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Biocidal polymers active by contact. V. Synthesis of polysiloxanes with biocidal activity
Author(s) -
Sauvet G.,
Dupond S.,
Kazmierski K.,
Chojnowski J.
Publication year - 2000
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(20000222)75:8<1005::aid-app5>3.0.co;2-w
Subject(s) - cationic polymerization , polymer chemistry , copolymer , chemistry , polymer , contact angle , aqueous solution , polymerization , materials science , organic chemistry , composite material
Polysiloxanes with 3‐(alkyldimethylammonio)propyl pendant groups were synthesized by quaternization of n ‐octyldimethylamine or n ‐dodecyldimethylamine with linear polysiloxanes containing 3‐chloropropyl groups and/or 3‐bromopropyl groups attached to silicon atoms. The precursor polysiloxanes, poly[(3‐chloropropyl)methylsiloxane] homopolymer and various copolymers containing (3‐halogenopropyl)methylsiloxane and dimethylsiloxane units, were obtained by equilibrium cationic polymerization of linear and cyclic siloxanes with (3‐halogenopropyl)methylsiloxane units. The polysiloxanes bearing quaternary ammonium salts (QAS) showed bactericidal activity against bacteria such as Escherichia coli and Aeromonas hydrophila when incorporated in a polysiloxane network. The activity was retained after 66 days of immersion in water. The QAS‐containing polysiloxanes are also active in aqueous solution. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 75: 1005–1012, 2000