FT-IR measurement of emulsified cationic DMAEMA-MMA adsorption to calcium alginate.
The rate of adsorption of aqueous emulsions of DMAEMA-MMA copolymers to calcium alginate substrates was examined using ATR FT-IR spectroscopy. This work was undertaken as part of the development of a hybrid artificial pancreas. Aqueous DMAEMA-MMA copolymer emulsions containing < 25 mol% DMAEMA were slowly adsorbed to calcium alginate substrates; emulsions of 50 mol% DMAEMA-MMA copolymer were adsorbed rapidly to calcium alginate gels. The adsorption of 50 mol% DMAEMA-MMA copolymer emulsions to calcium alginate gels was attributed to electrostatic rather than simple van der Waals' attractive forces.
Lamberti
F V
FV
Department of Chemical Engineering and Applied Chemistry, University of Toronto, Ontario, Canada.
Sefton
M V
MV
D000327:Adsorption; D000464:Alginates / Q000493:pharmacokinetics*; D005583:Fourier Analysis; D020723:Glucuronic Acid; D006603:Hexuronic Acids; D008768:Methylmethacrylates / Q000493:pharmacokinetics*; D011108:Polymers / Q000493:pharmacokinetics*; D013055:Spectrophotometry, Infrared / Q000379:methods; D013499:Surface Properties
D000464:Alginates; D006603:Hexuronic Acids; D008768:Methylmethacrylates; D011108:Polymers; C035600:dimethylaminoethyl methacrylate-methylmethacrylate copolymer; D020723:Glucuronic Acid