CERAMICS INTERNATIONAL
·
2026
·
IF 6
Jiaojiao Li,Hongtao Wang,Yuxuan Li,Jinjin Li,Juntao Wang,Yi Liu,Ping Song,Penggang Ren
Thermally conductive fillers with heterogeneous structures can integrate the advantages of their constituent components to form continuous thermally conductive pathways within composites, thereby significantly improving their thermal conduction efficiency. In this study, “point-line” heterostructured silver nanowire@boron nitride nanosheet (AgNWs@BNNS) thermally conductive fillers were synthesized via surface functionalization. Subsequently, AgNWs@BNNS were incorporated into the matrix of cellulose nanofibers (CNF), and nacre-mimetic AgNWs@BNNS/CNF thermally conductive composites were prepared using vacuum-assisted filtration followed by hot-pressing. At an optimal mass ratio of AgNWs to BNNS of 1:1 and an AgNWs@BNNS mass fraction of 80 wt%, the in-plane thermal conductivity ( λ ∥ ) of the AgNWs@BNNS/CNF composite reached 5.55 W/(m·K), representing an increase of 386.84% relative to pure CNF. Furthermore, the composite exhibited multifunctional properties, including excellent temperature-voltage response (Joule-heating temperature of 134.5 °C at 2 V with a rapid response time of 10 s), superior thermal stability (temperature at maximum weight loss rate (T dmax ) of 311.63 °C), and robust mechanical performance (tensile strength of 20.80 MPa and tensile modulus of 1.17 GPa). The thermally conductive composites developed in this work provide a viable strategy for the design of efficient thermal management materials, shedding light on potential applications in thermal management for 5G electronic devices and next generation data computing network.
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CARBOHYDRATE POLYMERS
·
2026
·
IF 13.2
Ruishuo Shen,Hong Wang,Chenhuan Lai,Shishuai Gao,Yupeng Liu,Daihui Zhang,Ben Bin Xu,Yuzhi Xu,Fuxiang Chu
Bamboo cellulose exhibits excellent biocompatibility and renewability, making it a promising alternative to conventional non-renewable petroleum-based resources. However, the inherent trade-off between strength and toughness, together with the flammability of cellulose, poses significant challenges for the development of bamboo cellulose-based films that simultaneously exhibit high strength, high toughness, and flame retardancy. In this study, a multiscale strategy involving deep eutectic solvent treatment is employed to deconstruct, modify, and reconstruct the bamboo cellulose network, thereby transforming it into a high-performance bioplastic. First, phosphorylated cellulose fibers with different size scales were prepared using a reactive ternary deep eutectic solvent. Subsequently, a film was successfully constructed via a micro/nano scale design strategy involving the physical entanglement of cellulose microfibrils and the physical filling of cellulose nanocrystals. The resulting film exhibits high strength (82.32 MPa), high toughness (20.05 MJ m −3 ), excellent flame retardancy (LOI = 62.17%), as well as outstanding thermal stability, biodegradability, and recyclability, outperforming most reported cellulose-based flame-retardant films. This study demonstrates the significant promise of bamboo biomass as a sustainable substitute for petroleum-derived materials, thereby advancing the transition toward high-value applications of bamboo cellulose.
