CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Yu Fang,Xianrong Huang,Xiangyu Zhao,Xinpeng Hu,Gangchen Lu,Qi Shi,Jiaxin Ren,Jinping Qu,Xiang Lu
The relentless miniaturization and integration of modern electronic devices impose stringent demands on efficient thermal management and the suppression of electromagnetic interference. Addressing both challenges with a single material system is vital for the advancement of next-generation electronics. Here, we present a novel class of multifunctional, shape-stabilized phase change composites comprising an interconnected MXene/cellulose nanofiber aerogel framework infused with an ethylene vinyl acetate/paraffin wax medium. A simple, energy-efficient ethanol ice crystal exchange process is employed to fabricate mechanically robust and flexible MXene/ cellulose nanofiber aerogels, circumventing the structural limitations of conventional freeze-drying. The synergistic interaction between MXene and cellulose nanofiber endows the aerogel matrix with exceptional mechanical strength, enabling high-density vacuum impregnation of ethylene vinyl acetate/paraffin wax without compromising electromagnetic interference shielding performance (~51.9 dB, 2 mm). Owing to the high phase-change medium loading supported by the robust architecture, the composites deliver remarkable thermal energy storage capacity, with specific enthalpy values reaching ~170 J g −1 . In addition, the materials exhibit outstanding thermal reliability and flexibility under repeated cycling. This work introduces a promising strategy for integrating efficient thermal regulation and strong electromagnetic interference shielding into a unified platform, paving the way for passive thermal management, waste heat utilization, and electromagnetic compatibility in sophisticated, miniaturized electronic systems.
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INDUSTRIAL CROPS AND PRODUCTS
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2025
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IF 6.2
Zongyao Wang,Bai Yi,Chao Yan,Guoqi Xu
To address the inadequate mechanical strength of conventional waterborne polyurethane (WPU) caused by hydrophilic group incorporation, alongside the agglomeration tendency of cellulose nanofibers (CNF) as reinforcing fillers, this study proposes a multiscale dynamic reinforcement strategy leveraging synergistic “metal coordination and multiple hydrogen bonding.” Fe 3+ chelated tannic acid (TA)-modified CNF (Fe 3+ /TA@CNF) was fabricated as an enhancer and incorporated with WPU via a solvent casting technique to produce modified CNF reinforced WPU elastomer composites (F x T 1 CWPU). Subsequently, composite conductive films (MXene/F x T 1 CWPU) were fabricated through MXene conductive coating. Systematic investigations were conducted on the effects of the molar ratio of Fe 3+ to TA on the microstructure, thermal stability, and mechanical properties of the F x T 1 CWPU films. Furthermore, the sensing properties of the MXene/F x T 1 CWPU films were evaluated. When the molar ratio of Fe 3+ to TA was set at 2:1, the composite film demonstrated exceptional mechanical, ultimate tensile strength (6.12 MPa) and toughness (18.67 MJ·m −3 ) increased by 652 % and 461 % compared to WPU. Subsequent cyclic tensile tests confirmed the excellent resilience and energy - dissipation capacity of the composite films. Notably, the Fe 3+ and TA coordination network gives the material excellent adhesion properties (1.23 MPa shear strength on wood surfaces). Moreover, the MXene/F x T 1 CWPU films reliably monitored human motion, showing their promise as flexible substrates for wearable electronics (The film achieved stable acquisition of electrical signals from continuous limb movements over a 15-second period and accurately identified the timing of each individual movement.). This work provides a new approach for the development of multifunctional polymer nanocomposites.
