Summary
Measurements of both apparent molecular weight and second virial coefficient of solutions of styrene-4-vinylpyridine copolymer in ethyl benzoate containing varying concentrations of methyl methacrylate-methacrylic acid copolymer isorefractive with ethyl benzoate were carried out by low angle laser light scattering. The apparent molecular weight depended very little on the acidic copolymer concentration. The second virial coefficient first decreased rapidly, then increased and finally tends to level off as the acidic copolymer concentration was raised. Great association is observed when the visible polymer is in excess.
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Djadoun, S. Association between acidic and basic copolymers by low angle laser light scattering photometry. Polymer Bulletin 7, 607–614 (1982). https://doi.org/10.1007/BF00256094
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DOI: https://doi.org/10.1007/BF00256094