INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2026
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IF 8.5
Rui He,KangLi Yang,XuYu Long,Qian Su,ZhiQing Yuan,ShiMing Fu,ZeXin Dai,ShouTong Meng,CanCheng Li
Surface fouling and bacterial contamination present significant challenges to daily life and industrial production, motivating the development of multifunctional surfaces with antifouling and antimicrobial properties. In this context, the development of multifunctional surfaces based on environmentally friendly green materials, which possess both superhydrophobic anti-fouling and highly efficient antibacterial properties, has become one of the approaches to address the aforementioned issues. In this study, superhydrophobic antimicrobial multifunctional coatings were successfully prepared by using environmentally friendly materials chitosan (CS) and curcumin (Cur) as antimicrobial agents, shellac and rosin instead of the traditional fluoride as low surface energy substances and adhesives, and nano‑calcium carbonate (Nano-CaCO 3 ) as hydrophobic particles. The multifunctional coating exhibits a contact angle exceeding 150° for both water and other liquids, demonstrating exceptional liquid-repellent properties and superior antifouling performance. Under an 80 g load, the coating withstands 45 cycles of sandpaper abrasion testing and 50 cycles of adhesive tape peeling testing. Furthermore, the composite coating samples show a 28% increase in tear strength and a 24% enhancement in puncture resistance compared to the pristine counterpart. The coating exhibits significant antibacterial activity against Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ), achieving antibacterial efficiency rates of 99.1% and 99.3%, respectively. In strawberry preservation tests, the shelf life of the samples was extended to the sixth day. Composed of non-toxic and sustainable chemicals, the coating integrates superhydrophobicity, antifouling properties, and antimicrobial functionalities, thereby demonstrating broad applicability across diverse sectors, including paper protection, packaging, biomedical applications, and the food industry.
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DIAMOND AND RELATED MATERIALS
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2026
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IF 5.1
Luyu Ji,Meilin Zhang,Hanzhong Cui,En Zhang,Jin Zhang
The properties of biomass porous carbon materials are important for supercapacitor energy storage devices. This study presents a novel B and N co-doped hierarchical porous carbon (BPC) synthesized from chitosan via a facile K 2 CO 3 activation strategy. The chitosan precursor was pretreated to enhance its suitability for carbonization, resulting in a highly conductive carbon skeleton with a developed hierarchical porous structure and a specific surface area of 507 m 2 /g. The effects of B and N element doping on the surface morphology and electrochemical properties of BPC were investigated. The electrochemical properties of the materials were characterized using cyclic voltammetry, galvanostatic charge-discharge tests, and impedance spectroscopy. The optimized sample (CBP-1) demonstrated exceptional electrochemical performance: achieving a specific capacitance of 527 F g −1 at 4.5 A g −1 and exhibiting outstanding cycling stability with 84% capacitance retention after 10,000 charge/discharge cycles at 10 A g −1 . Electrochemical impedance spectroscopy confirmed superior interfacial properties with a low equivalent series resistance (R s ) of 1.19 Ω. Chitosan distinguishes itself from other biomass materials by its rich -NH 2 groups, which allow for effective nitrogen self-doping. This intrinsic advantage translates into enhanced conductivity and wettability for BPC, contributing to its improved electrochemical performance. B and N co-doping creates structural defects that facilitate electrolyte penetration and shorten ion diffusion paths while providing pseudo capacitance. Chitosan-based B and N co-doped hierarchical porous carbon is a promising capacitor-modified electrode material with potential applications in energy storage.
