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, Amalvy, Javier
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: 2019
Materias:
Coatings, hydrogen bonding, barrier properties
Acceso en línea:http://hdl.handle.net/20.500.12272/3426
Aporte de:
RIA - Repositorio Institucional Abierto (UTN) de Universidad Tecnológica Nacional
id I68-R174-20.500.12272-3426
record_format dspace
institution Universidad Tecnológica Nacional
institution_str I-68
repository_str R-174
collection RIA - Repositorio Institucional Abierto (UTN)
language Inglés
topic Coatings, hydrogen bonding, barrier properties
spellingShingle Coatings, hydrogen bonding, barrier properties
González-Forte, Lucía del Sol
Pardini, Oscar
Amalvy, Javier
Starch Polyvinyl Alcohol blends containing Polyurethane as plasticizer
topic_facet Coatings, 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 Artículo
publishedVersion
Artículo
author González-Forte, Lucía del Sol
Pardini, Oscar
Amalvy, Javier
author_facet González-Forte, Lucía del Sol
Pardini, Oscar
Amalvy, Javier
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 2019
url http://hdl.handle.net/20.500.12272/3426
work_keys_str_mv AT gonzalezforteluciadelsol starchpolyvinylalcoholblendscontainingpolyurethaneasplasticizer
AT pardinioscar starchpolyvinylalcoholblendscontainingpolyurethaneasplasticizer
AT amalvyjavier starchpolyvinylalcoholblendscontainingpolyurethaneasplasticizer
bdutipo_str Repositorios
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