Effects of Adsorbed Block Copolymer and Comb-like Amphiphilic Polymers in Solution on the Electrical Percolation and Light Scattering Behavior of Reverse Microemulsions of Heptane/Water/AOT
✍ Scribed by Thomas H. Wines; Poniseril Somasundaran
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 268 KB
- Volume
- 256
- Category
- Article
- ISSN
- 0021-9797
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✦ Synopsis
The effects of adsorbed amphiphilic polymers on the electrical percolation and light-scattering behavior of aerosol-OT/ heptane/water reverse microemulsions were investigated. In this study, a comb-like polymer (polymaleic anhydride octyl vinyl ether) was found to lower the electrical percolation temperature threshold while a block copolymer (polybutadiene-polyethylene oxide) was found to have the opposite effect. Dynamic light-scattering studies of the polymer-reverse microemulsion systems indicated that the spherical droplet structure was maintained in the presence of the adsorbed polymers. Based on considerations for polymeraerosol-OT interactions and packing, a model is presented for the possible microstructure of the polymer-reverse microemulsion complexes.