Polymer Engineering Faculty Research

Title

Effect of Processing Conditions on the Development of Morphology in Clay Nanoparticle Filled Nylon 6 Fibers

Document Type

Article

Publication Date

Fall 9-17-2002

Abstract

The effect of melt temperature on the phase behavior and preferential orientation development in Nylon 6/montmorillonite nanocomposites were investigated at melt spinning temperatures ranging from 230° to 250°C. The fibers were found to exhibit mostly γ crystalline form that is typical of Nylon 6 filled with montmorillonite nanoparticles. At higher take-up speeds α-crystals begin to appear in the crystalline phase. The presence of nanoparticles was found to impart substantial chain orientation levels even at low to moderate take up speeds reaching a plateau at moderate take up speeds. This was attributed to the increased spin line stress in the presence of nanoparticles that increase the overall viscosity due to their large contact areas with the polymer chains. This increased spinline tension was found to cause fiber breakup at moderate speeds. Increasing melt temperature from 230° to 250°C alleviated this problem.

Publication Title

Macromolecular Symposia

Volume

185

Issue

1

First Page

259

Last Page

276

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