Cellulose-based functional materials play a crucial role in sustainable social development. However, during the material synthesis process, there is typically significant reliance on various solvent systems for macroscopic- or molecular-scale functionalization modifications. In this study, an innovative hydrophobic eutectic solvent (HES) was developed using ethyl cellulose (EC) and thymol (Thy) without any external solvents. Utilizing this homogeneous system, it is convenient to chemically modify the components without any catalyst. Furthermore, a hydrophobic cellulosic cross-linked network (HCCN) can be successfully prepared through in situ photopolymerization. The HCCN film exhibits high transparency, excellent mechanical properties, chemical stability, and durability. The EC/Thy prepolymer system also demonstrates favorable processability for the preparation of various polymeric materials. Additionally, the applicability of other biomasses and derivatives based on the eutectic strategy has been verified. The methodology proposed in this study offers novel insights into the green and solvent-free preparation of biomass functional materials.

中文翻译：

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无溶剂合成具有广泛多功能应用的疏水性纤维素交联网络的共晶策略


基于纤维素的功能性材料在社会可持续发展中发挥着至关重要的作用。然而，在材料合成过程中，通常严重依赖各种溶剂系统进行宏观或分子尺度的功能化修饰。在这项研究中，使用乙基纤维素 （EC） 和百里香酚 （Thy） 开发了一种创新的疏水性共熔溶剂 （HES），无需任何外部溶剂。利用这种均相系统，无需任何催化剂即可方便地对组分进行化学改性。此外，通过原位光聚合可以成功制备疏水性纤维素交联网络 （HCCN）。HCCN 薄膜具有高透明度、优异的机械性能、化学稳定性和耐用性。EC/Thy 预聚物系统还表现出良好的加工性能，可用于制备各种聚合物材料。此外，基于共晶策略的其他生物质和衍生物的适用性也得到了验证。本研究提出的方法为生物质功能材料的绿色和无溶剂制备提供了新的见解。