Interfacial interaction of clay with binary blends of polyamide 6 with High-Density Polyethylene (HDPE) and HDPE-graft-acrylic acid studied by Positron Annihilation Lifetime Spectroscopy
by Yan Zhu, Zhengping Fang, Yuzhen Xu, Lifang Tong
International Journal of Materials and Product Technology (IJMPT), Vol. 37, No. 3/4, 2010

Abstract: Positron Annihilation Lifetime Spectroscopy (PALS) has been utilised to investigate the free-volume properties of polyamide 6 (PA-6)/HDPE, PA-6/HDPE-graft-acrylic acid (PEAA) and their nanocomposites with organo-clay (Oclay). There is a great difference in the average size of free-volume holes (R) and the fractional free-volume (f_v) of PA-6 and HDPE owing to their different polarity. And the variations of R and f_v as functions of Oclay content are different between two blends. In PA-6/HDPE system, when added 1.2 per hundred resin (phr) and 2.4 phr Oclay, R and f_v increased slightly, while in PA-6/PEAA system, R and f_v decreased. The complicated relationship between the free-volume and the Oclay content is due to the interaction effect of Oclay on blends' interface.

Online publication date: Wed, 03-Feb-2010

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