Abstract
A study has been made of mean spacings between chain units or of the mean concentration of spin labels in the volume of a macromolecular coil in relation to the polymer concentration ( c p = 0·001–0·7 g/cm 3) in solutions of varying thermodynamic quality, as well as in the solid amorphous polymer. It is shown that within limits of the conditions examined the size of the coil, assumed to be Gaussian, exceeds theta dimensions, while the coil size in the solid polymer is close to theta dimensions. Models of concentrated polymer solutions are analysed.
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