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PNIPAAM Grafted Polymeric Monoliths Synthesized by the Reactive Gelation Process and their Swelling/Deswelling Characteristics
Author(s) -
Mittal Vikas,
Matsko Nadejda B.,
Butté Alessandro,
Morbidelli Massimo
Publication year - 2008
Publication title -
macromolecular reaction engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.37
H-Index - 32
eISSN - 1862-8338
pISSN - 1862-832X
DOI - 10.1002/mren.200700052
Subject(s) - divinylbenzene , copolymer , atom transfer radical polymerization , swelling , polymer chemistry , styrene , polymerization , materials science , radical polymerization , surface modification , polymer , chemical engineering , chain transfer , adsorption , grafting , precipitation polymerization , acrylic acid , chemistry , organic chemistry , composite material , engineering
The production of macroporous monoliths functionalized with a thermo‐responsive polymer (PNIPAAM) is described. The surface functionalization was achieved by copolymerization of acrylic end capped atom transfer radical polymerization initiator (BPOEA) with divinylbenzene with or without styrene. Monoliths were generated by swelling them with styrene, BPOEA and divinylbenzene followed by gelation with salt and post polymerization. Subsequent grafting of these monoliths with PNIPAAM was achieved by atom transfer radical polymerization and their swelling deswelling characteristics quantified. The grafted monoliths provide a unique chromatographic stationary phase where adsorption/desorption can be driven by the use of temperature only.