Carbohydrate Polymers最新文献_第5页

Corrigendum to “insights into the digestibility differences of thermostable starches under boiling treatment” [carbohydrate polymers 373 (2026) 124594] “对沸水处理下热稳定性淀粉的消化率差异的见解”[碳水化合物聚合物373(2026)124594]的勘误表

IF 12.5 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2026-01-20 DOI: 10.1016/j.carbpol.2025.124819

Liyang Zhou , Ke Li , David Julian McClements , Rongrong Ma , Xiaohua Pan , Tianyi Yang , Jinling Zhan , Chang Liu , Yaoqi Tian

引用次数: 0

Construction of bilayer asymmetric humidity-regulating packaging using 2-hydroxypropyl trimethyl ammonium chloride chitosan for enhanced strawberry preservation 2-羟丙基三甲基氯化铵壳聚糖构建双层非对称调湿包装增强草莓保鲜

IF 12.5 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2026-01-20 DOI: 10.1016/j.carbpol.2026.124973

Hao Dong , Xing Xu , Keqin Mi , Xin Peng , Frank Ratego , Liping Tong , Shifeng Hou

To ensure high-quality harvested fruits and vegetables, maintaining a stable, high relative humidity is crucial. This study concentrated on the development of an asymmetric double-layer film designed to address the limitations inherent in single-layer films. The film incorporates 2-hydroxypropyl trimethyl ammonium chloride chitosan (HACC) as an autonomous humidity control material. HACC has a water adsorption energy of −2.03 eV, higher than polyvinyl alcohol (PVA), indicating better water absorption. The PVA/HACC film evenly distributes water molecules and has a higher adsorption capacity. HACC enhances adsorption kinetics and equilibrium through a synergistic “hydrogen bond-electrostatic” mechanism and increased free volume. Increasing the HACC concentration to 1.0% elevates the active layer's water absorption capacity to 0.43 g/g. The double-layer film exhibits a remarkably low water vapor permeability of (1.66 ± 0.03) × 10⁻¹¹ g·m/(m²·s·Pa), effectively minimizing moisture exchange. When used for fresh strawberries, compared with the control group, it increased internal relative humidity by 126.54% and reduced the relative humidity variation to 1.62 × 10⁻², effectively extending freshness to 7 days at room temperature. This innovative packaging solution actively regulates humidity, prolonging the freshness of fruits and vegetables. To encourage practical use, it's essential to assess the main challenges of large-scale promotion.

为了保证收获的水果和蔬菜的质量，保持稳定、高的相对湿度是至关重要的。本研究集中于非对称双层薄膜的开发，旨在解决单层薄膜固有的局限性。该薄膜采用2-羟丙基三甲基氯化铵壳聚糖（HACC）作为自主湿度控制材料。HACC的吸水能为- 2.03 eV，高于聚乙烯醇（PVA），具有更好的吸水性。PVA/HACC膜使水分子分布均匀，具有较高的吸附能力。HACC通过协同的“氢键静电”机制和增加的自由体积增强吸附动力学和平衡。当HACC浓度增加到1.0%时，活性层的吸水量提高到0.43 g/g。双层膜的水蒸气渗透率为（1.66±0.03）× 10−11 g·m/(m2·s·Pa)，有效地减少了水分交换。用于草莓鲜时，与对照组相比，内部相对湿度提高了126.54%，相对湿度变化减小到1.62 × 10−2，在室温下有效延长新鲜度至7天。这种创新的包装解决方案积极调节湿度，延长水果和蔬菜的新鲜度。为了鼓励实际应用，有必要评估大规模推广的主要挑战。

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引用次数: 0

Effect of chitosan and alcohol solvents on uniform structural color formation in partially deacetylated nanochitin films 壳聚糖和酒精溶剂对部分去乙酰化纳米几丁质膜均匀结构颜色形成的影响

IF 12.5 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2026-01-20 DOI: 10.1016/j.carbpol.2026.124976

