Influence of molecular weight average, degree of crystallinity, and viscosity of different polyamide PA12 powder grades on the microstructures of laser sintered part

Laser Sintering (LS) allows functional parts to be produced in a wide range of powdered materials using a dedicated machine, and is thus gaining popularity within the field of rapid prototyping. It offers the user the ability to optimise part design in order to meet customer requirements with few ma...

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Main Authors:	Wan Yusoff, Wan Ahmad Yusmawiza, Ani, Mohd Hanafi, Pham, DT, Dotchev, K.
Format:	Conference or Workshop Item
Language:	English English
Published:	EDP Sciences 2015
Subjects:	T Technology (General)
Online Access:	http://irep.iium.edu.my/50714/ http://irep.iium.edu.my/50714/ http://irep.iium.edu.my/50714/ http://irep.iium.edu.my/50714/1/50714.pdf http://irep.iium.edu.my/50714/4/50714_Influence%20of%20molecular%20weight%20average_Scopus.pdf

id	iium-50714
recordtype	eprints
spelling	iium-507142017-05-04T01:55:26Z http://irep.iium.edu.my/50714/ Influence of molecular weight average, degree of crystallinity, and viscosity of different polyamide PA12 powder grades on the microstructures of laser sintered part Wan Yusoff, Wan Ahmad Yusmawiza Ani, Mohd Hanafi Pham, DT Dotchev, K. T Technology (General) Laser Sintering (LS) allows functional parts to be produced in a wide range of powdered materials using a dedicated machine, and is thus gaining popularity within the field of rapid prototyping. It offers the user the ability to optimise part design in order to meet customer requirements with few manufacturing restrictions. A problem with LS is that sometimes the surface of the parts produced displays a texture similar to that of the skin of an orange (the socalled “orange peel” (texture). The main aim of this research is to develop a methodology of controlling the input material properties of PA12 powder that will ensure consistent and good quality of the fabricated parts. Melt Flow Rate (MFR) and Gel permeation chromatography (GPC) were employed to measure the flow viscosity and molecular weight distributions of Polyamide PA12 powder grades. The experimental results proved that recycle PA12 powder with higher melt viscosity polymer has a higher entanglement with a longer molecule chain causes a higher resistance to flow which cause poor and rough surface finished on laser sintered part EDP Sciences 2015-10-12 Conference or Workshop Item PeerReviewed application/pdf en http://irep.iium.edu.my/50714/1/50714.pdf application/pdf en http://irep.iium.edu.my/50714/4/50714_Influence%20of%20molecular%20weight%20average_Scopus.pdf Wan Yusoff, Wan Ahmad Yusmawiza and Ani, Mohd Hanafi and Pham, DT and Dotchev, K. (2015) Influence of molecular weight average, degree of crystallinity, and viscosity of different polyamide PA12 powder grades on the microstructures of laser sintered part. In: 2015 3rd Asia Conference on Mechanical and Materials Engineering (ACMME 2015), 23rd-24th July 2015, Chengdu, Sichuan, China. http://www.matec-conferences.org/articles/matecconf/pdf/2015/07/matecconf_acmme2015_03005.pdf 10.1051/matecconf/20152603005
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English
topic	T Technology (General)
spellingShingle	T Technology (General) Wan Yusoff, Wan Ahmad Yusmawiza Ani, Mohd Hanafi Pham, DT Dotchev, K. Influence of molecular weight average, degree of crystallinity, and viscosity of different polyamide PA12 powder grades on the microstructures of laser sintered part
description	Laser Sintering (LS) allows functional parts to be produced in a wide range of powdered materials using a dedicated machine, and is thus gaining popularity within the field of rapid prototyping. It offers the user the ability to optimise part design in order to meet customer requirements with few manufacturing restrictions. A problem with LS is that sometimes the surface of the parts produced displays a texture similar to that of the skin of an orange (the socalled “orange peel” (texture). The main aim of this research is to develop a methodology of controlling the input material properties of PA12 powder that will ensure consistent and good quality of the fabricated parts. Melt Flow Rate (MFR) and Gel permeation chromatography (GPC) were employed to measure the flow viscosity and molecular weight distributions of Polyamide PA12 powder grades. The experimental results proved that recycle PA12 powder with higher melt viscosity polymer has a higher entanglement with a longer molecule chain causes a higher resistance to flow which cause poor and rough surface finished on laser sintered part
format	Conference or Workshop Item
author	Wan Yusoff, Wan Ahmad Yusmawiza Ani, Mohd Hanafi Pham, DT Dotchev, K.
author_facet	Wan Yusoff, Wan Ahmad Yusmawiza Ani, Mohd Hanafi Pham, DT Dotchev, K.
author_sort	Wan Yusoff, Wan Ahmad Yusmawiza
title	Influence of molecular weight average, degree of crystallinity, and viscosity of different polyamide PA12 powder grades on the microstructures of laser sintered part
title_short	Influence of molecular weight average, degree of crystallinity, and viscosity of different polyamide PA12 powder grades on the microstructures of laser sintered part
title_full	Influence of molecular weight average, degree of crystallinity, and viscosity of different polyamide PA12 powder grades on the microstructures of laser sintered part
title_fullStr	Influence of molecular weight average, degree of crystallinity, and viscosity of different polyamide PA12 powder grades on the microstructures of laser sintered part
title_full_unstemmed	Influence of molecular weight average, degree of crystallinity, and viscosity of different polyamide PA12 powder grades on the microstructures of laser sintered part
title_sort	influence of molecular weight average, degree of crystallinity, and viscosity of different polyamide pa12 powder grades on the microstructures of laser sintered part
publisher	EDP Sciences
publishDate	2015
url	http://irep.iium.edu.my/50714/ http://irep.iium.edu.my/50714/ http://irep.iium.edu.my/50714/ http://irep.iium.edu.my/50714/1/50714.pdf http://irep.iium.edu.my/50714/4/50714_Influence%20of%20molecular%20weight%20average_Scopus.pdf
first_indexed	2023-09-18T21:11:43Z
last_indexed	2023-09-18T21:11:43Z
_version_	1777411296794247168

Influence of molecular weight average, degree of crystallinity, and viscosity of different polyamide PA12 powder grades on the microstructures of laser sintered part

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