This dissertation, on the ``Monte Carlo (MC) analysis of Molecular Weight Distributions (MWD) of Vinyl Acetate (VAc) emulsion polymers'', intially presents: (a) the literature review, (b) fundamentals of emulsion polymerization processes, which include the intervals of emulsion polymerization and type of emulsion polymerization system, and (c) fundamentals of MC simulation method, which include the basic component of MC simulation algorithm, various probability distribution functions and method of simulation. In order to determine the MWD, a MC simulation algorithm has been proposed, which takes into account all the kinetic events including radical entry, radical desorption, and dead polymer formation. This MC method is very efficient, since it allows several additions to occur in a single computing step. The effect of radical production rate in the water phase and the bimolecular termination rate are studied vis-a-vis the MWDs, obtained by the emulsion polymerization of VAc emulsion polymers. A significant effect of both the parameters has been observed on the MWDs of a VAc emulsion polymers.