CARBOHYDRATE POLYMERS
·
2025
·
IF 12.5
Ji-Dong Liu,Chen Du,Yin-Jian Song,Xiang-Yun Du
Cellulose nanocrystals (CNCs) exhibit iridescent structural colors benefitting from the cholesteric helical structure generated by evaporation-induced self-assembly (EISA), showing broad applications in fields such as sensors, anti-counterfeiting and actuators. However, CNC membranes suffer from brittleness due to excessive hydrogen bonding. Current strategies struggle to achieve a harmonious integration of mechanical properties and structural color of CNC membranes. Inspired by the color-regulating mechanism of chameleon skin, this study presents a novel bilayer Janus CNC-hydrogel membrane integrating high flexibility, extraordinary toughness, structural color, sensing capability, actuating performance and thermal management behavior via solution-casting. Benefitting from the strong interfacial interactions (hydrogen bonding and electrostatic forces) between the layers, the membrane shows exceptional flexibility (227 % elongation at break) and toughness (6.88 MJ m −3 ), which exceed the flexibility of most CNC composites in reported literatures. The membranes demonstrate potential applications in strain sensing, artificial muscles and thermal management. This work advances CNC composite design by balancing mechanical performance with structural color integrity, paving the way for multifunctional integration and commercialization.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2025
·
IF 12.5
Jie Ren,Xia Yang,Xu Xiang
Conductive hydrogels hold significant promise for wearable electronics, yet achieving a balance between excellent stretchability and high electrical conductivity remains challenging. To address this, we developed a sandwich-structured hydrogel using carboxymethyl cellulose (CMC)-reinforced polyacrylamide (PAM) as the matrix hydrogel, with surface-deposited carbon nanotubes (CNTs). CMC plays a dual role in the composite hydrogels. Its functional groups form hydrogen bonds with PAM, significantly enhancing mechanical properties (106.38 kPa stress, 637.25 % strain). Additionally, pre-crosslinking with hydroxylated CNTs ensures uniform dispersion while strengthening interfacial adhesion to the hydrogel surface. Subsequent dehydration densifies the CNT layer, improving both tensile properties and electrical conductivity. The hydrogel exhibits 806.94 % strain at a 150 % water-solid ratio and a 31.9 S/m electrical conductivity at a 100 % water-solid ratio. The resulting CPam-CNT hydrogel demonstrates exceptional performance as a high-sensitivity strain sensor ( GF = 19.662 under 0–60 % strain), with rapid response/recovery times (20/40 ms) and outstanding stability for real-time human motion monitoring. Concurrently, the conductive CNT layer enables efficient Joule heating, achieving rapid temperature elevation (100 °C from room temperature within 2 min) with stable thermal cycling. This work introduces an integrated strategy for multifunctional hydrogels combining sensitive strain sensing and controllable Joule heating, advancing their potential in wearable applications.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Lu Liu,Gaoquan Hu,Lin Chen,Feng F. Hong
Pure bacterial cellulose dressings exhibit limited therapeutic outcomes in skin wound management due to inadequate fluid absorption capacity, poor antimicrobial efficacy, and lack of bioactive components. To address these challenges, this study developed an innovative microporous multifunctional composite foam dressing (pOBC/CP/HA) via a novel in situ gas formation strategy applied to oxidized bacterial cellulose (OBC). This methodology generated microporous OBC (pOBC) by inducing bubble formation through a chemical reaction. TEMPO-mediated carboxylation and structurally regulated pOBC matrix facilitated the homogeneous incorporation of cationic chitosan particles (CP) and anionic hyaluronic acid (HA), yielding a composite material with synergistically enhanced performance. Comprehensive characterization studies revealed that the pOBC microporous structures played a pivotal role in determining the functionality of pOBC/CP/HA. Compared with OBC-based foams, pOBC/CP/HA showed significantly enhanced mechanical strength, fluid absorption, antimicrobial activity, and biofunctionality. The microporous composite dressing effectively promoted hemostasis, inflammation modulation, angiogenesis, and wound closure in a rat model. In vivo results demonstrated that treated wounds achieved an 82.9 % closure ratio by day 7 and attained complete re-epithelialization within 14 days. This study demonstrates the capability to enhance composite performance by manipulating the microstructure of OBCs and systematically elucidates the role of structural parameter differences in regulating biological responses.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Lili Qin,Weihao Xiang,Shiwei Liu,Lu Li,Yue Liu,Yuxiang Liu,Genkuo Nie,Hailong Yu,Jingxin Li
