Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 132, Issue 11, Pages -Publisher
WILEY
DOI: 10.1002/app.41652
Keywords
mechanical properties; morphology; polyesters; properties and characterization; thermogravimetric analysis (TGA)
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Funding
- Ministry of Higher Education (MOHE), Malaysia [ERGS/1/11/STG/UPM/02/5]
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Plasticized poly(lactic acid) (PLA)-based nanocomposites filled with graphene nanoplatelets (xGnP) and containing poly(ethylene glycol) (PEG) and epoxidized palm oil (EPO) with ratio 2 : 1 (2P : 1E) as hybrid plasticizer were prepared by melt blending method. The key objective is to take advantage of plasticization to increase the material ductility while preserving valuable stiffness, strength, and toughness via addition of xGnP. The tensile modulus of PLA/2P : 1E/0.1 wt % xGnP was substantially improved (30%) with strength and elasticity maintained, as compared to plasticized PLA. TGA analysis revealed that the xGnP was capable of acting as barrier to reduce thermal diffusion across the plasticized PLA matrix, and thus enhanced thermal stability of the plasticized PLA. Incorporation of xGnP also enhanced antimicrobial activity of nanocomposites toward Escherichia coli, Salmonella typhimurium, Staphylococcus aureus, and Listeria monocytogenes. (c) 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41652.
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