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ACS Applied Polymer Materials
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2026
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IF 5.2
Yidan Zhang,Wensi Jiang,Yuqian Liu,Yang Huang,Chao Liu,Huining Xiao,Farzad Seidi
Injectable self-healing hydrogels with intrinsic antibacterial properties represent a promising advancement for wound management. This study presents a natural-based hydrogel system for full-thickness wound healing, fabricated via the hybridization of quaternary ammonium cellulose phenylboronic acid (QAC-PBA) with quaternary ammonium glycol chitosan (QGCS) and the in situ encapsulation of berberine (BBR). The quaternary ammonium groups endow intrinsic antibacterial properties, and the dynamic boronate esters confer self-healing and injectable properties to the hydrogel. Additionally, the release of BBR provides an additional antibacterial mechanism by targeting possible wound sites that are not in direct contact with the hydrogel. The hydrogel demonstrated a strong antibacterial effect (up to 94.1% against E. coli and 99.8% against S. aureus), fast self-healing, injectability, and high biocompatibility (>100% viability against NIH3T3 cells). In a full-thickness wound model, the hydrogel dressing achieved 95% wound closure in 14 days compared to 89% for the Tegaderm film control.
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IONICS
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2026
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IF 3.4
Zhao Jintao,Wang Xinyang,Cao Yang,Zhang Zhenjie,Zhang Xiaowei,Zhou Shuai,Zhang Hezhe
Ionic Polymer-Metal Composite (IPMC), as a typical electroactive polymer, has broad application prospects in flexible actuators, bionic robots, and micro-electromechanical systems. However, traditional Nafion-based IPMCs are costly and have limited mechanical properties. In this study, chitosan (CS) was used as the matrix, and reduced graphene oxide (rGO) was introduced to construct rGO-CS composite ion-exchange membranes. The IPMC actuator is fabricated by pressing a silver foil onto a chitosan-based membrane through heat treatment. The results showed that the introduction of rGO significantly enhanced the mechanical strength and continuity of the conductive channels of the composite membrane, as well as improved the water retention ability and ion migration efficiency, thereby enhancing the bending deformation ability and output force of IPMC. This research provides a new idea for the design of low-cost and biobased IPMC materials.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Kewang Zheng,Xinyue Luo,Chuhao Yang,Cong Pan,Wei Li,Zufeng Xiao,Caiqin Qin
The sustainable management of solid wastes and the development of cost-effective catalysts for wastewater remediation are two pressing challenges in environmental engineering. Herein, cellulose-rich waste paper pulp (WPP) and iron-containing warm-paste residues (WPR) were synergistically upcycled into a three-dimensional (3D) hierarchical porous composite through chitosan-assisted crosslinking followed by carbonization. By integrating biomass-derived carbon frameworks with iron-rich solid waste, a robust spherical catalyst with tailored pore architecture and highly dispersed active sites was successfully fabricated. The optimized Fe0.4@CS0.7-6 N-700 catalyst exhibited outstanding performance toward peroxymonosulfate (PMS) activation for sulfamethoxazole (SMX) degradation. The incorporation of WPP effectively suppressed the aggregation of iron species, promoted the formation of a conductive carbon network, enhanced mass transfer, and exposed abundant accessible catalytic sites. Mechanistic investigations demonstrated that Fe nanoparticles and graphitic-N species functioned synergistically as dual catalytic centers, facilitating PMS activation through both radical and non-radical pathways. Density functional theory calculations further revealed enhanced PMS adsorption and accelerated interfacial electron transfer on the Fe N coupled active sites, accounting for the superior catalytic activity. This work establishes a structure–activity relationship for waste-derived porous catalysts and provides a sustainable strategy for simultaneously realizing solid-waste valorization and efficient removal of emerging organic contaminants.
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CEMENT AND CONCRETE RESEARCH
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2026
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IF 14
Jianan Guan,Guanghong Lai,Min Huang,Gang Chen,Jiansong Yuan,Xiao Liu,Shanshan Qian,Yunbo Xu,Haitang Zhu,Ziming Wang,Suping Cui
Chemical admixtures offer a simple and effective approach to controlling cement hydration. However, achieving both cement paste dispersion and regulation of hydration temperature rise remains a challenge for existing admixtures. A crosslinked polymer (FCMC) was synthesized via copolymerization of acrylic acid and unsaturated carboxymethyl chitosan, and its structure was verified to match the intended design. The effects of FCMC on cement paste performance and its mechanism for regulating temperature rise were investigated. Results show that FCMC (0.2% dosage) significantly enhances cement paste fluidity (increased by 200%) and reduces the peak temperature (decreased by 42.15%) without notably affecting compressive strength. The adsorption and chelation effects of FCMC markedly inhibit crystal nucleation and growth, delay phase boundary reactions, and result in a denser structure with fewer defects. These findings contribute to the innovation and development of admixture structures and provide a theoretical basis for controlling temperature-induced cracking in concrete.
