2008 NSTI Nanotechnology Conference and Trade Show - Nanotech 2008 - 11th Annual

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TechConnect Summit
Clean Technology 2008

Thermoplastic Polymer Nanocomposite Based on Cellulose Crystals and Nylon 6/6- 6

A. Kiziltas, D.J. Gardner, Y. Han, C. West
University of Maine- AEWC, US

Keywords:
thermoplastic nanocomposite, cellulose crystals, nylon 6/6-6, dynamic mechanical thermal properties, mechanical properties and morphology

Abstract:
Naturally derived organic nanophases such as cellulose crystals have received considerable attention recently because of their unique properties compared to inorganic materials: high specific strength and modulus, low cost / high-volume applications, low density compared to composites reinforced by inorganic materials, low energy consumption, easy processability, renewable nature and possibility of recycling. In our studies, thermoplastic nanocomposite materials were prepared from nylon 6/6-6 as the matrix and cellulose crystals as the filler phase. The thermoplastic nanocomposites were prepared with different formulations of cellulose crystals contents, up to 40 wt%. The results showed that good mechanical properties observed seem to be because of not only the size and stiffness of the cellulose crystals but also to the interaction of the cellulose crystals/thermoplastic matrix and the formation of cellulose crystal clusters within the thermoplastic matrix. The viscoelastic properties such as polymer damping peaks (tan ) storage modulus (E’) and loss modulus (E’’) of each formulation were recorded as a function of temperature and frequency using a dynamic mechanical thermal analyzer (DMTA). The morphology of cellulose crystals and nylon 6/6-6 as well as composite micro structure was studied using a scanning electron microscope (SEM) and atomic force microscope (AFM)


Nanotech 2008 Conference Program Abstract