Page 31 - 精细化工2019年第8期

第 36 卷第 8 期 精 细 化 工 Vol.36, No.8
201 9 年 8 月 FINE CHEMICALS Aug. 2019

功能材料
热缔合型阳离子纤维素的制备及性能

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邱日圆，具本植 ，张淑芬
（大连理工大学 精细化工国家重点实验室，辽宁 大连 116023）

摘要：以羟乙基纤维素（HEC）、正丁基缩水甘油醚（BGE）和 2,3-环氧丙基三甲基氯化铵（GTA）为原料，通
过改变纤维素衍生物亲水基和疏水基的比例调控亲水-亲油平衡的方法制备了热缔合型阳离子纤维素（TACC）。
首先，HEC 与 BGE 反应制备了疏水化纤维素（HBPEC）；然后，HBPEC 与不同质量的 GTA 反应制备了 4 种不
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同 GTA 取代度的热缔合型阳离子纤维素（TACC）。采用 FTIR、 HNMR、元素分析对 TACC 进行了表征，证实
TACC 上已成功接枝了 BGE 和 GTA。考察了 GTA 取代度、TACC 质量浓度、NaCl 浓度及剪切速率对 TACC 温
敏增稠性能的影响。结果表明：40 ℃下，当 GTA 的取代度从 0.12 增加到 0.32 时，15 g/L 的 TACC 水溶液的最
大黏度（η max ）从 13 mPa·s 增大到 54 mPa·s，最大与最小黏度比（η max /η min ）从 1.5 增加到 7.0，与最大黏度对应
的温度（T max ）从 25 ℃升高到 40 ℃；TACC 浓度的增大使水溶液黏度及温敏增稠性能提高；相反地，NaCl 浓
度的增加会使 TACC 水溶液的黏度和温敏增稠性能降低，且会使 T max 减小。
关键词：阳离子纤维素；温敏增稠；亲水-亲油平衡；热缔合；功能材料
中图分类号：TQ352.79 文献标识码：A 文章编号：1003-5214 (2019) 08-1519-06

Synthesis and Properties of Thermo-associative Cationic Cellulose

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QIU Ri-yuan, JU Ben-zhi , ZHANG Shu-fen
（State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, Liaoning, China）

Abstract: Hydroxyethyl cellulose (HEC), butyl glycidylether (BGE) and 2,3-epoxypropyl trimethyl
ammonium chloride (GTA) were used as raw materials to synthesize thermo-associative cationic cellulose
(TACC) by changing the ratio of hydrophilic and hydrophobic groups of cellulose derivatives to adjust the
hydrophilic-lipophilic equilibrium. Firstly, HEC reacted with hydrophobic reagent BGE to prepare
hydrophobic cellulose (HBPEC), and further reacted with cationic reagent GTA of different mass to prepare
four kinds of thermo-associative cationic cellulose (TACC) with different degrees of substitution of GTA.
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The obtained products were characterized by FTIR, HNMR and elemental analyses.The results showed
that BGE and GTA were successfully grafted onto TACC. The influences of substitution degree of GTA,
mass concentration of TACC,concentration of NaCl and the shear rate on the thermothickening properties of
TACC were investigated.The results showed that when the substitution degree of GTA increased from 0.12
to 0.32 at 40 ℃, the maximum viscosity (η max) value of 15 g/L TACC aqueous solution increased from 13
mPa·s to 54 mPa·s, the ratio of maximum and minimum viscosity(η max /η min ) increased from 1.5 to 7.0, and the
temperature corresponding to the maximum viscosity (T max) increased from 25 ℃ to 40 ℃. The increase of
TACC concentration inaqueous solution enhanced its viscosity and thermothickening properties. On the
contrary, the increase of NaCl concentration reduced the viscosity and thermothickening properties of
TACC aqueous solution, and decreased T max.
Key words: cationic cellulose; thermothickening; hydrophilic-lipophilic equilibrium; thermo-associative;
functional materials

收稿日期：2019-01-17; 定用日期：2019-03-25; DOI: 10.13550/j.jxhg.20190056
基金项目：国家自然科学基金（21376041，21878036）
作者简介：邱日圆（1992—），女，硕士生，E-mail：1837102260@qq.com。联系人：具本植（1962—），男，教授，E-mail：jubenzhi@
dlut. edu. cn。