A self-healing ionic gel with high ionic conductivity and its preparation and application
A technology of ion gel and ionic liquid, which is applied in the field of self-healing ion gel and its preparation, can solve the problems of difficult degradation of fluorine-containing materials, environmental pollution, poor mechanical properties and thermal stability, etc.
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Embodiment 1
[0026] A method for preparing a self-healing ionic gel with high ionic conductivity, excellent thermal stability and excellent mechanical strength by using PLA-b-PMMA diblock copolymer and ionic liquid blending, the specific steps are as follows:
[0027] 1. Synthesis of diblock copolymers PLLA-b-PMMA and PDLA-b-PMMA
[0028] 1) Add 0.149g of 2,2,2-trichloroethanol, 10g of L-lactide (D-lactide) and 8 μL of stannous isooctanoate to a self-made glass tube in an argon-protected glove box, vacuum After 1 minute of pumping, the nozzle was melted and polymerized at 130°C for 5h, and then three cycles of chloroform dissolution-ethanol precipitation-suction filtration were performed, and the prepolymer PLLA (PDLA) was obtained after vacuum drying at 60°C for 3 days. They are denoted as PLLA-1 and PDLA-1 respectively, and the number 1 refers to the sample number;
[0029] 2) Take 2g prepolymer PLA-1, 10g methyl methacrylate, 5mg cuprous chloride, 63μL N,N,N',N",N"-pentamethyldiethylen...
Embodiment 2
[0055] A method for preparing high-performance ionic gel by blending PLA-b-PMMA diblock copolymer and ionic liquid, the specific steps are as follows:
[0056] 1. Synthesis of high molecular weight diblock copolymers PLLA-b-PMMA and PDLA-b-PMMA
[0057] 1) Add 0.025g of 2,2,2-trichloroethanol, 10g of L-lactide (D-lactide) and 8 μL of stannous isooctanoate into a self-made glass tube in an argon-protected glove box, vacuum After 1 minute of pumping, the nozzle was melted and polymerized at 130°C for 5h, and then three cycles of chloroform dissolution-ethanol precipitation-suction filtration were performed, and the prepolymer PLLA (PDLA) was obtained after vacuum drying at 60°C for 3 days. Denoted as PLLA-2 and PDLA-2, respectively;
[0058] 2) Take 1 g of prepolymer PLA-2 in step 1, 10 g of methyl methacrylate, 1.7 mg of cuprous chloride, 22 μL of N,N,N',N",N"-pentamethyldiethylenetriamine and 10 mL of dimethyl sulfoxide was added to a 50 mL Schlenk reaction flask, and after ...
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