Biodegradable behaviour of polylactic acid nanocomposite based on modified nanoclay

Polylactic acid (PLA) is a unique polymer. Eventually, this polymer has the broadest range of application especially in biomedical field due to its biocompatibility characteristics. The main purpose of this research is to study on the biodegradable properties of PLA based on modified organoclay. The...

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Main Author:	Norayuni, Azizi
Format:	Undergraduates Project Papers
Language:	English
Published:	2012
Subjects:	TP Chemical technology
Online Access:	http://umpir.ump.edu.my/id/eprint/3594/ http://umpir.ump.edu.my/id/eprint/3594/ http://umpir.ump.edu.my/id/eprint/3594/1/CD6419_NORAYUNI_AZIZI.pdf

id	ump-3594
recordtype	eprints
spelling	ump-35942015-03-03T08:02:04Z http://umpir.ump.edu.my/id/eprint/3594/ Biodegradable behaviour of polylactic acid nanocomposite based on modified nanoclay Norayuni, Azizi TP Chemical technology Polylactic acid (PLA) is a unique polymer. Eventually, this polymer has the broadest range of application especially in biomedical field due to its biocompatibility characteristics. The main purpose of this research is to study on the biodegradable properties of PLA based on modified organoclay. The properties of PLA nanocomposite will be improved by adding nanoclay or Montmorillonite (MMT) and produce PLA nanocomposite. The MMT that used in this research is bis-(2-hydroxyethyl) methyl tallow alkyl ammonium cations (Cloisite B30). A series of PLA nanocomposite was classified by different percentage of compositions and the samples were analysed and compared with pristine PLA. PLA nanocomposite was produced by melt intercalation method using twin screw extruder. Then, the compounds were injection molded by injection molding method and formed dumbbell shape. Meanwhile, PLA nanocomposite is characterized by Scanning Electron Microscopy (SEM) and X–Ray Diffraction Analysis (XRD). However, SEM captures could not determine the dispersion of Cloisite B30 precisely nevertheless it illustrates that aggregates were formed in the images. XRD result supported an exfoliation nanocomposite was possible demonstrated as no diffraction peak was appeared in the XRD results. It also shows that the inter-galleries spacing of the Cloisite B30 between PLA matrixes is too wide. Subsequently, the samples were tested using accelerated weathering tester for biodegradable analysis. Finally, the samples before and after exposed in the accelerated weathering tester were examined by mechanical testing to determine mechanical properties such as ultimate strain, elastic modulus and ultimate stress using tensile strength testing. The most desired result of this research is based on the biodegradable testing. After a year observation, only pristine PLA was sustained in strength while the PLA nanocomposite is so brittle. Meanwhile for a year and half observation, all the samples were so brittle. It can be concluded that the pristine PLA is still remain sustain after a year but it start to degrade after a year and half. The result obtained for before exposing under accelerated weathering tester, the pristine PLA possesses good properties for ultimate strain and ultimate stress rather than elasticity behaviour. 2012-01 Undergraduates Project Papers NonPeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/3594/1/CD6419_NORAYUNI_AZIZI.pdf Norayuni, Azizi (2012) Biodegradable behaviour of polylactic acid nanocomposite based on modified nanoclay. Faculty of Chemical Engineering and Natural Resources, Universiti Malaysia Pahang. http://iportal.ump.edu.my/lib/item?id=chamo:66530&theme=UMP2
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Norayuni, Azizi Biodegradable behaviour of polylactic acid nanocomposite based on modified nanoclay
description	Polylactic acid (PLA) is a unique polymer. Eventually, this polymer has the broadest range of application especially in biomedical field due to its biocompatibility characteristics. The main purpose of this research is to study on the biodegradable properties of PLA based on modified organoclay. The properties of PLA nanocomposite will be improved by adding nanoclay or Montmorillonite (MMT) and produce PLA nanocomposite. The MMT that used in this research is bis-(2-hydroxyethyl) methyl tallow alkyl ammonium cations (Cloisite B30). A series of PLA nanocomposite was classified by different percentage of compositions and the samples were analysed and compared with pristine PLA. PLA nanocomposite was produced by melt intercalation method using twin screw extruder. Then, the compounds were injection molded by injection molding method and formed dumbbell shape. Meanwhile, PLA nanocomposite is characterized by Scanning Electron Microscopy (SEM) and X–Ray Diffraction Analysis (XRD). However, SEM captures could not determine the dispersion of Cloisite B30 precisely nevertheless it illustrates that aggregates were formed in the images. XRD result supported an exfoliation nanocomposite was possible demonstrated as no diffraction peak was appeared in the XRD results. It also shows that the inter-galleries spacing of the Cloisite B30 between PLA matrixes is too wide. Subsequently, the samples were tested using accelerated weathering tester for biodegradable analysis. Finally, the samples before and after exposed in the accelerated weathering tester were examined by mechanical testing to determine mechanical properties such as ultimate strain, elastic modulus and ultimate stress using tensile strength testing. The most desired result of this research is based on the biodegradable testing. After a year observation, only pristine PLA was sustained in strength while the PLA nanocomposite is so brittle. Meanwhile for a year and half observation, all the samples were so brittle. It can be concluded that the pristine PLA is still remain sustain after a year but it start to degrade after a year and half. The result obtained for before exposing under accelerated weathering tester, the pristine PLA possesses good properties for ultimate strain and ultimate stress rather than elasticity behaviour.
format	Undergraduates Project Papers
author	Norayuni, Azizi
author_facet	Norayuni, Azizi
author_sort	Norayuni, Azizi
title	Biodegradable behaviour of polylactic acid nanocomposite based on modified nanoclay
title_short	Biodegradable behaviour of polylactic acid nanocomposite based on modified nanoclay
title_full	Biodegradable behaviour of polylactic acid nanocomposite based on modified nanoclay
title_fullStr	Biodegradable behaviour of polylactic acid nanocomposite based on modified nanoclay
title_full_unstemmed	Biodegradable behaviour of polylactic acid nanocomposite based on modified nanoclay
title_sort	biodegradable behaviour of polylactic acid nanocomposite based on modified nanoclay
publishDate	2012
url	http://umpir.ump.edu.my/id/eprint/3594/ http://umpir.ump.edu.my/id/eprint/3594/ http://umpir.ump.edu.my/id/eprint/3594/1/CD6419_NORAYUNI_AZIZI.pdf
first_indexed	2023-09-18T21:57:58Z
last_indexed	2023-09-18T21:57:58Z
_version_	1777414207082332160

Biodegradable behaviour of polylactic acid nanocomposite based on modified nanoclay

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