Preparation of urea functionalized carbon nanotubes

Sean M. Ramirez, Timothy Edward Long

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The incorporation of carbon nanotubes (CNTs) within polymer matrices has emerged as an area of intense nanocomposite research, which is focused on developing polymeric materials with enhanced mechanical, electrical, and thermal properties. Multi-walled carbon nanotubes (MWNT) were oxidized in nitric acid to produce acid sites decorating the NT surface at a concentration of 1.30 mmol COOH groups/g MWNT. These were then converted to acid halides and reacted with various diamines of different spacer lengths. The amines moieties were reacted with octadecyl isocyanate to produce urea modified MWNTs (0.32 mmol Urea/g MWNT). Spacer groups were introduced between the urea group and CNT surface to disperse CNT-CNT aggregation. These urea functionalized CNTs were dispersed in poly(urethanes) and poly(urethane ureas) in order to study the influence of hydrogen bonding moieties (ureas) on the CNT surface and polymer matrix. MWNTS were characterized with thermogravimetric analysis, X-ray photoelectron spectroscopy, and scanning electron microscopy.

Original languageEnglish
Title of host publicationAmerican Chemical Society - 237th National Meeting and Exposition, ACS 2009, Abstracts of Scientific Papers
Publication statusPublished - 2009 Dec 1
Externally publishedYes
Event237th National Meeting and Exposition of the American Chemical Society, ACS 2009 - Salt Lake City, UT, United States
Duration: 2009 Mar 222009 Mar 26

Other

Other237th National Meeting and Exposition of the American Chemical Society, ACS 2009
CountryUnited States
CitySalt Lake City, UT
Period09/3/2209/3/26

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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    Ramirez, S. M., & Long, T. E. (2009). Preparation of urea functionalized carbon nanotubes. In American Chemical Society - 237th National Meeting and Exposition, ACS 2009, Abstracts of Scientific Papers