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Statistical design of sustainable composites from poly(lactic acid) and grape pomace
Author(s) -
Gowman Alison,
RodriguezUribe Arturo,
Defersha Fantahun,
Mohanty Amar K.,
Misra Manjusri
Publication year - 2020
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.49061
Subject(s) - biocomposite , ultimate tensile strength , materials science , flexural strength , izod impact strength test , composite material , pomace , maleic anhydride , polylactic acid , flexural modulus , lactic acid , compression molding , molding (decorative) , wood flour , composite number , polymer , copolymer , food science , chemistry , mold , genetics , biology , bacteria
Abstract Biocomposites from poly(lactic acid) (PLA) and grape pomace (GP) were created via injection molding to examine the effects of GP in a PLA matrix. To optimize the mechanical performance the biocomposites were compatibilized with maleic anhydride grafted PLA (MA‐ g ‐PLA). The objective of this work was to create a model that could accurately predict the mechanical properties of GP/PLA biocomposites. A region of feasibility for the biocomposites was determined using a statistical design of experiments. Linear regression was used to model the mechanical performance and predicted results with an error of 10% for both tensile and flexural strength and 16% for impact strength. The model was verified with a biocomposite of PLA/GP/MA‐ g ‐PLA with a ratio of 62/36/2. This biocomposite had a tensile strength, flexural modulus, and impact strength of 25.8 MPa, 40.0 MPa, and 18.4 J/m, respectively. It was found that a linear model can accurately predict the mechanical properties of PLA/GP/MA‐ g ‐PLA biocomposites.