Biomass-derived carboxymethyl cellulose lithium (CMC Li) was synthesized from poplar wood (PW) and corn stover (CS) as sustainable binders for lithium-ion batteries. The raw materials were pretreated with green deep eutectic solvents (DESs) to remove lignin and hemicellulose, followed by bleaching to purify the cellulose. The purified cellulose was subsequently subjected to alkaline swelling, alkalization, and etherification to produce CMC-Li binders. Results revealed that CMC-Li binders derived from neutral choline chloride (ChCl)/ethylene glycol (EG) (1:4) pretreatment (CMC-Li-PW(EG) and CMC-Li-CS(EG)) exhibited higher molecular weight and a more uniform molecular weight distribution, leading to improved force distribution between the binder and conductive agents. The cathodes of LiFePO 4 (LFP) batteries fabricated with these binders displayed smoother surfaces, uniform particle distribution, and minimal agglomeration or voids, resulting in enhanced Young's modulus and adhesion strength compared to traditional polyvinylidene fluoride (PVDF) binders. Moreover, LFP batteries utilizing CMC-Li binders demonstrated low charge impedance, superior cyclic voltammetry performance, high initial charge-discharge capacities (175/174 mAh/g for CMC-Li-PW(EG) and 173/172 mAh/g for CMC-Li-CS(EG)), high initial Coulombic efficiency (>98 %), low capacity loss (4.2 % after 200 cycles), and excellent rate capability. These findings highlight the potential of biomass-derived CMC-Li binders as high-performance, eco-friendly alternatives for next-generation LIBs.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Na Li,Jie Zhu,Dongni Liu,Liu Liu,Chenggong Zhang,Dequn Wu
The flammability and bacterial susceptibility of cellulose have always posed significant safety hazards in its application. A multifunctional agent (SiCA) combining flame retardancy and antibacterial activity was developed using nano-hybridization in this study. The SiCA was centered around nano-SiO 2 , which was modified with a quaternary ammonium salt and a Schiff base. Through chemical grafting, SiCA was successfully immobilized on the cotton fabric surface. Flammability tests revealed that the limiting oxygen index (LOI) value of treated cotton fabric rose significantly from 18 % to 27.5 %. The modified fabric showed a 35.5 % reduction in peak heat release rate (pHRR) and achieved self-extinguishing behavior in UL-94 vertical flame tests. The antibacterial efficacy of modified fabric against Staphylococcus aureus ( S. aureus ) and Escherichia coli ( E. coli ) was also validated, with inhibition rates reaching 99.6 %. Furthermore, the biocompatibility of modified fabrics was evaluated using MTS assays and animal wound model. L929 fibroblast cell tests confirmed low toxicity of SiCA. The wound healing rate of 97.3 % was achieved after 14 days in animal model, indicating the function of promoting healing. The excellent flame retardancy, antibacterial, and biocompatibility of modified cotton fabric suggested it was an ideal candidate in military combat training uniforms, infant and toddler clothing, automotive interiors, public transportation, and medical settings.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Today Communications
·
2025
·
IF 4.5
He Zhang,Hua Liu,Jianing Xu,Chao Zhou
This study utilized ionic liquids (ILs) to exfoliate Laponite nanosheets(XLP), altering the interlayer spacing of XLP, thus significantly improving its dispersibility and stability. More importantly, ILs can also benefit the dispersibility of graphene (GN) as well. The synergistic effects of sodium carboxymethyl cellulose (CMC), acrylamide, acrylic acid, SMA, and XLP significantly enhanced the mechanical properties of the hydrogel. At the same time, evenly dispersed GN enhanced the conductivity and sensing ability of the hydrogel dramatically. The hydrogel's multi-network structure, including physical cross-linking, chemical cross-linking, hydrophobic associations, and hydrogen bonding interactions, exhibited excellent mechanical performance and flexibility. The hydrogel sensors demonstrated excellent strain sensing capabilities, effectively responding under various strain conditions with high sensitivity and stability over a wide range of strains. Notably, the hydrogel sensors showed good responsiveness and repeatability in detecting human joint movements (wrist, elbow, knee), allowing for the differentiation of different joint motions. In summary, the P(AM-co-AA)/SMA/CMC/XLP/GN hydrogel, with its excellent dispersibility, mechanical properties, and sensing capabilities, exhibits great potential for applications in flexible sensors and wearable devices. This multi-mechanism enhancement strategy provides an effective method and theoretical foundation for designing high-performance hydrogel materials. Future research can further optimize the material's properties and expand its applications in other fields.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Yang Li,Xiyao Wang,Keke Chen,Yuhao Feng,Panpan Liu,Yu Jiang,Zhenghui Shen,Xiao Chen
