Formation of a polyetheramide triblock copolymer by reactive extrusion; process and properties.: An article from: Polymer Engineering and Science
Book Details
Author(s)Byung H. Lee, James L. White
PublisherSociety of Plastics Engineers, Inc.
ISBN / ASINB0008FJ8UK
ISBN-13978B0008FJ8U0
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 August 1, 2002. The length of the article is 5857 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 synthesis of polyetheramide, containing poly(tetramethylene ether) (PTMEG) as the soft segment phase and polylactams as the hard phase was carried out in a Leistritz modular intermeshing counter-rotating twin-screw extruder in a one-step, solvent-free process. No by-product such as carbon dioxide or [H.sub.2]O is formed during the reaction procedure. Isocyanate-terminated telechelic PTMEG was premixed with caprolactam, and these were fed into the twin-screw extruder to form the polyetheramide triblock copolymer. This triblock copolymer has not been previously polymerized in a twin-screw extruder or continuous mixer. Subsequent to polymerization, the copolymer and PA6 homopolymer were also melt-spun into fibers. Molecular weights and molecular weight distributions were determined by GPC on trifluroacetylated samples. Thermal, rheological, mechanical, and structural properties were investigated. It appears that phase separation (arising from immiscibility between the polyether segment and the polyamide segm ent as the reaction proceeds) did not hinder the chemical reaction between the two reactants because of the intense mixing in the twin-screw extruder. The new triblock copolymer should have application as a rubber-toughened thermoplastic or thermoplastic elastomer depending upon the elastomer content.
Citation Details
Title: Formation of a polyetheramide triblock copolymer by reactive extrusion; process and properties.
Author: Byung H. Lee
Publication:Polymer Engineering and Science (Refereed)
Date: August 1, 2002
Publisher: Society of Plastics Engineers, Inc.
Volume: 42 Issue: 8 Page: 1710(14)
Distributed by Thomson Gale
From the author: The synthesis of polyetheramide, containing poly(tetramethylene ether) (PTMEG) as the soft segment phase and polylactams as the hard phase was carried out in a Leistritz modular intermeshing counter-rotating twin-screw extruder in a one-step, solvent-free process. No by-product such as carbon dioxide or [H.sub.2]O is formed during the reaction procedure. Isocyanate-terminated telechelic PTMEG was premixed with caprolactam, and these were fed into the twin-screw extruder to form the polyetheramide triblock copolymer. This triblock copolymer has not been previously polymerized in a twin-screw extruder or continuous mixer. Subsequent to polymerization, the copolymer and PA6 homopolymer were also melt-spun into fibers. Molecular weights and molecular weight distributions were determined by GPC on trifluroacetylated samples. Thermal, rheological, mechanical, and structural properties were investigated. It appears that phase separation (arising from immiscibility between the polyether segment and the polyamide segm ent as the reaction proceeds) did not hinder the chemical reaction between the two reactants because of the intense mixing in the twin-screw extruder. The new triblock copolymer should have application as a rubber-toughened thermoplastic or thermoplastic elastomer depending upon the elastomer content.
Citation Details
Title: Formation of a polyetheramide triblock copolymer by reactive extrusion; process and properties.
Author: Byung H. Lee
Publication:Polymer Engineering and Science (Refereed)
Date: August 1, 2002
Publisher: Society of Plastics Engineers, Inc.
Volume: 42 Issue: 8 Page: 1710(14)
Distributed by Thomson Gale
