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https://doi.org/10.37358/Rev.Chim.1949

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Revista de Chimie (Rev. Chim.), Year 2012, Volume 63, Issue 5,





LOREDANA-MIHAELA DOBRE, TANASE DOBRE, MARIANA FERDES
Biodegradation Kinetics of Antimicrobial Composite Films
Based on Polyvinyl Alcohol-bacterial Cellulose

Abstract:

New antimicrobial material based on bacterial cellulose-polyvinyl alcohol and benzoic acid was developed. Their biodegradability kinetics was studied by compost method for small sheets of processed material. Weight loss and spectrophotometric analyses were used to characterize the presence and dynamics of biodegradation of these materials. The macrostructure of the biodegraded materials was observed by optical microscopy. The results proved that the materials are promising candidates for biodegradation. All the films lost different percentages from their initial weights and FTIR spectra of the materials before and after degradation indicated scission of chemical bonds. Also, the antimicrobial activity against Escherichia Coli K12-MG1655 was studied. The composite films containing benzoic acid revealed strong inhibitory effect against studied bacteria. Keywords: biodegradation kinetics, antimicrobial films, benzoic acid, bacterial cellulose, polyvinyl alcohol


Issue: 2012, Volume 63, Issue 5
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