Polymer Solution Thermodynamics:
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چکیده
Up to this point we have considered polymer chains in solvent at various concentrations. In dilute solution, we observed that the segmental density is localized around the center of mass of the coils; the local concentration gradient experienced by each chain drives the swelling of the coils. By contrast, in polymer melts, this swelling force is exactly cancelled by analogous forces exerted by neighboring chains -the consequence is that polymer chains in the melt (even blends of polymers) are well described by Gaussian coil models!
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Polymer Solution Thermodynamics:
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