文章摘要
阴/阳离子化羟乙基纤维素十二烷基缩水甘油醚的制备与应用
Synthesis and Application of Anionic/Cationic Hydroxyethyl Cellulose Lauryl Glycidol Ethers
  
DOI:10.16865/j.cnki.1000-7555.2018.08.005
中文关键词: 羟乙基纤维素  疏水改性  功能化  粘弹性  乳化剂
英文关键词: hydroxyethyl cellulose  hydrophobic modification  functionalization  viscoelasticity  emulsifier
基金项目:国家自然科学基金资助项目(51773124, 51173121, 51403132)
作者单位
武 萌1, 王相栋1, 张伊伊1, 陈 静1, 吕玉山2, 冉 蓉1 1. 四川大学 高分子科学与工程学院四川 成都 610065
2. 泸州北方纤维素有限公司四川 泸州 646000 
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中文摘要:
      介绍一锅法合成一种羧基化的羟乙基纤维素(HEC)十二烷基缩水甘油醚(CHECGE)和一种季铵化的HEC十二烷基缩水甘油醚(QAHECGE)。利用红外光谱(FT-IR)和核磁共振氢谱(1H-NMR)对产物进行结构表征及平均取代度(DS)的测定。产物的流变性能表征结果表明,CHECGE具有比HEC更强的凝胶行为,在稳态剪切下的表观黏度较HEC有所提高。虽然QAHECGE的凝胶行为和表观黏度小于HEC,但假塑性明显较HEC有所提高。以所得产物及其复合物将橄榄油(20%)在水相中进行乳化,结果显示分别在CHECGE、QAHECGE和CHECGE/QAHECGE(质量比为1∶3)复合物体系乳化下,均能制备出稳定的乳液(超过15 d放置)。因此所得产物可以作为一种新型的大分子乳化剂。
英文摘要:
      A carboxylated hydroxyethyl cellulose (HEC) lauryl glycidol ether (CHECGE) and a quaternary aminated HEC lauryl glycidol ether (QAHECGE) were synthesized by one pot process. The chemical structures of CHECGE and QAHECGE were verified by FT-IR and 1H-NMR, and the average substitutions of various functionalgroups were also calculated. The rheological properties of the products were proved by coaxial rotary viscometer, and the results show that CHECGE solution is more elastic than native HEC solution. Apparent viscosity of CHECGE solution at low shear rate is higher than that of HEC solution. Although elastic behavior and apparent viscosity of QAHECGE solution are lower than HEC, both of the modified HEC solutions are more pseudoplastic than native HEC solution. CHECGE, QAHECGE and their complex blends were used as emulsifiers. The result show that CHECGE, QAHECGE and their blends with the mass ratio of 1∶3 could stabilize 20% olive oil emulsion more than 15 d. As a result, the modified HEC derivatives could be applied as novel emulsifiers.
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