State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, 510641 Guangzhou, China.
Wallenberg Wood Science Center, Department of Fiber and Polymer Technology, KTH Royal Institute of Technology, 10044 Stockholm, Sweden.
Int J Biol Macromol. 2023 Dec 31;253(Pt 8):127367. doi: 10.1016/j.ijbiomac.2023.127367. Epub 2023 Oct 13.
In this work, we investigate a multicomponent synthetic method for combining saccharides with cellulose to produce saccharide branched cellulose (b-Cel). First, cellulose is modified conventionally using carboxymethyl to create carboxyl functional groups for multicomponent reactions. The Passerini three-component reaction (Passerini-3CR) is then used to synthesize the saccharide b-Cel, with particular attention paid to the scope of the substrate and reaction process optimization. The structure of saccharide b-Cel is regulated by modifying the carboxyl group of cellulose molecules, the kind of saccharide molecules (including glucose, galactose, lactose, cellobiose, and cellulose), and the degree of branching. The branched structure of saccharide b-Cel greatly influenced its rheological characteristics and solubility. This work presents a practical method for the synthesis of artificial branching polysaccharides and is crucial for the development of innovative materials based on biomass.
在这项工作中，我们研究了一种将糖类与纤维素结合起来合成糖支化纤维素（b-Cel）的多组分合成方法。首先，通过常规的羧甲基化修饰纤维素，为多组分反应创造羧基官能团。然后，使用 Passerini 三组分反应（Passerini-3CR）来合成糖支化纤维素 b-Cel，特别关注底物的范围和反应过程的优化。通过修饰纤维素分子的羧基基团、糖分子的种类（包括葡萄糖、半乳糖、乳糖、纤维二糖和纤维素）以及支化程度来调节糖支化纤维素 b-Cel 的结构。糖支化纤维素 b-Cel 的支化结构极大地影响了其流变特性和溶解度。这项工作为人工支化多糖的合成提供了一种实用的方法，对基于生物质的创新材料的发展至关重要。
