Morphological, mechanical, and thermal characterization of biopolymer composites based on polylactide and nanographite platelets

Esmaeil Narimissa, Rahul K. Gupta*, Hyoung J. Choi, Nhol Kao, Margaret Jollands

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

This work focuses on development and optimization of polylactide (PLA) and nanographite platelets (NGP) based composites to display possible superior mechanical and improved thermal stability. Melt blending and dry mixing methods of fabrication were employed at temperature of 180°C. Different Loading fractions of NGP were incorporated into polymer matrix. Morphological evaluation techniques such as XRD and TEM were applied to determine the degree of dispersion of NGPs into PLA matrix. Mechanical properties were evaluated and correlated to structural morphologies of PLA/NGP composites. Thermal properties of composites were studied to examine possible changes in T g, T c, T m, and percentage crystallinity of these composites. The effect of mixing was also explored through double extrusion of some samples. It was concluded that composites containing 3 wt% NGP showed optimum mechanical performance without any significant changes in the thermal characteristics.

Original languageEnglish
Pages (from-to)1505-1515
Number of pages11
JournalPolymer Composites
Volume33
Issue number9
DOIs
StatePublished - Sep 2012
Externally publishedYes

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