Dagmawi Abebe Zewude , Toshiki Nokami , Masaaki Akamatsu , Shinsuke Ifuku

Cast films of partially deacetylated nanochitin exhibit structural colors originating from interference of reflected light; however, nonuniform convection during drying often induces uneven film thickness and color irregularities. In this study, the effects of additives and solvents were systematically investigated to establish a facile approach for obtaining uniform structural coloration. Chitosan, an ionic polymer with high viscosity, was employed as an additive to suppress the migration of nanochitin during solvent evaporation. Consequently, homogeneous thin films displaying vivid and uniform structural colors were obtained. UV–Vis spectroscopy, FE-SEM, and AFM analyses confirmed that the coloration originated from light interference between the upper and lower surfaces of the films, similar to soap films. The film thickness decreased with the amount of chitosan added, enabling precise control of the reflected hue. Furthermore, the influence of the solvent type was examined. The addition of alcohols such as ethanol and 2-propanol resulted in the formation of more uniform films, attributable to the generation of counterflow to the Marangoni convection caused by their lower boiling points and surface tensions compared with water. These findings demonstrate that the appropriate selection of chitosan concentration and solvent type enables both uniform structural coloration and tunable hue in nanochitin-based films.

部分去乙酰化纳米几丁质的铸造膜表现出由反射光干涉产生的结构颜色；然而，干燥过程中的非均匀对流往往会导致膜厚不均和颜色不规则。在本研究中，系统地研究了添加剂和溶剂的影响，以建立一种简便的方法来获得均匀的结构着色。采用高粘度离子聚合物壳聚糖作为添加剂，抑制纳米甲壳素在溶剂蒸发过程中的迁移。从而得到结构颜色鲜艳均匀的均匀薄膜。紫外可见光谱，FE-SEM和AFM分析证实，颜色源于膜的上下表面之间的光干涉，类似于肥皂膜。随着壳聚糖添加量的增加，薄膜厚度减小，从而可以精确控制反射色相。此外，还考察了溶剂类型的影响。乙醇和2-丙醇等醇类的加入导致了更均匀薄膜的形成，这是由于与水相比，它们的沸点和表面张力较低，从而产生了马兰戈尼对流的逆流。研究结果表明，选择适当的壳聚糖浓度和溶剂类型，可以使纳米壳聚糖基薄膜的结构着色均匀，色调可调。

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引用次数: 0

Exploration of a bioactive oligosaccharide fragment from Saposhnikoviae Radix polysaccharides: preparation, structural characterization, and immunomodulatory mechanism 山参多糖生物活性低聚糖片段的探索：制备、结构表征和免疫调节机制

IF 12.5 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2026-01-20 DOI: 10.1016/j.carbpol.2026.124975

Meng Sun , Yifang Cui , Wenya Ma , Lingwen Cui , Peipei Liang , Miao Liang , Juan Song , Guangzhong Tu , Baiping Ma , Yanyan Jiang , Bin Liu

Exploring bioactive oligosaccharide fragments (the direct mediators of polysaccharide bioactivity in vivo) and elucidating their structures represent a central challenge in polysaccharide research. A bioactive oligosaccharide fragment (named BOF III) was isolated and purified from Saposhnikoviae Radix polysaccharide (SRP) by an immunoactivity-guided screening method. Its structure was characterized by UHPLC-Q-TOF-MS/MS and NMR, and it was identified as an α-1,6-glycosidically linked heptaglucose, structurally defined as isomaltoheptaose. In vitro, BOF III enhanced the immune response by stimulating macrophage proliferation, phagocytosis, and the secretion of cytokines and NO. In cyclophosphamide-induced immunosuppressed mice, it exerted systemic immunomodulatory effects, including restored thymus and spleen indices, improved hematological parameters. Importantly, it demonstrated intestinal barrier-protective effects by repairing mucosal morphology, increasing goblet cells, upregulating tight junction proteins (ZO-1, Occludin), and reducing systemic lipopolysaccharide (LPS) and diamine oxidase (DAO) leakage. Mechanistic investigations indicated that BOF III may exert its immunomodulatory effects involving the intestinal barrier, spleen, and lung, with concurrent effects manifested as intestinal barrier repair, activation of the TLR4/MyD88 pathway in splenic and pulmonary tissues, and regulation of immune-related gene expression. This study not only elucidates the structural basis for the immunomodulatory activity of SRP but also lays the foundation for BOF III transformation into novel immunomodulatory drugs or functional products. Furthermore, this study provides a valuable strategy for investigating bioactive constituents from other polysaccharide-rich herbal medicines.