Phase change materials (PCMs)-integrated solar-thermal-electric generators (STEGs) have emerged as a promising platform for sustainable solar energy harvesting, yet faces critical challenges including liquid phase instability, insufficient photothermal efficiency, and limited thermoelectric output. Herein, we engineered hierarchical photonic confinement through the assembly of plasmonic CuS nanoparticles, broadband-absorbing MoS 2 nanosheets, and porous bacterial cellulose (BC). In this tripartite architecture, BC matrix provides robust structural integrity and enhances heat transfer via its 3D interconnected nanoporous structure; MoS 2 nanosheets enable extended photon harvesting across the ultraviolet to near-infrared spectrum; CuS nanoparticles amplify near-field optical effects through localized surface plasmon resonance. The optimized composite PCMs achieve a remarkable photothermal conversion efficiency of 93.6 % under 100 mW/cm 2 , along with excellent latent heat retention close to 100 % after 10-day thermal cycles, attributed to the plasmon-phonon coupling between MoS 2 nanosheets and CuS nanoparticles. When integrated with thermoelectric devices, this STEG delivers a high and durable thermoelectric output of 157.0 mV and 44.0 mA under 100 m W/cm 2 irradiation, enabled by the photothermal-thermoelectric coupling effects. This innovative hierarchical photonic confinement design provides a universal platform for next-generation thermal management systems and self-powered photothermal technologies.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Dezhi Zhao,Hexiang Wang,Zheng Wang,Shuang Lu
Amidoxime groups were successfully introduced to develop a novel amidoxime-functionalized cellulose fiber (AO-Cell) for absorptive removal of heavy metal ions in wastewater. The chemical structure , and the competitive adsorption of Cu 2+ and Zn 2+ by AO-Cell were investigated by experiments study, Density functional theory (DFT) and molecular dynamic (MD) simulation. The results showed the N and O atoms in the amidoxime group can spontaneously interact with Cu 2+ and Zn 2+ through sharing long pair electrons to generate stable coordination structure, which was the dominant adsorption mechanism. Besides, the enlarged surface area, improved hydrophilicity and dispersion offered by AO-Cell facilitate the adsorption process by increasing the accessibility of absorption sites. As results of these synergetic modification, AO-Cell can remain effective in a wide pH range (1–6) and reach adsorption equilibrium within 60 min. At optimal conditions, the achieved theoretical adsorption capacity is as high as 84.81 mg/g for Cu 2+ and 61.46 mg/g for Zn 2+ in the solution with multiple ions. The competition between Cu 2+ and Zn 2+ in occupying the absorption sites arises from the difference in the metallic ion affinity and covalent index with the adsorbent as demonstrated by the MD analysis. Importantly, AO-Cell demonstrated favorable recyclability after up to 10 adsorption-desorption cycles.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Zhiping Su,Huanhuan Zhang,Ningdan Li,Jiamei Li,Yuqin Fu,Haiyan Xu,Shaobo Zhang,Liping Ning,Xiaohui Wang,Shanshan Jia
Plastic pollution has been one of the biggest challenges to the ecological environment. Polyimine vitrimer (PI) synthesized by dynamic imine chemistry is degradable and closed-loop recyclable, making it a promising candidate to replace conventional nondegradable plastics. However, most PIs exhibit poor mechanical properties, which seriously weaken their application potential. Herein, a high strength PI/CNFs composite film (PI/CNFs film) was successfully developed by reinforcing PI using cellulose nanofibrils (CNFs). The resulting PI/CNFs film exhibited excellent mechanical properties with the tensile strength, toughness, and Young's modulus of 71 MPa, 33.7 MJ m −3 , and 1.4 GPa, respectively. The PI/CNFs film also showed good waterproof capability, as well as excellent shape stability in water, ethanol, and alkali solution. The dynamic exchange character of PI endowed the PI/CNFs film with excellent re-healing, remolding, and reshaping capabilities. The PI/CNFs film could be chemically degraded and recycled because of the reversibility of imine bonds. Moreover, the PI/CNFs film could completely biodegrade in natural soil within two months. Therefore, this PI/CNFs film represents a novel and environmentally friendly plastic substitute.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Haiyun Ou,Xu Xiang
