Yamaji Ayaka, Okuda Yui, Kobayashi Chikaho, Kurahashi Rikako, Kazuma Kyoko, Chiba Kazuki, Hirata Mitsuhiro, Ikemoto Yuka, Osaka Keiichi, Gao Jiacheng, Sato Harumi, Matsuba Go
Graduate School of Organic Material Science, Yamagata University, 4-3-16 Jonan, Yonezawa 992-8510, Yamagata, Japan.
Yamagata Research Institute of Technology, 2-2-21 Shoei, Yamagata City 990-2473, Yamagata, Japan.
Polymers (Basel). 2025 Jul 23;17(15):2015. doi: 10.3390/polym17152015.
Cellulose nanofiber (CNF) treatments can enhance the structure and performance of regenerated cellulose fibers. This study investigates the effects of CNF treatment on the mechanical properties, water absorption behavior, and humidity dependence of regenerated cellulose fibers. Tensile testing demonstrated that CNF-treated fibers exhibit improved elasticity and reduced swelling in aqueous environments. Scanning electron microscopy revealed the adsorption of CNF components onto the fiber surfaces. Microbeam X-ray diffraction indicated structural differences between untreated and CNF-treated fibers, with the latter containing cellulose I crystals. Small-angle X-ray scattering revealed alterations in the internal fibrillar structure due to CNF treatment. FT-IR spectroscopy highlighted humidity-dependent variations in molecular vibrations, with peak intensities increasing under higher humidity conditions. Additionally, CNF treatment inhibited water absorption in high-humidity conditions, contributing to reduced expansion rates and increased elastic modulus during water absorption. Overall, CNF treatment enhanced both the mechanical strength and water resistance of regenerated cellulose fibers, making them suitable for advanced textile applications. This study provides valuable insights into the role of CNF-treated fibers in improving the durability and functional performance of regenerated cellulose-based textile.
纤维素纳米纤维（CNF）处理可以增强再生纤维素纤维的结构和性能。本研究调查了CNF处理对再生纤维素纤维的机械性能、吸水性行为和湿度依赖性的影响。拉伸测试表明，经CNF处理的纤维在水性环境中表现出改善的弹性和减少的膨胀。扫描电子显微镜揭示了CNF成分在纤维表面的吸附。微束X射线衍射表明未处理和经CNF处理的纤维之间存在结构差异，后者含有纤维素I晶体。小角X射线散射揭示了由于CNF处理导致的内部原纤结构的变化。傅里叶变换红外光谱突出了分子振动的湿度依赖性变化，在较高湿度条件下峰强度增加。此外，CNF处理在高湿度条件下抑制了吸水性，有助于降低吸水过程中的膨胀率并提高弹性模量。总体而言，CNF处理增强了再生纤维素纤维的机械强度和耐水性，使其适用于先进的纺织应用。本研究为经CNF处理的纤维在改善再生纤维素基纺织品的耐久性和功能性能方面的作用提供了有价值的见解。
