引用本文:
张黎明, 李卓美. 水溶性两性纤维素衍生物Ⅰ.羧甲基纤维素的季铵化[J]. 应用化学,
1998, 15(4): 5-8.
Citation: Zhang Liming, Li Zhuomei. Water-Soluble Amphoteric Cellulose Derivatives Ⅰ.Quaternary Ammonium Cationization of Carboxymethylcellulose[J]. Chinese Journal of Applied Chemistry, 1998, 15(4): 5-8.
Citation: Zhang Liming, Li Zhuomei. Water-Soluble Amphoteric Cellulose Derivatives Ⅰ.Quaternary Ammonium Cationization of Carboxymethylcellulose[J]. Chinese Journal of Applied Chemistry, 1998, 15(4): 5-8.
水溶性两性纤维素衍生物Ⅰ.羧甲基纤维素的季铵化
摘要:
以羧甲基纤维素(CMC)为原料、3-氯-2-羟两基三甲基氯化铵(CHPAC)为季铵化剂,合成了一系列水溶性两性纤维素衍生物.研究了CMC季镇化反应的主要影响因素,发现不同的原料羧甲基取代度、反应用碱量、CHPAC用量及反应介质组成对CMC季铵取代度和CMC季铵化反应效率均有不同的影响,同时对原料CMC及其产物的IR、X光衍射和DSC谱图与溶液粘性行为进行了研究.
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关键词:
- 水溶性两性纤维衍生物
- / 季铵化
- / 羧甲基纤维素
- / 溶液行为
English
Water-Soluble Amphoteric Cellulose Derivatives Ⅰ.Quaternary Ammonium Cationization of Carboxymethylcellulose
Abstract:
A series of water-soluble amphoteric cellulose derivatives were prepared by quaternary ammonium cationization of carboxymethylcellulose (CMC) in aqueous sodium hydroxide or potassium hydroxide by using 3-chloro-2-hydroxypropyltrime chloride (CHPAC) as the cationic monomer in isopropanol-water mixture. The quaternarization reaction was studied with respect to the drgree of substitution of quaternary ammonium (DSQ) of canonized CMC and the reaction efficiency of quaternarization variables studied included the content of carboxymethyl groups in CMC, the type and amount of alkali, the amount of CHPAC and the solvent composition. The IR, X-ray diffraction and DSC spectra of pure CMC and the quaternized CMC with different DSQ were investigated and their be-haviour in aqueous solution was studied by viscosity measurements.
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