POLYMERIZATION OF BUTYL ACRYLATE IN ANIONIC MICROEMULSION

Butyl acrylate was initiated with KPS or BPO to polymerize at high mon omer concentration in the microemulsions with SBOA (sodium 12-butinoyl oxy-9-octadecenate) as emulsifier. The microemulsion remained clear or reddish. It was found that the constant polymerization period appeare d in most microemulsions and the length of it varied with the concentr ation of monomer and the initiating rate. When microemulsions were ini tiated with KPS, the overall polymerization rate increased with the em ulsifier concentration; while initiator was BPO, it showed the inverse tendency. It was attributed to the difference between the initiating mechanism of the two initiators. (C) 1996 John Wiley & Sons, Inc.