Synthesis method of a polysaccharide biomass-based rapid self-healing gel
A synthesis method and biomass technology, applied in the field of synthesis of polysaccharide biomass-based rapid self-healing gel, can solve the problems of toxicity and difficult biocompatibility, and achieve the effects of strong mechanical properties, low pollution, and simple production process
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Embodiment 1
[0038] The specific steps of the preparation method of the polysaccharide biomass-based rapid self-healing gel based on the hydrazone bond and the coordination bond of the metal ion are as follows:
[0039] 1. Put 1g of cellulose in a beaker, add 10g of sulfuric acid solution with a concentration of 64%, and stir magnetically at 45°C for 90min. After cooling down to room temperature, dilute the prepared solution 10 times with distilled water, and dialyze for several days to reach the solution become neutral, and the concentration of nanocellulose solution is 2.5wt% after rotary evaporation.
[0040] 2. Add 1g of FeCl with a molar ratio of 1:0.55 to the flask 3 ·6H 2 O and FeCl 2 4H 2 O mixture, add 10 g of distilled water, and gradually add 25% NH after ultrasonically dissolving at 50 °C 3 ·H 2 O until the solution was strongly alkaline (pH = 14) at 60 °C under nitrogen purge, and prepared as Fe by ultrasonic dispersion, filtration, and drying. 3 o 4 nanoparticles. The...
Embodiment 2
[0045] The specific steps of the preparation method of the polysaccharide biomass-based rapid self-healing gel based on the hydrazone bond and the coordination bond of the metal ion are as follows:
[0046] 1. Put 1 kg of cellulose in a beaker, add 20 kg of sulfuric acid solution with a concentration of 64%, stir magnetically at 45°C for 60 minutes, and dilute the prepared solution 10 times with distilled water after cooling down to room temperature, and dialyze for several days until the solution becomes To be neutral, the concentration of nanocellulose solution is 2.0wt% after rotary evaporation.
[0047] 2. Add 1 kg of FeCl with a molar ratio of 1:0.65 to the flask 3 ·6H 2 O and FeCl 2 4H 2 O, add 15kg of distilled water, and quickly add 25% NH after ultrasonically dissolving at a temperature of 70°C 3 ·H 2 O until the solution was strongly alkaline (pH = 14) at 60 °C under nitrogen purge, and prepared as Fe by ultrasonic dispersion, filtration, and drying. 3 o 4 nan...
Embodiment 3
[0052] The specific steps of the preparation method of the polysaccharide biomass-based rapid self-healing gel based on the hydrazone bond and the coordination bond of the metal ion are as follows:
[0053] 1. Put 1kg of cellulose in a beaker, add 50kg of sulfuric acid solution with a concentration of 65%, stir it magnetically for 120min at 45°C, and dilute the prepared solution 10 times with distilled water after cooling down to room temperature, and dialyze it for several days to reach the solution Become neutral, make the concentration of nanocellulose solution be 1.0wt% after rotary evaporation.
[0054] 2. Add 1 kg of FeCl with a molar ratio of 1:0.70 to the flask 3 ·6H 2 O and FeCl 2 4H 2 O, add 12kg of distilled water, and gradually add 25% NH after ultrasonically dissolving at 85°C 3 ·H 2 O until the solution was strongly alkaline (pH = 14) at 60 °C under nitrogen purge, and prepared as Fe by ultrasonic dispersion, filtration, and drying. 3 o 4 nanoparticles. T...
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