Cenospheres-Reinforced PA-12 Composite: Preparation, Physicochemical Properties, and Soaking Tests

Polymers

Magdalena Antonowicz¹  Marcin Lemanowicz²  Andrzej S. Swinarew³  Damian S. Nakonieczny⁴  Thomas Heim⁴  Paweł Nuckowski⁵  Krzysztof Matus⁵ 

[1] Department of Biomedical Engineering, Silesian University of Technology, Akademicka 2A, 44-100 Gliwice, Poland;Faculty of Chemistry, Department of Chemical Engineering and Process Design, Silesian University of Technology, Akademicka 2A, 44-100 Gliwice, Poland;Faculty of Science and Technology, University of Silesia in Katowice, 41-500 Chorzów, Poland;Institute for Manufacturing Technologies of Ceramic Components and Composites, University of Stuttgart, 70569 Stuttgart, Germany;Materials Research Laboratory, Faculty of Mechanical Engineering, Silesian University of Technology, Konarskiego 18 A, 44-100 Gliwice, Poland;

关键词: polyamide PA-12;    cenospheres;    composites;    surface modification;    Piranha solution;    APTES;   

DOI  :  10.3390/polym14122332

来源: DOAJ

【 摘 要 】

The main aim of this research was the preparation of a polymer–ceramic composite with PA-12 as the polymer matrix and modified aluminosilicate cenospheres (CSs) as the ceramic filler. The CSs were subjected to an early purification and cleaning process, which was also taken as a second objective. The CSs were surface modified by a two-step process: (1) etching in Piranha solution and (2) silanization in 3-aminopropyltriethoxysilane. The composite was made for 3D printing by FDM. Raw and modified CSs and a composite with PA-12 were subjected to the following tests: surface development including pores (BET), real density (HP), chemical composition and morphology (SEM/EDS, FTIR), grain analysis (PSD), phase composition (XRD), hardness (HV), and static tensile tests. The composites were subjected to soaking under simulated body fluid (SBF) conditions in artificial saliva for 14, 21, and 29 days. Compared to pure PA-12, PA-12_CS had generally better mechanical properties and was more resistant to SBF at elevated temperatures and soaking times. These results showed this material has potential for use in biomedical applications. These results also showed the necessity of developing a kinetic aging model for aging in different liquids to verify the true value of this material.

【 授权许可】

Unknown