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Surfaces and Interfaces
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2026
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IF 6
Shuya Lu,Yunsi Wang,Yongcheng Li,Guanshun Xie,Hongling Ge,Zerongruo Sun,Peng Zhang,Benhua Xu,Bingxin Liu
Two-dimensional Ti 3 C 2 T x MXene exhibits promising application prospects in the field of resistive random-access memory (RRAM) owing to its unique layered structure, abundant surface functional groups, and tunable band structure. However, the modulation of its electronic structure is critical for promoting the application of Ti 3 C 2 T x MXene in such semiconductor devices. Herein, chitosan (CS) was incorporated with Ti 3 C 2 T x MXene to construct CS-MXene composite films, which were subsequently employed as the resistive layer in the RRAM devices. The conductivity of Ti 3 C 2 T x MXene can be switched from a metallic-like state to a semiconducting state, and the resistive switching behaviors of CS-MXene hybrid films could be regulated by adjusting the mass ratio of Ti 3 C 2 T x MXene to CS. When the mass ratio of two components was 0.5, the as-fabricated Al/CS-MXene/ITO/glass device exhibited the most outstanding resistive switching (RS) performance, characterized by a lower operating voltage, a higher on/off ratio, excellent retention, and reliable endurance. Mechanistic analysis revealed that the RS behavior originates from the electron trapping/detrapping dynamics within the CS-MXene resistive layer. This work demonstrates high-performance RRAM devices based on CS-MXene composites, offering a feasible strategy for modulating the electronic structure of two-dimensional Ti 3 C 2 T x MXene. Chitosan (CS) was incorporated with Ti 3 C 2 T x MXene to construct CS-MXene composite films, which were subsequently employed as the resistive layer in the RRAM devices. The conductivity of Ti 3 C 2 T x MXene can be switched from a metallic-like state to a semiconducting state, and the resistive switching behaviors of CS-MXene hybrid films could be regulated by adjusting the mass ratio of Ti 3 C 2 T x MXene to CS. When the mass ratio of two components was 0.5, the as-fabricated Al/CS-MXene/ITO/glass device exhibited the most outstanding resistive switching (RS) performance, characterized by a lower operating voltage, a higher on/off ratio, excellent retention, and reliable endurance. Mechanistic analysis revealed that the RS behavior originates from the electron trapping/detrapping dynamics within the CS-MXene resistive layer. Download: Download high-res image (133KB) Download: Download full-size image
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INTERNATIONAL DENTAL JOURNAL
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2026
·Vol. 76
·期 5
·109799
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IF 5.2
Xinda Li,Zhijia Liu,Xinzhu Liu,Jianing Wang,Jinlai Bao,Wuwei Li
Background To explore the osteogenic promotion of carboxymethyl chitosan (CMCS), clarify the signalling pathways involved and preliminarily evaluate the translational potential of CMCS in transcrestal sinus floor elevation. Methods Overlapping targets were identified by integrating potential CMCS targets and bone regeneration-related genes, and protein-protein interaction and GO/KEGG enrichment analyses were conducted. The GEO dataset GSE50743 was externally validated. Bone marrow-derived mesenchymal stem cells from mice were induced to osteogenic differentiation in vitro and treated with CMCS alone or in combination with the p38 inhibitor SB203580 or the VEGFR2 inhibitor SU5416. The osteogenic phenotypes and mechanism-related changes were determined by ALP, Alizarin Red S staining, RUNX2 immunofluorescence, qPCR and Western blotting. A retrospective comparative clinical study further evaluated radiographic, functional and patient-reported outcomes after transcrestal sinus floor elevation. Results We identified 187 common targets of CMCS-bone regeneration. Enrichment analyses revealed that these targets were primarily involved in cell adhesion, inflammatory and immune regulation, extracellular matrix remodelling, and osteogenesis-related pathways, including MAPK and VEGF signalling. Validation with GSE50743 confirmed significant positive enrichment of candidate gene set under osteogenic conditions. In vitro, CMCS increased ALP activity, mineralised nodule formation and the expression of RUNX2, ALP and OPN, whereas inhibition of p38 or VEGFR2 partially reduced these effects. Clinical findings showed that the two groups were generally similar in terms of safety, implant stability and patient-reported outcomes, whereas the CMCS group had better volume maintenance. Conclusions CMCS promotes osteogenesis and mineralisation, at least partly via p38 MAPK and VEGF–VEGFR2 signalling. Retrospective clinical findings also indicate its potential utility in transcrestal sinus floor elevation.