Application of Rheology on Evaluating of the Morphology of PA/PE/Clay Blend Nanocomposites

سال انتشار: 1390
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 1,927

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شناسه ملی سند علمی:

PPSRC2011_367

تاریخ نمایه سازی: 30 بهمن 1390

چکیده مقاله:

The main objective of the present work was to use linear viscoelastic properties in evaluating of the morphology of the clay and its partitioning in PA/PE/Clay blend nanocomposites. Using the rheological analysis, it was concluded that the clay can be intercalated in PA phase leading to form a three dimensional network, while it showed no affinity to PE which was not also improved using PE-g-MA compatibilizer. These results were confirmed by XRD analysis. Using rheological and XRD analysis it was shown that the clay exhibited higher dispersion in PA/PE blends than that in pure PA. It was attributed to the detachment of intercalated clay layers due to the stress transfer of PE particles and deformation flow field created between PE particles, leading to formation of stronger network. The presence of PE-g-MA further enhanced the clay dispersion in the blend and increased its affinity to PE particles, which let the clay layers to be located preferentially near the blend interface. While the results of XRD were not able to accurately assess the morphology, using rheological analysis it was predicted that if the clay is first compounded with dispersed PE phase (PE+PE-g-MA), the clay could not leave the PE phase but PA diffuses to the composite droplets of PE/Clay to form phase within phase within phase morphology. SEM and TEM analyses confirmed the reliability of the predicted morphology. It was demonstrated that the rheological studies has a reliable sensitivity to the clay dispersion, its localization and phase morphology of blend nanocomposites.

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نویسندگان

s Malmir

Institute of Polymeric Materials, Polymer Engineering Department, Sahand University of Technology, Sahand New Town, Tabriz Iran P.C:۵۱۳۳۵-۱۹۹۶

m Hemmati

Research Institute of Petroleum Industries, RIPI, Tehran, Iran

M.K Razavi Aghjeh

Institute of Polymeric Materials, Polymer Engineering Department, Sahand University of Technology, Sahand New Town, Tabriz Iran P.C:۵۱۳۳۵-۱۹۹۶

r Ahmadi Tehrani

Institute of Polymeric Materials, Polymer Engineering Department, Sahand University of Technology, Sahand New Town, Tabriz Iran P.C:۵۱۳۳۵-۱۹۹۶

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