INDUSTRIAL CROPS AND PRODUCTS
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2025
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IF 6.2
Zhiping Su,Mingrui Pan,Shizhen Qin,Zuli Zheng,Haiyan Xu,Shaobo Zhang,Liping Ning,Shanshan Jia
Traditional wood-plastic composites (WPCs) usually employed fossil-based non-degradable plastics as the polymer matrix, making WPCs poor in sustainability and degradability. Herein, a new kind of sustainable and degradable WPCs, wood-vitrimer composites (WVCs, i.e., WPs/Cel-DIP composite), was developed by integrating wood powders (WPs) into a cellulose-based dynamic imine polymer (Cel-DIP) matrix via heat-pressing formation technique. The resulting WVCs exhibited ultrahigh tensile strength (56.1 MPa), flexural strength (94.9 MPa), Young's modulus (2.5 GPa), and flexural modulus (10.3 GPa). The WVCs possessed extremely high thermostability with the glass-transition temperature ( T g ) of 230–250 °C and thermal degradation temperature ( T d ) of ˃ 300 °C. The WVCs also exhibited low water absorption ratio (as low as 2 wt%) and excellent water resistance. Moreover, such WVCs could be chemically degraded by depolymerized the dynamic imine crosslinking networks of Cel-DIP via acid-catalyzed hydrolysis. Such WVCs represent a kind of novel, sustainable, and environmentally friendly biomass-based composites.
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BIOMACROMOLECULES
·
2025
·
IF 5.4
Disi Qiao,Nacun Yang,Lin Shi,Longyi Chen,Jun Gu,Xinhua Peng,Chuntao Chen,Dongping Sun
Peripheral nerve injury accounts for 2–5% of all trauma admissions worldwide and is a significant clinical challenge. In this research, a novel nerve guidance conduit biomaterial based on a tungsten oxide nanomaterial-decorated oxidized bacterial cellulose hydrogel was developed for repairing sciatic nerve injury. The bacterial cellulose was oxidized by sodium periodate, and aldehyde functional groups were introduced to enhance its reactivity and biocompatibility. At the same time, the incorporation of the tungsten oxide nanomaterial not only significantly improved its antibacterial properties but also rendered the material antioxidant. The functional recovery of the sciatic nerve in the rat transection model was assessed by the sciatic functional index, gastrocnemius histological analysis, and nerve histological analysis. This bacterial cellulose/tungsten oxide nanoparticle hybrid hydrogel biocomposite can effectively promote sciatic axon regeneration, Schwann cell activity, and nerve function recovery. This novel biocomposite provides a new therapeutic strategy for the repair of a sciatic nerve injury.
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PLANT BIOTECHNOLOGY JOURNAL
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2025
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IF 10.5
Jing Wang,Shunyu Xiang,Xiaoyan Wang,Yang Shen,Changyun Liu,Xin Zhu,Weina Liu,Shanzhi Wang,Xiaozhou Ma,Jin Huang,Xianchao Sun
Summary Zinc (Zn 2+ ) is an essential micronutrient that regulates plant growth, immunity and antiviral defence mechanisms. However, its limited bioavailability often necessitates excessive application, resulting in inefficiencies in production and environmental stress. In response, we propose an environmentally friendly and sustainable approach to enhance the utilization of Zn 2+ . We developed CNC@PDA@Zn 2+ by embedding Zn 2+ into the polydopamine (PDA) coating of cellulose nanocrystals (CNCs). Leveraging the high cell permeability of CNCs, this material increased the transport capacity of Zn 2+ in plants and demonstrated the ability to inactivate viral particles in vitro . Moreover, CNC@PDA@Zn 2+ showed a superior induction of resistance while reducing Zn 2+ content, specifically by reprogramming the expression and localization of the resistance-related non-specific lipid transfer protein 2 (nsLTP2), which enhanced the salicylic acid (SA) signalling pathway in plants. Furthermore, the high conservation of nsLTP2 in flowering plants increases the potential application range of CNC@PDA@Zn 2+ . Importantly, CNC@PDA@Zn 2+ represents the most effective Zn 2+ -based antiviral nanomaterial to date, achieving its effects at the lowest reported Zn 2+ concentration. Overall, our results highlight that CNC@PDA@Zn 2+ can more effectively upregulate the conserved nsLTP2, thereby inducing viral defence responses via the SA pathway. This strategy not only improves the operation and utilization rate of Zn 2+ but also reduces its environmental residues, laying a theoretical foundation for the development of antivirus defence.