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Yunfeng Tian,Zongxue Yu,Jiao Chen,Chao Peng,Jingyu Zheng,Wei Liang,Lidan Deng,Guangcheng Yang
Accordion MXene carriers produce MBT-loaded CS@M-T microcapsules; chitosan acts as pH-triggered responsive switch. • The MXene barrier, pH inhibition & photothermal healing enhance coating long-term anti-corrosion performance. • CS@M-T microcapsules in SMP offer coatings pH-responsive anti-corrosion and NIR photothermal self-healing capacities. • The pH-responsive CS@M-T microcapsules in SMP coatings prevent inhibitor leakage and scratch-induced failure. Organic anti-corrosion coatings have been widely utilized in the domain of metal corrosion protection. However, challenges such as the premature release of corrosion inhibitors during application and the inability of scratched coatings to self-heal have driven researchers to develop innovative corrosion-resistant protective coatings. This study presents a novel active anti-corrosion organic coating that exhibits pH-responsive and photothermal self-healing properties. To tackle these issues, accordion-shaped MXene (Ti 3 C 2 T x ), was synthesized to load 2-mercaptobenzothiazole (MBT), which was subsequently encapsulated with chitosan (CS) to create CS@M-T micro-nano capsules. These capsules were integrated into shape-memory polymers (SMP) for enhanced metal corrosion protection. The chitosan (CS) within the composite endows the capsules with pH-triggered release performance, effectively regulating the release of the corrosion inhibitor. Research findings indicate that under near-infrared light irradiation, the composite coating can achieve temperatures of 101°C，with a geometric self-healing rate for coating scratches of approximately 70%; after 30 days of immersion in a 3.5 wt% NaCl solution, the water absorption rate was recorded at only 2.15%. Electrochemical impedance spectroscopy (EIS) tests were performed on coatings with various additives. After 50 days of immersion in a 3.5 wt% NaCl solution, the low-frequency impedance modulus of the CS@M-T/SMP coating was four orders of magnitude greater than that of the pure SMP coating, maintaining a value of 1.80 × 10 9 Ω·cm², with a stable corrosion inhibition efficiency of 99.9%. In conclusion, this study effectively addressed the challenge of premature release of corrosion inhibitors in active/passive protective coatings, providing valuable insights for practical applications. Download: Download high-res image (152KB) Download: Download full-size image
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2026
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IF 8.7
Li Shuofeng,Junmin Wang,Zhi Li,Qianqian Wang,Chun Wang,Qiuhua Wu
Herein, a novel chitosan-based magnetic bio-sorbent (M-Cs-BD@TBB) was synthesized through grafting chitosan with benzaldehyde (BD) and then crosslinking with 1,3,5-tris(bromomethyl)benzene (TBB) before modification with Fe 3 O 4 . Owing to the presence of multiple functional groups (-OH, -C=N, O , benzene ring), high porosity, and excellent wettability, M-Cs-BD@TBB demonstrated good adsorption performance for benzoylurea insecticides (BUs). Hydrogen bonding, π-π stacking, halogen bonding, and pore-filling were proved to be the potential adsorption mechanism. Moreover, the adsorption process of M-Cs-BD@TBB for BUs followed the Langmuir model and the pseudo-second-order kinetics model, indicating monolayer adsorption predominantly governed by chemical adsorption. Furthermore, M-Cs-BD@TBB exhibited remarkable utilization potentiality thanks to its outstanding preparation reproducibility, stability, and repeatability. Then, this reliable and innovative bio-sorbent coupled with high performance liquid-phase chromatography provided an attractive method for effectively trapping and detecting trace levels of BUs in food samples.
