Aqueous size exclusion chromatography of random, diblock, and ABC triblock methacrylic polyampholytes
Date
1996Source
Journal of colloid and interface scienceVolume
182Issue
2Pages
326-329Google Scholar check
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Aqueous size exclusion chromatography (SEC) at 1 M KCl and pH 8.5 was employed to probe the aggregation behavior of methacrylic polyampholytes. In agreement with earlier results obtained by light scattering techniques, shorter retention times were measured for the triblocks consistent with larger hydrodynamic size and, therefore, chain aggregation into micellar structures the two random terpolymers and the diblock polyampholyte showed no aggregation behavior as their retention times corresponded closely to the expected single-chain molecular weights. Micellar aggregation numbers were estimated to be within the range from 10 to 40.
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