Polymers, saturated, ring analysis

It should be pointed out that this method for ring analysis and branching analysis is based exclusively on reliable data of n, d, M and a of pure individual hydrocarbons, and holds, within the limits of accuracy of the determination, for widely differing types of branched as well as non-branched saturated hydrocarbon mixtures. It is particularly recommended for the structural analysis of saturated polymers, where other statistical methods (w- -M-method, v-n-d-method, etc.) fail because they have been developed for mineral oils, and are based on correlations of physical data of mineral oil fractions that always show approximately the same small degree of branching 1-2 branchings per molecular weight = 100. 

Table IV contains data on hydrogenated polymers of propylene, isobutene and cyclohexene obtained by polymerization under various conditions38. The Direct Method (ultimate analysis and molecular weight) shows that the polymers of propylene and isobutene are paraffinic for the estimation of cp the appropriate formulas were used. In the case of the highly cyclic saturated cyclohexene-polymers the formulas for hydrogenated mineral oil fractions were applied. In the table are also given values of q> and Rt determined with the ring analysis diagrams of Figs. 59 and 60 (p. 64-65).

The viscoelastic analysis of poly(cycloheptyl methacrylate) (PCHpM), poly (cycloheptylmethyl methacrylate) (PCHpMM) and poly(cyclooctylmethacrylate) (PCOcM) (see Scheme 2.4) is a good example of the relaxational behavior of polymers containing saturated rings in the side chain. 

PTHPMA is a good example of the analysis of relaxational processes in polymers containing saturated and substituted side rings, and, allow to an understanding the origin of the molecular motions responsible of the fast relaxational complex processes in these systems. 

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