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JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
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2026
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IF 4
Jingfeng Xu,Pingxiong Cai,Yuanfeng Pan
BACKGROUND Faced with the relentless depletion of fossil fuels and the global environmental crisis, the strategic utilization of abundant biomass resources has drawn significant attention, offering vast application prospects in the field of food packaging. This study pioneers an investigation into the effects of incorporating purple tea extract (PTE) in chitosan (CS) films on their fundamental physical properties and functionalization, leading to an active and intelligent CS/PTE composite film with pH-responsive characteristics and improved physical properties. RESULTS X-ray diffraction and Fourier transform infrared analyses indicate that CS and PTE interact primarily through hydrogen bonding, demonstrating high compatibility. The impact of varying PTE concentrations on the water vapor permeability, transparency, mechanical properties, antioxidant activity, antimicrobial performance, and pH responsiveness of the CS film was systematically investigated. The experimental results show that PTE significantly enhances the films’ light and water vapor barrier properties. Specifically, films containing more than 6% PTE exhibit improved antioxidant, antimicrobial, and food preservation capabilities. The resulting composite film demonstrated excellent antioxidant and antibacterial performance with a DPPH radical scavenging rate of 83.2%, and inhibitory rates exceeding 90% against Escherichia coli and Staphylococcus aureus , as well as pH-responsive color changes. CONCLUSION Overall, the CS/PTE composite film represents a highly promising active and intelligent food packaging material. It not only expands the range of naturally available materials for smart packaging films but also holds significant potential for practical applications in the food industry. © 2026 Society of Chemical Industry.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2026
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IF 8.7
Wei-jia Li,Zhi-bo Zhang,Wan-jin Yan,Zhi Chen,Cong-ming Tang,Li Chang
Adsorption technology is essential for water remediation and resource recovery to reduce environmental pollution. Although Metal-organic frameworks (MOFs) exhibit outstanding adsorption capabilities, their high preparation cost hinders their wide application. Alternatively, chitosan (CS) hydrogels offer wastewater treatment at an affordable cost. Herein, polyethyleneimine-modified CS hydrogel coated with MOF (Ce-BTC/CS-PEI) was prepared as a high-capacity sorbent for methyl orange (MO) sequestration. A comprehensive characterization of the Ce-BTC/CS-PEI composite was carried out, involving morphological and elemental analysis (SEM-EDS), crystal phase identification (XRD), surface area and porosity measurements (BET), surface charge evaluation (zeta potential), molecular structure determination (FTIR), and surface chemical state analysis (XPS). The increased interfacial contact area and the positively charged zeta potential of Ce-BTC/CS-PEI enabled efficient adsorption of MO in MO/methylene blue mixtures. The experimental data demonstrated strong agreement with the Langmuir equilibrium isotherm and second-order rate equations. Ce-BTC/CS-PEI demonstrated exceptional uptake performance, reaching 819.67 mg·g −1 after 18 h. Thermodynamic analysis showed that adsorption was a natural exothermic procedure. After four cycles, the material retained 70% of its adsorption efficiency. Therefore, Ce-BTC/CS-PEI exhibits excellent capability as an excellent, ecologically friendly, and inexpensive adsorbent for selective MO removal.
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