Preparation of urea functionalized carbon nanotubes

Sean M. Ramirez, Timothy E. Long

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


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 (US)
Title of host publicationAmerican Chemical Society - 237th National Meeting and Exposition, ACS 2009, Abstracts of Scientific Papers
StatePublished - 2009
Externally publishedYes
Event237th National Meeting and Exposition of the American Chemical Society, ACS 2009 - Salt Lake City, UT, United States
Duration: Mar 22 2009Mar 26 2009

Publication series

NameACS National Meeting Book of Abstracts
ISSN (Print)0065-7727


Other237th National Meeting and Exposition of the American Chemical Society, ACS 2009
Country/TerritoryUnited States
CitySalt Lake City, UT

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering


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