探索生物活性低聚糖片段（多糖生物活性的直接介质）并阐明其结构是多糖研究的核心挑战。采用免疫活性引导筛选法从山参多糖（SRP）中分离纯化了一个具有生物活性的低聚糖片段（BOF III）。通过UHPLC-Q-TOF-MS/MS和NMR对其结构进行了表征，鉴定为α-1,6-糖苷连接的七糖糖，结构定义为异麦芽糖七糖糖。在体外，BOF III通过刺激巨噬细胞增殖、吞噬、细胞因子和NO的分泌来增强免疫应答。在环磷酰胺诱导的免疫抑制小鼠中，它具有全身免疫调节作用，包括恢复胸腺和脾脏指数，改善血液学参数。重要的是，它通过修复粘膜形态，增加杯状细胞，上调紧密连接蛋白（ZO-1, Occludin），减少全身脂多糖（LPS）和二胺氧化酶（DAO）泄漏，显示出肠道屏障保护作用。机制研究表明，BOF III可能发挥涉及肠屏障、脾和肺的免疫调节作用，同时表现为肠屏障修复、脾和肺组织TLR4/MyD88通路激活以及免疫相关基因表达的调节作用。本研究不仅阐明了SRP免疫调节活性的结构基础，也为BOF III转化为新型免疫调节药物或功能产品奠定了基础。此外，该研究还为研究其他富含多糖的草药的生物活性成分提供了有价值的策略。

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引用次数: 0

Cellulose nanofibers reinforced biomimetic hydrogel featuring orthogonal anisotropic architecture for guiding BMSCs directional migration and osteogenic differentiation 具有正交各向异性结构的纤维素纳米纤维增强仿生水凝胶引导骨髓间充质干细胞定向迁移和成骨分化

IF 12.5 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2026-01-19 DOI: 10.1016/j.carbpol.2026.124965

Xuehui Zhang , Jinming Yao , Wenjing Yan , Jing Chen , Yanru Xue , Xiaogang Wu , Weiyi Chen , Yanqin Wang , Qiang Zheng , Qiang Li

Natural trabecular bone is typically a complex 3D honeycomb-like material, which can influence the behavior of bone marrow mesenchymal stem cells (BMSCs), particularly their migration and differentiation direction. However, engineering such biomimetic hydrogels with an orthogonal anisotropic structure similar with trabecular bone via a universal and scalable manner still poses a great challenge. This study develops a cellulose nanofiber (CNF) reinforced composite hydrogel with an orthogonal anisotropic structure, which exhibits a highly aligned fibrous configuration and structural densification, endowing it with excellent mechanical properties and damage-tolerant architectures. Moreover, compared with the composite hydrogel with uniaxially anisotropic structure, this as-developed composite hydrogel with orthogonal anisotropic structure utilizes the interactions between rigid and flexible components to form an anisotropic network structure in orthogonal directions, mimicking the microscopic interactions between collagen fibers and proteoglycans in natural ECMs. It could not only facilitate the physical alignment and directional migration of BMSCs, but also enhance their proliferation and differentiation into osteoblasts. Overall, replicating the structure and properties of natural trabecular bone enhances insights into cellular mechanisms, but also improves the efficiency of bone regenerative medicine treatments.

