Abstract
Taking account of the effect of the large side group, the expression of the unperturbed mean-square radius of gyration, 〈S2〉, is improved from the Lagrange relation. Using the derived relation, the ratio curve, 〈S2〉/x vs. the logarithm of degree of polymerization x for the atactic poly(methyl methacrylate) (A-PMMA) chain, gives a small bump, which agrees better with experiment data. The characteristic ratio 〈S2〉/2xl2 and the temperature coefficient dln〈S2〉/dT dependence on the stereoirregularity are also investigated by the derived formula.
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Ma, H., Zhang, L. Effect of Side Group on Mean-Square Radius of Gyration of Atactic Poly(methyl methacrylate) Chain. Polym J 29, 1012–1015 (1997). https://doi.org/10.1295/polymj.29.1012
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DOI: https://doi.org/10.1295/polymj.29.1012