POLY 119 |
| Low polydispersity high molecular weight polyacrylic acid is formed rapidly by the aqueous polymerization of acrylic acid initiated by an azo radical source (V-70) in the presence of cobalt complexes of tetra(3,5-disulfonatomesityl) porphyrin or tetra(4-sulfonatophenyl) porphyrin. Water soluble cobalt (II) porphyrins in conjunction with an azo radical source and acrylic acid (AA) react to produce organo-cobalt complexes that mediate the radical polymerization of AA in water. Linear increase in number average molecular weight with monomer conversion and relatively low polydispersity indicate the living character of the polymerization. |
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General Papers: Functional Materials
6:00 PM-8:00 PM, Sunday, August 19, 2007 BCEC -- Exhibit Hall - B2, Poster
Division of Polymer Chemistry |