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ACS Applied Nano Materials
·
2026
·
IF 5.8
Mengxia Shen,Xiangming Zhang,Liguo Yang,Chanjuan Liang,Jiayin Li,Jianfeng Huang,Yan Li,Zhengliang Zhang,Xunfei Zheng
Lithium iron phosphate (LiFePO4) is recognized as one of the potential cathode materials for lithium-ion batteries owing to its environmental sustainability, affordable cost, and excellent thermal stability. Nevertheless, the sluggish diffusion of lithium ions and the relatively limited electronic conductivity emerge as critical factors that impede the advancement of LiFePO4 cathode materials. In this study, we present a simple, effective, and environmentally friendly method for incorporating cellulose nanofibers (CNF) as an additional carbon source into metal–organic coordinated structure-derived carbonized LiFePO4 cathode material (LFP@C). The hierarchical porous electrode material (LFP@C/CNF), consisting of a three-dimensional carbon nanofiber conductive network integrated with nitrogen-doped carbon-coated LiFePO4 nanoparticles, is successfully prepared via freeze-drying followed by pyrolysis. CNF forms a stable interaction with LFP@C particles through electrostatic self-assembly, thereby constructing a “core (LFP)-shell (C)-network (CNF)” multi-level hierarchical structure. The unique structure significantly shortens the transport distance for lithium ions and electrons, thereby enhancing their mobility. Additionally, the porous nature of this structure provides ample space for electrolyte storage. Owing to these distinctive structural features, LFP@C/CNF composites demonstrate exceptional specific capacity (158.5 mAh g–1 at 0.1 C), impressive rate performance (116.5 mAh g–1 at 5 C), and remarkable cycling stability (87.08% capacity retention after 200 cycles at 1 C). These outstanding characteristics position LFP@C/CNF composites as highly promising candidates for use in next-generation lithium-ion batteries.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.7
Xinwei Yuan,Wenao Liao,Yan Li,Wei Li,Lin Xiao,Ninghao Song,Jianghong Luo,Huaqiong Feng
A thermoresponsive PNIPAM/HPC-CNT hydrogel enables dynamic EMI shielding. • Water-content evolution governs the electromagnetic response of hydrogels. • A tunable EMI shielding range of ~21.4 dB is achieved in the X-band. • Reversible EMI shielding ON/OFF switching occurs within a mild temperature window. • The hydrogel integrates EMI shielding with temperature and strain sensing. Thermoresponsive polysaccharide hydrogels have attracted considerable attention for wearable electronics owing to their high water content, flexibility, and stimuli-responsive characteristics. However, the role of hydration-state evolution in regulating electromagnetic behavior remains insufficiently understood. Herein, a hydroxypropyl cellulose (HPC)-based thermoresponsive conductive hydrogel was developed by integrating a poly(N-isopropylacrylamide) (PNIPAM)/HPC double network with a carbon nanotube (CNT)-based conductive framework. The reversible phase transition of the PNIPAM/HPC network induced temperature-dependent dehydration and structural reconstruction, thereby dynamically modulating the conductive pathways, dielectric loss, and impedance matching. Consequently, the representative hydrogel exhibited a shielding effectiveness of approximately 29.8 dB at 25 °C, which decreased to 8.4 dB at 60 °C, corresponding to a tunable range of 21.4 dB. Furthermore, the incorporation of NaCl effectively lowered the phase-transition temperature, enabling reversible temperature-dependent modulation of electromagnetic shielding within a mild temperature window of 15–40 °C. More importantly, the combined changes in hydration state, dielectric dissipation, and effective attenuation ultimately led to a pronounced decrease in shielding effectiveness. In addition to dynamic electromagnetic regulation, the hydrogel demonstrated reversible temperature- and strain-responsive sensing for monitoring skin temperature and human motion. This work highlights hydration-state engineering as an effective strategy for regulating electromagnetic properties in polysaccharide-based hydrogels and provides new opportunities for multifunctional wearable bioelectronics.
