相关实验视频

Updated: Jul 28, 2025

Pretreatment of Lignocellulosic Biomass with Low-cost Ionic Liquids

Pretreatment of Lignocellulosic Biomass with Low-cost Ionic Liquids

Published on: August 10, 2016

纤维素在一种新的DBU衍生的离子液体中的快速转化:高效合成高度替代的纤维素酸盐

Xiangli Gao¹, Huan Liu², Jianbo Shuai¹

¹State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.

International journal of biological macromolecules

|June 1, 2023

概括

研究人员开发了一种新的DBU衍生的离子液体,用于高效的纤维素酸盐生产. 这种可持续的方法在温和的条件下产生高质量的纤维素酸塑料.

科学领域:

材料科学材料科学材料科学
聚合物化学聚合物化学
绿色化学绿色化学

背景情况:

纤维素酸 (CA) 是一种重要的纤维素塑料,具有广泛的应用.
现有的CA合成方法往往缺乏可持续性和效率.
需要改进的工艺来从可再生资源中生产AC.

研究的目的:

合成一种新的DBU衍生的离子液体[DBUC8]Cl,用于纤维素溶解和CA制备.
与其他离子液体相比,研究[DBUC8]Cl在溶解纤维素中的效率.
开发一种可持续和高效的方法,在温和条件下合成高度替代的AC.

主要方法:

从1,8-diazabicyclo[5.4.0]undecy-7-ene (DBU) 中合成新的离子液体[DBUC8]Cl.
在[DBUC8]Cl.Cl.中溶解纤维素.
在80°C下40分钟[DBUC8]Cl中用基乙对纤维素进行转化,以产生CA.
分析CA的特性,包括热可塑性和薄膜形成.

主要成果:

[DBUC8]Cl由于DBU的强性,与意达酸离子液相比,其纤维素溶解效率更高.
在温和,无催化剂条件下 (80°C,40分钟) 高度替代的CA (DS = 2.82) 得到了高效的合成.
合成的CA具有良好的热可塑性,并且产生了透明的纤维素酸薄膜 (CAF).

结论:

一种新的DBU衍生的离子液体[DBUC8]Cl,为纤维素加工提供了一个高效和可持续的平台.
这种方法为生产高质量的纤维素酸生物塑料提供了更绿色的替代方案.
开发的离子液体系统有可能在生物塑料制造中具有多功能应用.

关键词:

生物塑料的生物塑料纤维素的修饰方法离子液体是一种离子液体.

更多相关视频

A Novel Method for the Pentosan Analysis Present in Jute Biomass and Its Conversion into Sugar Monomers Using Acidic Ionic Liquid

A Novel Method for the Pentosan Analysis Present in Jute Biomass and Its Conversion into Sugar Monomers Using Acidic Ionic Liquid

Published on: June 1, 2018

Green and Low-cost Production of Thermally Stable and Carboxylated Cellulose Nanocrystals and Nanofibrils Using Highly Recyclable Dicarboxylic Acids

Green and Low-cost Production of Thermally Stable and Carboxylated Cellulose Nanocrystals and Nanofibrils Using Highly Recyclable Dicarboxylic Acids

Published on: January 9, 2017

相关概念视频

Alkylation of β-Ketoester Enolates: Acetoacetic Ester Synthesis

Alkylation of β-Ketoester Enolates: Acetoacetic Ester Synthesis

Acetoacetic ester synthesis is a method to obtain ketones from alkyl halides and β-keto esters. The reaction occurs in the presence of an alkoxide base that abstracts the acidic proton of the β-keto esters. The step results in an enolate ion which is doubly stabilized. The enolate then reacts with an alkyl halide via the SN2 process to produce an alkylated ester intermediate with a new C–C bond. The hydrolysis of the intermediate, followed by acidification, results in an...

Alkylation of β-Diester Enolates: Malonic Ester Synthesis

Alkylation of β-Diester Enolates: Malonic Ester Synthesis

Malonic ester synthesis is a method to obtain α substituted carboxylic acids from ꞵ-diesters such as diethyl malonate and alkyl halides.