This study fabricated a composite aerogel (BcIGA) with both efficient adsorption and thermal insulation properties by combining bacterial cellulose (BC) with industrial-grade graphene oxide (IGO). By incorporating BC to reinforce the aerogel skeleton via hydrogen bonding and physical entanglement, the composite's compressive strength was significantly enhanced, with BcIGA-4 reaching 105.3 kPa. This addresses structural defects in IGO that compromise mechanical performance. The nanofiber structure of BC optimized the pore distribution, increasing the specific surface area of the composite aerogel from 1.85 m 2 /g (IGA) to 4.11 m 2 /g (BcIGA-2). BcIGAs' abundant defects and residual oxygen groups enabled rapid, high-capacity adsorption: achieving 286.1 ± 14.1 mg/g for methylene blue (MB) and 232.7 ± 19.1 mg/g for tetracycline (TC), with > 88 % retention after six cycles. Moreover, the introduction of BC lengthened the heat transfer path, while the IGO layers also acted as a barrier to infrared radiation, resulting in a synergistic decrease in the thermal conductivity of BcIGAs. Specifically, BcIGA-2 had a thermal conductivity of 0.036 ± 0.002 W/(m·K), while BcIGA-4 decreased to 0.031 ± 0.001 W/(m·K). Composite with BC not only makes up for the quality deficiencies of IGO but also substantially improves its overall performance, achieving a synergistic optimization of the "adsorption-insulation-mechanical" properties. This research opens up a new path for the application of low-cost industrial graphene products and is expected to drive the advancement of relevant studies.
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART B-ENGINEERING
·
2025
·
IF 14.2
Ming Li,Xialian Xiao,Shuang Liu,Yibao Li,Bin Wang,Yali Li
The development of efficient flame-retardant cellulose-based materials has garnered significant research interest. Inspired by reinforced concrete, a robust and efficient flame-retardant modified cellulose-based composite for fire prevention was developed. The material consists of oriented cellulose fibers in bamboo as the ‘reinforcing steel’ and impregnated ammonium polyphosphate (APP) and polyethyleneimine (PEI) containing epichlorohydrin (ECH) as the ‘concrete’, which are tightly bonded together by multiple interactions under hot-pressing. Compared to the baseline PBA material, the PBA-P 3 N composite exhibited a 112.8 % increase in tensile stress, reaching 247.1 MPa, and a 77.7 % increase in strain, achieving 13.2 %. The limiting oxygen index (LOI) of the composite reached 46.9 %. The peak heat release rate (pHRR) and total heat release (THR) values of the composite were 97.0 kW/m 2 and 8.8 MJ/m 2 respectively, which were reduced by 64.0 % and 45.9 %. The functional composite could still show self-extinguishing properties after being kept in the flame for 40 s. Under flame attack, the flame-retardant composite was capable of protecting underlying flammable materials for up to 15 s. The developed flame-retardant material exhibits excellent fire resistance and holds promise for application in specialized environments to enhance the fire safety of flammable products.
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Communications
·
2025
·
IF 4.5
Yuanyuan Wang,Yingjing Xia,Xingshen Dong,Peng Qiao,Wenyi Wang,Hua Song
A series of mixed biomass-derived porous carbon materials were successfully synthesized using chitosan and hydroxypropyl cellulose (CSHPC) as precursors through K 2 CO 3 activation. Among the synthesized materials, CSHPC-3–700 demonstrated a superior hierarchical pore structure and abundant nitrogen/oxygen functional groups, exhibiting exceptional electrochemical performance: a high specific capacitance of 371.8 F·g −1 at 1 A·g −1 and an outstanding rate capability (235.2 F·g −1 at 100 A·g −1 ). In symmetric supercapacitors, CSHPC-3–700 achieved a high energy density of 10.17 Wh·kg −1 with 91.3 % capacitance retention after 20,000 cycles, significantly outperforming porous carbons derived from individual chitosan (CS-3–700) or hydroxypropyl cellulose (HPC-3–700) precursors. This study provides a viable strategy for developing high-performance supercapacitor electrodes through rational hybridization of biomass precursors.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）