Study of polymer complexes by size exclusion chromatography coupled with light scattering combination with fluorescence spectroscopy

Poly(methyl methacrylate) stereocomplexes prepared at different concentrati on in dilute tetrahydrofuran solutions were studied by size exclusion chrom atography coupled with refractive and light scattering detectors in combina tion with fluorescence spectroscopy. A considerable increase in segment den sity due to complexation compared with free poly(methyl methacrylate) chain was only slightly affected by the polymer concentration in solution where stereocomplexes were formed. At polymer concentrations up to 3x10(-3) g cm( -3), an increase in non-uniformity of polymer complex molecular weight and size and a shift to higher values of both were observed. In semidilute solu tions (at c > 3x10(-3) g cm(-3)) stereocomplexes virtually did not become h eavier and larger.