Comparison of dissolution and regeneration structure of collagen with two ionic liquids: [BMIM]Cl and [BMIM]Ac

LIU Jie; ZHAO Shiyu; XU Zhou; CHANG Jinming; CHEN Yi; FAN Haojun

doi:10.11949/j.issn.0438-1157.20141916

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Comparison of dissolution and regeneration structure of collagen with two ionic liquids: [BMIM]Cl and [BMIM]Ac

更新时间：2025-12-10

- Comparison of dissolution and regeneration structure of collagen with two ionic liquids: [BMIM]Cl and [BMIM]Ac
- CIESC Journal Issue 6, Pages: 2196-2204(2015)
- 作者机构：
  
  1. 四川大学皮革化学与工程教育部重点实验室,四川,成都,610065
  2. 四川大学制革清洁技术国家工程实验室,四川,成都,610065
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20141916
  CLC： S59
- Online First：05 June 2015，
  
  Published：05 June 2015
- 稿件说明：
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LIU Jie, ZHAO Shiyu, XU Zhou, et al. Comparison of dissolution and regeneration structure of collagen with two ionic liquids: [BMIM]Cl and [BMIM]Ac[J]. CIESC Journal, 2015, (6): 2196-2204.
DOI：

LIU Jie, ZHAO Shiyu, XU Zhou, et al. Comparison of dissolution and regeneration structure of collagen with two ionic liquids: [BMIM]Cl and [BMIM]Ac[J]. CIESC Journal, 2015, (6): 2196-2204. DOI： 10.11949/j.issn.0438-1157.20141916.

摘要

采用离子交换法

以1-丁基-3-甲基氯代咪唑([BMIM]Cl)为原料合成了咪唑醋酸盐型离子液体([BMIM]Ac)

以两者为溶剂研究了胶原纤维在咪唑类离子液体中的溶解行为及再生前后的结构与热稳定性变化。结果表明

胶原纤维在CH3COO-和Cl-型离子液体中均能溶解

但具有明显不同的溶解特性。相对[BMIM]Cl的溶解性能而言

[BMIM]Ac能够在较低的温度下获得高浓度和良好流动性的胶原溶液

而且再生胶原的三股螺旋结构保留度更高。FTIR、UV、XRD、CD、TG分析结果表明

胶原在咪唑离子液体中溶解前后其化学结构未发生明显变化

而三股螺旋的保留度和热稳定性略有降低。

Abstract

1-butyl-3-methylimidazolium acetate ([BMIM]Ac) was synthesized from 1-butyl-3-methylimidazolium chloride ([BMIM]Cl) via the ion exchange method. These imidazolium ionic liquids (ILs) were used as solvents to dissolve collagen fibers. The solubility and the change of collagen structure as well as thermal stability after dissolution and regeneration from ILs were investigated. Athough collagen fibers could be dissolved in both CH3COO- and Cl- imidazolium ionic liquids

the dissolution characteristics were quite different. Compared with [BMIM]Cl ionic liquid

[BMIM]Ac was more advantageous to achieve a collagen solution with high concentration and good fluidity at a lower temperature

especially in retaining the integrity of collagen triple helix. FTIR

XRD

CD and TG analysis were used to characterize the structure and properties of collagen before and after regeneration

and the results revealed that collagen chemical structure showed almost no change

but with slightly lower thermal stability and integrity of triple helix.

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