Gross melt fracture of polyethylene. II: Effects of molecular structure.: 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 March 1, 2002. The length of the article is 2924 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 effect of molecular structure (MW, MWD and LCB) on the critical tensile stress ([[sigma].sub.c]) for the onset of gross melt fracture (OGMF), proposed in Part I(1) as a material-dependent criterion for fracture, was determined for a group of polyethylenes varying in structure. These included linear low and high-density polyethylenes and several materials produced using metallocene and constrained geometry catalysts. It was found that the critical stress is independent of [M.sub.w], for constant polydispersity but increases with increasing long chain branching and polydispersity. The addition of boron nitride particles had no effect on the [[sigma].sub.c] up to a level of 0.5% by weight.

Citation Details
Title: Gross melt fracture of polyethylene. II: Effects of molecular structure.
Author: Seungoh Kim
Publication:Polymer Engineering and Science (Refereed)
Date: March 1, 2002
Publisher: Society of Plastics Engineers, Inc.
Volume: 42 Issue: 3 Page: 495(9)

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