Preparation and FTIR properties of amino compounds modified glutaraldehyde crosslinked chitosan resin activated with cyanuric chloride

The preparation and IR properties of 1 butylamine, dimethylamine, trimethylamine, triethylamine, benzylamine, 4 methylaniline and 4 aminobenzenesulfonic acid modified glutaraldehyde crosslinked chitosan activated with cyanuric chloride were studied. The absorption of ν (O—H) and ν (N—H) at 3 430 3 440 cm -1 , ν (C—O—C) at 1 155 cm -1 , ν (C—OH) at 1 030 cm -1 and ν (C—O) of β D glucose at 899 cm -1 were not shifted obviously. The absorption of δ (C—H) at 1 400 1 384 cm -1 and ν (C—OH) at 1 095 cm -1 varied markedly. The ν (CN) absorption of crosslinked chitosan was at 1 640 1 650 cm -1 . The skeleton vibration absorption of 1,3,5 triazine ring was at 803 812 cm -1 and 1 584 1 590 cm -1 . With different deacetylation or substitution, the amide Ⅰ, Ⅱ, Ⅲ absorption at 1 650, 1 600 and 1 310 cm -1 varied obviously. When modified with 1 butylamine, dimethylamine, benzylamine, 4 methylaniline and 4 aminobenzenesulfonic acid, strong absorption of δ (NH + 3) appeared at 1 517 1 530 cm -1 , which was weakened or disappeared when modified with trimethylamine or triethylamine, but a series of new absorption of ν (C—N) appeared at 1 400 1 500 cm -1 .