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Mechanochemical modification of silica with poly(1‐vinyl‐2‐pyrrolidone) by grinding in a stirred media mill
Author(s) -
A. Voronov,
A. Kohut,
A. Synytska,
W. Peukert
Publication year - 2007
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/app.25684
Subject(s) - materials science , grinding , polymer , chemical engineering , polymerization , nanocomposite , colloidal silica , surface modification , nanoparticle , porosity , self healing hydrogels , membrane , polymer chemistry , composite material , chemistry , nanotechnology , engineering , coating , biochemistry
Abstract The polymerization of 1‐vinyl‐2‐pyrrolidone (VP) mechanochemically initiated by grinding silica was investigated in a wet stirred media mill. The polymerization itself proceeds from the silica grinding without any additional initiator. We have found that the amount of grafted polymer increases with an increase in total ground silica surface. The suspension of polymer‐modified silica nanoparticles showed high colloidal stability in water because of the appearance of grafted hydrophilic PVP on the surface during the reactive grinding. Because the nanoparticles SiO 2 ‐ graft ‐PVP are biocompatible, the developed polymer nanocomposite material can be of particular interest for the performance of membranes and for the fabrication of biocompatible hydrogels with enhanced mechanical properties and porosity. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 104: 3708–3714, 2007