Mechanical, thermal and characterization of chitosan, nano precipitated calcium carbonate single and hybrid filler/ poly (vinyl chloride) composites

The aim of this study is to investigate the mechanical, thermal and characterization of chitosan, nano precipitated calcium carbonate single and hybrid filler/ poly (vinyl chloride) (PVC) composites. Graft copolymerization of poly (methyl methacrylate) (PMMA) onto chitosan (CS) was carried out under...

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Main Author:	Abdul Aziz, Nur Azmyra
Format:	Thesis
Language:	English
Published:	2015
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/53967/1/NurAzmyraMFKChE2015.pdf
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spelling	my-utm-ep.539672020-10-08T05:09:52Z Mechanical, thermal and characterization of chitosan, nano precipitated calcium carbonate single and hybrid filler/ poly (vinyl chloride) composites 2015-06 Abdul Aziz, Nur Azmyra TP Chemical technology The aim of this study is to investigate the mechanical, thermal and characterization of chitosan, nano precipitated calcium carbonate single and hybrid filler/ poly (vinyl chloride) (PVC) composites. Graft copolymerization of poly (methyl methacrylate) (PMMA) onto chitosan (CS) was carried out under nitrogen atmosphere by free radical initiation in aqueous medium. Hydrogen peroxide (H2O2) and ferrous ions were used as a redox initiator/co-catalyst system. The PMMA homopolymer formed during the reaction was removed from the graft copolymer by extraction using acetone. The presence of PMMA functional groups in Fourier transform infra red (FTIR) spectra of grafted CS at peak 1731 cm-1 proved that the grafting process was successfully done. The single fillers (grafted CS, CS and nano-precipitated calcium carbonate (NPCC)) and hybrid fillers ((CS (2 phr)/NPCC (4 phr) and CS (4 phr)/NPCC (2 phr)) were pre-mixed with PVC using a high speed mixer. The dried blend formulations were milled into sheets using a two roll mill at temperature of 170 oC and then hot pressed at temperature of 175 oC. The tensile, flexural, impact strength and elongation at break of hybrid composites were increased compared to single fillers. Differences in surface morphology between the single composites and hybrid composites were observed. The hybrid PVC composites had better thermal stability than single composites. The increased of water resistance of the hybrid composites proved good filler-matrix interaction. Overall, the study showed that the hybrid PVC composites had good mechanical and thermal properties compared to the single filler PVC composites. PVC/CS (4 phr)/NPCC (2 phr) had reached a balanced properties in mechanical as well as thermal properties. 2015-06 Thesis http://eprints.utm.my/id/eprint/53967/ http://eprints.utm.my/id/eprint/53967/1/NurAzmyraMFKChE2015.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:85457 masters Universiti Teknologi Malaysia, Faculty of Chemical Engineering Faculty of Chemical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Abdul Aziz, Nur Azmyra Mechanical, thermal and characterization of chitosan, nano precipitated calcium carbonate single and hybrid filler/ poly (vinyl chloride) composites
description	The aim of this study is to investigate the mechanical, thermal and characterization of chitosan, nano precipitated calcium carbonate single and hybrid filler/ poly (vinyl chloride) (PVC) composites. Graft copolymerization of poly (methyl methacrylate) (PMMA) onto chitosan (CS) was carried out under nitrogen atmosphere by free radical initiation in aqueous medium. Hydrogen peroxide (H2O2) and ferrous ions were used as a redox initiator/co-catalyst system. The PMMA homopolymer formed during the reaction was removed from the graft copolymer by extraction using acetone. The presence of PMMA functional groups in Fourier transform infra red (FTIR) spectra of grafted CS at peak 1731 cm-1 proved that the grafting process was successfully done. The single fillers (grafted CS, CS and nano-precipitated calcium carbonate (NPCC)) and hybrid fillers ((CS (2 phr)/NPCC (4 phr) and CS (4 phr)/NPCC (2 phr)) were pre-mixed with PVC using a high speed mixer. The dried blend formulations were milled into sheets using a two roll mill at temperature of 170 oC and then hot pressed at temperature of 175 oC. The tensile, flexural, impact strength and elongation at break of hybrid composites were increased compared to single fillers. Differences in surface morphology between the single composites and hybrid composites were observed. The hybrid PVC composites had better thermal stability than single composites. The increased of water resistance of the hybrid composites proved good filler-matrix interaction. Overall, the study showed that the hybrid PVC composites had good mechanical and thermal properties compared to the single filler PVC composites. PVC/CS (4 phr)/NPCC (2 phr) had reached a balanced properties in mechanical as well as thermal properties.
format	Thesis
qualification_level	Master's degree
author	Abdul Aziz, Nur Azmyra
author_facet	Abdul Aziz, Nur Azmyra
author_sort	Abdul Aziz, Nur Azmyra
title	Mechanical, thermal and characterization of chitosan, nano precipitated calcium carbonate single and hybrid filler/ poly (vinyl chloride) composites
title_short	Mechanical, thermal and characterization of chitosan, nano precipitated calcium carbonate single and hybrid filler/ poly (vinyl chloride) composites
title_full	Mechanical, thermal and characterization of chitosan, nano precipitated calcium carbonate single and hybrid filler/ poly (vinyl chloride) composites
title_fullStr	Mechanical, thermal and characterization of chitosan, nano precipitated calcium carbonate single and hybrid filler/ poly (vinyl chloride) composites
title_full_unstemmed	Mechanical, thermal and characterization of chitosan, nano precipitated calcium carbonate single and hybrid filler/ poly (vinyl chloride) composites
title_sort	mechanical, thermal and characterization of chitosan, nano precipitated calcium carbonate single and hybrid filler/ poly (vinyl chloride) composites
granting_institution	Universiti Teknologi Malaysia, Faculty of Chemical Engineering
granting_department	Faculty of Chemical Engineering
publishDate	2015
url	http://eprints.utm.my/id/eprint/53967/1/NurAzmyraMFKChE2015.pdf
_version_	1747817663526076416

Mechanical, thermal and characterization of chitosan, nano precipitated calcium carbonate single and hybrid filler/ poly (vinyl chloride) composites

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