On printability of PLA-PEKK-HAp-CS based functional prototypes with FDM: thermo-mechanical investigations. (18th October 2019)

• Record Type: Journal Article
• Authors: Singh, Rupinder; Singh, Gurchetan; Singh, Jaskaran; Kumar, Ranvijay
• Is Part Of: Materials research express. Volume 6:Number 11(2019)
• Publication Date: 2019-10-18
• Subjects: PLA composite -- FDM -- functional prototype; Materials science -- Research -- Periodicals; Materials science -- Periodicals; 620.11
• DOI: 10.1088/2053-1591/ab4cb7
• Languages: English
• ISSNs: 2053-1591

Abstract

Abstract: This paper reports the printability and thermo-mechanical investigations of poly-lactic acid-polyether ketone-ketone- hydroxyapatite-chitosan (PLA-PEKK-HAp-CS) based functional prototypes printed with commercial fused deposition modelling (FDM) setup (without any alteration in software/hardware configuration). The in-house prepared feed stock filament comprising of PLA-PEKK-HAp-CS was used to print flexural samples as per ASTM D790. The samples prepared were investigated for flexural strength (on universal tensile testing (UTM) setup), thermal stability (on differential scanning calorimeter (DSC) setup) followed by morphological analysis (based upon metallurgical image analysis software for porosity evaluation as per ASTM B276). The results of study suggest that from flexural strength viewpoint for PLA-PEKK-HAp-CS based functional prototypes: infill density/percentage followed by infill speed is significant printing parameter. The predicted maximum flexural strength (26.3 MPa) and experimental results (26.17 MPa) are in line to each other and results are valid at 95% confidence level. The best settings of FDM printer from peak strength view point are 100% infill density/percentage, 50 mm s −1 infill speed and 4 no. of perimeters. Further in present case study it has been observed that samples prepared with low infill percentage posses better thermal stability and modulus of toughness as compared to samples prepared with high infill percentage.