Effect of HNT on mechanical and thermal properties of poly(lactic acid)/polypropylene carbonate blends

Document Type

Article

Publication Date

1-1-2021

Abstract

In this work, the influence of halloysite nanotubes (HNTs) on the mechanical and thermal properties of the poly(lactic acid)/polypropylene carbonate (PLA/PPC 70/30) blend was studied. The HNT was incorporated into the PLA/PPC blend by melt mixing. It was found that addition of 2-6 wt % HNT successfully improved the tensile and flexural strength as well as the flexural and Young's moduli of PLA/PPC blend, due to the reinforcing effect. Although the elongation at break decreases with increasing HNT content, its value is much higher than that of pure PLA. Moreover, the addition of HNT did not affect the miscibility of PLA and PPC, since two glass transition temperatures were observed in the DSC thermograms. However, a higher content of HNT may improve the compatibility between PLA and PPC as evidenced by the lower difference between the glass transition temperature of PPC and PLA and reduced crystallinity resulting in higher tensile strength of nanocomposites.

Keywords

PLA, PPC, HNT, Mechanical properties, Thermal properties

Publication Title

Polimery

Divisions

fac_eng

Funders

Faculty of Engineering, University of Malaya

Volume

66

Issue

9

Publisher

INDUSTRIAL CHEMISTRY RESEARCH INST

Publisher Location

8 RYDYGIERA STR, 01-793 WARSAW, POLAND

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