Title
Biodegradable films based on blends of gelatin and poly (vinyl alcohol): Effect of PVA type or concentration on some physical properties of films
Date Issued
13 October 2008
Access level
metadata only access
Resource Type
journal article
Author(s)
Silva G.G.D.
Sobral P.J.A.
Carvalho R.A.
Bergo P.V.A.
Habitante A.M.Q.B.
Publisher(s)
Springer Nature
Abstract
The aim of this work was to develop biodegradable films based on blends of gelatin and poly (vinyl alcohol) (PVA), without a plasticizer. Firstly, the effect of five types of PVA with different degree of hydrolysis (DH) on the physical properties of films elaborated with blends containing 23.1% PVA was studied. One PVA type was then chosen for the study of the effect of the PVA concentration on the mechanical properties, color, opacity, gloss, and water solubility of the films. The five types of PVA studied allowed for films with different characteristics, but with no direct relationship with the DH of the PVA. Therefore, the PVA Celvol®418 with a DH = 91.8% was chosen for the second part, because they produced films with greater tensile strength. The PVA concentration affected all studied properties of films. These results could be explained by the results of the DSC and FTIR analyses, which showed that some interactions between the gelatin and the PVA occurred depending on the PVA concentration, affecting the crystallinity of the films. © Springer Science+Business Media, LLC 2008.
Start page
276
End page
285
Volume
16
Issue
4
Language
English
OCDE Knowledge area
Ingeniería ambiental
Biotecnología ambiental
Subjects
Scopus EID
2-s2.0-58149376313
Source
Journal of Polymers and the Environment
ISSN of the container
1566-2543
Sponsor(s)
Acknowledgements To FAPESP for the research Grant (05/57781-8), for the IC fellowship (05/54418-0) of GGDS, and for the Postdoctoral fellowship (05/54688-7) of PVAB; and to CNPq for the Postdoctoral fellowship of OMT, and PQI fellowship of PJAS.
Sources of information:
Directorio de Producción Científica
Scopus