WATER VAPOR PERMEABILITY AND MECHANICAL PROPERTIES OF CHITOSAN COMPOSITE FILMS

Chitosan films or membranes can be obtained by casting chitosan solutions in acetic acid at 1 % w/v concentration at room temperature. The films set were elaborated from 2% chitosan solutions mixed with three plasticizers (polyethylene glycol 200 (PEG), sorbitol and glycerol) and two surfactants (Tw...

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Autores principales:	Patricia Miranda,S., Garnica,Omar, Lara-Sagahon,Virginia, Cárdenas,Galo
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2004
Materias:	chitosan chitosan films thickness water vapor permeability mechanical properties
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072004000200013
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spelling	oai:scielo:S0717-970720040002000132005-09-21WATER VAPOR PERMEABILITY AND MECHANICAL PROPERTIES OF CHITOSAN COMPOSITE FILMSPatricia Miranda,S.Garnica,OmarLara-Sagahon,VirginiaCárdenas,Galo chitosan chitosan films thickness water vapor permeability mechanical properties Chitosan films or membranes can be obtained by casting chitosan solutions in acetic acid at 1 % w/v concentration at room temperature. The films set were elaborated from 2% chitosan solutions mixed with three plasticizers (polyethylene glycol 200 (PEG), sorbitol and glycerol) and two surfactants (Tween 60 and Tween 80) at two concentrations. The goal was to decrease the water vapor permeability and to improve the mechanical properties of chitosan films. The effects of plasticizers (PEG, sorbitol and glycerol) and emulsifiers (Tween 60 and Tween 80) at two concentrations from chitosan solution on water vapor permeability and mechanical properties of cast films were evaluated. Water vapor permeability ranged from 3.64 to 6.56 g mm / h m² KPa., tension force from 7.23 to 48.3 MPa and elongation percentage from 22.9 to 167.02 were obtained. Chitosan two percent with 0.3 % Tween 80 produces films that showed the lowest permeability value. Chitosan with 0.6 % glycerol has the highest percentaje of elongation, being 4.5 times higher than chitosan films. Chitosan with 0.6% Tween 80 improved the hydrophobicity of the chitosan film in 1.14 times. The highest value for tension force was found for chitosan with 0.6 % of Tween 60. These values are similar to some polymers based on mineral oilinfo:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.49 n.2 20042004-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072004000200013en10.4067/S0717-97072004000200013
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	chitosan chitosan films thickness water vapor permeability mechanical properties
spellingShingle	chitosan chitosan films thickness water vapor permeability mechanical properties Patricia Miranda,S. Garnica,Omar Lara-Sagahon,Virginia Cárdenas,Galo WATER VAPOR PERMEABILITY AND MECHANICAL PROPERTIES OF CHITOSAN COMPOSITE FILMS
description	Chitosan films or membranes can be obtained by casting chitosan solutions in acetic acid at 1 % w/v concentration at room temperature. The films set were elaborated from 2% chitosan solutions mixed with three plasticizers (polyethylene glycol 200 (PEG), sorbitol and glycerol) and two surfactants (Tween 60 and Tween 80) at two concentrations. The goal was to decrease the water vapor permeability and to improve the mechanical properties of chitosan films. The effects of plasticizers (PEG, sorbitol and glycerol) and emulsifiers (Tween 60 and Tween 80) at two concentrations from chitosan solution on water vapor permeability and mechanical properties of cast films were evaluated. Water vapor permeability ranged from 3.64 to 6.56 g mm / h m² KPa., tension force from 7.23 to 48.3 MPa and elongation percentage from 22.9 to 167.02 were obtained. Chitosan two percent with 0.3 % Tween 80 produces films that showed the lowest permeability value. Chitosan with 0.6 % glycerol has the highest percentaje of elongation, being 4.5 times higher than chitosan films. Chitosan with 0.6% Tween 80 improved the hydrophobicity of the chitosan film in 1.14 times. The highest value for tension force was found for chitosan with 0.6 % of Tween 60. These values are similar to some polymers based on mineral oil
author	Patricia Miranda,S. Garnica,Omar Lara-Sagahon,Virginia Cárdenas,Galo
author_facet	Patricia Miranda,S. Garnica,Omar Lara-Sagahon,Virginia Cárdenas,Galo
author_sort	Patricia Miranda,S.
title	WATER VAPOR PERMEABILITY AND MECHANICAL PROPERTIES OF CHITOSAN COMPOSITE FILMS
title_short	WATER VAPOR PERMEABILITY AND MECHANICAL PROPERTIES OF CHITOSAN COMPOSITE FILMS
title_full	WATER VAPOR PERMEABILITY AND MECHANICAL PROPERTIES OF CHITOSAN COMPOSITE FILMS
title_fullStr	WATER VAPOR PERMEABILITY AND MECHANICAL PROPERTIES OF CHITOSAN COMPOSITE FILMS
title_full_unstemmed	WATER VAPOR PERMEABILITY AND MECHANICAL PROPERTIES OF CHITOSAN COMPOSITE FILMS
title_sort	water vapor permeability and mechanical properties of chitosan composite films
publisher	Sociedad Chilena de Química
publishDate	2004
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072004000200013
work_keys_str_mv	AT patriciamirandas watervaporpermeabilityandmechanicalpropertiesofchitosancompositefilms AT garnicaomar watervaporpermeabilityandmechanicalpropertiesofchitosancompositefilms AT larasagahonvirginia watervaporpermeabilityandmechanicalpropertiesofchitosancompositefilms AT cardenasgalo watervaporpermeabilityandmechanicalpropertiesofchitosancompositefilms
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WATER VAPOR PERMEABILITY AND MECHANICAL PROPERTIES OF CHITOSAN COMPOSITE FILMS

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