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CELLULOSE
·
2026
·
IF 4.6
Wang Peng-Fei,Xu Ling-Hua,Li Le,Cao Xue-Fei,Sun Shao-Ni
Cellulose nanocrystals (CNCs) are promising nanomaterials with unique optical properties for advanced anti-counterfeiting applications. However, the wide particle size distributions of CNCs and the strict self-assembly conditions of the chiral photonic films (CPFs) severely hampered their practical use. Hence, a continuous phase separation strategy was developed to achieve stepwise fractionation of CNCs and further facilitate the preparation of the CPFs. Spectroscopic and microscopic analyses revealed that the CNC particles were graded into various CNC fractionations with different properties after the continuous phase separation. The CNCs in the anisotropic phase had relatively high length, diameter, aspect ratio, surface charge, and crystallinity than these in the isotropic phase. CPFs with uniform chiral nematic liquid crystal structure and vibrant structural colors could be easily prepared from the anisotropic CNCs without the time-consuming evaporation-induced self-assembly (EISA) process. Subsequently, these CPFs were crushed into chiral photonic micro-flakes and embedded into polymer matrices to fabricate films and coatings. The resulting composites demonstrated anti-counterfeiting capabilities and easily distinguishable features under circularly polarized light. This environmentally friendly and scalable phase separation strategy significantly improves the preparation efficiency and reproducibility of CNC-based CPFs, providing a promising pathway for their application in anti-counterfeiting materials.
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Gels
·
2025
·Vol. 11
·期 6
·458
·
IF 5.3
Yubo Tao,Jinbao Du,Tong Hu,Peng Li,Ling Pan,Fangong Kong,Jingfa Zhang
The development of printable, biocompatible, biodegradable, and cost-effective bioinks, or biomaterial inks, remains a focal point in extrusion-based bioprinting research. In this study, fish gelatin (FG) was reinforced with microcrystalline cellulose (MCC) to formulate biomaterial inks. These FG/MCC composite inks were fabricated into 3D scaffolds using an extrusion bioprinter. The influence of MCC concentration on printability was systematically evaluated. Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) analyses confirmed the formation of hydrogen bonds between MCC and FG, indicating molecular-level interactions. Notably, MCC incorporation enhanced the rheological properties of the ink and significantly improved the compressive strength of printed scaffolds. Furthermore, MCC content modulated key scaffold characteristics, including porosity, degradation rate, swelling behavior, and microarchitecture. These findings demonstrate that FG/MCC composite hydrogels exhibit optimal properties for extrusion-based 3D bioprinting, offering a promising platform for tissue engineering applications.
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ACS Applied Polymer Materials
·
2025
·
IF 4.7
Shaoning Wang,Chi Zhang,Jun Ma,Lili Zhang,Zhiguo Wang
Hydrogel sensors have experienced rapid advancements due to their sensitivity in detecting motion signals and the versatility of their synthesis strategies. However, to enhance their intrinsic performance or to provide additional functionalities necessary for complex application requirements, hydrogel sensors typically require the incorporation of various nanofillers. As demand grows for sensors that are skin-friendly, wearable, and mechanically stable, cellulose nanofibers (CNF) as a natural polymer have emerged as indispensable nanofillers. Nevertheless, despite being a widely utilized natural biomass nanofiller, CNF exhibit poor conductivity, and the second cross-linked network they form often results in the improved performance of hydrogel sensors at the cost of their electrical properties. In this study, surface-active carboxyl functional groups of CNF, which were prepared through nanofibrillation and modification with deep eutectic solvent (DES), were utilized to load the organic conductor PEDOT/PSS via electrostatic attraction. This resulted in the formation of functionalized nanofillers designated as PEDOT/PSS@OA-CNF. Subsequently, PAA/PEDOT/PSS@OA-CNF hydrogel sensors were synthesized through rapid in situ polymerization using an aqueous solution of acrylic acid (AA), photoinitiator, and polymerization under UV-light. The incorporation of PEDOT/PSS enables OA-CNF to function as a nanofiller, simultaneously enhancing both its mechanical properties (stress–strain: from 2.91 MPa and 321.23% to 4.69 MPa and 512.73%) and electrical conductivity (0.12 to 0.58 S/m), and the dual-functionalization cellulose nanofillers with improved mechanical and electrical properties of hydrogel sensors were achieved. Notably, the PAA/PEDOT/PSS@OA-CNF hydrogel sensor exhibits a high sensitivity to motion detection and long-term stability. Moreover, its compatibility with 3D printing allows for the fabrication of complex shapes, making it adaptable to various practical applications. It can precisely monitor both subtle (drinking and coughing) and large-scale (joint movement) human motions, demonstrating potential applications in human motion monitoring, flexible sensors, and stretchable electronic devices.
