Determination of polymer chain conformation in amorphous polymers

We present the results of a careful examination of neutron scattering from polymer chains in bulk; we have arrived at the following conclusions: 1) Macromolecular chains (in bulk) have the same dimensions as in a θ solvent; 2) They obey the Debye formula q^?1 as low as 5 Å. In order to show this clearly, we compare the theoretical Debye curve and the experimental result for deuterated polystyrene (M_w = 21,000) in a matrix of ordinary polystyrene. The fit is remarkably good and leaves very little room for other interpretations.