Polymer surfactant with efficient carbon dioxide responsiveness and preparation method
A surfactant, carbon dioxide technology, applied in the direction of chemical instruments and methods, drilling composition, etc., can solve the problems of separation difficulty, limitation, large amount, etc.
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example 3
[0034] Instance 3 in C 3 D. 6 in O 1 HNMR
[0035] Gel Permeation Chromatography
[0036] Instrument model: DAWN HELEOSⅡ18-angle laser light scattering instrument (Wyatt, USA)
[0037] Chromatographic conditions: chromatographic column: Shodex OHpak SB-804HQ, SB-806HQ; mobile phase: 0.1mol / L sodium nitrate solution: flow rate: 1ml / min; column temperature: 25°C.
[0038] Figure 5 It is the GPC spectrum of Example 3 of the present invention, the molecular weight distribution is 3500-4500, n=12-20, and the molecular weight distribution is relatively narrow.
[0039]
[0040] Figure 6 It is the water-oil interfacial tension spectrum at different concentrations of Example 3 of the present invention. After fitting, the CMC concentration of the example 3 sample is 0.02%, which shows that this type of surfactant can form micelles at a lower concentration, and has a low dosage. advantage.
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