Journal of Applied Polymer Science, Vol.98, No.3, 1135-1141, 2005
Effect of temperature on the dispersion properties of polypropylene fibers
A Biolar PI polarizing interference microscope (a Pluta microscope) attached to a special hot stage was used to study the influence of temperature on the dispersion properties of polypropylene fibers with different deniers (6 D and 90 mm, 6 D and 150 mm, and 12 D and 150 mm) over the temperature range of 30-50 degrees C. This study was carried out with a variable-wavelength interferometry technique. Constant A of Cauchy's dispersion formula and the oscillation and dispersion energies for light vibrating parallel and perpendicularly to the fiber axis were determined at different temperatures. Microinterferograms are given for illustration. (c) 2005 Wiley Periodicals, Inc.