Anionic functionalized fluorine-containing polymer and preparation method thereof
An anionic and functionalized technology, applied in the field of anion-functionalized fluoropolymer and its preparation, can solve the problems of insignificant hydrophilic effect, limited application scope of fluoropolymer materials, etc., and achieve strong negative charge performance and cation exchange The effect of adsorption performance
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Embodiment 1
[0147] Synthesis of anion-functionalized fluoropolymer P1:
[0148]Add 2000ml deionized water, additive polyvinyl alcohol (PVA) 1.2g, additive hydroxypropyl methylcellulose (HPMC) 0.4g, initiator peroxydicarbonate bis(2-ethylhexyl) in the stainless steel reaction kettle (EHP) 1g, evacuated and filled with nitrogen repeatedly 3 times, then added 1500g of vinylidene fluoride, 27.19g of hydroxyethyl acrylate and 4.85g of allyl 2-bromo-2-methylpropionate, pre-dispersed and stirred at room temperature for 30 minute. The temperature was raised to a polymerization temperature of 47° C. to carry out a polymerization reaction. React for 12 hours, stop heating when the pressure drop in the kettle reaches 0.2MPa, let it volatilize naturally for 15 minutes, let air in for 5 minutes, vacuumize and fill with nitrogen three times, then add sodium bicarbonate until the pH is 8, add 22.03g of sodium acrylate , copper 5g, cuprous chloride 5g, 2,2'-bipyridine (bpy) 16g, then temperature contro...
Embodiment 2
[0167] Synthesis of anion-functionalized fluoropolymer P2:
[0168] P2 synthetic process with reference to embodiment 1. The formula is shown in Table 1 and the process parameters are shown in Table 2.
[0169] The P2 structure and performance characterization methods are the same as those described in Example 1. The general formula of the P2 structural formula is the same as that of P1, and the parameters in the general formula are shown in Table 3;
Embodiment 3
[0171] Synthesis of anion-functionalized fluoropolymer P3:
[0172] The synthesis process of P3 refers to Example 1. The formula is shown in Table 1 and the process parameters are shown in Table 2.
[0173] The P3 structure and performance characterization methods are the same as those described in Example 1. The general structure of P3 is the same as that of P1, and the parameters in the general formula are shown in Table 3; the molecular weight, molecular weight distribution and content of anion functionalized monomer components in the polymer of P3 are shown in Table 4.
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