Citation: . PREPARATION OF BISPHENOL A EPOXY RESIN WATERBORNE DISPERSIONS BY THE PHASE INVERSION EMULSIFICATION TECHNIQUE*[J]. Chinese Journal of Polymer Science, ;2000, 18(1): 33-38. shu

PREPARATION OF BISPHENOL A EPOXY RESIN WATERBORNE DISPERSIONS BY THE PHASE INVERSION EMULSIFICATION TECHNIQUE*

Received Date: 25 February 1999

The phase inversion emulsification technique (PIET) is an effective physical method for preparing waterbornedispersions of polymer resins. Some results concerning the preparation of bisphenol A epoxy resin waterborne dispersions byPIET in our laboratory were summarized. Electrical properties, rheological behavior and morphological evolution duringphase inversion progress were systematically characterized. The effects of the emulsifier concentration and emulsification temperature on phase inversion progress and the structural features of the waterborne particles were studied as well.The deformation and break up of water drops in a shear field were analyzed in terms of micro-rheology,while the interaction and coalescence dynamics of water drops were discussed in terms of DLVO theory and Smoluchowski effective collision theory,respectively.Based on the experimental results and theoretical analysis,a physical model of phase inversion progress was suggested,by which the effects of the parameters on phase inversion progress and the structural features of the waterborne particles were interpreted and predicted.
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