Synthesis study on hydroxypropyl cellulose in ionic liquids

KONG Xingjie; JIA Cai; LI Kunlan; LV Xingmei; ZHANG Suojiang

doi:10.3969/j.issn.0438-1157.2013.z1.011

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Synthesis study on hydroxypropyl cellulose in ionic liquids

更新时间：2025-12-10

- Synthesis study on hydroxypropyl cellulose in ionic liquids
- CIESC Journal Issue S1, Pages: 73-79(2013)
- 作者机构：
  
  1. 大连工业大学化学与轻工学院,辽宁,大连,116034
  2. 中国科学院过程工程研究所,北京,100190
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2013.z1.011
  CLC： Q352.72
- Online First：30 December 2013，
  
  Published：30 December 2013
- 稿件说明：
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KONG Xingjie, JIA Cai, LI Kunlan, et al. Synthesis study on hydroxypropyl cellulose in ionic liquids[J]. CIESC Journal, 2013, (S1): 73-79.
DOI：

KONG Xingjie, JIA Cai, LI Kunlan, et al. Synthesis study on hydroxypropyl cellulose in ionic liquids[J]. CIESC Journal, 2013, (S1): 73-79. DOI： 10.3969/j.issn.0438-1157.2013.z1.011.

摘要

使用离子液体1

3-二乙基咪唑磷酸二乙酯盐([EEIM][DEP])为反应溶剂主组分来溶解微晶纤维素进行羟丙基化衍生，微晶纤维素和醚化剂在离子液体中均可形成均相，通过碱化、醚化、酸化及洗涤等步骤制备得到不同取代度的羟丙基纤维素。考察了碱化反应温度、反应原料摩尔比、醚化反应时间及酸化剂的种类对羟丙基纤维素产品的收率和摩尔取代度的影响，并采用红外、核磁、TGA等手段对产品结构进行了表征。

Abstract

In this work

the ionic liquid N-ethyl-N-ethyl-imidazole diethyl phosphate was used as the main solvent to fully dissolve microcrystalline cellulose (MCC) to achieve hydroxypropylization of MCC. Both MCC and the etherifying agent could be homogeneously disolved in the ionic liquid

and hydroxypropyl cellulose(HPC) was prepared through the alkali treatment

etherification and acidification steps to afford the products of different substitution degree. By adjusting the alkalization temperature

molar ratio of reagents

etherification reaction time and the types of acidifiers

the investigation on the yield and the molar substitution degree of HPC was carried out. The structure of products were characterized by 1H NMR

FTIR and TGA etc.

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