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Control experiments with cellulose acetate
Detailed study of homogeneous films derived from galactose
ASYMMETRIC HIGHTHROUGHPUT MEMBRANES FROM Page
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1:6 COPOLYMER FILM acetonated acetonated form active layer alkali assessment behaviour Biebrich Scarlet casting solvent cell cellulose acetate films cellulose acetate membrane chloroform concentration Concn COPOLYMER FILM Fig Copolymerisation copolymerization cross-linking decrease defect pores degree of swell derivative dimethyl dimethylformamide dl/gm dope ethanol Expts Faint uniform staining FILM CAST flow rate formamide formic acid galactose methacrylate copolymer galls/ft galls/ft2/day given in fig given in table glass heating high pressure high throughput membranes homogeneous films hours at pH hydrophilic monomers hydrophobic hydroxyl immersion initially magnesium perchlorate magnesium sulphate rejection methoxyethanol methyl methacrylate Millipore mins molecular weight Natrosol 250G observed obtained osmotic pressure polymer polymerisation range reduced viscosity rejection characteristics result reverse osmosis salt rejection sample scaled-up throughput Sharpies sodium chloride rejection soluble solvent structure subsequent thickness trapped solvent treatment tt tl tt tt tt VINYL PYRROLIDONE viscosity water content water flux yield zinc chloride