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CARBOHYDRATE POLYMERS
·
2025
·
IF 12.5
Jiasheng Wei,Peiyu Zhao,Di Li,Pan Xie,Shufan Wang,Chunxia Tang,Guiqiang Fei,Lei Dai
In response to the escalating threat of electromagnetic pollution, there has been a growing focus on the development of electromagnetic interference (EMI) shielding materials. Particularly, renewable components and proper structure are favored to design EMI shielding materials. Herein, polysaccharides (i.e., TEMPO oxidized cellulose nanofiber and cationic starch) and cellulose paper were applied to fabricate a composite with the sandwich structure of “conductor-magnet-conductor” by integrating with Ti 3 C 2 T x and Fe 3 O 4 . This cellulose-based composite exhibited good flexibility and tensile strength. The sandwich structure enhanced the electromagnetic wave loss, owing to interfacial reflection, dielectric loss, and magnetic loss. The composite achieved an EMI shielding effectiveness (SE) of 62.9 dB. It also possessed a satisfactory infrared stealth performance due to the low infrared emissivity of Ti 3 C 2 T x , which could effectively block infrared radiation from the heated object. Furthermore, the composite exhibited good Joule heating performance (reaching 104.8 °C within 25 s at 5 V). This work might provide a new pathway for the design of multifunctional cellulose-based materials.
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JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2025
·
IF 14.3
Di Li,Qing Luo,Jiasheng Wei,Jing Zhang,Ping He,Zhu Long,Guiqiang Fei,Lei Dai
Modern infrared detection technology and electromagnetic interference (EMI) problems spur the development of multispectral compatible defense materials. However, high-performance materials prepared with facile preparation technology are in urgent demand. Herein, we proposed a cellulose-based asymmetric hierarchical composite for dual-spectra compatible defense (i.e., EMI shielding and infrared stealth). This hierarchical composite was assembled with a TEMPO oxidized cellulose nanofiber (TOCNF)/carbon nanotube (CNT) aerogel prepared by ambient pressure drying and a TOCNF/MXene film. The assembled composite realized a maximum EMI shielding effectiveness (EMI SE) of 77.3 dB, and the absorption coefficient could reach 0.71 at most, benefiting from an “absorption-reflection-reabsorption” shielding mechanism. This composite acted as an absorption-dominated EMI shielding material that effectively mitigated the secondary reflection of electromagnetic waves. Interestingly, the asymmetric structure allowed this composite to switch to a reflection-dominated EMI shielding material when flipped easily. Furthermore, the composite exhibited outstanding infrared stealth performance, attributed to the impeded heat transfer within the aerogel layer and the inherently low infrared emissivity of the film layer. This asymmetric hierarchical structural design, based on ambient pressure drying, offers a facile strategy for developing dual-spectra compatible defense materials with switchable electromagnetic wave absorption capability.
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ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Qiao Ji,Zihao Zhang,Yujin Han,Yan Zhang,Aihui Zhou,Jin Xu,Bomou Ma,Jiugang Yuan
Bacterial cellulose (BC) is a sustainable biopolymer whose composite fabrication is challenged by structural disruption during processing and potential cytotoxicity from cross-linkers. In this study, we developed a BC/collagen/tannin composite using a simple deposition method. The entire preparation process of this composite was free of toxic chemicals and was accomplished through a simple impregnation technique that preserved the structural integrity of the BC network. First, BC was pretreated in NaOH/urea solution to increase the proportion of amorphous regions within the membrane, which promoted the adsorption of collagen. Second, inspired by interactions between tannin and proteins during the leather tanning process, tannin was used to immobilize adsorbed collagen within the pores of BC to form a dense and stable cross-linked network. The BC composite exhibited a maximum tensile strength of 53.42 MPa and an elongation at break of 21.30%. The BC composite also showed an air permeability of 2.76 kg/(h·m2) and biocompatibility, with cell viability exceeding 85%. This composite can potentially be used to develop skin repair dressings and biobased leather materials. This paper presents an efficient and environmentally friendly strategy for preparing BC/collagen biocomposites.
