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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| Format: | Proceeding Paper |
| Language: | English English |
| Published: |
EDP Sciences
2015
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| Online Access: | 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 |
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| 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 |
| building | IIUM Repository |
| collection | Online Access |
| 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 |
| first_indexed | 2025-11-14T16:25:34Z |
| format | Proceeding Paper |
| id | iium-50714 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-14T16:25:34Z |
| publishDate | 2015 |
| publisher | EDP Sciences |
| recordtype | eprints |
| repository_type | Digital Repository |
| 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 Proceeding Paper 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 |
| 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 |
| 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_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_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_sort | influence of molecular weight average, degree of crystallinity, and viscosity of different polyamide pa12 powder grades on the microstructures of laser sintered part |
| topic | T Technology (General) |
| 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 |