Characterization and development of polycaprolactone (PCL)/montmorillonite (MMT)/hydroxapaptite (HA) nano-composites for fused deposition modelling (FDM) process

In this study, characterization and development of polymer nanocomposites filament wire for Fused Deposition Modelling (FDM) was investigated. The polycaprolactone (PCL) filled montmorillonite (MMT) and Hydroxyapaptite (HA) composites were prepared by melting and compounding using a single screw...

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Main Author: Abdul Haq, Raezul Haq
Format: Thesis
Language:English
English
English
Published: 2015
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spelling my-uthm-ep.16162021-10-04T01:03:53Z Characterization and development of polycaprolactone (PCL)/montmorillonite (MMT)/hydroxapaptite (HA) nano-composites for fused deposition modelling (FDM) process 2015-06 Abdul Haq, Raezul Haq TS155-194 Production management. Operations management In this study, characterization and development of polymer nanocomposites filament wire for Fused Deposition Modelling (FDM) was investigated. The polycaprolactone (PCL) filled montmorillonite (MMT) and Hydroxyapaptite (HA) composites were prepared by melting and compounding using a single screw extruder. The mechanical properties were assessed by tensile, flexural and charpy impact tests while the thermal properties were studied via differential scanning calorimetry (DSC) and thermogravimetry analyzer (TGA). Simulated body fluid (SBF) test was used to assess the bioactivity properties of the composites. The filament wire with the diameter of 1.75+0.05 were fabricated using a single screw extruder with die hole 1.6 mm in diameter. Design of experiment (DOE) software was used to find the optimum setting for the screw speed, roller speed and die temperature in order to achieve the specific diameter of the filament wire. The flexural strength, elastic modulus and flexural modulus of PCL/MMT blends increased with the decrement of tensile strength and impact strength. Apparently, the inclusion of HA upon PCL/ MMT composite shows a slight improvement in elastic modulus, flexural modulus and flexural strength with reduction of impact strength. Addition of MMT and HA enhanced the thermal stability and the decomposition temperature of the composites. Formation of apatite crystals on the PCL/MMT/HA composites surfaces confirmed the occurrence of bioactive properties. Composites with 3 wt.% of MMT and 10 wt.% of HA were chosen as optimum composition in terms of strength and bioactive properties to be fabricated as filament wire for FDM process. The optimum parameter setting to produce 1.75+0.05 of filament wire was successfully found at screw speed of 7.30 Hz, roller speed of 4.3 rpm and die temperature of 90°C. The characteristic of the FDM process shows that the samples with optimum dimensional accuracy and relative density was found at room temperature and 80°C of platform and nozzle temperature respectively. The composites with 3 wt.% of MMT and 10 wt.% of HA samples produced from the FDM process show an improvement in elastic modulus and impact strength compared to samples prepared by injection molding process. 2015-06 Thesis http://eprints.uthm.edu.my/1616/ http://eprints.uthm.edu.my/1616/2/REAZUL%20HAQ%20ABDUL%20HAQ%20COPYRIGHT%20DECLARATION.pdf text en staffonly http://eprints.uthm.edu.my/1616/1/24p%20REAZUL%20HAQ%20ABDUL%20HAQ.pdf text en public http://eprints.uthm.edu.my/1616/3/REAZUL%20HAQ%20ABDUL%20HAQ%20WATERMARK.pdf text en validuser phd doctoral Universiti Tun Hussein Onn Malaysia Faculty of Mechanical and Manufacturing Engineering
institution Universiti Tun Hussein Onn Malaysia
collection UTHM Institutional Repository
language English
English
English
topic TS155-194 Production management
Operations management
spellingShingle TS155-194 Production management
Operations management
Abdul Haq, Raezul Haq
Characterization and development of polycaprolactone (PCL)/montmorillonite (MMT)/hydroxapaptite (HA) nano-composites for fused deposition modelling (FDM) process
description In this study, characterization and development of polymer nanocomposites filament wire for Fused Deposition Modelling (FDM) was investigated. The polycaprolactone (PCL) filled montmorillonite (MMT) and Hydroxyapaptite (HA) composites were prepared by melting and compounding using a single screw extruder. The mechanical properties were assessed by tensile, flexural and charpy impact tests while the thermal properties were studied via differential scanning calorimetry (DSC) and thermogravimetry analyzer (TGA). Simulated body fluid (SBF) test was used to assess the bioactivity properties of the composites. The filament wire with the diameter of 1.75+0.05 were fabricated using a single screw extruder with die hole 1.6 mm in diameter. Design of experiment (DOE) software was used to find the optimum setting for the screw speed, roller speed and die temperature in order to achieve the specific diameter of the filament wire. The flexural strength, elastic modulus and flexural modulus of PCL/MMT blends increased with the decrement of tensile strength and impact strength. Apparently, the inclusion of HA upon PCL/ MMT composite shows a slight improvement in elastic modulus, flexural modulus and flexural strength with reduction of impact strength. Addition of MMT and HA enhanced the thermal stability and the decomposition temperature of the composites. Formation of apatite crystals on the PCL/MMT/HA composites surfaces confirmed the occurrence of bioactive properties. Composites with 3 wt.% of MMT and 10 wt.% of HA were chosen as optimum composition in terms of strength and bioactive properties to be fabricated as filament wire for FDM process. The optimum parameter setting to produce 1.75+0.05 of filament wire was successfully found at screw speed of 7.30 Hz, roller speed of 4.3 rpm and die temperature of 90°C. The characteristic of the FDM process shows that the samples with optimum dimensional accuracy and relative density was found at room temperature and 80°C of platform and nozzle temperature respectively. The composites with 3 wt.% of MMT and 10 wt.% of HA samples produced from the FDM process show an improvement in elastic modulus and impact strength compared to samples prepared by injection molding process.
format Thesis
qualification_name Doctor of Philosophy (PhD.)
qualification_level Doctorate
author Abdul Haq, Raezul Haq
author_facet Abdul Haq, Raezul Haq
author_sort Abdul Haq, Raezul Haq
title Characterization and development of polycaprolactone (PCL)/montmorillonite (MMT)/hydroxapaptite (HA) nano-composites for fused deposition modelling (FDM) process
title_short Characterization and development of polycaprolactone (PCL)/montmorillonite (MMT)/hydroxapaptite (HA) nano-composites for fused deposition modelling (FDM) process
title_full Characterization and development of polycaprolactone (PCL)/montmorillonite (MMT)/hydroxapaptite (HA) nano-composites for fused deposition modelling (FDM) process
title_fullStr Characterization and development of polycaprolactone (PCL)/montmorillonite (MMT)/hydroxapaptite (HA) nano-composites for fused deposition modelling (FDM) process
title_full_unstemmed Characterization and development of polycaprolactone (PCL)/montmorillonite (MMT)/hydroxapaptite (HA) nano-composites for fused deposition modelling (FDM) process
title_sort characterization and development of polycaprolactone (pcl)/montmorillonite (mmt)/hydroxapaptite (ha) nano-composites for fused deposition modelling (fdm) process
granting_institution Universiti Tun Hussein Onn Malaysia
granting_department Faculty of Mechanical and Manufacturing Engineering
publishDate 2015
url http://eprints.uthm.edu.my/1616/2/REAZUL%20HAQ%20ABDUL%20HAQ%20COPYRIGHT%20DECLARATION.pdf
http://eprints.uthm.edu.my/1616/1/24p%20REAZUL%20HAQ%20ABDUL%20HAQ.pdf
http://eprints.uthm.edu.my/1616/3/REAZUL%20HAQ%20ABDUL%20HAQ%20WATERMARK.pdf
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