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Molecules 2012, 17(10), 11729-11747; doi:10.3390/molecules171011729
Article

Mechanical, Thermal and Morphological Properties of Poly(lactic acid)/Epoxidized Palm Olein Blend

1,* , 1,* , 1
, 2
 and 3
Received: 10 June 2012; in revised form: 1 October 2012 / Accepted: 5 October 2012 / Published: 8 October 2012
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Abstract: Poly(lactic acid) (PLA) is known to be a useful material in substituting the conventional petroleum-based polymer used in packaging, due to its biodegradability and high mechanical strength. Despite the excellent properties of PLA, low flexibility has limited the application of this material. Thus, epoxidized palm olein (EPO) was incorporated into PLA at different loadings (1, 2, 3, 4 and 5 wt%) through the melt blending technique and the product was characterized. The addition of EPO resulted in a decrease in glass transition temperature and an increase of elongation-at-break, which indicates an increase in the PLA chain mobility. PLA/EPO blends also exhibited higher thermal stability than neat PLA. Further, the PLA/1 wt% EPO blend showed enhancement in the tensile, flexural and impact properties. This is due to improved interaction in the blend producing good compatible morphologies, which can be revealed by Scanning Electron Microscopy (SEM) analysis. Therefore, PLA can be efficiently plasticized by EPO and the feasibility of its use as flexible film for food packaging should be considered.
Keywords: biodegradable polymer; plasticizer; epoxidized palm oil; melt blending biodegradable polymer; plasticizer; epoxidized palm oil; melt blending
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Silverajah, V.S.G.; Ibrahim, N.A.; Zainuddin, N.; Yunus, W.M.Z.W.; Hassan, H.A. Mechanical, Thermal and Morphological Properties of Poly(lactic acid)/Epoxidized Palm Olein Blend. Molecules 2012, 17, 11729-11747.

AMA Style

Silverajah VSG, Ibrahim NA, Zainuddin N, Yunus WMZW, Hassan HA. Mechanical, Thermal and Morphological Properties of Poly(lactic acid)/Epoxidized Palm Olein Blend. Molecules. 2012; 17(10):11729-11747.

Chicago/Turabian Style

Silverajah, V. S. Giita; Ibrahim, Nor Azowa; Zainuddin, Norhazlin; Yunus, Wan Md Zin Wan; Hassan, Hazimah Abu. 2012. "Mechanical, Thermal and Morphological Properties of Poly(lactic acid)/Epoxidized Palm Olein Blend." Molecules 17, no. 10: 11729-11747.


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