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Title

Study of optimization of the synthesis and properties of biocomposite films based on grafted chitosan

AuthorsÁvila, Adelaida; Bierbrauer, Karina; Pucci, Graciela; López-González, Mar; Strumia, Miriam
KeywordsChitosan
HEMA
Grafted films
Food biodegradable covering
Issue Date2012
PublisherElsevier
CitationJournal of Food Engineering 109 (4) : 752–761 (2012)
AbstractAcrylic acid (AcAc) and 2-hydroxyethyl methacrylate (HEMA) were graft copolymerized onto the chitosan backbone using radical initiation under different experimental conditions. The grafted products were then characterized by FTIR, TGA, grafting and swelling index (%G and Q, respectively), Mechanical properties and biodegradability were determined. The study of the properties of the grafted films demonstrated a marked influence of the concentration of acrylic monomers, time and temperature on the %G. In addition, both grafted films (CH-g-HEMA and CH-g-AcAc) showed a noticeable difference in their mechanical behavior. CH-g-HEMA stands the highest deformation for longer periods in relation to smaller strain values, whereas CH-g-AcAc shows better tension strain but lower deformation. Therefore, CH-g- HEMA films have a vast potential for food biodegradable covering characterized by their mechanical properties, non-toxicity and biodegradability.
Publisher version (URL)http://dx.doi.org/10.1016/j.jfoodeng.2011.11.009,
URIhttp://hdl.handle.net/10261/49803
DOI10.1016/j.jfoodeng.2011.11.009,
ISSN0260-8774
Appears in Collections:(ICTP) Artículos
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