Synthesis and solution properties of ionic liquid-type polysiloxane bola surfactants |
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| Authors: | Xiaojun Zeng Yuanzhen Zhang Yiwen Li Wenjing Wang Liang Wang |
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| Affiliation: | 1. School of Chemistry and Materials Egineering, Changshu Institute of Technology, Changshu Jiangsu, China;2. Yihai Fine Chemical Limited Company, Lianyungang Jiangsu, China |
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| Abstract: | Three novel ionic liquid (IL)-type polysiloxane bola surfactants (ATPS-MA, ATPS-EA, and ATPS-PA) were designed and synthesized using a two-step method. Their chemical structures were characterized by Fourier transform infrared spectroscopy (FTIR) and proton nuclear magnetic resonance (1H NMR) spectroscopy. Their surface activity and aggregation behavior in aqueous solution were systematically investigated by surface tension measurements, transmission electron microscopy (TEM), and dynamic light scattering (DLS). Surface activity measurement results indicated that the γCMC of the three IL-type polysiloxane surfactants are under 25 mN m?1, and much lower than those of conventional IL hydrocarbon bola surfactants due to the introduction of siloxane group at the end of the hydrophobic chains. TEM and DLS analyses results indicated that the three surfactants can self-assemble into spherical micelles with a range from 50 to 300?nm, indicating potential uses as model systems for biomembranes and vehicles for drug delivery. |
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| Keywords: | Bola surfactants ionic liquids polysiloxane properties synthesis |
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