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Preparation example
① Preparation of cationic starch adsorbent Xiao Haojiang et al.
a.
b.
②Preparation of anionic starch adsorbent In Jiugao, etc.
a.
b.
c.
③ Preparation of amphoteric starch integrated adsorbent Zou Xinxi uses corn or sweet potato starch, cross-linked by epichlorohydrin, etherifying agent (monochloroacetic acid and 3-chloro-2-hydroxypropyltrimethylammonium chloride) anion, Cationization to prepare amphoteric starch chelating adsorbent
a.
b.
I.
c.
I.
II.
④Enzymatic modification to make cross-linked microporous starch adsorbent
a.
b.