• 文献检索
  • 文档翻译
  • 深度研究
  • 学术资讯
  • Suppr Zotero 插件Zotero 插件
  • 邀请有礼
  • 套餐&价格
  • 历史记录
应用&插件
Suppr Zotero 插件Zotero 插件浏览器插件Mac 客户端Windows 客户端微信小程序
定价
高级版会员购买积分包购买API积分包
服务
文献检索文档翻译深度研究API 文档MCP 服务
关于我们
关于 Suppr公司介绍联系我们用户协议隐私条款
关注我们

Suppr 超能文献

核心技术专利：CN118964589B侵权必究
粤ICP备2023148730 号-1Suppr @ 2026

文献检索

告别复杂PubMed语法，用中文像聊天一样搜索，搜遍4000万医学文献。AI智能推荐，让科研检索更轻松。

立即免费搜索

文件翻译

保留排版，准确专业，支持PDF/Word/PPT等文件格式，支持 12+语言互译。

免费翻译文档

深度研究

AI帮你快速写综述，25分钟生成高质量综述，智能提取关键信息，辅助科研写作。

立即免费体验

WtF-Nano：离子液体或γ-戊内酯中纳米纤维素的一锅脱水和无水电荷转移拓扑修饰。

WtF-Nano: One-Pot Dewatering and Water-Free Topochemical Modification of Nanocellulose in Ionic Liquids or γ-Valerolactone.

机构信息

Chemistry Department, University of Helsinki, AI Virtasen Aukio 1, Helsinki, 00014, Finland.

Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, Espoo, 00076, Finland.

出版信息

ChemSusChem. 2017 Dec 22;10(24):4879-4890. doi: 10.1002/cssc.201701344. Epub 2017 Nov 24.

DOI:10.1002/cssc.201701344
PMID:29112334
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5765465/
Abstract

Ionic liquids are used to dewater a suspension of birch Kraft pulp cellulose nanofibrils (CNF) and as a medium for water-free topochemical modification of the nanocellulose (a process denoted as "WtF-Nano"). Acetylation was applied as a model reaction to investigate the degree of modification and scope of effective ionic liquid structures. Little difference in reactivity was observed when water was removed, after introduction of an ionic liquid or molecular co-solvent. However, the viscoelastic properties of the CNF suspended in two ionic liquids show that the more basic, but non-dissolving ionic liquid, allows for better solvation of the CNF. Vibrio fischeri bacterial tests show that all ionic liquids in this study were harmless. Scanning electron microscopy and wide-angle X-ray scattering on regenerated samples show that the acetylated CNF is still in a fibrillar form. 1 D and 2 D NMR analyses, after direct dissolution in a novel ionic liquid electrolyte solution, indicate that both cellulose and residual xylan on the surface of the nanofibrils reacts to give acetate esters.

摘要

离子液体被用于对桦木硫酸盐浆纤维素纳米纤维（CNF）悬浮液进行脱水，并作为纳米纤维素无水电化学改性的介质（一种称为“WtF-Nano”的工艺）。乙酰化被用作模型反应，以研究改性程度和有效离子液体结构的范围。在引入离子液体或分子共溶剂后除去水时，反应性几乎没有差异。然而，悬浮在两种离子液体中的 CNF 的粘弹性性质表明，碱性更强但不溶解的离子液体能够更好地溶解 CNF。弧菌 Fischeri 细菌测试表明，本研究中的所有离子液体均无害。再生样品的扫描电子显微镜和广角 X 射线散射表明，乙酰化的 CNF 仍呈纤维状。在新型离子液体电解质溶液中直接溶解后的 1D 和 2D NMR 分析表明，纤维素和纳米纤维表面上的残余木聚糖均反应生成醋酸酯。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b33d/5765465/b477af40af9f/CSSC-10-4879-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b33d/5765465/33a00bc3e8f5/CSSC-10-4879-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b33d/5765465/d7f473093f45/CSSC-10-4879-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b33d/5765465/d3c577b1740b/CSSC-10-4879-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b33d/5765465/090f5fae5bd4/CSSC-10-4879-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b33d/5765465/4261f55ffca4/CSSC-10-4879-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b33d/5765465/b064ba0ab137/CSSC-10-4879-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b33d/5765465/aeda896bd592/CSSC-10-4879-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b33d/5765465/9d35d4115cc6/CSSC-10-4879-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b33d/5765465/82490550f807/CSSC-10-4879-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b33d/5765465/8251b8caec5b/CSSC-10-4879-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b33d/5765465/0c4b3650861f/CSSC-10-4879-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b33d/5765465/33d4dd16ee78/CSSC-10-4879-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b33d/5765465/1cc3a3ab0fe1/CSSC-10-4879-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b33d/5765465/b477af40af9f/CSSC-10-4879-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b33d/5765465/33a00bc3e8f5/CSSC-10-4879-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b33d/5765465/d7f473093f45/CSSC-10-4879-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b33d/5765465/d3c577b1740b/CSSC-10-4879-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b33d/5765465/090f5fae5bd4/CSSC-10-4879-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b33d/5765465/4261f55ffca4/CSSC-10-4879-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b33d/5765465/b064ba0ab137/CSSC-10-4879-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b33d/5765465/aeda896bd592/CSSC-10-4879-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b33d/5765465/9d35d4115cc6/CSSC-10-4879-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b33d/5765465/82490550f807/CSSC-10-4879-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b33d/5765465/8251b8caec5b/CSSC-10-4879-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b33d/5765465/0c4b3650861f/CSSC-10-4879-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b33d/5765465/33d4dd16ee78/CSSC-10-4879-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b33d/5765465/1cc3a3ab0fe1/CSSC-10-4879-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b33d/5765465/b477af40af9f/CSSC-10-4879-g014.jpg

