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Chemical modification and surface reactions on carbon fibers studied by SERS
Author(s) -
Xu Bing,
Lu Yun
Publication year - 2006
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1567
Subject(s) - maleic anhydride , raman spectroscopy , surface modification , polyimide , fiber , carbon fibers , nitric acid , inert , materials science , chemical engineering , chemistry , composite material , polymer chemistry , layer (electronics) , organic chemistry , polymer , composite number , physics , optics , copolymer , engineering
Carbon fibers were modified by reacting with maleic anhydride (MA) and oxidation in nitric acid to alter their inert nature. Bismaleimide, acting as a model compound of polyimide, was chosen to react with the surface‐active carbon fibers. Surface‐enhanced Raman scattering was performed by chemically depositing Ag colloids on different carbon fiber samples, including raw, modified and post‐reaction materials. The obtained enhanced Raman spectra explained the surface chemistry of the different carbon fiber samples and their further interaction with bismaleimide. The results could serve as a guide for the design of functional groups on carbon fibers and the manufacture of the carbon‐fiber‐reinforced polyimide matrix composites. Moreover, the effect of different laser powers and laser irradiation times on the carbon fiber surface was studied and is discussed. Copyright © 2006 John Wiley & Sons, Ltd.