| Effect of processing on the recyclability of nylon 66/poly(2,6 dimethyl-1,4 phenylene oxide) (PPO) alloys.: An article from: Polymer Engineering and Science |  | Authors: John J. Laverty, Thomas Ellis, John O'Gara, Sooho Kim
Publisher: Society of Plastics Engineers, Inc.
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Format: HTML
Language: English (Published)
Media: Digital
Pages: 19
ASIN: B00093UD0U
Publication Date: February 15, 1996
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 February 15, 1996. The length of the article is 5512 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 recyclability of two commercial nylon 66/PPO [poly(phenylene oxide)] alloys has been investigated by examining the effects of multiple and abusive melt processes upon the impact strength. The loss of performance associated with these exposures has been correlated, in one instance, with the thermal degradation of polybutadiene-based impact modifier. The degradation of the rubber has been quantified using an indirect measurement of rubber mobility obtained from the NMR free induction decay of mobile and rigid protons in the material. Substitution of the unsaturated rubber modifier with a saturated hydrocarbon resulted in improved recyclability. Both formulations provide evidence of changes in morphology related to instability of the dispersed PPO phase. The coalescence of PPO particles, evident in later stages of prolonged thermal exposure, appears to cause further loss of impact strength. Currently the chemical and/or physical changes responsible for the increase in average PPO particle size are not known. It is probable that the thermal stability of the compatibilizer, formed during the reactive extrusion manufacturing process, may be insufficient to provide a durable morphology for repeated recycling of these alloys.
Citation Details
Title: Effect of processing on the recyclability of nylon 66/poly(2,6 dimethyl-1,4 phenylene oxide) (PPO) alloys.
Author: John J. Laverty
Publication: Polymer Engineering and Science (Refereed)
Date: February 15, 1996
Publisher: Society of Plastics Engineers, Inc.
Volume: v36 Issue: n3 Page: p347(11)
Distributed by Thomson Gale
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