相似文献

1
WtF-Nano: One-Pot Dewatering and Water-Free Topochemical Modification of Nanocellulose in Ionic Liquids or γ-Valerolactone.WtF-Nano：离子液体或γ-戊内酯中纳米纤维素的一锅脱水和无水电荷转移拓扑修饰。
ChemSusChem. 2017 Dec 22;10(24):4879-4890. doi: 10.1002/cssc.201701344. Epub 2017 Nov 24.
2
Effect of Antisolvent Used to Regenerate Cellulose Treated with Ionic Liquid on Its Properties.用于再生经离子液体处理的纤维素的抗溶剂对其性能的影响。
Molecules. 2024 Sep 6;29(17):4227. doi: 10.3390/molecules29174227.
3
High-purity cellulose production from birch wood by γ-valerolactone/water fractionation and IONCELL-P process.采用γ-戊内酯/水分级法和 IONCELL-P 工艺从桦木生产高纯度纤维素。
Carbohydr Polym. 2022 Jul 15;288:119364. doi: 10.1016/j.carbpol.2022.119364. Epub 2022 Mar 19.
4
Transparent films by ionic liquid welding of cellulose nanofibers and polylactide: Enhanced biodegradability in marine environments.通过纤维素纳米纤维与聚乳酸的离子液体焊接制备的透明薄膜：在海洋环境中增强的生物降解性
J Hazard Mater. 2021 Jan 15;402:124073. doi: 10.1016/j.jhazmat.2020.124073. Epub 2020 Sep 22.
5
Coaxial Spinning of All-Cellulose Systems for Enhanced Toughness: Filaments of Oxidized Nanofibrils Sheathed in Cellulose II Regenerated from a Protic Ionic Liquid.用于增强韧性的全纤维素体系的同轴纺丝：质子离子液体再生的纤维素II包覆的氧化纳米原纤长丝
Biomacromolecules. 2020 Feb 10;21(2):878-891. doi: 10.1021/acs.biomac.9b01559. Epub 2020 Jan 14.
6
Mixtures of ionic liquids as more efficient media for cellulose dissolution.离子液体混合物作为更有效的纤维素溶解介质。
Carbohydr Polym. 2017 Dec 15;178:277-285. doi: 10.1016/j.carbpol.2017.09.025. Epub 2017 Sep 9.
7
Influence of water on swelling and dissolution of cellulose in 1-ethyl-3-methylimidazolium acetate.乙酸 1-乙基-3-甲基咪唑中的水对纤维素溶胀和溶解的影响。
Carbohydr Polym. 2014 Jan;99:438-46. doi: 10.1016/j.carbpol.2013.08.042. Epub 2013 Aug 26.
8
Dissolution and Hydrolysis of Bleached Kraft Pulp Using Ionic Liquids.使用离子液体对漂白硫酸盐浆进行溶解和水解
Polymers (Basel). 2019 Apr 12;11(4):673. doi: 10.3390/polym11040673.
9
Preparation of Nanocellulose Using Ionic Liquids: 1-Propyl-3-Methylimidazolium Chloride and 1-Ethyl-3-Methylimidazolium Chloride.使用离子液体制备纳米纤维素：1-丙基-3-甲基咪唑氯化物和 1-乙基-3-甲基咪唑氯化物。
Molecules. 2020 Mar 28;25(7):1544. doi: 10.3390/molecules25071544.
10
Solvation of a Cellulose Microfibril in Imidazolium Acetate Ionic Liquids: Effect of a Cosolvent.纤维素微纤丝在醋酸咪唑鎓离子液体中的溶剂化作用：助溶剂的影响。
J Phys Chem B. 2014 Dec 26;118(51):14860-9. doi: 10.1021/jp508113a. Epub 2014 Dec 11.

