Extrusion of PE/PS blends with supercritical carbon dioxide. (polyethylene/polystyrene): An article from: Polymer Engineering and Science
Book Details
PublisherSociety of Plastics Engineers, Inc.
ISBN / ASINB00098A7EM
ISBN-13978B00098A7E0
MarketplaceFrance 🇫🇷
Description
This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on July 1, 1998. The length of the article is 4391 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: The effects of dissolved supercritical carbon dioxide on the viscosity and morphological properties were investigated for polyethylene/polystyrene blends in a twin-screw extruder. The viscosities of the blend/C[O.sub.2] solutions were measured using a wedge die mounted on the extruder. A considerable reduction of viscosity was found when C[O.sub.2] was dissolved in the blend. It was observed that the dissolution of C[O.sub.2] into PE/PS blends, regardless of the C[O.sub.2] content used, led to decreased shear thinning behavior resulting in an increase of the power law index from 0.29 to 0.34. The cell structures of foamed PE/PS blends showed a typical dependence of pressure and C[O.sub.2] concentration, with higher operating pressures and C[O.sub.2] content leading to a smaller cell size. Also, it was noted that the size of the dispersed PS phase in the PE/PS phase blends decreased by increasing the C[O.sub.2] concentration, and that the dispersed PS phase domains were highly elongated in the direction normal to the cell radius.
Citation Details
Title: Extrusion of PE/PS blends with supercritical carbon dioxide. (polyethylene/polystyrene)
Author: Minhee Lee
Publication:Polymer Engineering and Science (Refereed)
Date: July 1, 1998
Publisher: Society of Plastics Engineers, Inc.
Volume: v38 Issue: n7 Page: p1112(9)
Distributed by Thomson Gale
From the author: The effects of dissolved supercritical carbon dioxide on the viscosity and morphological properties were investigated for polyethylene/polystyrene blends in a twin-screw extruder. The viscosities of the blend/C[O.sub.2] solutions were measured using a wedge die mounted on the extruder. A considerable reduction of viscosity was found when C[O.sub.2] was dissolved in the blend. It was observed that the dissolution of C[O.sub.2] into PE/PS blends, regardless of the C[O.sub.2] content used, led to decreased shear thinning behavior resulting in an increase of the power law index from 0.29 to 0.34. The cell structures of foamed PE/PS blends showed a typical dependence of pressure and C[O.sub.2] concentration, with higher operating pressures and C[O.sub.2] content leading to a smaller cell size. Also, it was noted that the size of the dispersed PS phase in the PE/PS phase blends decreased by increasing the C[O.sub.2] concentration, and that the dispersed PS phase domains were highly elongated in the direction normal to the cell radius.
Citation Details
Title: Extrusion of PE/PS blends with supercritical carbon dioxide. (polyethylene/polystyrene)
Author: Minhee Lee
Publication:Polymer Engineering and Science (Refereed)
Date: July 1, 1998
Publisher: Society of Plastics Engineers, Inc.
Volume: v38 Issue: n7 Page: p1112(9)
Distributed by Thomson Gale
