vinyl chloride emulsion polymerization reaction: effect of various formulations

a mixture  of  sodium  lauryl  sulfate  (sls)  as  ionic  emulsifer  and  stearyl alcohol as non-ionic emulsifer was employed in a vinyl chloride emulsion polymerization  reaction  to  study  the  infuence  of  various  interactive parameters involved in the reaction system. it was found that the particle size was dependent on the amount and type of emulsifer. the average particle size of polyvinyl chloride was dropped by higher amount of emulsifying agents.  at the gel point, more heat was generated by higher amount of vinyl chloride fed into the reaction system. the molecular weight of the polymer was decreased by increases in reaction temperature while,  it  increased by augmenting  the amount of emulsifer. according to the 13c nmr and ftir spectroscopic data no defect was detected in the chain structure of synthetic polyvinylchloride product. an optimization of polymerization reaction condition was reached based on ultimate particle size desired for its favorable distribution in plastisols.