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Mechanical, Rheological and Thermal Investigations of Biocompatible Feedstock Filament Comprising of PVC, PP and HAp

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In the present work, mechanical, rheological and thermal investigations for biocompatible feedstock filament wire (comprising of polyvinyl chloride and polypropylene and hydroxyapatite particles) have been conducted. The feedstock filament wire has been prepared (in-house) by twin-screw extrusion for commercial fused deposition modeling. This study also highlights the combined optimization of various mechanical properties (like peak load, break load, Young’s modulus and shore hardness) of the feedstock filament. The results have been supported by thermal analysis based upon differential scanning calorimetry, composite material morphology based upon scanning electron microscope analysis and rheological analysis based upon melt flow index.

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Twin-screw extrusion


Fused deposition modeling




Polyvinyl chloride



S/N ratio:

Signal-to-noise ratio


Scanning electron microscope


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The authors are thankful to Manufacturing Research Lab (Production Engineering Department, GNDEC Ludhiana), SERB, Department of Science, and Technology (India) for financial support under extramural research scheme, F. No. EMR/2014/001209, Institution of Engineers (India), F. No. R.6/2/DR/2017-18/RDDR2017010.

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Correspondence to Rupinder Singh.

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Ranjan, N., Singh, R. & Ahuja, I.P.S. Mechanical, Rheological and Thermal Investigations of Biocompatible Feedstock Filament Comprising of PVC, PP and HAp. Proc. Natl. Acad. Sci., India, Sect. A Phys. Sci. (2020). https://doi.org/10.1007/s40010-020-00664-2

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  • Twin-screw extruder
  • Feed stoke filament
  • HAp
  • PP
  • PVC
  • Melt flow index
  • Mechanical properties