【摘要】 研究了以三聚氯氰为活化剂,正丁胺、二甲胺、三甲胺、三乙胺、苯甲胺、对甲基苯胺、对氨基苯磺酸修饰戊二醛交联壳聚糖的制备及其红外光谱。壳聚糖1155cm-1的糖苷键ν(C—O—C)吸收峰、899cm-1的环振动吸收峰和1030cm-1的伯羟基ν(C—OH)吸收峰基本不变。在3430～3440cm-1的ν(O—H)和ν(N—H)吸收峰稍有变化,1400～1384cm-1的δ(C—H)吸收峰变化较明显。氨基化修饰交联壳聚糖仲羟基的ν(C—OH)吸收峰由1095cm-1移至1060～1070cm-1。三聚氯氰活化交联壳聚糖在803～812cm-1和1584～1590cm-1出现均三嗪环骨架振动吸收峰。随取代度和脱乙酰度不同,壳聚糖的酰胺Ⅰ,Ⅱ,Ⅲ峰强度变化明显。伯仲胺修饰交联壳聚糖在1517～1530cm-1出现质子化氨基δ(N—H)吸收峰,三甲胺、三乙胺修饰交联壳聚糖此峰消失或减弱,但在1400～1500cm-1出现一组ν(C—N)吸收峰。更多还原

【Abstract】 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 .更多还原