Comparison of mechanical properties for polyamide 12 composite-based biomaterials fabricated by fused filament fabrication and injection molding

The emergence of 3D printing technology known as fused filament fabrication (FFF) has offered the possibility of producing an anatomically accurate, patient specific implant with more affordable prices. The only weakness of this technology is related to incompatibility and lack of properties of curr...

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Bibliographic Details
Main Authors: Rahim, Tuan Noraihan Azila Tuan, Abdullah, Abdul Manaf, Akil, Hazizan Md, Mohamad, Dasmawati
Format: Conference Proceeding
Language:English
Subjects:
Bioceramics
Biocompatibility
Biomedical materials
Cell adhesion
Cell adhesion & migration
Fillers
Fused deposition modeling
Hydroxyapatite
Incompatibility
Injection molding
Mechanical properties
Polyamide resins
Polyethylenes
Polymer matrix composites
Surface roughness
Surgical implants
Three dimensional printing
Zirconium dioxide
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Summary:The emergence of 3D printing technology known as fused filament fabrication (FFF) has offered the possibility of producing an anatomically accurate, patient specific implant with more affordable prices. The only weakness of this technology is related to incompatibility and lack of properties of current material to be applied in biomedical. Therefore, this study aims to develop a new, polymer composite-based biomaterial that exhibits a high processability using FFF technique, strong enough and shows acceptable biocompatibility, and safe for biomedical use. Polyamide 12 (PA12), which meets all these requirements was incorporated with two bioceramic fillers, zirconia and hydroxyapatite in order to improve the mechanical and bioactivity properties. The obtained mechanical properties were compared with injection-molded specimens and also a commercial biomedical product, HAPEXTM which is composed of hydroxyapatite and polyethylene. The yield strength and modulus of the PA12 composites increased steadily with increasing filler loading. Although the strength of printed PA12 composites were reduced compared with injection molded specimen, but still higher than HAPEXTM material. The higher surface roughness obtained by printed PA12 was expected to enhance the cell adhesion and provide better implant fixation.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4968862