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CARBOHYDRATE POLYMERS
·
2026
·
IF 13.2
Yiying Wei,Bo Cong,Xiaopu Ji,Dangyang Wang,Jinghui Hu,Zonglei Mou,Haiqing Song,Yue Zhi,Yushu Liu,Guofeng Zhang,Wan Ru Sun,Pingyu Wang,Deqiang Wang,Shuyang Xie,Ranran Wang
Flexible wearable sensors have garnered significant attention in recent years and exhibit promising application potential in the field of healthcare. Conductive hydrogels have emerged as ideal materials for the development of flexible wearable sensors due to their tunable structural properties, mechanical flexibility, and ease of processing. Nevertheless, most hydrogels are primarily engineered for detecting physiological signals, such as movement and electromyography (EMG), yet lack therapeutic functionalities. In addition, Previous reported hydrogels fabricated from synthetic polymers may retain residual small-molecule monomers, posing cytotoxicity risks. Herein, we report a multifunctional conductive hydrogel composed of carboxymethyl cellulose (CMC), polydopamine (PDA), and polypyrrole-polydopamine-MnO x nanoparticles (P-NPs), designed for concurrent motion monitoring, electromyography (EMG) signal detection, and photothermal therapy. The hydrogel was synthesized through a one-step amidation/oxidative polymerization approach, yielding an interpenetrating dual-network architecture with enhanced mechanical strength and tissue adhesion relative to single-network systems. The incorporation of P-NPs imparts high electrical conductivity, enabling real-time monitoring of physiological signals (e.g., joint movement, muscle activity), as well as effective photothermal conversion under near-infrared (NIR) irradiation. Notably, the hydrogel facilitates on-demand photothermal therapy to mitigate muscle fatigue upon detection of abnormal EMG signals, offering a strategy to prevent exercise-induced injury. Owing to its excellent biocompatibility and stability, the CMC/PDA/P-NPs hydrogel represents a promising platform for next-generation wearable devices integrating diagnostic and therapeutic functions.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·121733
·
IF 7.5
Qing Yang,Yanmei Deng,Shuangjiang Li,Xiliang Li,Tingyan Ye,Yi Liu,Yunfei Zhi,Shaoyun Shan
The conversion of CO 2 into cyclic carbonates is crucial for achieving carbon neutrality and enabling resource recycling. Developing efficient heterogeneous catalysts from renewable biomass is a key direction in green catalysis. This study designed a green and efficient heterogeneous catalyst (MCA-PIL) by acetylating bamboo-derived cellulose to construct a porous cellulose acetate support, followed by immobilization of 1-methyl-3-allylimidazolium bromide. The catalyst was systematically characterized using FTIR, XPS, solid-state 13 C NMR etc., which confirmed its chemical structure, hierarchical porosity, and thermal stability. Under optimized conditions (120 ℃, 1.5 MPa CO 2 , 8 h), MCA‑PIL achieved a 99 % yield of chloropropene carbonate from CO 2 and epichlorohydrin without solvent or co-catalyst. The catalyst exhibited broad substrate scope across various epoxides and maintained high activity over five consecutive cycles. Kinetic studies indicated first-order reaction kinetics with an apparent activation energy of 48.35 kJ·mol −1 . Experimental and density functional theory (DFT) analyses revealed a synergistic three-step mechanism: cooperative activation of the epoxide and CO 2 by surface hydroxyl groups and the imidazolium ring, followed by Br - -induced ring-opening, CO 2 insertion, and cyclization to form the product with concurrent catalyst regeneration. This work provides new design principles for biomass‑based catalysts and demonstrates a synergistic strategy integrating CO 2 valorization with renewable material development.
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危险品化学品经营许可证（带存储）