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Grafted carbon fibers and their physico‐chemical properties. Part II. Grafting of liquid crystalline methacrylic monomers onto carbon fibers and the influence of an applied voltage to the carbon fiber embedded in a liquid crystalline matrix
Author(s) -
Bismarck A.,
Pfaffernoschke M.,
Song B.,
Springer J.
Publication year - 1999
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19990314)71:11<1893::aid-app20>3.0.co;2-z
Subject(s) - materials science , polymer , monomer , grafting , scanning electron microscope , fiber , carbon fibers , wetting , chemical engineering , liquid crystal , polymer chemistry , composite material , optoelectronics , composite number , engineering
Results of grafting reactions of a liquid crystalline (lc) monomer onto carbon fiber surfaces are presented and compared with results of noncovalently bonded lc polymer, which is proved reproducible by scanning electron microscopy. Electro‐optical investigations under a polarizing microscope hints of the possibility of changing lc polymer and lc low molecular mass matrix molecules properties by applying a certain voltage to the carbon fibers. Wetting and electrokinetic measurements were performed and correlated with grafting reaction parameters. Those investigations revealed a nearly complete coverage of the carbon fiber surfaces by lc polymers. These measurements are suitable to characterize carbon fibers modified by grafted or coated polymers. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 71: 1893–1904, 1999