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CELLULOSE
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2025
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IF 4.8
Li Min,Shi Xuehui,Tao Furong,Ji Hairui,Ji Xingxiang,Tian Zhongjian,Chen Jiachuan
The flammability of most decorative paper poses a potential fire hazard to buildings. In this study, softwood fibers were modified with phytic acid and urea to obtain phytic acid esterified cellulose (PAEC) with good flame-retardant properties. Due to the introduction of phosphorus and nitrogen elements in PAEC, the heat release rate (HRR) and total heat release (THR) decreased from 170.9 W/g and 7.6 kJ/g to 104.3 W/g and 4.9 kJ/g, respectively, when compared with raw fibers. Subsequently, PAEC was composited with talc powder, carboxylated nanofibers, and calcium ions to prepare flame retardant paper. The results indicated that the HRR of the 170.9 W/g of the paper was decreased to 47.0 W/g. The network structure formed by the cross-linking between carboxyl groups in nanofibers and Ca 2⁺ enhanced the paper’s mechanical properties. The strength reached 12.18 MPa, which was 1.4 times as high as that of raw paper. Therefore, the prepared flame-retardant paper is expected to provide a candidate for the preparation of decorative paper. Graphical abstract
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Yu Zhao,Ziguang Wang,Yu Wang,Zien Cheng
Hydrogels are promising materials for flexible wearable electronics; however, they often encounter limitations in practical applications due to environmental instability and weak mechanical properties. This study developed a multifunctional composite hydrogel by integrating phytic acid (PA) and hydrophobic lauryl methacrylate (LMA) chains into a polyacrylamide (PAM) and carboxymethyl cellulose (CMC) network, resulting in a synergistic multi-dynamic cross-linked structure. The hydrogel exhibits remarkable tensile strength (1.06 MPa), high ionic conductivity (1.45 S/m), and excellent environmental tolerance, maintaining its flexibility and conductivity even at −20 °C. Additionally, it demonstrates significant anti-swelling properties, broad-spectrum antimicrobial activity, and outstanding cytocompatibility (cell viability >97 %). As a multifunctional sensor, it shows high sensitivity (GF = 2.13), a fast response time, and stable performance over more than 1000 cycles. This hydrogel sensor reliably monitors physiological signals such as electrocardiograms (ECG), electromyograms (EMG), and respiratory patterns, demonstrating particular promise in diagnosing sleep-related breathing abnormalities in patients with heart failure. This study provides a robust and versatile platform for next-generation wearable devices.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Shuanghui Liu,Zefeng Ge,Mingxun Zeng,Huiyan Zhang
Aldehydes and ketones are regarded as important precursors for hydrocarbon fuel production due to their structural stability and ease of hydrodeoxygenation. In this study, a composite metal catalyst was constructed using alumina as the matrix and Zr and Ce as the active components, which was applied to catalyze the rapid pyrolysis of cellulose for the preparation of aldehydes and ketones. The synergistic roles of metal elements and the transformation pathway of aldehydes and ketones were elucidated, along with the influence of process parameters on product distribution and catalyst structure on activity and coke formation. The results demonstrate that the bimetallic alumina-supported catalyst outperformed the single-metal counterpart, with Zr-Ce/α-Al 2 O 3 showing higher aldehyde and ketone selectivity than Zr-Ce/γ-Al 2 O 3 due to two additional acid sites. Under in-situ pyrolysis at 450 °C and a 1:3 feedstock-to-catalyst ratio, 76 % selectivity to aldehydes and ketones was achieved. ZrO 2 and CeO 2 regulated the acidic sites of alumina and provided lattice oxygen, while the alumina support, in turn, enhanced the catalytic activity of the active metals. The co-precipitated catalyst, with higher BET surface area and stronger acidity, enabled a lower dosage and exhibited greater CeO 2 reducibility. Furfural was identified as the main product of catalytic pyrolysis. Under limited acid sites, it could be converted to 2-methylfuran via hydrogenation or to butanone through ring-opening. Excessive acidity promoted its oxygen addition, leading to acetic acid, which was subsequently ketonized to acetone. In addition, FTIR of the spent catalyst revealed oxygen in coke deposits mainly existed as bound water.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Yong Li,Xin Deng,Peng Cao,Haoxiang Liu,Rongmei Qing,Zejia Dai,Fengxuan Guo
Deep eutectic hydrogels (DES hydrogels), fabricated from deep eutectic solvents (DES), offer superior stability and applicability compared to traditional polymer-based hydrogels. However, most DES hydrogels exhibit substantial hysteresis during stretching and low electrical conductivity due to the viscous nature of the solvents. This study presents an effective approach to enhance DES hydrogel performance. By anchoring flexible chains at various scales and using water as a lubricant, we obtained a eutectic hydrogel with high conductivity, low hysteresis, frost resistance and long service life. Testing demonstrated a 2.28-fold increase in conductivity (1.28 S/m), a 2.5-fold increase in tensile strength, and 1363 % elongation at break. Furthermore, the hydrogel retained excellent flexibility and tensile strength after 60 days at room temperature in an open-air environment. This demonstrates the DES hydrogel's significant potential for flexible sensor applications. This research provides a viable strategy for preparing high-performance DES hydrogels.
