Cellulose is recognized as the most abundant biopolymer in nature offer wide chance to be used for superior applications such as water purification [1,2]. It is natural, renewable, environmentally friendly, efficient and cost-effective, sustainable, bio–degradable and derived also easily from plant sources [3]. In this context, fully biobased and crosslinked adsorbent polymer Schiff base was prepared by using oxidation reaction of extracted cellulose biopolymer. A safe crosslinked cellulose dialdehyde -CCDA- was synthesized through epichlorohydrin and sodium metaperiodate -NaIO4- followed by Schiff base formation with pphenylenediamine [Fig. 1]. Crosslinking, oxidation and Schiff base formation of the extracted cellulose was confirmed by using FTIR spectrum. The index bonds of crosslinked cellulose -CC-, CCDA and the crosslinked cellulose Schiff base -CCSch- were appeared at about 3419, 1727 and 1607 cm-1 respectively. The prepared imine bands and microstructure of the synthesized product was investigated from EDS and SEM analyses. -Project code 3/47733-

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