引用本文的文献

1
Solution-state nuclear magnetic resonance spectroscopy of crystalline cellulosic materials using a direct dissolution ionic liquid electrolyte.使用直接溶解的离子液体电解质对晶态纤维素材料进行溶液态核磁共振波谱学研究。
Nat Protoc. 2023 Jul;18(7):2084-2123. doi: 10.1038/s41596-023-00832-9. Epub 2023 May 26.
2
Understanding Nanocellulose-Water Interactions: Turning a Detriment into an Asset.理解纳米纤维素-水相互作用：变害为利。
Chem Rev. 2023 Mar 8;123(5):1925-2015. doi: 10.1021/acs.chemrev.2c00611. Epub 2023 Feb 1.
3
Deconstruction and Reassembly of Renewable Polymers and Biocolloids into Next Generation Structured Materials.

本文引用的文献

1
Analysis of the Cybotactic Region of Two Renewable Lactone-Water Mixed-Solvent Systems that Exhibit Synergistic Kamlet-Taft Basicity.对两种表现出协同Kamlet-Taft碱度的可再生内酯-水混合溶剂体系的离液序列区域的分析。
J Phys Chem B. 2016 May 19;120(19):4467-81. doi: 10.1021/acs.jpcb.6b03090. Epub 2016 May 9.
2
Solution-State One- and Two-Dimensional NMR Spectroscopy of High-Molecular-Weight Cellulose.高分子量纤维素的溶液态一维和二维核磁共振光谱
ChemSusChem. 2016 Apr 21;9(8):880-92. doi: 10.1002/cssc.201501511. Epub 2016 Mar 24.
3
NMR characterization of cellulose acetate: chemical shift assignments, substituent effects, and chemical shift additivity.
可再生聚合物和生物胶体的解构与重组，用于下一代结构材料。
Chem Rev. 2021 Nov 24;121(22):14088-14188. doi: 10.1021/acs.chemrev.0c01333. Epub 2021 Aug 20.
4
Chemical Modification of Reducing End-Groups in Cellulose Nanocrystals.纤维素纳米晶还原端基的化学修饰。
Angew Chem Int Ed Engl. 2021 Jan 4;60(1):66-87. doi: 10.1002/anie.202002433. Epub 2020 Sep 9.
NMR 对醋酸纤维素的特征分析：化学位移分配、取代基效应和化学位移加和性。
Carbohydr Polym. 2015 Mar 15;118:91-100. doi: 10.1016/j.carbpol.2014.11.004. Epub 2014 Nov 15.
4
Green process for chemical functionalization of nanocellulose with carboxylic acids.用羧酸对纳米纤维素进行化学功能化的绿色工艺。
Biomacromolecules. 2014 Dec 8;15(12):4551-60. doi: 10.1021/bm5013458. Epub 2014 Nov 12.
5
Amphiphilic and phase-separable ionic liquids for biomass processing.用于生物质加工的两亲性和相分离离子液体。
ChemSusChem. 2014 May;7(5):1422-34. doi: 10.1002/cssc.201301261. Epub 2014 Mar 11.
6
Nonenzymatic sugar production from biomass using biomass-derived γ-valerolactone.利用生物质衍生的γ-戊内酯从生物质中生产非酶糖。
Science. 2014 Jan 17;343(6168):277-80. doi: 10.1126/science.1246748.
7
Control of size and viscoelastic properties of nanofibrillated cellulose from palm tree by varying the TEMPO-mediated oxidation time.通过改变 TEMPO 介导的氧化时间来控制来自棕榈树的纳米原纤纤维素的尺寸和粘弹性性质。
Carbohydr Polym. 2014 Jan;99:74-83. doi: 10.1016/j.carbpol.2013.08.032. Epub 2013 Aug 20.
8
Predicting cellulose solvating capabilities of acid-base conjugate ionic liquids.预测酸碱共轭离子液体的纤维素溶解能力。
ChemSusChem. 2013 Nov;6(11):2161-9. doi: 10.1002/cssc.201300143. Epub 2013 Sep 18.
9
Role of solvent parameters in the regeneration of cellulose from ionic liquid solutions.溶剂参数在从离子液体溶液中再生纤维素中的作用。
Biomacromolecules. 2012 Sep 10;13(9):2896-905. doi: 10.1021/bm300912y. Epub 2012 Aug 20.
10
Distillable acid-base conjugate ionic liquids for cellulose dissolution and processing.用于纤维素溶解和加工的可蒸馏酸碱共轭离子液体。
Angew Chem Int Ed Engl. 2011 Jul 4;50(28):6301-5. doi: 10.1002/anie.201100274. Epub 2011 May 23.