Biodegradability of Poly (lactic acid), Preparation and Characterization of PLA/Gum Arabic Blends |
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| Authors: | John M Onyari Francis Mulaa Joshua Muia Paul Shiundu |
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| Institution: | (1) Department of Chemistry, College of Biological and Physical Sciences, University of Nairobi, P.O. Box 30197, Nairobi, Kenya;(2) Department of Biochemistry, College of Biological and Physical Sciences, University of Nairobi, P.O. Box 30197, Nairobi, Kenya;(3) Department of Chemistry, Western Michigan University, Kalamazoo, MI 49008-5413, USA |
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| Abstract: | In this study, the biodegradation of PLA films using microorganisms from Lake Bogoria (Kenya) were investigated. The biodegradation
tests done using certain strains of thermophilic bacteria showed faster biodegradation rates and demonstrated temperature
dependency. The biodegradation of the PLA films was studied using Gel Permeation Chromatography (GPC) and light microscopy.
The biodegradation of PLA was demonstrated by decrease in molecular weight. The preparation and characterization of PLA/Gum
Arabic blends were also investigated using DSC, TGA, TMA and NMR. In summary, the results obtained in this research show that
PLA films undergo fast biodegradation using thermophiles isolated from Lake Bogoria. The PLA/GA blends studies show it is
possible to prepare films of varying hydrophobic–hydrophilic properties for various applications. |
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| Keywords: | Polylactic acid Gum Arabic Blends Biodegradation Characterization |
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