Effect of Polymers on the Cloud Point of Dodecyl-polyoxyethylene Polyoxypropylene Ether Nonionic Surfactants
- Received Date: 2000-05-08
- Cloud point, Dodecyl polyoxyethylene polyoxypropylene ether, Nonionic surfactant, Polymer, Poly(ethylene glycols), Polyvinylpyrrolidone /
Abstract: The effects of poly(ethylene glycols) with different molecular weight (PEG1000, PEG2000, PEG6000) and polyvinylpyrrolidone with different polymerization degree (PVP-K30, PVP-K90) on the cloud point of nonionic surfactant dodecyl polyoxyethylene polyoxy propylene ether C12H25O(EO)m(PO)nH (LS36,m=3, n=6; LS45,m=4, n=5; LS54,m=5, n=4) were studied in the paper. It is found that a higher polymer concentration can result in a significant decrease on the cloud point of the aqueous surfactant solutions because of the formation of corona-shaped intra-chain micelles which indicate that the micelle-micelle interaction is attractive and can be expected to facilitate collisions among the micelles, as well as a slightly increasing at a lower PVP concentration because of the effects of viscosity, charge, and interaction between the polymer and surfactant.
|Citation:||Mu Jianhai, Li Ganzuo, Chen Wenjun, Li Ying. Effect of Polymers on the Cloud Point of Dodecyl-polyoxyethylene Polyoxypropylene Ether Nonionic Surfactants[J]. Chinese Journal of Chemical Physics , 2001, 14(1): 119-124. doi: 10.1088/1674-0068/14/1/119-124|