e-ISSN 2231-8542
ISSN 1511-3701

Home / Regular Issue / JTAS Vol. 19 (2) Jul. 2011 / JST-0230-2011


Flow Behaviour and Viscoelasticity of Polypropylene-Kaolin Composites Extruded at Different Temperatures

Nor Azura Abdul Rahim, Zulkifli Mohamad Ariff and Azlan Ariffin

Pertanika Journal of Tropical Agricultural Science, Volume 19, Issue 2, July 2011

Keywords: Composites, polyolefins, processing, rheology, swelling

Published on:

A study of kaolin addition in polypropylene (PP-kaolin) melt was carried out to characterize its flow behaviour and viscoelasticity at different temperatures. The compound of 20 wt% kaolin was prepared by melt mixing using two roll-mill heated at 185°C, while the compounded composites were put through a single screw extruder to evaluate its melt flow properties. The prepared PP-Kaolin composites exhibited a shear thinning behaviour and appeared to be strongly dependent on temperature. Moreover, it was also found that the power law index was constantly increased as the temperature increased. Meanwhile, a similar trend was observed for swelling ratio, whereby it also increased with increasing temperature. It was also observed that changes in the die temperatures would result in the formation of obvious bubble like surface morphology, and it became more prominent when the temperature was lowered.

ISSN 1511-3701

e-ISSN 2231-8542

Article ID


Download Full Article PDF

Share this article

Recent Articles