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Modification of Polyacrylonitrile Particles and Grafted Films with Oxazolines
Author(s) -
Cabrera Andrés,
Böhme Liz M.,
SchmidtNaake Gudrun
Publication year - 2005
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200400340
Subject(s) - polyacrylonitrile , oxazoline , nitrile , thermogravimetric analysis , polymer chemistry , fourier transform infrared spectroscopy , chemistry , acrylonitrile , trifluoromethanesulfonate , differential scanning calorimetry , grafting , surface modification , copolymer , materials science , organic chemistry , polymer , chemical engineering , catalysis , physics , engineering , thermodynamics
Summary: Oxazoline functionalities were introduced onto the surface of polyacrylonitrile particles and polyacrylonitrile‐grafted films by the catalyzed reaction of a substituted aminoalcohol with the nitrile groups. The resulting oxazoline group was reacted with methyl triflate to use the resulting oxazolinium salt as initiator for the ring opening grafting of 2‐ethyl‐2‐oxazoline. The products were characterized with Fourier transform infrared spectroscopy (FTIR), elemental analysis, differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The modification of polyacrylonitrile with the substituted aminoalcohol achieves high conversions. Conversely, the amount of grafted 2‐ethyl‐2‐oxazoline is low. The results show that controlled levels of 2‐oxazolines or polyoxazolines can be incorporated onto the surface of polyacrylonitrile.Reaction of a nitrile group to form an oxazoline functionality.