Changes induced by UV radiation in the presence of sodium benzoate in films formulated with polyvinyl alcohol and carboxymethyl cellulose

This work was focused on: i) developing single and blend films based on carboxymethyl cellulose (CMC) and polyvinyl alcohol (PVOH) studying their properties, ii) analyzing the interactions between CMC and PVOH and their modifications UV-induced in the presence of sodium benzoate (SB), and iii) evalu...

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Detalles Bibliográficos
Autores principales: Villarruel, S., Giannuzzi, Leda, Rivero, Sandra, Pinotti, Adriana
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2015
Materias:
Química
Sodium benzoate
Blend films
UV radiation
CMC
PVOH
Antimicrobial capacity
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/99521
https://ri.conicet.gov.ar/11336/49033
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-99521
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Sodium benzoate
Blend films
UV radiation
CMC
PVOH
Antimicrobial capacity
spellingShingle Química
Sodium benzoate
Blend films
UV radiation
CMC
PVOH
Antimicrobial capacity
Villarruel, S.
Giannuzzi, Leda
Rivero, Sandra
Pinotti, Adriana
Changes induced by UV radiation in the presence of sodium benzoate in films formulated with polyvinyl alcohol and carboxymethyl cellulose
topic_facet Química
Sodium benzoate
Blend films
UV radiation
CMC
PVOH
Antimicrobial capacity
description This work was focused on: i) developing single and blend films based on carboxymethyl cellulose (CMC) and polyvinyl alcohol (PVOH) studying their properties, ii) analyzing the interactions between CMC and PVOH and their modifications UV-induced in the presence of sodium benzoate (SB), and iii) evaluating the antimicrobial capacity of blend films containing SB with and without UV treatment. Once the blend films with SB were exposed to UV radiation, they exhibited lower moisture content as well as a greater elongation at break and rougher surfaces compared to those without treatment. Considering oxygen barrier properties, the low values obtained would allow their application as packaging with selective oxygen permeability. Moreover, the characteristics of the amorphous phase of the matrix prevailed with a rearrangement of the structure of the polymer chain, causing a decrease of the crystallinity degree. These results were supported by X-rays and DSC analysis. FT-IR spectra reflected some degree of polymer–polymer interaction at a molecular level in the amorphous regions. The incorporation of sodium benzoate combined with UV treatment in blend films was positive from the microbial point of view because of the growth inhibition of a wide spectrum of microorganisms. From a physicochemical perspective, the UV treatment of films also changed their morphology rendering them more insoluble in water, turning the functionalized blend films into a potential material to be applied as food packaging.
format Articulo
Preprint
author Villarruel, S.
Giannuzzi, Leda
Rivero, Sandra
Pinotti, Adriana
author_facet Villarruel, S.
Giannuzzi, Leda
Rivero, Sandra
Pinotti, Adriana
author_sort Villarruel, S.
title Changes induced by UV radiation in the presence of sodium benzoate in films formulated with polyvinyl alcohol and carboxymethyl cellulose
title_short Changes induced by UV radiation in the presence of sodium benzoate in films formulated with polyvinyl alcohol and carboxymethyl cellulose
title_full Changes induced by UV radiation in the presence of sodium benzoate in films formulated with polyvinyl alcohol and carboxymethyl cellulose
title_fullStr Changes induced by UV radiation in the presence of sodium benzoate in films formulated with polyvinyl alcohol and carboxymethyl cellulose
title_full_unstemmed Changes induced by UV radiation in the presence of sodium benzoate in films formulated with polyvinyl alcohol and carboxymethyl cellulose
title_sort changes induced by uv radiation in the presence of sodium benzoate in films formulated with polyvinyl alcohol and carboxymethyl cellulose
publishDate 2015
url http://sedici.unlp.edu.ar/handle/10915/99521
https://ri.conicet.gov.ar/11336/49033
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AT pinottiadriana changesinducedbyuvradiationinthepresenceofsodiumbenzoateinfilmsformulatedwithpolyvinylalcoholandcarboxymethylcellulose
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