Cover Image

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...

Full description

Saved in:
Bibliographic Details
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
http://eprints.utm.my/id/eprint/53967/
http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:85457
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.utm.53967
record_format eprints
spelling my.utm.539672020-10-08T05:09:52Z http://eprints.utm.my/id/eprint/53967/ Mechanical, thermal and characterization of chitosan, nano precipitated calcium carbonate single and hybrid filler/ poly (vinyl chloride) composites 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 NonPeerReviewed application/pdf en http://eprints.utm.my/id/eprint/53967/1/NurAzmyraMFKChE2015.pdf Abdul Aziz, Nur Azmyra (2015) Mechanical, thermal and characterization of chitosan, nano precipitated calcium carbonate single and hybrid filler/ poly (vinyl chloride) composites. Masters thesis, Universiti Teknologi Malaysia, Faculty of Chemical Engineering. http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:85457
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
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
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
publishDate 2015
url http://eprints.utm.my/id/eprint/53967/1/NurAzmyraMFKChE2015.pdf
http://eprints.utm.my/id/eprint/53967/
http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:85457
_version_ 1681489453179207680
score 13.211869

Similar Items