| Thermal and morphological evaluation of very low density polyethylene/high density polyethylene blends.: An article from: Polymer Engineering and Science |  | Authors: Maria Luisa Arnal, Edgar Canizales, Alejandro J. Muller
Publisher: Society of Plastics Engineers, Inc.
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Format: HTML
Language: English (Published)
Media: Digital
Pages: 24
ASIN: B0008FMJ06
Publication Date: October 1, 2002
Availability: Available for download now
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This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on October 1, 2002. The length of the article is 7046 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: Blends of very low density polyethylene (VLDPE) and high density polyethylene (HDPE) were prepared by melt extrusion. These blends exhibit a tendency to phase segregate when they are slow cooled from the melt. If they are cooled at increasingly faster rates, a finite population of co-crystals can be isolated from the rest of the phase segregated material, indicating that this system is probably miscible in the melt but phase separates during cooling. Transmission electron microscopy observations are consistent with the blend melt miscibility since inter-lamellar mixing was clearly appreciated in the samples examined. Other effects arising from interactions between the polymers were the nucleation of VLDPE rich phase by HDPE rich phase, and a melting point depression of HDPE rich phase caused by a dilution effect exerted by molten VLDPE rich phase. After a successive self-nucleation and annealing thermal fractionation procedure is applied to the blends, phase separation dominates the behavior, although some sm all fraction of co-crystals was still present.
Citation Details
Title: Thermal and morphological evaluation of very low density polyethylene/high density polyethylene blends.
Author: Maria Luisa Arnal
Publication: Polymer Engineering and Science (Refereed)
Date: October 1, 2002
Publisher: Society of Plastics Engineers, Inc.
Volume: 42 Issue: 10 Page: 2048(16)
Distributed by Thomson Gale
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