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JOURNAL OF MATERIALS SCIENCE
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2025
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IF 3.9
Jiang Shaoqi,Jiang Shan,Chen Sikui,Liu Li,Yan Jiatong,Xiang Cheng,Guo Ronghui
Cellulose aerogel fibers with their unique combination of high porosity, low density, and robust mechanical properties, show great promise as candidates for thermal insulation materials and flexible devices. However, their mechanical performance is inherently limited, and conventional drying techniques such as freeze-drying (FD) and supercritical drying (SCD) are both time-consuming and energy-intensive, posing significant challenges for large-scale industrial applications. Atmospheric pressure drying (APD) has emerged as a simple and cost-effective alternative, demonstrating considerable potential in the fabrication of aerogel fibers. In this study, chitosan was incorporated during the dissolution stage to reinforce the cellulose framework. Following solvent exchange, the material was subjected to APD in an oven, resulting in the fabrication of low-shrinkage chitosan-reinforced cellulose aerogel fibers (CKAF). The porosity of CKAF can be controlled between 38 and 75% by selecting solvents with different surface tensions for solvent exchange and adjusting the affinity between the solvent and the CKAF framework during APD. The shrinkage of atmospheric pressure drying chitosan-reinforced cellulose aerogel fibers (APD-CKAF) with a chitosan content of 10% to cellulose was 11%, which was only 1.9% higher than that of FD (9.1%). However, the pore structure of the APD-CKAF is compact and uniform, with a pore size distribution ranging from 0 to 48 nm, primarily centered around 20 nm, and a porosity of approximately 75%. The APD-CKAF exhibits superior mechanical strength (22.1 MPa, a 16.3% improvement over the FD samples) and elongation at break (55.1%, a 111.5% increase compared with the FD samples). The APD-CKAF exhibits excellent thermal insulation properties over a wide temperature range. This study presents a low-cost and high-efficiency strategy for the fabrication of cellulose aerogel fibers, advancing their potential for thermal insulation applications.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Ao Li,Jun Xu,Dezhong Xu,Zhaohui Zhang,Ziji Deng,Daxian Cao,Jun Li,Wei Zhang,Fengshan Zhang
Real-time respiratory monitoring is pivotal for assessing sleep-related disorders, yet conventional single-modal sensors face critical limitations in reliability under complex physiological conditions. Herein, we present a biomimetic dual-modal platform synergizing a pressure-sensitive aerogel (TCMA) and humidity-responsive film (TCMF), both engineered from TEMPO-oxidized cellulose nanofibers (TOCNF) and MXene composites. The three-dimensional porous TCMA achieves graded pressure sensitivity (867.98 kPa −1 ) through dynamically tunable MXene-TOCNF contact networks, while the brick-and-mortar TCMF exhibits humidity-dependent interlayer expansion with rapid recovery (39 s). Cross-validated detection of thoracic-abdominal movements and nasal airflow patterns resolves single-sensor limitations, enabling reliable detection of simulated apnea events. Integrated with a wireless system, the ultralight platform (<0.003 g/cm 3 ) maintains 1000 cycles stability and conformal skin contact for prolonged sleep monitoring. Inspired by the hierarchical microstructure of natural softwood, this design bridges nanoscale material intelligence with clinical diagnostics, offering a sustainable, scalable solution through eco-conscious cellulose utilization, and setting new standards for multimodal wearable sensors in respiratory health management.
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INORGANIC CHEMISTRY COMMUNICATIONS
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2024
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IF 4.4
Jing Zhou,Yingde Xu,Yifan Wang,Shengli Zhu,Zhenduo Cui,Yanqin Liang,Hui Jiang,Xiang Ge,Zhaoyang Li
Calcium sulfate (CS) is a commonly used filling material for bone defects; however, its mechanical strength requires further enhancement. The hydration process of CS significantly influences its mechanical properties. This study aims to improve these properties by incorporating carboxymethyl cellulose (CMC) and silicon dioxide (SiO 2 ) to optimize the hydration process of calcium sulfate hemihydrate (CSH). After adding CMC, the content of CSH in the hydrated material significantly increased, while the amount of calcium sulfate dihydrate (CSD) decreased. In the XPS analysis, the Ca 2p peaks exhibited notable shifts following the addition of CMC and SiO 2 . The mechanisms by which the hydration process influences mechanical strength were further analyzed. It was found that Ca 2+ ions from CSH chelated with CMC, while SiO 2 formed Si-O-Ca bonds with Ca 2+ , both affecting the hydration process of CSH in different ways. The optimal addition amounts of CMC and SiO 2 were both determined to be 1.5 %. Compared to pure CS, the mechanical properties of the experimental group increased by 520 %, rising from 4.28 MPa to 22.25 MPa. Additionally, the injectivity and erosion resistance were improved. All materials showed no cytotoxicity in hemolysis and cell experiments. In summary, this study demonstrates how the mechanical strength of CS can be enhanced by incorporating CMC and SiO 2 to influence its hydration process.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Nan Zhang,Wenze Li,Jinfeng Li,Qianwen Wang,Baochang Li,Jianwei Zhang,Tao Zhang,Zhigang Li,Yaorui Li,Bo Tian,Hongtao Zhao
