By John de Kock

This significant new learn offers the speculation, validation and experimental program of novel model-independent equipment in polymerization. the $64000 booklet is oversize, 212pp., Illustrated with equations, graphs, and charts.

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Additional info for Chain-Length Dependent Bimolecular Termination in Free Radical Polymerization Theory, Validation and Experimental Application of Novel Model-Independent Methods

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Further studies were also done with a slightly different topology of the polymer chains, such as with central phosphorescent groups as compared to end-groups [183] and with two phosphorescense polystyrene end-groups instead of one [183, 193, 194]. In the former case, at somewhat higher chain lengths, the kq for the quenching reaction between monomeric benzil with these polymers having central anthryl groups, showed a marked decrease indicating that the accessibility of these groups is much less than for terminal groups.

29 for 23 < i < 3900 [117]. They also extended their study to the (poorer) solvents cyclohexane and butanone [117, 183]. The data for all these systems could be described reasonably well by a theoretical model that they had previously derived and which was based on segmental diffusion control [111]. * Further studies were also done with a slightly different topology of the polymer chains, such as with central phosphorescent groups as compared to end-groups [183] and with two phosphorescense polystyrene end-groups instead of one [183, 193, 194].

First of all, not all of the above kinetic studies can be fully relied upon. Most studies have extracted kt values from ratios of kinetic parameters, which were extracted from a combination of several experimental techniques such as stationary state polymerization in combination with the rotating sector technique. 3). Values of the termination rate coefficient are therefore related to the chain-length distribution of the macroradicals and the comparison of kt data from different experiments is actually not valid.

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