Poly segmental anisotropy

Intrinsic segmental anisotropy of the polymer chain in various solvents, even in the absence of the form effect, may differ owing to a specific effect of the solvent (see, e.g., poly(vinyl acetate)) (5- 11). Specific effect may probably includes phenomena such as a change in the type of rotation of the side groups (5,6,8,12), a change in the polarizability of its bonds, and the short-range ordering of the solvent molecules (11). 

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