but the biological inertia of PEEK limits its medical applications. In this study, we evaluated the mechanical and biological properties of a novel akermanite (AKM)/PEEK composite for HT-LPBF. The results showed that tiny AKM particles are evenly attached to the surface of the PEEK particle. The delayed peak crystallization temperature and stable sintering window ensure the processing feasibility of the AKM/PEEK composites. The tensile strength and Young's modulus are in the range of 30.83-98.73 MPa and 2.27-3.71 GPa, respectively, which can match the properties of cancellous bones and meet their implanting requirement. The CCK-8 experiments demonstrated the biocompatibility of the composites and the good proliferation of bone marrow stromal cells. The dense hydroxyapatite network layer and petal-like hydroxyapatite demonstrates biological activity, indicating that the composite has a good potential in the orthopedics fields.

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