Characterization of biodegradable PLLA/PCL and PLLA/PBSL polymeric blends

V. Vilay, M. Mariatti, Zulkifli Ahmad, K. Pasomsouk, Mitsugu Todo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Recently, much attention has been paid to poly(L-lactic acid) (PLLA), a biodegradable polymer made from starch of potato and cone, as a substitute for petrochemical polymers. PLLA has strength and modulus comparable to commercially available engineering polymers; however, PLLA exhibits brittle fracture behavior especially under impact loading conditions and therefore, toughening of PLLA becomes one of the most important issues in the field of bio-polymer engineering. Just recently, polymer blends of PLLA and ductile biodegradable polymers have been developed in order to improve the ductility of PLLA. In the present study, two different kinds of biodegradable polymer blends were prepared from PLLA, poly(e-caprolactone) (PCL) and poly(butylene succinate-co-L-lactate) (PBSL). The binary blends of PLLA with PCL and PLLA with PBSL were prepared in different proportions. The tensile properties, melting flow index (MFI), and dynamic mechanical analysis (DMA) of these binary blends and virgin polymers were then evaluated. It was found that the addition of PCL and PBSL to PLLA reduced the tensile strength and modulus, whereas the elongation at break and MFI values increased. Morphological analysis of PLLA and PLLA blends on the fractured surface under liquid nitrogen was carried out by scanning electron microscopy (SEM) on both binary blends. The SEM analyses also revealed that all the PLLA/PCL and PLLA/PBSL blends are immiscible blends where the PCL and PBSL phase are finely dispersed in the PLLA-rich phase.

Original languageEnglish
Title of host publicationProgress of Composites 2008 in Asia and Australasia - Proceedings of the 6th Asian-Australasian Conference on Composite Materials, ACCM 2008
Pages247-250
Number of pages4
Publication statusPublished - Dec 1 2008
Event6th Asian-Australasian Conference on Composite Materials: Progress of Composites 2008 in Asia and Australasia, ACCM 2008 - Kumamoto, Kyushu, Japan
Duration: Sep 23 2008Sep 26 2008

Publication series

NameProgress of Composites 2008 in Asia and Australasia - Proceedings of the 6th Asian-Australasian Conference on Composite Materials, ACCM 2008

Other

Other6th Asian-Australasian Conference on Composite Materials: Progress of Composites 2008 in Asia and Australasia, ACCM 2008
CountryJapan
CityKumamoto, Kyushu
Period9/23/089/26/08

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites

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    Vilay, V., Mariatti, M., Ahmad, Z., Pasomsouk, K., & Todo, M. (2008). Characterization of biodegradable PLLA/PCL and PLLA/PBSL polymeric blends. In Progress of Composites 2008 in Asia and Australasia - Proceedings of the 6th Asian-Australasian Conference on Composite Materials, ACCM 2008 (pp. 247-250). (Progress of Composites 2008 in Asia and Australasia - Proceedings of the 6th Asian-Australasian Conference on Composite Materials, ACCM 2008).