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dc.contributor.author
Martucci, Josefa Fabiana
dc.contributor.author
Ruseckaite, Roxana Alejandra
dc.contributor.other
Jimenez, A.
dc.contributor.other
Zaikov, G. E.
dc.date.available
2023-06-09T12:29:20Z
dc.date.issued
2011
dc.identifier.citation
Martucci, Josefa Fabiana; Ruseckaite, Roxana Alejandra; Preparation and properties of three layer sheets based on gelatin and poly(lactic acid); Nova Science Publishers; 2011; 67-81
dc.identifier.isbn
978-1-61209-520-2
dc.identifier.uri
http://hdl.handle.net/11336/200062
dc.description.abstract
Glycerol plasticized-gelatin (Ge-30Gly) and poly(lactic acid) (PLA) films were prepared by heat-compression molded and then piled together to produce a biodegradable three-layer sheet with PLA as outer layers and Ge-30Gly as inner layer. Multilayer sheets displayed a compact and uniform microstructure due to the highly compatible individual layers which could interact by strong hydrogen bonding. Lamination reduced total soluble matter compared to the single layers while keeping transparency. Tensile strength of the multilayer sheet (36.24±4.27 MPa) increased 16-folds compared with that of Ge-30Gly. Lamination also had beneficial effect on the barrier properties. The WVP of the multilayer sheet (1.2±0.1 10-14 kg∙m·Pa-1·s-1∙m-2) decreased compared with that of Ge-30Gly while the oxygen permeability (17.1±2.3 cm3(O2)·mm·m-2·day-1) was reduced with respect to that of neat PLA and was comparable to the value of Ge-30Gly layer. The individual layers and multilayer sheet were submitted to degradation under indoor soil burial conditions. Biodegradation of multilayer as well as individual components was evaluated by monitoring water absorption and weight loss. During the time of the experiment, weight loss of multilayer sheet show two stages. During the first stage, the weight loss of the film increased rapidly due to the lost of Ge-30Gly inner layer. From 25th day until 120th day no further changes were observed suggesting that the inner layer was completely biodegraded. Visually, multilayer sheet turned from transparent to opaque after 120 days due to an increment of the crystallinity of the PLA polymer matrix. It was confirmed by DRX. SEM analysis shows that after 25th days a significant change in the overall morphology of multilayer sheet can be observed. This suggested that Ge inner layer promote the PLA outer layer degradation, probably because the Ge hydrophilicity allows the water molecules to penetrate more easily within the PLA and to trigger the hydrolytic degradation process faster.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Nova Science Publishers
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
GELATIN
dc.subject
POLY(LACTIC ACID)
dc.subject
THREE-LAYER SHEETS
dc.subject
BIODEGRADABLE
dc.subject.classification
Ingeniería de los Materiales
dc.subject.classification
Ingeniería de los Materiales
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
dc.title
Preparation and properties of three layer sheets based on gelatin and poly(lactic acid)
dc.type
info:eu-repo/semantics/publishedVersion
dc.type
info:eu-repo/semantics/bookPart
dc.type
info:ar-repo/semantics/parte de libro
dc.date.updated
2021-03-12T20:09:12Z
dc.journal.pagination
67-81
dc.journal.pais
Estados Unidos
dc.journal.ciudad
New York
dc.description.fil
Fil: Martucci, Josefa Fabiana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
dc.description.fil
Fil: Ruseckaite, Roxana Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
dc.conicet.paginas
234
dc.source.titulo
Biodegradable Polymers and Sustainable Polymers
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