|
|||||
|
|
| 羟丙基瓜尔胶在离子液体中的制备 | |
| 引用本文： | 战振生,尹恒,杜彬,康如坤,崔平.羟丙基瓜尔胶在离子液体中的制备[J].化学研究与应用,2012,24(9):1461-1464. |
| 作者姓名： | 战振生 尹恒 杜彬 康如坤 崔平 |
| 作者单位： | 1. 四川大学高分子研究所,四川成都,610065 2. 京昆油田科技开发公司,江苏昆山,215300 3. 中国石油华北油田分公司,河北任丘,062552 |
| 摘 要： | 本文以离子液体1-烯丙基-3-甲基咪唑氯盐(AmimCl)为反应介质,以氢氧化钠为催化剂合成了羟丙基瓜尔胶(HPG),并通过1H NMR确定了产品的摩尔取代度。探讨了水的用量、环氧丙烷的用量、反应温度和反应时间对摩尔取代度的影响。在水与瓜尔胶的质量比为1.7、氢氧化钠与瓜尔胶的质量比为5%、环氧丙烷与瓜尔胶的质量比为3.5、反应温度为60℃和反应时间为12h的条件下,摩尔取代度(MS)可以达到0.76。同时发现在不加催化剂NaOH的情况下,瓜尔胶在AmimCl中的羟丙基化反应同样可以发生,只是得到的HPG的MS相对较小。 |
| 关 键 词： | 羟丙基瓜尔胶 离子液体 摩尔取代度 1-烯丙基-3-甲基咪唑氯盐 |
Preparation of hydroxypropyl guar gum in ionic liquid |
|
| ZHAN Zhen-sheng , YIN Heng , DU Bin , KANG Ru-kun , CUI Ping.Preparation of hydroxypropyl guar gum in ionic liquid[J].Chemical Research and Application,2012,24(9):1461-1464. | |
| Authors: | ZHAN Zhen-sheng YIN Heng DU Bin KANG Ru-kun CUI Ping |
| Institution: | 1(1.Polymer Research Institute,Sichuan University,Chengdu 610065,China; 2.JingKun Chemistry Company,Kunshan 215300,China; 3.HuaBei Oilfield Branch of PetroChina,Renqiu 062552,China) |
| Abstract: | In this paper,hydroxypropyl guar gum(HPG)was successfully prepared in an ionic liquid 1-allyl-3-methylimidazolium chloride with sodium hydroxide as catalyst,and the molar substitution degree(MS)was determined by means of 1H NMR spectroscopy.The effects of the dosage of the water,the dosage of the propylene oxide,reaction temperature and reaction time on MS of HPG were investigated.The HPG with the MS value of 0.76 could be obtained under conditions of the mass ratio of water to guar gum 1.7,that of NaOH to guar gum 5%,that of propylene oxide to guar gum 3.5 when the reaction was heated at 60℃ for 12h.In addition,the hydroxypropylation of the guar gum could be carried out without NaOH as catalyst using AmimCl as a reaction medium. hydroxypropyl guar gum;ionic liquid;the molar substitution degree;1-allyl-3-methylimidazolium chloride |
| Keywords: | hydroxypropyl guar gum ionic liquid the molar substitution degree 1-allyl-3-methylimidazolium chloride |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |