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Sustainable Green Composites from Grape Pomace and Biodegradable Plastics

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Title: Sustainable Green Composites from Grape Pomace and Biodegradable Plastics
Author: Gowman, Alison
Department: School of Engineering
Program: Engineering
Advisor: Misra, Manjusri
Abstract: This study investigated the use of two different biobased aliphatic polyesters with the incorporation of a by-product of the wine industry, grape pomace (GP). The biobased polyesters, poly(butylene succinate) (BioPBS) and poly(lactic acid) (PLA), are derived from biological sources and were combined with GP to generate sustainable green composites. GP was characterized and then combined with BioPBS or PLA, compounded in a lab scale extruder, and then injection molded into test bars. Mechanical properties and surface morphology were investigated for both composite types, along with thermal properties for the BioPBS. A design of experiments was created for PLA based composites to estimate mechanical properties. Maleic anhydride (MA), a compatibilizer, increased the mechanical and thermal properties of the biocomposites. The addition of GP and MA increased the impact strength by 48 and 59 % for the biocomposites with (76/22/2) PLA/GP/MA-g-PLA and (57/40/3) BioPBS/GP/MA-g-BioPBS, compared to neat PLA and neat BioPBS, respectively.
Date: 2019-04
Rights: Attribution-NonCommercial-NoDerivatives 4.0 International
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Attribution-NonCommercial-NoDerivatives 4.0 International Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 International