Starch/Polyvinyl Alcohol Blends Containing Polyurethane as Plasticizer

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Starch-based films containing 70wt% of starch and a combination of poly(vinyl alcohol) and a low glass transition temperature polyurethane as plasticizer were prepared. The effect of PVA/PU ratio content on the morphology and physical properties was investigated by infrared spectroscopy (FTIR), X-ra...

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Detalles Bibliográficos
Autores principales:	González Forte, Lucía del Sol, Pardini, Oscar Ricardo, Amalvy, Javier Ignacio
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2016
Materias:	Ciencias Exactas Química coating, hydrogen bonding, barrier properties
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/75524
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-75524
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Exactas Química coating, hydrogen bonding, barrier properties
spellingShingle	Ciencias Exactas Química coating, hydrogen bonding, barrier properties González Forte, Lucía del Sol Pardini, Oscar Ricardo Amalvy, Javier Ignacio Starch/Polyvinyl Alcohol Blends Containing Polyurethane as Plasticizer
topic_facet	Ciencias Exactas Química coating, hydrogen bonding, barrier properties
description	Starch-based films containing 70wt% of starch and a combination of poly(vinyl alcohol) and a low glass transition temperature polyurethane as plasticizer were prepared. The effect of PVA/PU ratio content on the morphology and physical properties was investigated by infrared spectroscopy (FTIR), X-ray diffraction, differential scanning calorimetry, thermogravimetric analysis, scanning electron microscopy and measurements of mechanical properties and water vapor permeability. A relative small amount of PU (less than 15 wt%), significantly changes the properties of the blend due to intermolecular hydrogen bonding interactions between the three components. FTIR and XRD results indicate that blends containing PU are more amorphous than the pure starch/PVA blend and SEM images show a homogeneous matrix due to the good compatibility between starch and PU. Incorporation of PU to the starch/PVA blend shifts the glass transition temperature to lower values and reduce the elastic modulus, indicating a successful plasticization effect. The resulting blends produce films with improved physical properties.
format	Articulo Articulo
author	González Forte, Lucía del Sol Pardini, Oscar Ricardo Amalvy, Javier Ignacio
author_facet	González Forte, Lucía del Sol Pardini, Oscar Ricardo Amalvy, Javier Ignacio
author_sort	González Forte, Lucía del Sol
title	Starch/Polyvinyl Alcohol Blends Containing Polyurethane as Plasticizer
title_short	Starch/Polyvinyl Alcohol Blends Containing Polyurethane as Plasticizer
title_full	Starch/Polyvinyl Alcohol Blends Containing Polyurethane as Plasticizer
title_fullStr	Starch/Polyvinyl Alcohol Blends Containing Polyurethane as Plasticizer
title_full_unstemmed	Starch/Polyvinyl Alcohol Blends Containing Polyurethane as Plasticizer
title_sort	starch/polyvinyl alcohol blends containing polyurethane as plasticizer
publishDate	2016
url	http://sedici.unlp.edu.ar/handle/10915/75524
work_keys_str_mv	AT gonzalezforteluciadelsol starchpolyvinylalcoholblendscontainingpolyurethaneasplasticizer AT pardinioscarricardo starchpolyvinylalcoholblendscontainingpolyurethaneasplasticizer AT amalvyjavierignacio starchpolyvinylalcoholblendscontainingpolyurethaneasplasticizer
bdutipo_str	Repositorios
_version_	1764820484159963137

Starch/Polyvinyl Alcohol Blends Containing Polyurethane as Plasticizer

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