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Flow behavior of LDPE and its blends with LLDPE I and II: A comparative study

Abraham, Daniel and George, KE and Francis, DJ (1996) Flow behavior of LDPE and its blends with LLDPE I and II: A comparative study. In: Journal of Applied Polymer Science., 62 (1). pp. 59-65.

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Studies on melt rheological properties of blends of low density polyethylene (LDPE) with selected grades of linear low density polyethylene (LLDPE), which differ widely in their melt flow indices, are reported, The data obtained in a capillary rheometer are presented to describe the effects of blend composition and shear rate on flow behavior index, melt viscosity, and melt elasticity. In general, blending of LLDPE I that has a low melt flow index (2 g/10 min) with LDPE results in a decrease of its melt viscosity, processing temperature, and the tendency of extrudate distortion, depending on blending ratio. A blending ratio around 20-30% LLDPE I seems optimum from the point of view of desirable improvement in processability behavior. On the other hand, blending of LLDPE II that has a high melt flow index (10 g/10 min) with LDPE offers a distinct advantage in increasing the pseudoplasticity of LDPE/LLDPE II blends.

Item Type: Journal Article
Publication: Journal of Applied Polymer Science.
Publisher: John Wiley & Sons
Additional Information: Copyright of this article belongs to John Wiley & Sons.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 21 Jul 2009 12:56
Last Modified: 22 Feb 2012 09:18
URI: http://eprints.iisc.ac.in/id/eprint/19588

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