碱/脲体系再生纤维素材料的取向调控、表征及高性能化研究进展

许娟娟; 杨婷婷; 傅晓童; 叶凯艳; 叶冬冬

doi:10.11777/j.issn1000-3304.2026.26041

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碱/脲体系再生纤维素材料的取向调控、表征及高性能化研究进展

综述 | 更新时间：2026-06-15

- 碱/脲体系再生纤维素材料的取向调控、表征及高性能化研究进展
- Progress in Aligned Structural Regulation, Characterization, and High‑performance of Regenerated Cellulose Materials from Alkali/Urea Aqueous System
- 高分子学报 2026年页码：1-12
- 作者机构：
  
  安徽农业大学材料与化学学院合肥 230036
- 作者简介：
  
  叶冬冬，男，1990年生. 安徽农业大学材料与化学学院教授，生物质基可持续材料团队PI. 2018年于武汉大学高分子系获得理学博士学位(导师张俐娜教授). 2018~2023年在五邑大学纺织学院担任副教授. 2023年至今在安徽农业大学材料与化学学院担任教授. 主持国家自然科学基金面上和青年基金项目(C类)项目各1项；获安徽省优秀青年基金项目计划(2024年)及中国化学会纤维素与生物质化学委员会“青年学者奖”(2025年). 现任中国纤维素行业协会会员，Science Bulletin、《科学通报》、《纺织学报》等期刊青年编委，以通讯作者在Nat. Commun., Adv. Mater., Adv. Energy Mater.等期刊上发表研究论文35篇，他引超3000次，H-index 30，授权国家发明专利11项. 主要研究领域为纤维素的聚集态结构与性能.
- 基金信息：
  
  国家自然科学基金(基金号52473090;52503126);安徽省自然科学基金(基金号2408085Y025;2508085QE172)
- DOI：10.11777/j.issn1000-3304.2026.26041
  中图分类号：
- CSTR：32057.14.GFZXB.2026.7599
- 收稿：2026-02-06，
  
  录用：2026-03-31，
  
  网络首发：2026-06-15，
- 稿件说明：
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许娟娟, 杨婷婷, 傅晓童, 叶凯艳, 叶冬冬. 碱/脲体系再生纤维素材料的取向调控、表征及高性能化研究进展. 高分子学报, doi: 10.11777/j.issn1000-3304.2026.26041.

Xu, J. J.; Yang, T. T.; Fu, X. T.; Ye K. Y.; Ye, D. D. Progress in aligned structural regulation, characterization, and high‑performance of regenerated cellulose materials from alkali/urea aqueous system. Acta Polymerica Sinica (in Chinese), doi: 10.11777/j.issn1000-3304.2026.26041.
许娟娟, 杨婷婷, 傅晓童, 叶凯艳, 叶冬冬. 碱/脲体系再生纤维素材料的取向调控、表征及高性能化研究进展. 高分子学报, doi: 10.11777/j.issn1000-3304.2026.26041. DOI： CSTR： 32057.14.GFZXB.2026.7599.

Xu, J. J.; Yang, T. T.; Fu, X. T.; Ye K. Y.; Ye, D. D. Progress in aligned structural regulation, characterization, and high‑performance of regenerated cellulose materials from alkali/urea aqueous system. Acta Polymerica Sinica (in Chinese), doi: 10.11777/j.issn1000-3304.2026.26041. DOI： CSTR： 32057.14.GFZXB.2026.7599.

摘要

再生纤维素材料的高性能化，核心在于对其聚集态结构，特别是分子链长程有序排列的精准调控. 然而，传统再生过程中受限于分子链强烈的无序聚集倾向，难以实现微观结构的定向组装. 碱/脲水溶液体系通过形成动态包合物实现了纤维素的低温非衍生化溶解，为构筑有序结构提供了理想的均相前驱体. 近年来，基于该体系确立了氢键屏蔽作用下“交联网络取向”策略：即在纤维素分子链处于动态包合物稳定的溶解状态、分子内与分子间氢键相互作用被暂时屏蔽的条件下，通过化学交联构建共价拓扑网络，实现体系由单链随机运动向网络协同形变的机制转变；继而利用外场诱导分子链有序取向，并借由包合物解离所触发的氢键重构，将取向结构永久固定. 本文综述了交联网络拓扑对分子链构象的调控机制，归纳了流场、机械及微流控等取向诱导方法；重点阐述了高取向结构在克服强韧矛盾及提升功能特性方面的构效关系. 此外，结合显微拉曼成像技术在原位解析多尺度取向分布及微观应力传递方面的进展，突显了其在揭示“结构-性能”关联中的独特优势，并展望了该领域的发展趋势.

Abstract

High-performance regenerated cellulose materials rely on the precise regulation of aggregate structures

particularly the long-range ordered alignment of molecular chains. However

conventional regeneration is generally hindered by cellulose chains' strong tendency toward disordered aggregation

making it difficult to achieve directional assembly of microstructures. The alkali/urea aqueous system provides an ideal precursor for alignment via dynamic inclusion complexes

enabling the low-temperature non-derivatizing dissolution of cellulose and thereby offering an ideal homogeneous precursor for the construction of ordered structures. Recently

an "oriented crosslinked network" strategy has been established based on this system under hydrogen-bond shielding. In this strategy

cellulose chains remain dissolved

via

dynamic inclusion complexes

while intra- and intermolec

ular hydrogen-bond interactions are temporarily screened. Chemical crosslinking is then used to construct a covalent topological network

transforming the deformation mechanism from the random motion of individual chains to the cooperative deformation of the network. Subsequently

external fields are employed to induce orientation

followed by the permanent locking of the aligned structure

via

hydrogen bond reconstruction triggered by the dissociation of inclusion complexes. This review summarizes the mechanisms by which crosslinked network topology regulates molecular-chain conformation and discusses orientation-induction methods

including flow fields

mechanical stretching

and microfluidic techniques. Particular emphasis is placed on how highly oriented structures can overcome the strength‒toughness trade-off and improve functional properties. In addition

recent advances in micro-Raman imaging for in situ characterization of multiscale orientation distribution and microscopic stress transfer are highlighted

underscoring its unique advantages in elucidating structure-property relationships. Finally

future prospects in this field are discussed.

关键词

Keywords

references

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