Synthesis of PLA/MgAl2O4 Composite Using Slurry Casting Method: A Study on Biomaterial Properties

被引：0

作者：

Mehran Ghodrati ^{[1
]}

Seyed Mahdi Rafiaei ^{[1
]}

Lobat Tayebi ^{[2
]}

机构：

[1] Materials Engineering Group, Golpayegan College of Engineering, Isfahan University of Technology, Golpayegan

[2] School of Dentistry, Marquette University, Milwaukee, 53233, WI

来源：

Journal of Bio- and Tribo-Corrosion | 2025年 / 11卷 / 1期

关键词：

Degradability; MgAl[!sub]2[!/sub]O[!sub]4[!/sub; PLA; PLA\MgAl[!sub]2[!/sub]O[!sub]4[!/sub; Slurry casting; Spinel;

D O I：

10.1007/s40735-025-00953-6

中图分类号：

学科分类号：

摘要：

In this study, magnesium aluminate spinel (MgAl2O4) particles were synthesized at 500 °C using the combustion method followed by calcination at 800 °C. Subsequently, PLA (Polylactic acid)/MgAl2O4 scaffolds were fabricated and developed employing the slurry casting approach. In this research, 4 and 8 wt.% of magnesium aluminate spinel were used for composite production. To analyze the crystal structure, surface chemistry, microstructure, and biodegradability of the produced composites, X-ray diffraction analysis (XRD), Fourier transform infrared (FTIR), field scanning electron microscopy (FESEM), inductively coupled plasma (ICP), and potentiometric evaluations were employed. The Rietveld results of XRD data revealed that MgAl2O4 particles have been properly dispersed in the slurry casted specimens. FTIR characterization confirmed bonding formation between the MgAl2O4 reinforcement and the PLA matrix. FESEM/EDX results indicated that MgAl2O4 spinel, with the sub-micron-sized particles, significantly accelerated the degradation rate. As the ICP analysis confirmed the bioactivity of the PLA/MgAl2O4 composites by observing a meaningful reduction of Ca and P elements in simulated body fluid (SBF), it is hopefully concluded that the mentioned composites can be employed as effective biomaterials. Moreover, an increase in pH after 4 weeks indicated the degradation of composites. Meanwhile, the values of pH vary between 7.6 and 7.8, which is close to the pH of the human body. © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2025.

引用

共 37 条

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