Properties evaluation of the membranes synthesized with castor oil polyurethane and polyaniline.: An article from: Polymer Engineering and Science
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PublisherThomson Gale
ISBN / ASINB000KQGP76
ISBN-13978B000KQGP71
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This digital document is an article from Polymer Engineering and Science, published by Thomson Gale on October 1, 2006. The length of the article is 2815 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: Polymeric membranes for electrodialysis, fuel cells, and other purposes with specific characteristics have been the focus of innumerable researches. The aim of this work was to evaluate membranes of the sulfonated polyaniline and polyurethane, obtained in the presence of the former, regarding its mechanical and electrical properties. Polyurethane (PU) was prepared from castor oil and 4-4-diciclohexilmethane isocyanate (HMDI). Polyaniline was synthesized by chemical oxidation, as described in the literature, and was sulfonated with chlorosulfonic acid in dichloroethane. Solution membranes were prepared by mixing sulfonated polyaniline (SPAN) and polyaniline doped with p-toluene sulfonic acid (PAni[.sub.TSA]) with castor oil and further HMDI. The obtained products were characterized by FTIR, TGA, and DMA. The membrane FTIR brought out the characteristic peaks of PU and polyanilines (TSA e sulfonated), and TGA curve showed a maximum decomposition rate at 350[degrees]C, quite different of the polyaniline ones. Nevertheless the SPAN/PU membrane showed very good stability until 250[degrees]C. The loss modulus curves show that there was an increase in the PU glass transition temperature with the addition of PAni and SPAN due to the their interaction with the PU chains. POLYM. ENG. SCI., 46:1485-1489, 2006. [c] 2006 Society of Plastics Engineers
Citation Details
Title: Properties evaluation of the membranes synthesized with castor oil polyurethane and polyaniline.
Author: F.D.R. Amado
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: October 1, 2006
Publisher: Thomson Gale
Volume: 46 Issue: 10 Page: 1485(5)
Distributed by Thomson Gale
From the author: Polymeric membranes for electrodialysis, fuel cells, and other purposes with specific characteristics have been the focus of innumerable researches. The aim of this work was to evaluate membranes of the sulfonated polyaniline and polyurethane, obtained in the presence of the former, regarding its mechanical and electrical properties. Polyurethane (PU) was prepared from castor oil and 4-4-diciclohexilmethane isocyanate (HMDI). Polyaniline was synthesized by chemical oxidation, as described in the literature, and was sulfonated with chlorosulfonic acid in dichloroethane. Solution membranes were prepared by mixing sulfonated polyaniline (SPAN) and polyaniline doped with p-toluene sulfonic acid (PAni[.sub.TSA]) with castor oil and further HMDI. The obtained products were characterized by FTIR, TGA, and DMA. The membrane FTIR brought out the characteristic peaks of PU and polyanilines (TSA e sulfonated), and TGA curve showed a maximum decomposition rate at 350[degrees]C, quite different of the polyaniline ones. Nevertheless the SPAN/PU membrane showed very good stability until 250[degrees]C. The loss modulus curves show that there was an increase in the PU glass transition temperature with the addition of PAni and SPAN due to the their interaction with the PU chains. POLYM. ENG. SCI., 46:1485-1489, 2006. [c] 2006 Society of Plastics Engineers
Citation Details
Title: Properties evaluation of the membranes synthesized with castor oil polyurethane and polyaniline.
Author: F.D.R. Amado
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: October 1, 2006
Publisher: Thomson Gale
Volume: 46 Issue: 10 Page: 1485(5)
Distributed by Thomson Gale
