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Mechanical, thermal and surface investigations of chitosan/agar/PVA Ternary blended films

The mechanical and thermal properties of chitosan/agar/poly vinyl alcohol (CS/AG/PVA) ternary blended films having various proportions considering chitosan as the main component were investigated. The various variables static water contact angle such as contact angle, drop base area, drop volume and...

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Main Authors: El-Hefian, Esam A., Nasef, Mohamed Mahmoud, Yahaya, Abdul Hamid
Format: Article
Published: W W W Publications (P) India 2011
Subjects:
QD Chemistry
Online Access:http://eprints.utm.my/id/eprint/45037/
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spelling my.utm.450372017-10-01T01:19:19Z http://eprints.utm.my/id/eprint/45037/ Mechanical, thermal and surface investigations of chitosan/agar/PVA Ternary blended films El-Hefian, Esam A. Nasef, Mohamed Mahmoud Yahaya, Abdul Hamid QD Chemistry The mechanical and thermal properties of chitosan/agar/poly vinyl alcohol (CS/AG/PVA) ternary blended films having various proportions considering chitosan as the main component were investigated. The various variables static water contact angle such as contact angle, drop base area, drop volume and drop height was also studied in correlation with the variation of time. Results obtained from mechanical measurements showed a noticeable increase in the tensile strength (TS) coincided with a sharp decrease in elongation percent at break (E%) of blended films with increasing agar and PVA contents. The DSC results prevailed the development of an interaction between chitosan individual components: agar and PVA. Moreover, an enhancement of the wettability of the blends was obtained with increasing agar and PVA contents. It was also found that the pure CS film and the blended films with 90/05/05 and 80/10/10 compositions were more affected by time than blended films with other compositions when the contact angle, the drop height and the drop length were studied as a function of time. In addition, when the drop is initially placed on the substrate, the drop area and the drop volume of all films remained almost constant up to a certain time after which they showed a slight difference with the elapse of time. W W W Publications (P) India 2011 Article PeerReviewed El-Hefian, Esam A. and Nasef, Mohamed Mahmoud and Yahaya, Abdul Hamid (2011) Mechanical, thermal and surface investigations of chitosan/agar/PVA Ternary blended films. E-Journal of Chemistry, 8 (1). S105-S112. ISSN 0973-4945
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/
topic QD Chemistry
spellingShingle QD Chemistry
El-Hefian, Esam A.
Nasef, Mohamed Mahmoud
Yahaya, Abdul Hamid
Mechanical, thermal and surface investigations of chitosan/agar/PVA Ternary blended films
description The mechanical and thermal properties of chitosan/agar/poly vinyl alcohol (CS/AG/PVA) ternary blended films having various proportions considering chitosan as the main component were investigated. The various variables static water contact angle such as contact angle, drop base area, drop volume and drop height was also studied in correlation with the variation of time. Results obtained from mechanical measurements showed a noticeable increase in the tensile strength (TS) coincided with a sharp decrease in elongation percent at break (E%) of blended films with increasing agar and PVA contents. The DSC results prevailed the development of an interaction between chitosan individual components: agar and PVA. Moreover, an enhancement of the wettability of the blends was obtained with increasing agar and PVA contents. It was also found that the pure CS film and the blended films with 90/05/05 and 80/10/10 compositions were more affected by time than blended films with other compositions when the contact angle, the drop height and the drop length were studied as a function of time. In addition, when the drop is initially placed on the substrate, the drop area and the drop volume of all films remained almost constant up to a certain time after which they showed a slight difference with the elapse of time.
format Article
author El-Hefian, Esam A.
Nasef, Mohamed Mahmoud
Yahaya, Abdul Hamid
author_facet El-Hefian, Esam A.
Nasef, Mohamed Mahmoud
Yahaya, Abdul Hamid
author_sort El-Hefian, Esam A.
title Mechanical, thermal and surface investigations of chitosan/agar/PVA Ternary blended films
title_short Mechanical, thermal and surface investigations of chitosan/agar/PVA Ternary blended films
title_full Mechanical, thermal and surface investigations of chitosan/agar/PVA Ternary blended films
title_fullStr Mechanical, thermal and surface investigations of chitosan/agar/PVA Ternary blended films
title_full_unstemmed Mechanical, thermal and surface investigations of chitosan/agar/PVA Ternary blended films
title_sort mechanical, thermal and surface investigations of chitosan/agar/pva ternary blended films
publisher W W W Publications (P) India
publishDate 2011
url http://eprints.utm.my/id/eprint/45037/
_version_ 1643651623354892288
score 13.211869

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