Size effect of ZnO nanorods on physicochemical properties of plasticized starch composites

This work demonstrates that the size of ZnO nanorods (ZnONR) with similar aspect ratio determines several physicochemical and microbiological properties of thermoplastic starch composites (TPS/ZnONR) at a given concentration of ZnONRs. A combination of sol-gel and hydrothermal methods was developed...

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Autores principales:	Famá, Lucía Mercedes, Goyanes, Silvia Nair
Publicado:	2017
Materias:	Bactericidal activity Biodegradability Starch composite ZnO nanorods size Aspect ratio Nanorods Radiation shielding Sol-gels X ray diffraction analysis Zinc oxide Anti-bacterial activity Composite applications Physicochemical property Starch composites Starch retrogradation Water vapor permeability ZnO nanorod Starch
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01448617_v157_n_p1611_Guz http://hdl.handle.net/20.500.12110/paper_01448617_v157_n_p1611_Guz
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_01448617_v157_n_p1611_Guz
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spelling	paper:paper_01448617_v157_n_p1611_Guz2023-06-08T15:12:03Z Size effect of ZnO nanorods on physicochemical properties of plasticized starch composites Famá, Lucía Mercedes Goyanes, Silvia Nair Bactericidal activity Biodegradability Starch composite ZnO nanorods size Aspect ratio Biodegradability Nanorods Radiation shielding Sol-gels X ray diffraction analysis Zinc oxide Anti-bacterial activity Bactericidal activity Composite applications Physicochemical property Starch composites Starch retrogradation Water vapor permeability ZnO nanorod Starch This work demonstrates that the size of ZnO nanorods (ZnONR) with similar aspect ratio determines several physicochemical and microbiological properties of thermoplastic starch composites (TPS/ZnONR) at a given concentration of ZnONRs. A combination of sol-gel and hydrothermal methods was developed to synthesize ZnONR with different sizes but similar aspect ratios. Starch composites containing 1 wt.% of ZnONR were prepared by casting. Composites with smaller size nanorods (ZnONR-S) showed more efficiency in shielding UVA radiation and had a higher solubility and water vapor permeability than those with larger nanorods (ZnONR-L). Mechanical properties, biodegradability and antibacterial activity were also influenced by the size of the ZnONR. X-ray diffraction analysis showed that composites with ZnONR-S maintained the typical B-V type starch structure, intensifying the V-type starch structure peaks, while composite with ZnONR-L induced the formation of an amorphous structure, preventing starch retrogradation during storage. Properties affected by nanorods size are fundamental in determining composite applications. © 2016 Elsevier Ltd Fil:Famá, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Goyanes, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2017 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01448617_v157_n_p1611_Guz http://hdl.handle.net/20.500.12110/paper_01448617_v157_n_p1611_Guz
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Bactericidal activity Biodegradability Starch composite ZnO nanorods size Aspect ratio Biodegradability Nanorods Radiation shielding Sol-gels X ray diffraction analysis Zinc oxide Anti-bacterial activity Bactericidal activity Composite applications Physicochemical property Starch composites Starch retrogradation Water vapor permeability ZnO nanorod Starch
spellingShingle	Bactericidal activity Biodegradability Starch composite ZnO nanorods size Aspect ratio Biodegradability Nanorods Radiation shielding Sol-gels X ray diffraction analysis Zinc oxide Anti-bacterial activity Bactericidal activity Composite applications Physicochemical property Starch composites Starch retrogradation Water vapor permeability ZnO nanorod Starch Famá, Lucía Mercedes Goyanes, Silvia Nair Size effect of ZnO nanorods on physicochemical properties of plasticized starch composites
topic_facet	Bactericidal activity Biodegradability Starch composite ZnO nanorods size Aspect ratio Biodegradability Nanorods Radiation shielding Sol-gels X ray diffraction analysis Zinc oxide Anti-bacterial activity Bactericidal activity Composite applications Physicochemical property Starch composites Starch retrogradation Water vapor permeability ZnO nanorod Starch
description	This work demonstrates that the size of ZnO nanorods (ZnONR) with similar aspect ratio determines several physicochemical and microbiological properties of thermoplastic starch composites (TPS/ZnONR) at a given concentration of ZnONRs. A combination of sol-gel and hydrothermal methods was developed to synthesize ZnONR with different sizes but similar aspect ratios. Starch composites containing 1 wt.% of ZnONR were prepared by casting. Composites with smaller size nanorods (ZnONR-S) showed more efficiency in shielding UVA radiation and had a higher solubility and water vapor permeability than those with larger nanorods (ZnONR-L). Mechanical properties, biodegradability and antibacterial activity were also influenced by the size of the ZnONR. X-ray diffraction analysis showed that composites with ZnONR-S maintained the typical B-V type starch structure, intensifying the V-type starch structure peaks, while composite with ZnONR-L induced the formation of an amorphous structure, preventing starch retrogradation during storage. Properties affected by nanorods size are fundamental in determining composite applications. © 2016 Elsevier Ltd
author	Famá, Lucía Mercedes Goyanes, Silvia Nair
author_facet	Famá, Lucía Mercedes Goyanes, Silvia Nair
author_sort	Famá, Lucía Mercedes
title	Size effect of ZnO nanorods on physicochemical properties of plasticized starch composites
title_short	Size effect of ZnO nanorods on physicochemical properties of plasticized starch composites
title_full	Size effect of ZnO nanorods on physicochemical properties of plasticized starch composites
title_fullStr	Size effect of ZnO nanorods on physicochemical properties of plasticized starch composites
title_full_unstemmed	Size effect of ZnO nanorods on physicochemical properties of plasticized starch composites
title_sort	size effect of zno nanorods on physicochemical properties of plasticized starch composites
publishDate	2017
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01448617_v157_n_p1611_Guz http://hdl.handle.net/20.500.12110/paper_01448617_v157_n_p1611_Guz
work_keys_str_mv	AT famaluciamercedes sizeeffectofznonanorodsonphysicochemicalpropertiesofplasticizedstarchcomposites AT goyanessilvianair sizeeffectofznonanorodsonphysicochemicalpropertiesofplasticizedstarchcomposites
_version_	1768544725281800192

Size effect of ZnO nanorods on physicochemical properties of plasticized starch composites

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