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CHEMICAL ENGINEERING JOURNAL
·
2025
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IF 13.2
Shengwang Zou,Junfeng Wang,Yingqiu Wu,Yanan Dong,Huijao Wang,Yi Nie,Hongxiang Xu
Ionic liquids (ILs) have shown significant potential for industrial application in the cellulose regeneration process. However, the accumulation of impurities, especially phosphorus (P) from the raw materials, in the ionic liquid (IL) aqueous solutions generated during the cellulose regeneration process, seriously affects the performance of IL and the quality of the final products. In this study, a crystallization precipitation method was employed to investigate the removal of impurities from IL aqueous solutions. The results demonstrated that the presence of IL accelerated the phase transformation of amorphous calcium phosphate to hydroxyapatite, although it prolonged the time to reach equilibrium. The highest P removal efficiency was achieved at a Ca/P molar ratio of 1.67:1, with an increase in pH further enhanced the removal efficiency. The morphology and size of crystallization precipitates were significantly influenced by the reaction time, pH, IL concentration, and temperature. By optimizing the reaction conditions, a P removal efficiency of 88.82 % was achieved in IL aqueous solutions generated during the established hundred-ton-scale cellulose regeneration demonstration production line, with the process also exhibited synergistic removal capabilities for NO 3 − , SO 4 2− , and Mg 2+ . These findings suggested that this method effectively removed the P and other inorganic impurities from the IL aqueous solutions generated during the cellulose regeneration process.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
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IF 9
Peiqing Zhang,Ruxue Bai,Yan Guo,Zhen Ma,Sihang Li,Quan Feng,Zhenyu Li,Haihua Wang
Global attention has focused on perfluorooctanoic acid (PFOA) because of its environmental persistence, bioaccumulation, and high toxicity. This study investigated evaluating the effectiveness of modified bacterial cellulose membrane (BCM) in removing PFOA from aqueous solutions using the ultrafiltration technique. Epigallocatechin gallate (EGCG) and polyethylenimine (PEI) were cross-linked onto BCM via the Michael addition and Schiff base reaction. The cross-linked layer acted as a functional and adhesive layer to immobilize PEI-grafted carboxylated multi-walled carbon nanotubes (cMP), obtaining BCM/EP/cMP as an adsorptive membrane for PFOA removal. The pure water flux of BCM/EP/cMP was 42.90 ± 2.87 L m -2 h −1 , increased by 40 % compared to BCM. In dynamic filtration, the maximum removal rate of BCM/EP/cMP reached 98.10 % for 5 mg L -1 of PFOA. The incorporation of amine-rich and positively charged cMP enhanced the removal rate of PFOA by 50 % compared to BCM/EP. Additionally, BCM/EP/cMP showed over 83 % removal of natural organic matter (NOM) in antifouling experiments and maintained a flux recovery rate over 88 % after 5 cycles. In summary, the biologically prepared high-efficiency separation membrane showed potential for removing emerging PFOA from aqueous solutions.
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CARBOHYDRATE POLYMERS
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2025
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IF 12.5
Lili Dai,Yi Geng,Xiaofeng Ding,Zhikun Zhang,Chenhuan Lai,Daihui Zhang,Changlei Xia,Yongxian Lai
Hydrogels are widely recognized for their excellent flexibility and biocompatibility, making them promising materials for skin regeneration and wound care. However, the practical application of traditional hydrogels is limited by their inadequate mechanical strength and poor adhesive properties, hindering their effectiveness in wound healing. In this study, we designed a cellulose-based composite hydrogel, which overcomes these limitations by combining cellulose dialdehyde (DAC), carboxymethyl chitosan (CMCS) and polymerizable acrylamide (AM). The hydrogel features a double network structure: a dynamic chemical bonding network via a Schiff base reaction and a covalent bonding network formed through free radical polymerization. The resulting hydrogel exhibited remarkable mechanical properties, including tensile strength (>400 kPa), stretchability (>1400 %), toughness (>2900 kJ m −3 ), and good self-adhesion to skin (2.7 kPa). Additionally, it demonstrated excellent biocompatibility and significantly accelerated wound healing in a mouse model of full-thickness skin defects. The synthesized hydrogel represents a promising advancement in the development of wound care materials. Its enhanced mechanical strength, self-adhesion, and biocompatibility make it a strong candidate for clinical applications in skin regeneration and wound therapy, addressing critical gaps in the current hydrogel-based wound care technologies.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·121803
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IF 7.5
Bowen Wu,Xiaopeng Zou,Yue Wang,Yaozu Mi,Hongying Shi,Hailian Zang,Chunyan Li
