Composite material, and preparation method and application thereof
A composite material and chitosan technology, applied in chemical instruments and methods, refined hydrocarbon oil, and other chemical processes, can solve the problem of insignificant reduction of total sulfur, and achieve the effect of improving reactivity and flexibility
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Embodiment 1
[0024] Mix 1.0g chitosan (weight average molecular weight about 12kDa, deacetylation degree 92%), 0.6g silver nitrate, 100mL distilled water and stir for 30min, then add 5mL pure acetic acid to the chitosan silver nitrate aqueous suspension under stirring, Add 0.5g of carbon nanotubes to the above solution after stirring and dissolving, add 20mL of sodium borohydride aqueous solution (1.5%, wt%) dropwise (1mL / min) into the above solution under stirring, and stir, the color of the solution turns black, Then add 100mL of liquid paraffin and pour into the solution. Stirring 0.5mL glutaraldehyde (25%, wt%) solution was added dropwise to the above chitosan-silver solution. The mixture was stirred for another 0.5 hour, neutralized and titrated with 1 mol / L sodium hydroxide aqueous solution until the pH was 9, stirred for 0.5 hour, solid-liquid separation, the solid product obtained was washed with ethanol and then ultrasonically dispersed and washed in distilled water for 10 minutes...
Embodiment 2
[0029] Mix 1.0g chitosan (weight-average molecular weight about 80kDa, deacetylation degree 87%), 0.8g silver nitrate, 100mL distilled water and stir for 30min, then add 5mL pure acetic acid to chitosan silver nitrate aqueous suspension under stirring, stir After all dissolved, 2.5g of carbon nanotubes were added to the above solution, and 15mL of sodium borohydride aqueous solution (2%, wt%) was added dropwise (1mL / min) into the above solution under stirring, and the color of the solution turned black, and then Add 120 mL of liquid paraffin and pour into the solution. Stirring 0.8mL glutaraldehyde solution (25%, wt%) was added dropwise to the above chitosan-silver solution. The mixture was stirred for another 0.5 hour, neutralized and titrated with 1 mol / L sodium hydroxide aqueous solution until the pH was 9, stirred for 0.5 hour, solid-liquid separation, the solid product obtained was washed with ethanol and then ultrasonically dispersed and washed in distilled water for 10 ...
Embodiment 3
[0034]Mix 1.5g chitosan (weight-average molecular weight about 160kDa, deacetylation degree 82%), 0.6g silver nitrate, 100mL distilled water and stir for 30min, then add 5mL pure acetic acid to chitosan silver nitrate aqueous suspension under stirring, stir After all dissolved, 1.5g of carbon nanotubes was added to the above solution, and 10mL of sodium borohydride aqueous solution (2.6%, wt%) was added dropwise (1mL / min) into the above solution while stirring, and the color of the solution turned black. Then add 110 mL of liquid paraffin and pour into the solution. Stirring 0.6mL glutaraldehyde solution (25%, wt%) was added dropwise to the above chitosan-silver solution. The mixture was stirred for another 0.5 hour, neutralized and titrated with 1 mol / L sodium hydroxide aqueous solution until the pH was 9, stirred for 0.5 hour, solid-liquid separation, the solid product obtained was washed with ethanol and then ultrasonically dispersed and washed in distilled water for 10 min...
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