天然骨小梁通常是一种复杂的三维蜂窝状材料，它可以影响骨髓间充质干细胞（BMSCs）的行为，特别是它们的迁移和分化方向。然而，如何以通用和可扩展的方式制造这种具有类似小梁骨的正交各向异性结构的仿生水凝胶仍然是一个巨大的挑战。本研究开发了一种正交各向异性结构的纤维素纳米纤维（CNF）增强复合水凝胶，其具有高度排列的纤维构型和结构致密性，使其具有优异的力学性能和耐损伤结构。此外，与单轴各向异性结构的复合水凝胶相比，该正交各向异性结构的复合水凝胶利用刚性和柔性组分之间的相互作用形成正交方向的各向异性网络结构，模拟了天然ecm中胶原纤维和蛋白聚糖之间的微观相互作用。它不仅能促进骨髓间充质干细胞的物理排列和定向迁移，还能促进骨髓间充质干细胞的增殖和向成骨细胞的分化。总之，复制天然小梁骨的结构和特性增强了对细胞机制的认识，也提高了骨再生医学治疗的效率。

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引用次数: 0

Synergistic design of ionic liquid monomers and MOF–cellulose scaffolds for selective protein recognition in molecularly imprinted materials 离子液体单体和mof -纤维素支架在分子印迹材料中选择性蛋白质识别的协同设计

IF 12.5 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2026-01-19 DOI: 10.1016/j.carbpol.2026.124964

Yuxuan Yang , Sufeng Zhang , Lijing Zhang , Nan Zhang , Liwei Qian , Wenqi Song

To address the low binding-site density and mass-transfer limitations of conventional protein-molecularly imprinted polymers (P-MIPs), this study proposes a synergistic strategy combining a custom-synthesized imidazolium ionic liquid monomer, 1-vinyl-3-diacetamidoimidazolium chloride ([VDAIM]Cl), with a bacterial-cellulose@UiO-66 (BC@UiO-66) hybrid scaffold. Spectral characterization and molecular docking simulations revealed multiple strong interactions between [VDAIM]Cl and bovine serum albumin (BSA), enhancing the stability of the pre-polymer complex compared to conventional monomers. Meanwhile, benefiting from the structural advantages of BC, the template immobilization-surface imprinting strategy (TIS-co-SIT) was employed to construct a high-affinity imprinted membrane. The resulting BC@UiO-66@MIPs exhibited fast adsorption equilibrium within 50 min, a large binding capacity of 502.5 ± 27 (n = 3) mg g⁻¹, and a high imprinting factor (IF) of 6.27 ± 0.84 (n = 3). Furthermore, BC@UiO-66@MIPs also demonstrated excellent reusability, retaining over 90% of its initial binding capacity after ten adsorption-desorption cycles. Notably, the materials exhibited outstanding selectivity, with a competitive adsorption factor (α) of 5.57 ± 0.62 (n = 3) in binary BSA/BHb mixtures, and a high permeation selectivity coefficient (β) of 6.37. The membrane successfully isolated BSA from complex calf serum, confirming its practical potential for protein purification. This study constructs an efficient molecular imprinting system by integrating rational monomer design with advanced porous supports to enhance protein recognition and purification.

为了解决传统蛋白质分子印迹聚合物（P-MIPs）的低结合位点密度和传质局限性，本研究提出了一种协同策略，将定制合成的咪唑离子液体单体1-乙烯基-3-二乙酰氨基咪唑氯（[VDAIM]Cl）与bacterial-cellulose@UiO-66 （BC@UiO-66）杂化支架相结合。光谱表征和分子对接模拟表明，[VDAIM]Cl与牛血清白蛋白（BSA）之间存在多种强相互作用，与传统单体相比，预聚合物复合物的稳定性得到了提高。同时，利用BC的结构优势，采用模板固定化-表面印迹策略（TIS-co-SIT）构建了高亲和力印迹膜。所得BC@UiO-66@MIPs在50 min内达到快速吸附平衡，结合容量为502.5±27 (n = 3) mg g - 1，印迹因子（IF）为6.27±0.84 （n = 3）。此外，BC@UiO-66@MIPs也表现出了出色的可重复使用性，在10次吸附-解吸循环后保留了90%以上的初始结合能力。该材料在BSA/BHb二元混合物中的竞争吸附系数（α）为5.57±0.62 (n = 3)，渗透选择性系数（β）为6.37。该膜成功地从复杂的小牛血清中分离出牛血清白蛋白，证实了其纯化蛋白质的实际潜力。本研究将合理的单体设计与先进的多孔载体相结合，构建了一个高效的分子印迹系统，以提高蛋白质的识别和纯化。

