| Functionalization of ethylene-propylene-diene terpolymer via the Alder Ene reaction.: An article from: Polymer Engineering and Science | Digitalby M.R. Thompson (Author), C. Tzoganakis (Author), G.L. Rempel (Author)
| List Price: | $5.95 | | | Available: | Available for download now |
| | Binding: | Digital | | Publisher: | Society of Plastics Engineers, Inc. | | Page Count: | 24 Pages | | Publication Date: | October 01, 1998 |
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Product Description
This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on October 1, 1998. The length of the article is 7007 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: An ethylene-propylene-diene rubber (EPDM), containing 5 wt% 5-ethylidene-2-norbornene, was functionalized with maleic anhydride through the Alder Ene reaction at temperatures above 200 [degrees] C in a co-rotating twin screw extruder. Characterization of the maleated product included FT-IR, 1H and 13C NMR, and GPC. The degree of functionalization was determined by infrared analysis and by the mechanical properties of an ionic network formed by neutralizing the maleated rubber with zinc oxide. Increased temperature and maleic anhydride reactant concentration were found to improve the extent of reaction. Several Lewis acid species (SnCl.sub.2] [center dot] 2[H.sub.2]O, Ru[Cl.sub.n] [center dot]x[H.sub.2]O and Al[Cl.sub.3]) were tested as catalysts, and they were found to have a small effect on the degree of functionalization. This effect improved with reduced acid concentration. Among the Lewis acids examined, Al[Cl.sub.3] gave rise to the greatest improvement of succinyl anhydride incorporation into the rubber.Citation DetailsTitle: Functionalization of ethylene-propylene-diene terpolymer via the Alder Ene reaction.Author: M.R. ThompsonPublication: Polymer Engineering and Science (Refereed)Date: October 1, 1998Publisher: Society of Plastics Engineers, Inc.Volume: 38 Issue: 10 Page: 1694(1)Distributed by Thomson Gale |
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