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Polymeric Surfactants Based on Oleic Acid— Lamellar Liquid Crystal Polymerization of Sodium Oleate/Water/Hexadecane/4-Allyl-1, 6-Heptadiene-4-ol System And Sodium Oleate/Water/Hexadecane/Pentaerythritol Triarylate System

  • Qinghong Fu (a1)

Abstract

The lamellar liquid crystalline (LLC) regions of sodium oleate (NaOL)/ water/hexadecane/4-allyl-1,6-heptadiene-4-ol (AHD-ol) system and sodium oleate (NaOL) /water/hexadecane/pentaerythritol triacrylate (PETA) system were determined when the weight ratio of NaOL to hexadecane was kept at 90:10. Copolymerization was accomplished in the LLC phases of the above systems. AHD-ol and PETA acted as the cross-linking agents between the double bonds on NaOL backbones in their systems respectively. Interlayer spacing determinations showed that the cross-linking agents, AHD-ol and PETA, were solubilized in the middle of the NaOL hydrocarbon chains in each LLC system. As a result, the copolymerization reactions were confined within each monolayer of the amphiphilic bilayer. The systems after the copolymerization were a mixture of water and LLC phase for the former system and a mixture of LLC phase and solid particles for the latter one. The aqueous solutions of copolymers exhibited surface activity, but with both higher CMC and surface tension values than NaOL aqueous solutions.

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1. Fu, Q.H., Friberg, S. E., Zhang, Z. Q., and Aikens, P., J. Dispersion. Sci & Tech., 2000, 21 (7), 10071021
2. Fu, Q.H., Zhang, Z. Q., Friberg, S. E., J. Dispersion Sci &Tech., 2000, submitted.
3. Kayali, Ibrahim; Li, Fang; Zhang, Zhiqiang; Sandburg, Joel D.; Friberg, Stig E.. J. Dispersion Sci. Technol. 1999, 20(7), 17891807.
4. Fang, Li; Zhiqiang, Zhang; Friberg, Stig E.; Aikens, Patricia A. J. Polym. Sci., Part A: Polym. Chem. 1999, 37(15), 28632872.

Polymeric Surfactants Based on Oleic Acid— Lamellar Liquid Crystal Polymerization of Sodium Oleate/Water/Hexadecane/4-Allyl-1, 6-Heptadiene-4-ol System And Sodium Oleate/Water/Hexadecane/Pentaerythritol Triarylate System

  • Qinghong Fu (a1)

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