A preparation method of a hydrogel electrode with high mechanical properties and self-healing properties
A hydrogel, self-healing technology, applied in medical science, sensors, diagnosis, etc., can solve the problems of lack of interaction between molecular chains, hydrogels do not have dynamic characteristics, and it is difficult to achieve self-healing, etc., to achieve widening Practical application range, excellent electrical conductivity, and the effect of improving mechanical properties
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Embodiment 1
[0017] A method for preparing a hydrogel electrode with high mechanical properties and self-healing properties, comprising the following steps:
[0018] Disperse 0.26g of carbon nanotubes in 10ml of a dopamine solution with a concentration of 2mg / ml, adjust the pH of the above solution between 8 and 14, stir and react at room temperature for 20 minutes, so that dopamine self-polymerizes to form polydopamine, and Evenly wrapped on the surface of the conductive nanomaterial to obtain a polydopamine-modified conductive nanomaterial; add 2.6g of acrylamide as a monomer to the polydopamine-modified conductive nanomaterial solution and mix evenly, then add 0.2g persulfuric acid Ammonium (APS) as the initiator, 0.15g N,N-methylenebisacrylamide (BIS) as the cross-linking agent and 10uL tetramethylethylenediamine (TMEDA) as the auxiliary agent, fully stirred and mixed evenly, initiated by free radicals Polymerization produces the hydrogel electrode.
Embodiment 2
[0020] A method for preparing a hydrogel electrode with high mechanical properties and self-healing properties, comprising the following steps:
[0021] Disperse 0.26g of carbon nanotubes in 10ml of a dopamine solution with a concentration of 2mg / ml, adjust the pH of the above solution between 8 and 14, stir and react at room temperature for 20 minutes, so that dopamine self-polymerizes to form polydopamine, and Evenly wrapped on the surface of the conductive nanomaterial to obtain a polydopamine-modified conductive nanomaterial; add 2.6g of acrylic acid as a monomer to the polydopamine-modified conductive nanomaterial solution and mix evenly, then add 0.15g of ammonium persulfate (APS) as the initiator, 0.20g N, N-methylenebisacrylamide (BIS) as the crosslinking agent and 20uL tetramethylethylenediamine (TMEDA) as the auxiliary agent, fully stirred and mixed, and initiated by free radicals Polymerization produces the hydrogel electrode.
Embodiment 3
[0023] A method for preparing a hydrogel electrode with high mechanical properties and self-healing properties, comprising the following steps:
[0024] Disperse 0.26g of carbon nanotubes in 10ml of a dopamine solution with a concentration of 2mg / ml, adjust the pH of the above solution between 8 and 14, stir and react at room temperature for 20 minutes, so that dopamine self-polymerizes to form polydopamine, and Evenly wrapped on the surface of the conductive nanomaterial to obtain a polydopamine-modified conductive nanomaterial; add 1.3g of N-isopropylacrylamide as a monomer into the polydopamine-modified conductive nanomaterial solution and mix evenly, and then Add 0.15g ammonium persulfate (APS) as initiator, 0.125g N, N-methylenebisacrylamide (BIS) as crosslinking agent and 15uL tetramethylethylenediamine (TMEDA) as auxiliary agent, stir and mix well Uniformly, the hydrogel electrode was prepared by free radical induced polymerization.
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