Influence of initial mixing methods on melt-extruded single-walled carbon nanotube--polypropylene nanocomposites.(Report): An article from: Polymer Engineering and Science
Book Details
PublisherSociety of Plastics Engineers, Inc.
ISBN / ASINB0043U1QDS
ISBN-13978B0043U1QD6
AvailabilityAvailable for download now
Sales Rank99,999,999
MarketplaceUnited States 🇺🇸
Description
This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on September 1, 2010. The length of the article is 7530 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: We report the first direct comparison of melt-extruded polypropylene-single-walled carbon nanotube (PP/ SWNT) nanocomposites prepared by three different initial mixing methods. The standard deviation of the G-band intensity obtained using Raman mapping was found to be the best measure of dispersion uniformity in the extruded composites, and dispersion uniformity was found to generally correlate with rheological and thermal properties. For all three initial mixing methods, both unmodified and sidewall-functionalized purified SWNTs were evaluated. Surprisingly, in all cases, dode-cylated SWNTs prepared using the reductive alkylation method were less uniformly dispersed in the final composite than the unmodified SWNTs. The simplest process, dry blending, resulted in poor nanotube dispersion and only polymer crystallization was significantly affected by the presence of the nanotubes. A slightly more complex rotary evaporation process resulted in significantly more uniform dispersion and significant changes in rheological properties, polymer crystallization, and thermal stability. The most elaborate process tested, hot coagulation, enabled the most uniform dispersion and the greatest change in properties but also resulted in some polymer degradation. POLYM. ENG. SCI., 50:1831-1842, 2010. [c]2010 Society of Plastics Engineers
Citation Details
Title: Influence of initial mixing methods on melt-extruded single-walled carbon nanotube--polypropylene nanocomposites.(Report)
Author: Vinod K. Radhakrishnan
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: September 1, 2010
Publisher: Society of Plastics Engineers, Inc.
Volume: 50 Issue: 9 Page: 1831(12)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
From the author: We report the first direct comparison of melt-extruded polypropylene-single-walled carbon nanotube (PP/ SWNT) nanocomposites prepared by three different initial mixing methods. The standard deviation of the G-band intensity obtained using Raman mapping was found to be the best measure of dispersion uniformity in the extruded composites, and dispersion uniformity was found to generally correlate with rheological and thermal properties. For all three initial mixing methods, both unmodified and sidewall-functionalized purified SWNTs were evaluated. Surprisingly, in all cases, dode-cylated SWNTs prepared using the reductive alkylation method were less uniformly dispersed in the final composite than the unmodified SWNTs. The simplest process, dry blending, resulted in poor nanotube dispersion and only polymer crystallization was significantly affected by the presence of the nanotubes. A slightly more complex rotary evaporation process resulted in significantly more uniform dispersion and significant changes in rheological properties, polymer crystallization, and thermal stability. The most elaborate process tested, hot coagulation, enabled the most uniform dispersion and the greatest change in properties but also resulted in some polymer degradation. POLYM. ENG. SCI., 50:1831-1842, 2010. [c]2010 Society of Plastics Engineers
Citation Details
Title: Influence of initial mixing methods on melt-extruded single-walled carbon nanotube--polypropylene nanocomposites.(Report)
Author: Vinod K. Radhakrishnan
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: September 1, 2010
Publisher: Society of Plastics Engineers, Inc.
Volume: 50 Issue: 9 Page: 1831(12)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
