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PA-12-氧化锆-氧化铝-空心微珠3D打印复合材料：加速老化及灭菌过程对其物理化学性质的影响

PA-12-Zirconia-Alumina-Cenospheres 3D Printed Composites: Accelerated Ageing and Role of the Sterilisation Process for Physicochemical Properties.

作者信息

Nakonieczny Damian S, Antonowicz Magdalena, SimhaMartynkova Gražyna, Kern Frank, Pazourková Lenka, Erfurt Karol, Hüpsch Michał

机构信息

Institute for Manufacturing Technologies of Ceramic Components and Composites, University of Stuttgart, 70569 Stuttgart, Germany.

Nanotechnology Centre, CEET, VŠB-Technical University of Ostrava, 17. Listopadu 15, 708733 Ostrava-Poruba, Czech Republic.

出版信息

Polymers (Basel). 2022 Aug 2;14(15):3152. doi: 10.3390/polym14153152.

DOI:10.3390/polym14153152
PMID:35956670
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9370858/
Abstract

The aim of this study was to conduct artificial ageing tests on polymer-ceramic composites prepared from polyamide PA-12 polymer matrix for medical applications and three different variants of ceramic fillers: zirconia, alumina and cenospheres. Before ageing, the samples were subjected to ethyl oxide sterilization. The composite variants were prepared for 3D printing using the fused deposition modeling method. The control group consisted of unsterilized samples. Samples were subjected to artificial ageing in a high-pressure autoclave. Ageing conditions were calculated from the modified Hammerlich Arrhenius kinetic equation. Ageing was carried out in artificial saliva. After ageing the composites were subjected to mechanical (tensile strength, hardness, surface roughness) testing, chemical and structural (MS, FTIR) analysis, electron microscopy observations (SEM/EDS) and absorbability measurements.

摘要

本研究的目的是对由聚酰胺PA - 12聚合物基体及三种不同变体的陶瓷填料（氧化锆、氧化铝和空心微珠）制备的用于医疗应用的聚合物 - 陶瓷复合材料进行人工老化试验。老化前，样品进行环氧乙烷灭菌。采用熔融沉积建模方法制备用于3D打印的复合材料变体。对照组由未灭菌的样品组成。样品在高压灭菌器中进行人工老化。老化条件根据修正的哈默利希 - 阿伦尼乌斯动力学方程计算得出。老化在人工唾液中进行。老化后，对复合材料进行机械性能（拉伸强度、硬度、表面粗糙度）测试、化学和结构（质谱、傅里叶变换红外光谱）分析、电子显微镜观察（扫描电子显微镜/能谱分析）以及吸收性测量。

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