Methacrylic acid graphene polymers and preparation method thereof
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A technology of methacrylic acid and graphene, applied in the field of graphene, can solve problems such as poor performance, and achieve the effect of improving overall performance, less defects, and more modification space
Inactive Publication Date: 2017-05-24
CHANGZHOU IND TECH RES INST OF ZHEJIANG UNIV
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Problems solved by technology
[0007] The technical problem to be solved in the present invention is: to overcome the functional modification of graphene in the prior art, the preparation graphene/pol
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[0019] The preparation of embodiment 1 original graphene
[0020] Add 100g of graphite powder into 100mL of NMP solvent, ultrasonicate for a period of time, centrifuge, and keep the supernatant to obtain the graphene dispersion.
Example Embodiment
[0021] The preparation of embodiment 2 enediynes
[0022] A: When the R group is a benzene ring:
[0023] (1) Put o-bromoiodobenzene (7.06mmol, 2g), cuprous iodide (0.228mmol, 0.044g) and bis(triphenylphosphine)palladium dichloride (0.238mmol, 0.166g) into a 100ml In the Schlenk reaction flask, redestilled triethylamine (20ml) was added after rapid vacuum exchange for nitrogen, and phenylacetylene (18.2mmol, 2ml) was added under nitrogen protection after vacuum exchange for nitrogen. Under the protection of nitrogen, the mixture was reacted in an oil bath at 80°C for 48 hours, and the mixed product was separated and purified by column chromatography to obtain product 1.
[0024] (2) As above, add product 1 (3.53mmol, 0.9g), bis(triphenylphosphine) palladium dichloride (0.119mmol, 0.083g), cuprous iodide (0.114mmol, 0.022g) into the reaction flask , triethylamine (10ml), after vacuuming and changing nitrogen, add propynyl alcohol (9.10mmol, 0.6ml), react in an oil bath at 80°...
Example Embodiment
[0034] The preparation of embodiment 3 graphene polymer
[0035] The NMP dispersion (1mg / mL) of prepared 100mL graphene is heated to reflux, slowly adds the NMP solution (100mL) of enediyne (100mg) with the speed of 1r / min with peristaltic pump, cool down after 12 hours of reaction , passing the reaction solution through a microporous membrane, filtering the obtained solid and washing it with THF, and finally dispersing the polymer into the THF solution to obtain a methacrylic graphene polymer solution.
[0036]
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Abstract
The invention belongs to the technical field of graphene and particularly relates to a methacrylic acid graphene polymer and a preparation method thereof. The methacrylic acid graphene polymer and the preparation method thereof disclosed by the invention have the beneficial effects that according to the methacrylic acid graphene polymer provided by the invention, graphene is modified by using a Bergman cyclization reaction of enediyne, and special requirements on the graphene are avoided; free radicals generated by the enediyne can be combined to the surface of the graphene by a C-C covalent bond, and pi-pi stacking binding of a naphthalene ring structure and the graphene also can be formed; double free radicals generated by the cyclization reaction of the enediyne can be used for conveniently preparing polymers such as polyhenylene and polynaphthalene; by using original graphene, the methacrylic acid graphene polymer is more complete in structure and fewer in defect, and various properties of the graphene are greatly retained; the graphene polymer can be further used for initiating a polymerization process; in addition, no initiator or a catalyst is needed in the polymerization process; the graphene polymer is self-polymerized to obtain graphene nanoparticles; a methacrylic acid unit is initiated again, so that a system for initiating the polymerization from multiple terminals can be formed.
Description
technical field [0001] The invention belongs to the technical field of graphene, in particular to a methacrylic graphene polymer and a preparation method thereof. Background technique [0002] As a new type of nanomaterial, graphene is the thinnest and hardest nanomaterial known in the world. It has unique physical and chemical properties such as large specific surface area, good thermal / electrical conductivity, and high mechanical strength. Although graphene is It constitutes the basic unit of various carbon materials, but it exhibits unique properties different from fullerenes and carbon nanotubes. The most typical important properties include Hall effect at room temperature, adjustable energy gap, and extremely high elasticity. Therefore, it is widely used in many aspects such as batteries, energy sources, and functional materials. [0003] Since the force between graphene is mainly π-π physical adsorption, graphene is prone to interlayer slippage under the action of ext...
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