Abstract
Solution properties of styrene/di-n-butyl itaconate (SDBI), styrene/di-n-hexyl (SDHI) and styrene/di-n-octyl itaconate (SDOI) copolymers from the entire range of copolymer compositions were investigated on series of fractions of uniform composition. Kuhn-Mark-Houwink-Sakurada (KMHS) constants were extrapolated to K⊖ and all results combined with those of styrene/dimethyl itaconate (SDMI) from a previous publication. The σ-parameters describing short range interactions deviate increasingly from the linear summation of parent homopolymer contributions.The excess unperturbed dimensions are correlated with parent homopolymer solubility parameters and discussed in terms of hetero-contacts in the copolymer chain.
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