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Thermal And Rheological Properties Of 3D Printed Polylactic Acid Plasticized With Polyethylene Glycol

In this work thermal, rheological and morphological properties of Polylactic acid (PLA) with 10 wt% polyethylene glycol (PEG) after melt blended at two different temperatures were investigated. The properties were compared with neat PLA and commercial PLA filament used for 3D printing. PLA/10 wt% PE...

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Main Author: Nor Ashikin, Nor Fazreeniza
Format: Monograph
Language:English
Published: Universiti Sains Malaysia 2018
Subjects:
T Technology
TN Mining Engineering. Metallurgy
Online Access:http://eprints.usm.my/53298/1/Thermal%20And%20Rheological%20Properties%20Of%203D%20Printed%20Polylactic%20Acid%20Plasticized%20With%20Polyethylene%20Glycol_Nor%20Fazreeniza%20Nor%20Ashikin_B1_2018.pdf
http://eprints.usm.my/53298/
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spelling my.usm.eprints.53298 http://eprints.usm.my/53298/ Thermal And Rheological Properties Of 3D Printed Polylactic Acid Plasticized With Polyethylene Glycol Nor Ashikin, Nor Fazreeniza T Technology TN Mining Engineering. Metallurgy In this work thermal, rheological and morphological properties of Polylactic acid (PLA) with 10 wt% polyethylene glycol (PEG) after melt blended at two different temperatures were investigated. The properties were compared with neat PLA and commercial PLA filament used for 3D printing. PLA/10 wt% PEG blend was prepared using single screw extruder to produce pellet for hot press or filament for 3D printing. The different of processing equipment affect thermal properties differently in which for hot pressed blends indicated insignificant changes of melting temperature (Tm) and crystallization temperature (Tc) while 3D printed blends showed reduction of glass transition temperature (Tg) and Tm in the presence of plasticizer. This study also suggested that the commercial PLA filament has higher crystallinity than the pure PLA used. The melt flow index of the PLA increased suggesting reduction of viscosity with 10w*% PEG or increase of temperature. Rheological properties indicated that storage modulus (G‟), loss modulus (G”) and complex viscosity (η*) decreased in the presence of plasticizer but the η* increased after 3D printing process might be due to layer by layer formation at different directions. Morphology shows that the plasticized PLA becomes more ductile with the addition of PEG. In addition, the layers in 3D printed sample prepared at 190°C were wetted well than samples at 170°C suggesting that 190°C is suitable processing temperature for the plasticized PLA. The water absorption test showed higher percentage of water absorption as PEG was added and for 3D printed samples compared with hot pressed sample. Universiti Sains Malaysia 2018-06-25 Monograph NonPeerReviewed application/pdf en http://eprints.usm.my/53298/1/Thermal%20And%20Rheological%20Properties%20Of%203D%20Printed%20Polylactic%20Acid%20Plasticized%20With%20Polyethylene%20Glycol_Nor%20Fazreeniza%20Nor%20Ashikin_B1_2018.pdf Nor Ashikin, Nor Fazreeniza (2018) Thermal And Rheological Properties Of 3D Printed Polylactic Acid Plasticized With Polyethylene Glycol. Project Report. Universiti Sains Malaysia, Pusat Pengajian Kejuruteraan Bahan dan Sumber Mineral. (Submitted)
institution Universiti Sains Malaysia
building Hamzah Sendut Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Sains Malaysia
content_source USM Institutional Repository
url_provider http://eprints.usm.my/
language English
topic T Technology
TN Mining Engineering. Metallurgy
spellingShingle T Technology
TN Mining Engineering. Metallurgy
Nor Ashikin, Nor Fazreeniza
Thermal And Rheological Properties Of 3D Printed Polylactic Acid Plasticized With Polyethylene Glycol
description In this work thermal, rheological and morphological properties of Polylactic acid (PLA) with 10 wt% polyethylene glycol (PEG) after melt blended at two different temperatures were investigated. The properties were compared with neat PLA and commercial PLA filament used for 3D printing. PLA/10 wt% PEG blend was prepared using single screw extruder to produce pellet for hot press or filament for 3D printing. The different of processing equipment affect thermal properties differently in which for hot pressed blends indicated insignificant changes of melting temperature (Tm) and crystallization temperature (Tc) while 3D printed blends showed reduction of glass transition temperature (Tg) and Tm in the presence of plasticizer. This study also suggested that the commercial PLA filament has higher crystallinity than the pure PLA used. The melt flow index of the PLA increased suggesting reduction of viscosity with 10w*% PEG or increase of temperature. Rheological properties indicated that storage modulus (G‟), loss modulus (G”) and complex viscosity (η*) decreased in the presence of plasticizer but the η* increased after 3D printing process might be due to layer by layer formation at different directions. Morphology shows that the plasticized PLA becomes more ductile with the addition of PEG. In addition, the layers in 3D printed sample prepared at 190°C were wetted well than samples at 170°C suggesting that 190°C is suitable processing temperature for the plasticized PLA. The water absorption test showed higher percentage of water absorption as PEG was added and for 3D printed samples compared with hot pressed sample.
format Monograph
author Nor Ashikin, Nor Fazreeniza
author_facet Nor Ashikin, Nor Fazreeniza
author_sort Nor Ashikin, Nor Fazreeniza
title Thermal And Rheological Properties Of 3D Printed Polylactic Acid Plasticized With Polyethylene Glycol
title_short Thermal And Rheological Properties Of 3D Printed Polylactic Acid Plasticized With Polyethylene Glycol
title_full Thermal And Rheological Properties Of 3D Printed Polylactic Acid Plasticized With Polyethylene Glycol
title_fullStr Thermal And Rheological Properties Of 3D Printed Polylactic Acid Plasticized With Polyethylene Glycol
title_full_unstemmed Thermal And Rheological Properties Of 3D Printed Polylactic Acid Plasticized With Polyethylene Glycol
title_sort thermal and rheological properties of 3d printed polylactic acid plasticized with polyethylene glycol
publisher Universiti Sains Malaysia
publishDate 2018
url http://eprints.usm.my/53298/1/Thermal%20And%20Rheological%20Properties%20Of%203D%20Printed%20Polylactic%20Acid%20Plasticized%20With%20Polyethylene%20Glycol_Nor%20Fazreeniza%20Nor%20Ashikin_B1_2018.pdf
http://eprints.usm.my/53298/
_version_ 1738511185431494656
score 13.211869

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