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Modification of orientation birefringence of cellulose ester by addition of poly(lactic acid)

Effect of the addition of poly(lactic acid) (PLA) to cellulose acetate propionate (CAP) on the optical anisotropy is studied considering the morphology and molecular orientation. It is found that PLA is miscible with CAP when the amount of PLA is less than 3 wt.%. The dissolution of PLA chains havin...

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Main Author: Abd Manaf, Mohd Edeerozey
Format: Article
Language:English
Published: Elsevier 2010
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://eprints.utem.edu.my/id/eprint/7082/1/PLA.pdf
http://eprints.utem.edu.my/id/eprint/7082/
http://www.journals.elsevier.com/european-polymer-journal/
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spelling my.utem.eprints.70822022-02-14T14:46:36Z http://eprints.utem.edu.my/id/eprint/7082/ Modification of orientation birefringence of cellulose ester by addition of poly(lactic acid) Abd Manaf, Mohd Edeerozey TJ Mechanical engineering and machinery Effect of the addition of poly(lactic acid) (PLA) to cellulose acetate propionate (CAP) on the optical anisotropy is studied considering the morphology and molecular orientation. It is found that PLA is miscible with CAP when the amount of PLA is less than 3 wt.%. The dissolution of PLA chains having large intrinsic birefringence into CAP phase enhances the orientation birefringence of a stretched film, although the viscosity and thus the relaxation time of PLA is significantly shorter than those of CAP. The high level of orientation of PLA chains without relaxation is attained by the cooperative alignment with CAP chains. As a result, a retardation film having appropriate birefringence can be designed by polymer blends composed of biomass-based materials. When the amount of PLA is more than 3 wt.%, however, phase separation occurs. In the case of the blends with phase-separated morphology, the orientation birefringence is not greatly enhanced by blending PLA, because the molecular orientation of PLA in PLA phase relaxes immediately as compared with that of CAP. Elsevier 2010 Article PeerReviewed text en http://eprints.utem.edu.my/id/eprint/7082/1/PLA.pdf Abd Manaf, Mohd Edeerozey (2010) Modification of orientation birefringence of cellulose ester by addition of poly(lactic acid). European Polymer Journal, 46. pp. 2269-2274. ISSN 0014-3057 http://www.journals.elsevier.com/european-polymer-journal/
institution Universiti Teknikal Malaysia Melaka
building UTEM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknikal Malaysia Melaka
content_source UTEM Institutional Repository
url_provider http://eprints.utem.edu.my/
language English
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Abd Manaf, Mohd Edeerozey
Modification of orientation birefringence of cellulose ester by addition of poly(lactic acid)
description Effect of the addition of poly(lactic acid) (PLA) to cellulose acetate propionate (CAP) on the optical anisotropy is studied considering the morphology and molecular orientation. It is found that PLA is miscible with CAP when the amount of PLA is less than 3 wt.%. The dissolution of PLA chains having large intrinsic birefringence into CAP phase enhances the orientation birefringence of a stretched film, although the viscosity and thus the relaxation time of PLA is significantly shorter than those of CAP. The high level of orientation of PLA chains without relaxation is attained by the cooperative alignment with CAP chains. As a result, a retardation film having appropriate birefringence can be designed by polymer blends composed of biomass-based materials. When the amount of PLA is more than 3 wt.%, however, phase separation occurs. In the case of the blends with phase-separated morphology, the orientation birefringence is not greatly enhanced by blending PLA, because the molecular orientation of PLA in PLA phase relaxes immediately as compared with that of CAP.
format Article
author Abd Manaf, Mohd Edeerozey
author_facet Abd Manaf, Mohd Edeerozey
author_sort Abd Manaf, Mohd Edeerozey
title Modification of orientation birefringence of cellulose ester by addition of poly(lactic acid)
title_short Modification of orientation birefringence of cellulose ester by addition of poly(lactic acid)
title_full Modification of orientation birefringence of cellulose ester by addition of poly(lactic acid)
title_fullStr Modification of orientation birefringence of cellulose ester by addition of poly(lactic acid)
title_full_unstemmed Modification of orientation birefringence of cellulose ester by addition of poly(lactic acid)
title_sort modification of orientation birefringence of cellulose ester by addition of poly(lactic acid)
publisher Elsevier
publishDate 2010
url http://eprints.utem.edu.my/id/eprint/7082/1/PLA.pdf
http://eprints.utem.edu.my/id/eprint/7082/
http://www.journals.elsevier.com/european-polymer-journal/
_version_ 1725976109683572736
score 13.211869

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