使用二氧化碳可切换极性溶剂的纤维素水凝胶简易再生工艺。

IF 7.5 2区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY ChemSusChem Pub Date : 2024-11-02 DOI:10.1002/cssc.202401848
Arata Matsui, Deandra Ayu Putri, Morgan L Thomas, Yuko Takeoka, Masahiro Rikukawa, Masahiro Yoshizawa-Fujita
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引用次数: 0

摘要

纤维素是植物细胞壁的主要成分之一,在地球上含量丰富,而且获取成本低廉。此外,人们对其在环保、碳中性和可持续材料中的应用越来越感兴趣。随着简单加工方法的开发,纤维素的应用范围有望扩大。在本研究中,我们将纤维素溶解在 N-丁基-N-甲基吡咯烷氢氧化物水溶液([C4mpyr][OH]/H2O)中,并根据加入二氧化碳气体后溶解度的变化研究了纤维素的再生过程。我们通过向[C4mpyr][OH]/H2O 中通入二氧化碳气体,研究了阴离子化学结构的变化对纤维素溶解度的影响,并进行了 pH 值、傅立叶变换红外光谱和 13C NMR 测量。我们观察到,阴离子结构的变化可以调节纤维素在 [C4mpyr][OH]/H2O 中的溶解度,从而建立了一种简单安全的纤维素再生工艺。这种再生工艺还可用于生产纤维素水凝胶。与使用相同溶解溶剂并添加交联剂生产的类似水凝胶相比,使用该方法生产的水凝胶具有更高的机械强度。生产具有不同机械性能的纤维素水凝胶的能力有望扩大其可能的应用范围。
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A Simple Regeneration Process Using a CO2-Switchable-Polarity Solvent for Cellulose Hydrogels.

Cellulose is one of the main components of plant cell walls, abundant on earth, and can be acquired at a low cost. Furthermore, there has been increasing interest in its use in environmentally friendly, carbon-neutral, sustainable materials. It is expected that the applications of cellulose will expand with the development of a simple processing method. In this study, we dissolved cellulose in aqueous N-butyl-N-methylpyrrolidinium hydroxide solution ([C4mpyr][OH]/H2O) and investigated the cellulose regeneration process based on changes in solubility upon application of CO2 gas. We investigated the effect of transformation of the anion chemical structure on cellulose solubility by flowing CO2 gas into [C4mpyr][OH]/H2O and conducted pH, FT-IR, and 13C NMR measurements. We observed that the changes in anion structure allowed for the modulation of cellulose solubility in [C4mpyr][OH]/H2O, thus establishing a simple and safe cellulose regeneration process. This regeneration process was also applied to enable the production of cellulose hydrogels. The hydrogel formed using this method was revealed to have higher mechanical strength than an analogous hydrogel produced using the same dissolution solvent with the addition of a cross-linker. The ability to produce cellulose-based hydrogels of different mechanical properties is expected to expand the possible applications.

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来源期刊
ChemSusChem
ChemSusChem 化学-化学综合
CiteScore
15.80
自引率
4.80%
发文量
555
审稿时长
1.8 months
期刊介绍: ChemSusChem Impact Factor (2016): 7.226 Scope: Interdisciplinary journal Focuses on research at the interface of chemistry and sustainability Features the best research on sustainability and energy Areas Covered: Chemistry Materials Science Chemical Engineering Biotechnology
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