Composite droplets with core/shell morphologies prepared from HDPE/PS/PMMA ternary blends by twin-screw extrusion.: An article from: Polymer Engineering and Science
Book Details
PublisherSociety of Plastics Engineers, Inc.
ISBN / ASINB00082PBR2
ISBN-13978B00082PBR6
AvailabilityAvailable for download now
MarketplaceUnited States 🇺🇸
Description
This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on April 1, 2004. The length of the article is 3707 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: Ternary blends of PS and PMMA in a PE matrix were prepared by twin-screw extrusion to investigate the core/shell encapsulation phenomenon in the composite droplet. The PS was found to encapsulate the PMMA to form composite droplets within the PE matrix as expected from the spreading coefficient theory. The effects of dispersed phase concentration, viscosity ratio, feeding sequence and twin-screw operating conditions were investigated. The blend morphology was observed by scanning electron microscopy after selective extraction of either PS or PMMA, and average core and composite droplet diameters were determined by image analysis. Although it is known that the structure of composite droplet blends can be substantially altered through control of the volume fraction of the components in the dispersed phase, this study demonstrates that blends with a 1:1 composite droplet volume fraction are relatively stable to large variations in the minor phase viscosities and processing conditions. Twin-screw extrusion thus provides a highly robust technique for the melt processing of blends possessing composite droplet morphologies. Polym. Eng. Sci. 44:749-759. 2004.
Citation Details
Title: Composite droplets with core/shell morphologies prepared from HDPE/PS/PMMA ternary blends by twin-screw extrusion.
Author: Kiril P. Tchomakov
Publication:Polymer Engineering and Science (Refereed)
Date: April 1, 2004
Publisher: Society of Plastics Engineers, Inc.
Volume: 44 Issue: 4 Page: 749(11)
Distributed by Thomson Gale
From the author: Ternary blends of PS and PMMA in a PE matrix were prepared by twin-screw extrusion to investigate the core/shell encapsulation phenomenon in the composite droplet. The PS was found to encapsulate the PMMA to form composite droplets within the PE matrix as expected from the spreading coefficient theory. The effects of dispersed phase concentration, viscosity ratio, feeding sequence and twin-screw operating conditions were investigated. The blend morphology was observed by scanning electron microscopy after selective extraction of either PS or PMMA, and average core and composite droplet diameters were determined by image analysis. Although it is known that the structure of composite droplet blends can be substantially altered through control of the volume fraction of the components in the dispersed phase, this study demonstrates that blends with a 1:1 composite droplet volume fraction are relatively stable to large variations in the minor phase viscosities and processing conditions. Twin-screw extrusion thus provides a highly robust technique for the melt processing of blends possessing composite droplet morphologies. Polym. Eng. Sci. 44:749-759. 2004.
Citation Details
Title: Composite droplets with core/shell morphologies prepared from HDPE/PS/PMMA ternary blends by twin-screw extrusion.
Author: Kiril P. Tchomakov
Publication:Polymer Engineering and Science (Refereed)
Date: April 1, 2004
Publisher: Society of Plastics Engineers, Inc.
Volume: 44 Issue: 4 Page: 749(11)
Distributed by Thomson Gale
