Biodegradable conductive poly(lactic acid) (PLA)/liquid natural rubber (LNR)/polyaniline (PANI) blends with low loading of PANI were prepared via a melt‐blending technique assisted by ultrasonic treatment which possessed enhanced electrical conductivity and mechanical, thermal and physical properties.

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This article studies the thermal properties of multi-walled carbon nanotubes (MWCNT) reinforced polylactic acid (PLA)/liquid natural rubber (LNR) blends which prepared via melt blending method. Various percentages (0.5, 1.5, 2.5, 3.5 and 4 wt%) of MWCNT were added into PLA/LNR blend. TGA shows that the addition of MWCNT into PLA/LNR blends helps to improve thermal stability of the PLA/LNR/MWCNT nanocomposites. DSC shows that the glass transition temperature increased when 0.5%, 1.5%, 2.5% and 3.5% of MWCNT was added to the PLA/LNR blend. The cold crystallization and melting temperature were reduced when MWCNT was added in the PLA/LNR blend systems. The SEM micrographs confirm the effect of good dispersion of 3.5wt% of MWCNT in PLA/LNR blend helps to promote well combined MWCNT-matrix networks and generate the synergistic effect of the system which is improved the thermal properties significantly.