天然瓜尔胶粉与醚化剂在乙醇溶液中反应,制备C-GG改性瓜尔胶,考察了反应物料比、反应时间、反应温度等对产品性能的影响.结果表明,合成C-GG改性瓜尔胶的最佳制备条件为:瓜尔胶粉:氢氧化钠:3-氯-2-羟丙基三甲基氯化铵为1:0.2:0.06,反应温度为70℃,反应时间为3h.在最佳反应条件下,得到产品的性能符合标准,粘度达到3650 mPa·s,取代度为0.224.%The C-GG modified guar gum was prepared by reacting guar gum with 3-chloro-2-hydroxypropyl trimethylammonium chloride. The effects of some factors such as the proportion of materials,reaction time, reaction temperature were studied and the proper conditions were determined. The results showed that the best preparation conditions for the synthesis of C-GG modified guar gum were as follows: guar gum powder: sodium hydroxide: 3-chloro-2-hydroxypropyl trimethylammonium chloride is 1:0. 2:0. 06, reac-tion temperature at 70℃ ,and reaction time for 3 h. Under the optimum reaction conditions, get the per-formance of products meet the stand, the viscosity was 3 650 mPa·s and the substitution degree was 0. 224.
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