To enable low-cost 2,3-butanediol (2,3-BD) biorefining, we established an integrated dual-strain, staged coculture that converts straw cellulose to 2,3-BD within a single low-temperature regime. In this study, a cellulose-degrading bacterium Flavobacterium johnsoniae W24H was isolated, which maintains fluidity and antioxidant capacity by adjusting the composition and content of its cell membrane at 15 °C to adapt to low-temperature environments. Simultaneously, it can efficiently degrade cellulose, accumulating 5.87 g/L of reducing sugars within 7 days and exhibiting high cellulase activity. Genomic analysis and molecular docking and enzymatic characterization revealed that W24H possesses a complete cellulase system. Specifically, the key endoglucanase CelB75 and β-glucosidase BglX92 maintain high activity at low temperatures, providing a molecular basis for their low-temperature degradation capability. Under identical low-temperature conditions, the engineered strain W24H- celB75-bglX92 significantly enhanced cellulose saccharification efficiency, achieving a reducing sugar yield of 10.49 g/L. Additionally, by establishing a staged culture system of an efficient cellulose-degrading bacterium (W24H- celB75-bglX92 ) and a 2,3-BD producing bacterium ( Raoultella terrigena HC6), efficient conversion of corn straw cellulose to 2,3-BD was achieved. At 20 °C, compared to the original strain combination, this system optimized the metabolic division of labor between cellulose hydrolysis and product synthesis, resulting in an output of 2,3-BD reaching 0.33 g/g, an increase of 60.1 %. This study achieved efficient biotransformation of straw cellulose into 2,3-BD under low-temperature conditions, providing a foundation for low-energy biorefinery processes with reduced energy input and for the valorization of agricultural waste.
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DESALINATION
·
2026
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IF 9.9
Jiale Zhou,Yangning Zhao,Haiyu Dong,Yi Mi,Yun Zhang
Osmotic energy, as a clean and renewable energy source derived from the salinity gradient between seawater and river water, holds great potential for alleviating global energy shortages. However, the development of high-performance nanofluidic membranes with both high ion selectivity and ion flux remains a critical bottleneck for its practical application. Herein, we report a sulfonated cellulose nanofibers (SCNF) membranes constructed with three-dimensional (3D) nanochannels featuring high charge density and pore density (2 × 10 10 cm −2 ). Under a 50-fold salinity gradient, the SCNF membrane exhibits an exceptional cation selectivity of up to 0.977. These superior ion transport properties directly translate into outstanding osmotic energy conversion performance: the maximum power densities reach 14.85 W m −2 and 111.06 W m −2 under 50-fold and 500-fold concentration gradients, respectively. Notably, the SCNF membrane maintains its power density stably for 60 days, demonstrating remarkable long-term operational durability. When mixing seawater and real river, the membrane achieves a maximum output power density of up to 16.37 W m −2 ; even upon scaling up the active testing area to 7.07 mm 2 , a considerable output power density of 1.64 W m −2 is still attained. This work provides a promising green membrane material for advancing the commercialization of osmotic energy technology.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Jieliang Wang,Xiaobin Zhong,Wenqiang Zhu,Jing Lv,Qin Zhang,Zhiyong Gao,Zhao Cao
Columbite is a strategic mineral resource, and its surface physical and chemical properties are similar to those of associated Fe-bearing gangue mineral dolomite, making flotation separation and enrichment difficult. This study achieved the effective separation of columbite from ankerite by employing carboxymethyl cellulose (CMC) as a biodegradable depressant in a benzohydroxamic acid (BHA) collector system. Flotation tests showed that CMC strongly depressed ankerite while having a minimal effect on columbite. Increasing the CMC concentration from 0 to 7.5 mg/L caused a sharp drop in ankerite recovery from 90.34 % to 10.33 %, in contrast to a moderate decrease in columbite recovery from 85.31 % to 70.41 %. Under these optimal conditions, artificial mixed-ore flotation produced a concentrate with a Nb 2 O 5 grade of 69.45 % and a columbite recovery of 81.15 %. Particle-bubble contact tests, zeta potential, FTIR, XPS and AFM analyses demonstrated that the carboxyl groups of CMC exhibited a strong affinity for the Ca, Mg, and Fe active sites on the ankerite surface. This interaction induced chemical adsorption and the formation of stable Ca/Mg/Fe-COOR complexes, which effectively masked the ankerite surface and prevented subsequent adsorption of BHA, thereby resulting in significant depression. In contrast, the weak interaction between CMC and columbite allowed the chemisorption of BHA on the Fe and Nb active sites of columbite to be preserved, maintaining its excellent floatability. This selective mechanism enabled the highly efficient separation of columbite from ankerite. Consequently, CMC is identified as a potential high-efficiency and biodegradable depressant for the flotation separation of columbite and ankerite.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.5
