【摘要】 通过羧甲基纤维素 (CMC)接枝大分子季铵盐———环氧丙基三辛基氯化铵 (EPTO) ,合成新型水溶性两性纤维素衍生物 (TOPCMC) .确定了以环氧氯丙烷、三辛胺合成EPTO的最佳条件 :用与三辛胺等体积的乙醇作介质 ,反应温度控制在 73℃左右 ,反应时间为 5h .还研究了EPTO用量、碱的种类、介质组成等对CMC季铵化的影响 .并对原料CMC及产物TOPCMC的IR ,DTA及X射线衍射图进行了研究 .更多还原

【Abstract】 A new water soluble amphoteric cellulose derivative(TOPCMC) was obtained by grafting glycidyl trioctylammium(EPTO) onto carboxymethylcellulose(CMC). The proper conditions of preparing EPTO from epichlorohydrin and trioctylamine were determined:using ethanol as medium, whose volume was equal to the trioctylamine′s, the react temperature was controled at about 73 ℃, the react time was 5 h. The effects of the amount of EPTO, the type of alkali and the solvent composition on quaternaization were studied. The X ray differaction, DTA and IR spectra of pure CMC and TOPCMC were investigated. [更多还原