Unformatted text preview: of polymer chain, so that the end group analysis can be used to determine the extend of polymerization and polymer molecular weight. * Stepwise Reaction Step polymerization proceede by the molecules reacting with each other. (i) the monomer dsiappear in the very eraly stage of the reaction (ii) a relatively slow increase in molecular weigth of the polymer (iii) Rate constant (kp) is independent of the reaction time and polymer molecular weight In general, it is true until the polymer having very high molecular weight (iv) The successful synthesis of high polymers (M n > 10,000 g/mole) requires equal moles of two functional groups and high conversion (> 99%)...
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This note was uploaded on 10/16/2010 for the course MATSE 441 at Penn State.