Electrically conducting polypropylene/polyaniline-grafted-short glass fiber composites: microstructure and dynamic mechanical analysis.(Report): An article from: Polymer Engineering and Science
Book Details
PublisherSociety of Plastics Engineers, Inc.
ISBN / ASINB004MX5KTC
ISBN-13978B004MX5KT3
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MarketplaceUnited States 🇺🇸
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This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on February 1, 2011. The length of the article is 5300 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available immediately after purchase. You can view it with any web browser.
From the author: The thermal properties of isotactic polypropylene (iPP) reinforced with polyaniline-grafted-short glass fibers (PAn-g-SGF) at 10, 20, and 30 wt% concentration and iPP blended with 5 wt% PP-grafted-maleic anhydride (PP-gMA) and 30 wt% of PAn-g-SGF were investigated. iPP crystallizes into a spherulitic morphology, the microfiller promoted larger spherulite size and higher dynamic modulus, but the overall degree of crystallinity decreased as the concentration of PAn-g-SGF increased. The melting temperature, [T.sub.m], was not influenced by the microfiller. However, the crystallization temperature, [T.sub.c], as determined by DMA, first decreased reaching a minimum at ca. 20 wt%, and then increased, in contrast with [T.sub.c] determined by DSC, it increased as concentration increased. The initial reduction in [T.sub.c] observed by DMA seems to be associated with the crystallites growing from the microfiller into the matrix, the overall molecular dynamics then being less affected. On the other hand, increase in [T.sub.c] above 20 wt% concentration suggests that the percolation threshold could be responsible for these results. Addition of the maleic anhydride copolymer produced higher shear modulus, transition temperatures, and activation energy, suggesting higher interaction between microfiller and polymer matrix. POLYM. ENG. SCI., 51:254-263, 2011. [C]2010 Society of Plastics Engineers
Citation Details
Title: Electrically conducting polypropylene/polyaniline-grafted-short glass fiber composites: microstructure and dynamic mechanical analysis.(Report)
Author: Cintya Valerio-Cardenas
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: February 1, 2011
Publisher: Society of Plastics Engineers, Inc.
Volume: 51 Issue: 2 Page: 254(10)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
From the author: The thermal properties of isotactic polypropylene (iPP) reinforced with polyaniline-grafted-short glass fibers (PAn-g-SGF) at 10, 20, and 30 wt% concentration and iPP blended with 5 wt% PP-grafted-maleic anhydride (PP-gMA) and 30 wt% of PAn-g-SGF were investigated. iPP crystallizes into a spherulitic morphology, the microfiller promoted larger spherulite size and higher dynamic modulus, but the overall degree of crystallinity decreased as the concentration of PAn-g-SGF increased. The melting temperature, [T.sub.m], was not influenced by the microfiller. However, the crystallization temperature, [T.sub.c], as determined by DMA, first decreased reaching a minimum at ca. 20 wt%, and then increased, in contrast with [T.sub.c] determined by DSC, it increased as concentration increased. The initial reduction in [T.sub.c] observed by DMA seems to be associated with the crystallites growing from the microfiller into the matrix, the overall molecular dynamics then being less affected. On the other hand, increase in [T.sub.c] above 20 wt% concentration suggests that the percolation threshold could be responsible for these results. Addition of the maleic anhydride copolymer produced higher shear modulus, transition temperatures, and activation energy, suggesting higher interaction between microfiller and polymer matrix. POLYM. ENG. SCI., 51:254-263, 2011. [C]2010 Society of Plastics Engineers
Citation Details
Title: Electrically conducting polypropylene/polyaniline-grafted-short glass fiber composites: microstructure and dynamic mechanical analysis.(Report)
Author: Cintya Valerio-Cardenas
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: February 1, 2011
Publisher: Society of Plastics Engineers, Inc.
Volume: 51 Issue: 2 Page: 254(10)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
