Preparation and properties of sodium alginate films

Haydar U. Zaman; Md. Dalour Hossen Beg

doi:10.1515/polyeng-2013-0146

Article

Preparation and properties of sodium alginate films

Haydar U. Zaman and Md. Dalour Hossen Beg

Published/Copyright: November 12, 2013

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From the journal Journal of Polymer Engineering Volume 33 Issue 9

Abstract

Sodium alginate (SA) films were prepared by casting from methanol (MeOH) solutions and their tensile properties, like tensile strength (TS) and elongation at break (Eb %), were monitored. The resulting films of SA were photocured with vinyltriethoxysilane [H₂C=CH–Si–(OC₂H₅)₃] in order to improve the tensile properties. Several acrylic monomers of different functionalities as additives (2%), like ethyl acrylate (EA), 2-hydroxyethyl acrylate (2-HEA), and tripropylene glycol diacrylate (TPGDA), were incorporated with silane with the aid of UV radiation. Further analyses of the prepared films were characterized by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and a TS test. FTIR studies indicate that there are intermolecular hydrogen bonding interactions, i.e., –OH·····O=C in silane/SA blends. This blend films also exhibited the higher thermal stability and improved the tensile properties of the films. Degradation of SA by UV spectrometry induces time-dependent degradation.

Keywords: film; silane; sodium alginate; tensile and thermal properties; UV degradation

Corresponding author: Haydar U. Zaman, Faculty of Chemical & Natural Resources Engineering, University of Malaysia Pahang, Gambang, Kuantan, Pahang Darul Makmur, Malaysia, e-mail: haydar_zaman@yahoo.com

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Received: 2013-6-25

Accepted: 2013-10-9

Published Online: 2013-11-12

Published in Print: 2013-12-01

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https://doi.org/10.1515/polyeng-2013-0146

Keywords for this article

film; silane; sodium alginate; tensile and thermal properties; UV degradation