The invention discloses a crosslinking type
polymer anionic membrane and a preparation method of crosslinking type
polymer anionic membrane. Anionic membrane takes a
polymer containing chloromethyl group as a main chain; in preparation, the chloromethylation of polymer anionic membrane and
ionization of the main chain are carried out successively, a
biguanide or multi-guanide structural aquogel is prepared, and the aquogel performs thermal
polymerization at original site in the membrane to form a membrane; at last, through the alkali treatment, the anion-exchange membrane is obtained. The
guanidine type polymer contains a lot of
guanidine radicals capable of conducting anion easily, and the
ion conductivity can be effectively improved; the water-retaining ability of
silane can also improve the ionic conduction ability of the membrane; the
ion group is free from beta-H, so that Hofmann degradation can be eliminated; the
super absorbent and inflation resistance of aquogel can improve
water content of membrane, reduce OH- salvation degree, lighten
attack of ON- to
ion base, and improve the alkali stability of the membrane; the crosslinking structure can further inhibit the membrane swelling. The prepared membrane is high in water absorbent, low in swelling rate, and able to obviously improve the alkali stability of the membrane.