In-line color monitoring of polymers during extrusion using a charge coupled device spectrometer: color changeovers and residence time distributions.: An article from: Polymer Engineering and Science

This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on February 1, 2003. The length of the article is 5467 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the author: A fiber-optic-assisted, charge-coupled device spectrometer was used to monitor the color of molten polymer concentrates during extrusion. Color coordinates L *, a * and b * were calculated from each of the reflectance spectra as polyethylene color concentrate was replaced by a purge material and as the purge material was replaced by another color concentrate. A method of calculating replacing component residence time distributions and component washout residence time distributions from the spectra was developed and applied. Results with a red and a blue concentrate showed that dimensionless time (time/average residence time) superimposed both residence time distributions and color coordinate variations during changeover from two different extruder screw speeds.

Citation Details
Title: In-line color monitoring of polymers during extrusion using a charge coupled device spectrometer: color changeovers and residence time distributions.
Author: C. Gilmor
Publication:Polymer Engineering and Science (Refereed)
Date: February 1, 2003
Publisher: Society of Plastics Engineers, Inc.
Volume: 43 Issue: 2 Page: 356(13)

Distributed by Thomson Gale