Wenlin Zhou,Yiqing Chen,Keyi Cen,Ziming Li,Cuilan Huang,Wei Su,Peiyuan Li
In this study, a multifunctional self-gelling hemostatic powder (CQA) was designed using natural biomaterials by integrating the antioxidant and biocompatible properties of Aloe vera gel (AV) with the hemostatic efficacy of calcium carboxymethylcellulose (Ca-CMC) and the antibacterial activity of quaternary ammonium chitosan (QCS). The CQA powder rapidly absorbs moisture upon contact with blood, forming a physically sealing hydrogel network through electrostatic and hydrogen bonding interactions. In vitro evaluations revealed that the optimized formulation, CQA 0.3 , exhibits outstanding adsorption capacity, antioxidant activity, and biocompatibility. Compared to commercial chitosan-based hemostatic powder (CS), CQA 0.3 demonstrated significantly enhanced procoagulant performance, with a blood clotting index (BCI) of 8.48% versus 56.65% for CS, and promoted accelerated blood cell adhesion. In whole-blood coagulation assays, the CQA 0.3 group achieved rapid clotting within 180 s, while bleeding persisted in the CS group beyond 210 s. In practical hemorrhage models, CQA 0.3 reduced blood loss to 94.0 ± 8.7 mg, substantially lower than both the CQ group (225.7 ± 6.03 mg) and the CS group (292.7 ± 14.46 mg). These findings highlight the potential of CQA 0.3 as a safe, efficient, and adaptable hemostatic agent for emergency and clinical applications, combining rapid gelation, high biocompatibility, and excellent wound adaptability.
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COMPOSITES PART B-ENGINEERING
·
2026
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IF 14
Nan Liu,Xinpeng Che,Wenjing Cao,He Zhang,Xinming Wei,Mingjie Li,Anshan Xiao
The growing demand for sustainable and distributed power sources, driven by advances in the Internet of Things and flexible wearable electronics, has intensified the focus on thermoelectric energy harvesting. Although inorganic thermoelectric materials (e.g., Bi 2 Te 3 ) exhibit high conversion efficiency, their rigidity, high cost, and dependence on scarce or toxic elements hinder their use in flexible applications. In contrast, ionic thermoelectric materials (i-TEs) show advantages, including high Seebeck coefficients, flexibility, and biocompatibility. However, conventional ionogels typically possess disordered polymer networks, which lead to low ionic conductivity and limited Seebeck coefficient enhancement. To address this challenge, we use cellulose nanofibrils (CNFs) to construct a well-aligned micro-nanochannel via directional freezing. This design offers continuous and low-resistance pathways, markedly facilitating ion transport. Meanwhile, nano-confinement effects enhance ion selectivity at low concentrations and promote asymmetric ion distribution, leading to a synergistic improvement of thermoelectric performance. The resulting ionic thermoelectric material achieves a Seebeck coefficient of 3.47 mV K −1 and an outstanding power output of 223.51 mW m −2 at ΔT∼20 °C, comparable or superior to many reported conventional i-TE systems. This work proposes a novel strategy for regulating ion migration pathways and provides a fundamental basis for developing high-performance flexible ion-thermoelectric devices and self-powered sensors.
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JOURNAL OF MEMBRANE SCIENCE
·
2015
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IF 5.056
Pan Wang,Jianqiang Meng,Mingli Xu,Tao Yuan,Ning Yang,Tian Sun,Yufeng Zhang,Xianshe Feng,Bowen Cheng
Cellulose membrane has been widely used for bioseparation and blood purification but suffers from fouling issue and insufficient biocompatibility. Surface grafting of zwitterions onto membrane surface can effectively alleviate this issue. Current grafting methods are mostly based on free radical polymerizations and have limitations of multi-step process, the requirement of inert atmosphere and inevitable flux decline. Herein we put forward a simple method for cellulose membrane (CM) zwitterionization. The modification was carried out via a one-step method based on the alkoxysilane condensation reaction using three silane coupling agents including (3-carboxypropylbetaine-propyl)-trimethoxysilane (CPPT), (3-sulfopropylbetaine-propyl)-trimethoxysilane (SPPT), and (3-sulfobutylbetaine-propyl)-trimethoxysilane (SBPT). Membrane surfaces were characterized by ATR-FTIR, XPS , SEM, water contact angle (WCA) and streaming potential. Membrane mechanical performance, pore size and its distributions were measured. The antifouling property, hemocompatibility and cytocompatibility of the membranes were evaluated by protein adsorption, platelet adhesion, cell attachment and MTT assay experiments. The results show that sulfobetaines and carboxybetaines were successfully grafted on the CM surface. The obtained zwitterions-grafted membranes show excellent resistance to protein adhesion, platelet adhesion and cell attachment. More importantly, the biocompatibility of the CM membrane was retained.
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