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引用次数: 0

In situ self-layering bilayer alginate-gelatin hydrogels enabling synergistic adhesion and sensing for pressure distribution recognition 原位自分层双层海藻酸-明胶水凝胶，能够协同粘附和感知压力分布识别

IF 12.5 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2026-01-19 DOI: 10.1016/j.carbpol.2026.124967

Xiaoyong Zhang , Pengsi Zhang , Jiaheng Pu , Feng Liao , Guozheng Pang , Fan Li , Xianglv Hu , Yongping Bai

Hydrogel-based wearable devices often struggle to integrate strong adhesion, long-term stability, and reliable sensing within a single system. Here, we present a one-step water–oil phase separation strategy that enables the in situ self-layering of bilayer hydrogels with robust interfacial coupling. The top poly(acrylamide-acrylic acid)-gelatin-alginate (poly(AM-AA)-gelatin-alginate) network provides mechanical resilience and environmental durability, while the bottom poly(butyl acrylate-2-hydroxyethyl acrylate)-glycerol-polycaprolactone methacrylic anhydride (poly(BA-HEA)-GPCL-MA) adhesive layer ensures strong yet reversible adhesion to diverse surfaces. This integrated architecture achieves a rare balance between adhesion, water retention stability, and sensing reliability, overcoming the long-standing trade-off in hydrogel-based electronics. Deformation-induced modulation of ionic conduction pathways endows the hydrogel with sensitive electromechanical sensing, enabling precise human-motion detection and Morse-code communication via controlled finger movements. As proof-of-concept, a 4 × 4 pressure-mapping array was integrated into robotic grippers, enabling tactile feedback to distinguish soft and rigid objects such as balloons and bottles. This work highlights a versatile design strategy for multifunctional hydrogels, paving new opportunities for smart interfaces, advanced human–machine interaction, and adaptive soft robotic systems.

基于水凝胶的可穿戴设备通常难以在单一系统中集成强附着力、长期稳定性和可靠的传感。在这里，我们提出了一种一步水-油相分离策略，使具有强大界面耦合的双层水凝胶的原位自分层成为可能。顶部的聚（丙烯酰胺-丙烯酸）-明胶-海藻酸盐（聚(AM-AA)-明胶-海藻酸盐）网络提供了机械弹性和环境耐久性，而底部的聚（丙烯酸丁酯-2-羟乙基丙烯酸酯）-甘油-聚己内酯-甲基丙烯酸酐（聚(BA-HEA)-GPCL-MA）粘合层确保了对各种表面的强而可逆的粘合。这种集成架构在附着力、保水稳定性和传感可靠性之间实现了罕见的平衡，克服了基于水凝胶的电子产品长期存在的权衡。离子传导途径的变形诱导调制赋予水凝胶敏感的机电传感，通过控制手指运动实现精确的人体运动检测和莫尔斯码通信。作为概念验证，一个4 × 4压力映射阵列被集成到机器人抓手中，使触觉反馈能够区分柔软和坚硬的物体，如气球和瓶子。这项工作强调了多功能水凝胶的通用设计策略，为智能界面，先进的人机交互和自适应软机器人系统铺平了新的机会。

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引用次数: 0

Cellulose-based separators in aqueous zinc-ion batteries: Mechanistic strategies for dendrite suppression and performance enhancement 水溶性锌离子电池中的纤维素基分离器：抑制枝晶和增强性能的机制策略

IF 12.5 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2026-01-19 DOI: 10.1016/j.carbpol.2026.124963

Yiyang Che , Chao Duan , Kang Yang , Xixi Di , Xiaoshuang Liu , Chuanyin Xiong , Mengxia Shen , Yonghao Ni