Cellulose-based hydrogel materials have emerged as a highly promising candidate for the adsorption and removal of uranium from aqueous solutions. However, the subpar mechanical properties of cellulose hydrogels pose a significant obstacle to their practical implementation. In this study, a radiation-induced graft polymerization (RIGP) technique is employed to fabricate the hydrogel matrix, and subsequently, a phosphorylated modified cellulose-based hydrogel (PTCH) uranium adsorbent is synthesized through a one-step phytic acid modification process. Micro-Raman imaging is utilized to meticulously characterize and analyze the distribution and density of cross-linking domains within the hydrogel network. The findings reveal that the modified PTCH boasted both a loose chemical cross-linking network and a compact physical cross-linking network formed by hydrogen bond reconstruction, leading to a remarkable enhancement in its mechanical properties. It exhibits a compressive strength of up to 0.13 MPa and a strain of 49.20 %. Concurrently, the U(VI) adsorption performance of the hydrogel is investigated. The synergistic complexation effect of phosphate and carboxyl groups on U(VI) substantially augment the adsorption capacity of the hydrogel, with a theoretical maximum adsorption capacity for U(VI) reaching 449.5 mg·g −1 . In summary, PTCH effectively overcomes the limitations of traditional cellulose-based adsorbent materials, presenting a novel avenue for the development of cost-effective and efficient uranium adsorbents.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Li Xu,Zhongzhao Zheng,Lulu Fang,Jianlang Zhou,Xiaofeng Zheng,Qiujie Gao,Changyan Xu
A cellulose-derived CDs/PVA composite film was prepared as a multifunctional food packaging material. CDs were synthesized by a one-pot water heating method, with a size distribution ranging from 1.05 to 6.65 nm, and were incorporated into the PVA matrix at concentrations between 0.2 % and 0.8 % to create the nano-composite film. SEM images confirmed the compatibility and potential hydrogen bonding between the low-concentration CDs (<0.4 wt%) and the matrix. This interaction improves the mechanical strength of the composite films. Optical analysis of CDs/PVA films showing good UV shielding effect. Thermal characteristics showed that moderate CDs doping (0.4 wt%) reduced the T g of PVA to 64.1 °C and increased the carbonization rate to 8.49 % at 500 °C. The film with 0.6 wt% CDs demonstrated exceptional DPPH/ABTS scavenging rates of 61.56 % and 97.07 %, along with antibacterial efficiencies of 85 % against E. coli and 87 % against S. aureus . In the blueberry storage test, this film inhibited 10 % spoilage and 10 % weight loss within 8 days. Safety assessment test confirms that the total migration of the film is <10 mg/dm 2 . The nanocomposite films we prepared provide a sustainable bio-based solution for food packaging.
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ENVIRONMENTAL ENGINEERING SCIENCE
·
2025
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IF 1.8
Jiahao Liu,Jun Zhang,Na Li
An environmentally friendly aerogel (CE/LN), composed of cellulose (CE) and lignin (LN) was synthesized via one-pot cross-linking method at room temperature, followed by freeze-drying. The CE/LN aerogel exhibited good mechanical properties and abundant functional groups, making it an effective adsorbent for the adsorption and removal of the antibiotic trimethoprim (TMP) from water. This study systematically investigated the effects of solution pH, aerogel dose, contact time, initial TMP concentration, temperature, ionic strength, and various water sources on TMP adsorption. The CE/LN aerogel demonstrated a higher TMP adsorption capacity of TMP than the CE aerogel across the entire pH range of 2.0–10.0. The adsorption process was well described by the Langmuir isotherm model and pseudo-second-order kinetic model. The CE/LN 6% aerogel achieved the highest adsorption capacity, with a theoretically maximal TMP uptake of 0.402 mmol/g at pH 6.0. However, high concentration of NaCl significantly reduced TMP uptake on the CE/LN 6% aerogel due to the electrostatic shielding effect. After five cycles of adsorption, the CE/LN 6% aerogel maintained a high adsorption capacity, retaining 80% of its initial uptake. Combined with the adsorption performance, the Fourier transform infrared spectrometry and X-ray photoelectron spectroscopy analyses spectroscopy analysis before and after TMP adsorption, it can be concluded that the adsorption mechanism involved hydrogen bonding, electrostatic interactions, and π–π electron donor–acceptor interactions. Thus, the CE/LN aerogel, with its simple preparation method, good adsorption capacity, and reusability, shows great potential for widespread application in the removal of antibiotics from water.
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