Polymethylmethacrylate-methacrylic methacrylate, graft copolymer

The "comb" dispersing agent was a graft copolymer of polymethylmethacrylate-methacrylic acid (methoxypolyethylene oxide methacrylate) supplied by ICI Paints Division (Slough) and used as received. The exact molecular weight of the polymer is not known, but it is ejqpected to be in the region of 20-30,000 (as indicated by ICI Paints Division). The of the polyethylene chains was 750. 

An alternative (and perhaps more efficient) polymeric snrfactant is the amphipathic graft copolymer consisting of a polymeric backbone B (polystyrene or polymethylmethacrylate) and several A chains (teeth) snch as polyethylene oxide [4], This graft copolymer is sometimes referred to as a comb stabilizer. This copolymer is nsnally prepared by grafting a macromonomer such methoxy polyethylene oxide methacrylate with polymethylmethacrylate. The grafting onto technique has also been nsed to synthesize polystyrene-polyethylene oxide graft copolymers. 

ACPA azobis(4-cyanopentanoic acid) AIBN azobis isobutyronitrile) BPO benzoyl peroxide DVB divinyl benzene, EGA 2-ethylcyano-acrylate HPC hydroxypropyl cellulose MMA methyl methacrylate PAAc polyacrylic acid PEI polyethyleneimine, PEO/PPO polyethylene oxide/polypyropylene oxide copolymer PVME polyvinylmethylether PVP polyvinylpyrrolidone K-30 DMSO dimethylsulfoxide PGA polyglutaraldehyde CMS chloromethylstyrene PMMA-g-OSA polymethylmethacrylate grafted oligostearic acid. 

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