Amphiphilic cross-linked fluoropolymer and application thereof in preparation of ultra-amphiphobic surface
A super-amphiphobic surface and polymer technology, applied in the manufacture of tools, coatings, paper coatings, etc., can solve the problem of non-toxic and environmentally friendly solvent dispersants, weak adhesion between fluoropolymers and substrate surfaces, etc. problem, to achieve the effect of simple method and firm bonding
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Embodiment 1
[0051] ATRP synthesis of amphiphilic cross-linkable fluoropolymers comprises the following steps:
[0052] Add 1.852g trifluoroethyl methacrylate, 0.203g monomethoxyethylene glycol 2-bromoisobutyrate, 0.237g 4,4'-dinonyl-2,2' into a 100ml round bottom flask - bipyridine and 3ml anisole, the reaction system was stirred and dissolved, and the argon bubble was bubbled for 30min, and then the oxygen was removed, and then the reaction system was transferred to a 50ml round bottom flask with 0.1124g cuprous bromide, at 40 The polymerization reaction was carried out at ℃ for 2 hours, and the reaction product was precipitated in methanol, washed with methanol and then washed with n-hexane, and then vacuum-dried at room temperature for 24 hours to constant weight to obtain the product PTFEMA-Br.
[0053] In a 100ml round bottom flask, add 1.5g polytrifluoroethyl methacrylate (PTFEMA-Br) synthesized above, 1.052g glycidyl methacrylate (GMA), 1.252g polyethylene glycol glycidyl methacryl...
Embodiment 2
[0062] Synthesis of amphiphilic cross-linkable fluoropolymer by anionic polymerization, comprising the following steps:
[0063] At -78°C (dry ice acetone bath), add 0.19 ml of 1,1-diphenylethylene to a three-necked flask containing 250 ml of anhydrous tetrahydrofuran, followed by adding 0.6 ml of 1.4 mol / L sec-butyllithium in hexyl alkane solution. After 25 minutes, 25.19 milliliters of pentafluoroethyl methacrylate was added, and 21.24 milliliters of glycidyl acrylate (GA) and 25 polyethylene glycol methacrylate (PEGMA) were added at the same time after the polymerization reaction was carried out for 1 hour, and the polymerization reaction continued for another 2 hours. After 1 hour, 1.0 ml of anhydrous methanol was added to terminate the polymerization. After the reaction system was heated to 23°C, it was concentrated by distillation to 100 ml, and then the polymer was precipitated in excess methanol, filtered and dried in a vacuum oven to obtain the desired polymer PFEMA-...
Embodiment 3
[0072] Synthesis of amphiphilic cross-linkable fluoropolymers using the "Click" method, including the following steps:
[0073] Add 2.852g of pentafluoroethyl methacrylate, 0.103g of trimethylsilyl ATRP initiator, 0.237g of 4,4'-dinonyl-2,2'-bipyridine and 3ml of benzyl in a 100ml round bottom flask Ether, stirring and dissolving the reaction system, bubbling with argon gas for 30min, then deoxygenating, then transferring the reaction system to a 100ml round-bottomed flask containing 0.1124g of cuprous bromide, and carrying out the polymerization reaction at 40°C for 2h, the reaction The product was precipitated in methanol, washed with methanol and then washed with n-hexane, and then vacuum-dried at room temperature for 24 h to constant weight to obtain PFEMA with an alkynyl terminal.
[0074] Add 0.15g monomethoxyethylene glycol 2-bromoisobutyrate, 1.852g glycidyl methacrylate and 1.125g polyethylene glycol methyl methacrylate, 0.737g 4 in a 100ml round bottom flask, 4'-Din...
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