As global renewable energy demand increases, the development of advanced energy storage systems is critical. Aqueous zinc-ion batteries (AZIBs) exhibit great potential due to their safety, cost-effectiveness, and environmental sustainability. Nonetheless, the formation and growth of zinc dendrites remain a major hurdle challenge, severely restricting the AZIBs' practical applications. This review explores the critical function of cellulose-based separators in mitigating the formation and growth of zinc dendrites. Four core mechanisms underlying the dendrite-suppressing efficacy by cellulose-based separators have been summarized: 1) ‌Mechanical resistance: the inherent strength and flexibility of cellulose physically impede dendrite penetration; 2) zb flux homogenization: achieved via uniform pore distribution, electric field regulation, and selective ion transport; 3) Directed planar zinc deposition: guided by preferential (002) crystalline orientation of zinc to prevent vertical dendrite growth; 4) Alter in dendrite growth direction: functionalized separators promote “counter-deposition”, altering the growth pathway. Furthermore, this review consolidates recent advances in diverse cellulose-based materials, highlighting their structure-property correlations and electrochemical performance in AZIBs. Finally, existing challenges and propose future directions for the development of high-performance cellulose-based separators are discussed, aiming to pave the way for their widespread commercial adoption.

随着全球可再生能源需求的增加，先进储能系统的发展至关重要。水性锌离子电池（azib）由于其安全性、成本效益和环境可持续性而表现出巨大的潜力。尽管如此，锌枝晶的形成和生长仍然是一个主要的障碍挑战，严重限制了azib的实际应用。本文综述了纤维素基分离器在减轻锌枝晶形成和生长中的关键作用。本文总结了纤维素基隔膜抑制树突的四个核心机制：1)机械阻力：纤维素固有的强度和柔韧性物理上阻碍了树突的渗透；2) zb通量均质化：通过均匀孔隙分布、电场调节和选择性离子输运实现；3)定向平面锌沉积：利用锌的优先（002）晶向引导，防止垂直枝晶生长；4)改变枝晶生长方向：功能化分离器促进“反沉积”，改变生长途径。此外，本文综述了各种纤维素基材料的最新进展，重点介绍了它们在azib中的结构-性能相关性和电化学性能。最后，讨论了高性能纤维素基分离器的发展面临的挑战和未来的发展方向，旨在为其广泛的商业应用铺平道路。

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引用次数: 0

Water-resistant, flexible and transparent cellulose nanofibril film for exceptional oxygen-barrier performance under high humidity 防水，柔性和透明的纤维素纳米纤维薄膜，在高湿度下具有卓越的氧屏障性能

IF 12.5 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2026-01-19 DOI: 10.1016/j.carbpol.2026.124966

Zhaodi Zheng , Ran Wu , Qi Li , Xiaowei Wu , Dan Qiu , Zhanghui Wang , Hongzhi Liu

Water sensitivity and brittleness have limited significantly the practical application of cellulose nanofibril (CNF) films. Herein, butane tetracarboxylic acid (BTCA) was integrated into CNF film to construct advanced material. Structurally, the multiple carboxylic acid groups in BTCA were able to form robust ionic bonding with quaternized CNF to improve the water stability. The optimal film, prepared by cross-linking with 0.1 mol L⁻¹ of BTCA solution at pH 8.0, exhibited dramatically reduced water uptake, two orders of magnitude lower than that of the pristine film. After conditioned at 50% RH and 25 °C, the film showed a roughly doubled strain-at-break with only a negligible decline in tensile strength. Under wet conditions, this film demonstrated an ultrahigh strain-at-break of 26.5%, almost comparable to a stiff hard rubber (20%–50%), while the pristine film became too swollen and fragile to handle. Notably, the film retained its optical transparency, exhibiting optimal transmittance of 87.0% at 600 nm. Moreover, it displayed an exceptionally low oxygen permeability of 1.5 mL μm m⁻² day⁻¹ kPa⁻¹ even at 90% RH, outperforming other recently reported nanocellulose-based films (3–60 mL μm m⁻² day⁻¹ kPa⁻¹). The multifunctional CNF film is a promising alternative to petroleum-based materials for visible packaging, flexible electronics and biomedical materials.

