Study of the behavior of biodegradable starch/polyvinyl alcohol/rosin blends

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Title: Study of the behavior of biodegradable starch/polyvinyl alcohol/rosin blends
Authors: Domene-López, Daniel | Guillén, M.M. | Martín Gullón, Ignacio | García Quesada, Juan Carlos | Montalbán, Mercedes G.
Research Group/s: Residuos, Energía, Medio Ambiente y Nanotecnología (REMAN)
Center, Department or Service: Universidad de Alicante. Departamento de Ingeniería Química
Keywords: Potato starch | Polyvinyl alcohol | Rosin | Melt mixing | Polymer blend
Knowledge Area: Ingeniería Química
Issue Date: 15-Dec-2018
Publisher: Elsevier
Citation: Carbohydrate Polymers. 2018, 202: 299-305. doi:10.1016/j.carbpol.2018.08.137
Abstract: Biodegradable potato starch/PVA samples containing different concentrations of rosin were prepared by melt-mixing in order to study the enhancement of the properties of native starch films. Glycerol and polyvinyl alcohol (PVA) are commonly used as plasticizers of starch. Their relatively low molecular weight (compared with starch) contributes to a good processability. Rosin is a renewable product whose incorporation in the starch/PVA matrix induces processing aid and reinforcing effects. Its relatively high molecular weight might prevent its migration to the surface of the final product. Water content, solubility in water, mechanical properties, microstructure and dynamic mechanical analysis of the samples were studied. The addition of 8% rosin to starch/PVA blends led to tensile strength values higher than 10 MPa and elongation at break values close to 2000%, values comparable to those offered by conventional polymers used in food packaging, for example LDPE. Furthermore, starch compounds have low cost and high biodegradability.
Sponsor: This work was partially supported from the European Commission (FEDER/ERDF) and the Spanish MINECO (Ref. CTQ2016-78246-R) and Generalitat Valenciana (Project PROMETEOII/2014/007). M.G. Montalbán acknowledges support from MINECO (Juan de la Cierva-Formación contract, Ref. FJCI-2016-28081).
URI: http://hdl.handle.net/10045/79811
ISSN: 0144-8617 (Print) | 1879-1344 (Online)
DOI: 10.1016/j.carbpol.2018.08.137
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2018 Elsevier Ltd.
Peer Review: si
Publisher version: https://doi.org/10.1016/j.carbpol.2018.08.137
Appears in Collections:INV - REMAN - Artículos de Revistas

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