Hyperbranched polymer modified graphene oxide in water phase and method for preparing hyperbranched polymer modified graphene oxide
A technology of hyperbranched polymers and graphene, applied in chemical instruments and methods, medical preparations of non-active ingredients, pharmaceutical formulations, etc., can solve problems such as unfavorable large-scale applications, and achieve a simple and easy reaction process. The effect of mild conditions
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[0022] Example 1
[0023] The specific method of hyperbranched polymer modified graphene oxide is as follows:
[0024] (1) Take 30 mg of graphene oxide powder, add 30 mL of deionized water, and ultrasound for 4 hours to obtain a stable dispersion of 1 mg / mL graphene oxide;
[0025] (2) Add 2.584 g of 1-(2-aminoethyl)piperazine to the dispersion prepared in step (1), and stir at 30°C for 24 hours;
[0026] (3) Add 3.083g of N,N-methylenebisacrylamide to the reaction system of step (2), and continue to stir at 30°C for 60 hours to obtain 1mg / mL hyperbranched polymer / hyperbranched polymer modification Graphene oxide mixed solution;
[0027] (4) Place the reaction solution prepared in step (3) in an 8-14kDa dialysis bag and dialyze for one week to obtain hyperbranched polymer modified graphene oxide;
[0028] Characterize the prepared, figure 1 Is the infrared spectrum of graphene oxide material before and after modification, of which 2920cm -1 It is the characteristic peak of C-H bond. Aft...
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[0029] Example 2
[0030] The specific method of hyperbranched polymer modified graphene oxide is as follows:
[0031] (1) Prepare a 1 mg / mL graphene oxide dispersion after 4 hours of ultrasound, take 1 mL of the dispersion and add deionized water to dilute to 30 mL;
[0032] (2) Add 2.584 g of 1-(2-aminoethyl)piperazine to the dispersion prepared in step (1), and stir at 30°C for 24 hours;
[0033] (3) Add 3.083g of N,N-methylenebisacrylamide to the reaction system of step (2), and continue to stir at 30°C for 48 hours;
[0034] (4) Add deionized water to the solution of step (3) and dilute to 500 mL to obtain a hyperbranched polymer / hyperbranched polymer modified graphene oxide mixed solution with a graphene oxide concentration of 2 mg / L.
[0035] The solution is used to prepare pervaporation membranes on the surface of inorganic ceramic materials, and the inorganic tubular membranes are pretreated: the inorganic membranes are immersed in the ethanol solution of 3-amino-triethoxysilane...
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