水敏性和脆性极大地限制了纤维素纳米纤维（CNF）薄膜的实际应用。本文将丁烷四羧酸（BTCA）集成到CNF薄膜中，构建先进的材料。在结构上，BTCA中的多个羧基能与季铵化CNF形成坚固的离子键，提高了水稳定性。用0.1 mol L−1的BTCA溶液在pH 8.0下交联制备的最佳膜的吸水率显著降低，比原始膜低两个数量级。在50% RH和25°C条件下，薄膜显示出大约两倍的断裂应变，而拉伸强度的下降可以忽略不计。在潮湿条件下，这种薄膜显示出26.5%的超高断裂应变，几乎与硬橡胶（20%-50%）相当，而原始薄膜变得过于膨胀和脆弱而无法处理。值得注意的是，该薄膜保持了其光学透明度，在600 nm处透光率达到87.0%。此外，即使在90%相对湿度下，它也表现出1.5 mL μm−2 day - 1 kPa−1的极低氧渗透率，优于最近报道的其他纳米纤维素基薄膜（3-60 mL μm−2 day - 1 kPa−1）。多功能CNF薄膜是一种有前途的替代石油基材料，用于可见包装，柔性电子和生物医学材料。

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引用次数: 0

Multifunctional cellulose/liquid metal conductive fibers with integrated mechanical, thermal, and conductive properties for smart wearables 多功能纤维素/液态金属导电纤维，具有集成的机械，热和导电性能，用于智能可穿戴设备

IF 12.5 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2026-01-18 DOI: 10.1016/j.carbpol.2026.124959

Yishuai Huang , Wangcheng Liu , Hang Liu

Cellulose-based conductive fibers are promising eco-friendly alternatives to synthetic fibers in smart textiles. Although cellulose offers good thermal stability and mechanical strength for daily use, its performance falls short for high-performance apparel. Moreover, it is flammable, and the high hygroscopicity affects the conductivity of cellulose conductive fibers. To address these limitations, this study employed liquid metal (LM) as a multifunctional component to fabricate cellulose/LM composite fibers. Different from blending, a novel wet spinning technique was utilized to produce biphasic side-by-side (SBS) fibers, positioning cellulose and LM on opposite sides, enabling both materials to fully realize their functionalities while complementing each other. The cellulose/LM SBS fibers exhibited excellent tensile strength and elongation at break (up to 225.1 MPa and 12.7%, respectively), outperforming neat cellulose and conventional blend fibers. Individual SBS fibers exhibited conductivity suitable for low-power electronics and maintained conductivity and structural integrity under bending, folding, and humid conditions. Notably, SBS fibers exhibited superior thermal resistance, retaining full tensile strength after 10 min at 200 °C, and 33% at 400 °C while preserving structural integrity. These combined properties underscore the strong potential of cellulose/LM SBS fibers as conductive components in smart sensing applications under extreme environments, such as firefighter gear.

纤维素基导电纤维是智能纺织品中有希望取代合成纤维的环保替代品。虽然纤维素为日常使用提供了良好的热稳定性和机械强度，但它的性能低于高性能服装。而且它是易燃的，高吸湿性影响纤维素导电纤维的导电性。为了解决这些局限性，本研究采用液态金属（LM）作为多功能组分制备纤维素/液态金属复合纤维。与共混不同的是，采用一种新型的湿纺丝技术生产了双相并排（SBS）纤维，将纤维素和LM放置在相反的一侧，使两种材料充分发挥其功能，同时相互补充。纤维素/LM SBS纤维具有优异的拉伸强度和断裂伸长率（分别达到225.1 MPa和12.7%），优于纯纤维素纤维和常规共混纤维。个别SBS纤维表现出适合低功耗电子器件的导电性，并在弯曲，折叠和潮湿条件下保持导电性和结构完整性。值得注意的是，SBS纤维表现出优异的耐热性，在200°C下10分钟保持完全的拉伸强度，在400°C下保持33%的拉伸强度，同时保持结构完整性。这些综合性能强调了纤维素/LM SBS纤维作为极端环境下智能传感应用的导电元件的强大潜力，例如消防员装备。

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