Abstract
A study of the osmotic second virial coefficient A of mixtures of two chemically identical polymers differing in molecular weight in a good solvent has been performed. We have measured A as a function of the relative composition of the dissolved polymers for ten different combinations with molecular weight ratios varying from 1.8 to about 100. The experimental results were compared to the predictions of more than ten different theories. None of them can satisfyingly describe the behaviour of A in the whole region of molecular weight ratios. Our results show that when the two polymers have about the same size they behave like quasi-hard spheres and in the other limit of large size differences an interpenetration of the smaller molecule into the larger one is probable.
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© 1988 Elsevier Applied Science Publishers Ltd.
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Mennen, M., Smit, J., Mandel, M. (1988). On The Interpenetration Effect Of Two Homogeneous Polymers Differing In Molecular Weight In a Good Solvent. In: Lemstra, P.J., Kleintjens, L.A. (eds) Integration of Fundamental Polymer Science and Technology—2. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-1361-5_32
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DOI: https://doi.org/10.1007/978-94-009-1361-5_32
Publisher Name: Springer, Dordrecht
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