Preparation method of modified multi-wall carbon nano-tube material
A multi-walled carbon nanotube and modification technology, which is applied in the direction of chemical analysis by titration method, can solve the problems of complicated grafting method and cumbersome process procedure, and achieves the reduction of van der Waals force, good hydrophilicity and good polymerization. The effect of biocompatibility
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Embodiment 1
[0034] A preparation of a modified multi-walled carbon nanotube material, comprising the following steps:
[0035] 1) Using N,N-methylenebisacrylamide (MBA) and diethylenetriamine (DETA) as raw materials, a golden yellow viscous liquid amino-terminated hyperbranched polymer (NH 2 -HBP);
[0036] 2) Weigh 5 g of amino-terminated hyperbranched polymers (NH 2 -HBP), put in a three-necked flask, add 50g of ultrapure water and stir until completely dissolved;
[0037] 3) Use a microanalytical balance to weigh 0.5g of carboxyl-terminated carbon nanotubes, add them into a three-necked flask in a water bath at 45°C, react at a stirring speed of 20r / min for 3h, and then obtain modified multi-walled carbon nanotubes by suction filtration The tubes were repeatedly washed with ultrapure water three to four times, and dried in an oven at 60° C. to obtain multi-walled carbon nanotubes grafted with amino-terminated hyperbranched polymers.
Embodiment 2
[0039] A preparation of a modified multi-walled carbon nanotube material, comprising the following steps:
[0040] 1) Using N,N-methylenebisacrylamide (MBA) and diethylenetriamine (DETA) as raw materials, a golden yellow viscous liquid amino-terminated hyperbranched polymer (NH 2 -HBP);
[0041] 2) Weigh 8 g of amino-terminated hyperbranched polymers (NH 2 -HBP), put in a three-necked flask, add 80g of ultrapure water and stir until completely dissolved;
[0042]3) Use a microanalytical balance to weigh 0.8g of carboxyl-terminated carbon nanotubes, add them to a three-necked flask in a water bath at 50°C, react at a stirring speed of 25r / min for 3.5h, and then filter with suction to obtain the modified multi-walled carbon The nanotubes are repeatedly washed with ultrapure water for three to four times, and dried in an oven at 70° C. to obtain multi-walled carbon nanotubes grafted and modified by amino-terminated hyperbranched polymers.
Embodiment 3
[0044] A preparation of a modified multi-walled carbon nanotube material, comprising the following steps:
[0045] 1) Using N,N-methylenebisacrylamide (MBA) and diethylenetriamine (DETA) as raw materials, a golden yellow viscous liquid amino-terminated hyperbranched polymer (NH 2 -HBP);
[0046] 2) Weigh 10 g of amino-terminated hyperbranched polymers (NH 2 -HBP), put in a three-necked flask, add 50g of ultrapure water and stir until completely dissolved;
[0047] 3) Weigh 1 g of carboxyl-terminated carbon nanotubes with a micro-analytical balance, add them to a three-necked flask in a water bath at 55 ° C, react at a stirring speed of 30 r / min for 4 hours, and then obtain modified multi-walled carbon nanotubes by suction filtration , repeatedly washed with ultrapure water for three to four times, and dried in an oven at 80° C. to obtain multi-walled carbon nanotubes grafted with amino-terminated hyperbranched polymers.
[0048] The diameter of the modified multi-walled car...
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