Modelling of Extrusion Behaviour of Biopolymer and Composites in Fused Deposition Modelling

H.S. Ramanath; M. Chandrasekaran; Chee Kai Chua; Kah Fai Leong; Ketan D. Shah

doi:10.4028/www.scientific.net/KEM.334-335.1241

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Selective Laser Sintering of Tissue Engineering Scaffolds Using Poly(L-Lactide) Microspheres
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Fabrication and Characterisation of Polymer and Composite Scaffolds Based on Polyhydroxybutyrate and Polyhydroxybutyrate-Co-Hydroxyvalerate
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Effects of Processing Parameters on the Morphology and Size of Electrospun PHBV Micro- and Nano-Fibers
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Hydroxyapatite Nano-Particles Coating on the Pore Surface Within Poly(DL-lactic-co-glycolic acid) Scaffold
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Modelling of Extrusion Behaviour of Biopolymer and Composites in Fused Deposition Modelling
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Bioactive Composite Coating on Titanium Implants for Hard Tissue Repair
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Electrochemically-Induced Deposition of Protein and Calcium Phosphate Coating on Titanium
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HomeKey Engineering MaterialsKey Engineering Materials Vols. 334-335Modelling of Extrusion Behaviour of Biopolymer and...

Modelling of Extrusion Behaviour of Biopolymer and Composites in Fused Deposition Modelling

Abstract:

Processing of polymers plays an important role in application of polymers in biomedical engineering, for instance in manufacture of scaffolds for tissue engineering applications. Rapid prototyping technologies like fused deposition modeling (FDM) has been widely used in processing polymers for biomedical applications. The present work is focused on modeling of flow behavior in the extrusion liquefier in FDM. A finite element (FE) model of extrusion liquefier was constructed on ANSYS after verification of internal geometry using X-ray imaging. Polycaprolactone (PCL) is used as the base bio polymer for analysis. Experiments were carried out to characterize the physical properties like thermal conductivity, specific heat, viscosity and shear thinning property of PCL. These values were used for behavior modeling in the extrusion liquefier. The thermal and flow behavior in the extrusion liquefier is studied by varying input conditions and analyzing the velocity, pressure drop profiles at various zones of extrusion liquefier. Experimental values of parameters and the simulated flow model showed good correlation. The current model can be extended to predict the flow behavior of PCL/ Hydroxyapatite composites in a FDM head which in turn will reflect on the quality of scaffold constructed using the Biocomposite.

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Periodical:

Key Engineering Materials (Volumes 334-335)

Pages:

1241-1244

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.334-335.1241

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Online since:

March 2007

Authors:

H.S. Ramanath, M. Chandrasekaran, Chee Kai Chua, Kah Fai Leong, Ketan D. Shah

Keywords:

Extrusion Liquefier, Finite Difference Method (FDM), Rapid Prototyping (RP)

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References

[1] CK Chua, KF Leong, CS Lim, Rapid Prototyping, Principles and Applications, 2nd Edition, World Scientific Publishing Co. Pte Ltd, (2003).

Google Scholar

[2] A. Bellini: Fused Deposition of Ceramics: A Comprehensive experimental, Analytical and Computational Study of Material Behavior, Fabrication Process and Equipment Design,. PhD Thesis, Drexel University, USA. (2002).

DOI: 10.17918/etd-22

Google Scholar

[3] MP Grosvenor, JN Staniforth, Int. J. Pharmaceutics, 135 (1996) pp.103-109.

Google Scholar

[4] Walter Michaeli. Extrusion Dies: Design and Engineering Computations,. Hanser Publications, Munich (1984).

Google Scholar

[5] ANSYS Inc., ANSYS Element Reference Manual, USA (2004).

Google Scholar

[6] KY Jiang, YH Gu, Key Eng. Mater. Vols. 259 - 260 (2004) pp.667-671. Fig 7. Nozzle Angle versus Pressure Drop Fig. 8 Inlet Velocity versus Pressure Drop.

Google Scholar