Improving the exfoliation of layered silicate in a poly(ethylene terephthalate) matrix using supercritical carbon dioxide.(Report): An article from: Polymer Engineering and Science

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From the author: A technique for improving the exfoliation of organically modified layered silicate (OMLS) in a poly(ethylene terephthalate) (PET) matrix using super critical carbon dioxide (sc[CO.sub.2]) is compared to traditional direct melt blending. The process relies on the rapid expansion of a [sc[CO.sub.2]/OMLS] mixture directly into the second stage of a single screw extruder where the clay and sc[CO.sub.2] mixture is subsequently melt blended with the PET matrix. The simple, environmentally benign process results in a more highly delaminated system than traditional direct melt compounding. X-ray diffraction analysis is used to reveal improved clay morphologies and the resulting mechanical properties are examined. Rheology is used as a tool to draw conclusions about the effect that sc[CO.sub.2] has on reducing PET matrix degradation during processing. POLYM. ENG. SCI., 49:2329-2341, 2009. [C] 2009 Society of Plastics Engineers

Citation Details
Title: Improving the exfoliation of layered silicate in a poly(ethylene terephthalate) matrix using supercritical carbon dioxide.(Report)
Author: Joseph Samaniuk
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: December 1, 2009
Publisher: Society of Plastics Engineers, Inc.
Volume: 49 Issue: 12 Page: 2330(13)

Article Type: Report

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