Journal of Functional Biomaterials
·
2023
·Vol. 14
·期 1
·43
·
IF 4.8
Xiaoyu Wang,Yuyang Zhou,Melissa Johnson,Cameron Milne,Sigen A,Yening Li,Wenxin Wang,Nan Zhang,Qian Xu
To explore the potential applicability of chitosan (CTS), we prepared aldehyde chitosan (CTS-CHO) with chitosan and sodium periodate via oxidation reaction and then a chitosan-based hydrophilic and antibacterial coating on the surface of poly (lactic acid) (PLA) film was developed and characterized. The oxidation degree was determined by Elemental analyser to be 12.53%, and a Fourier transform infrared spectroscopy was used to characterize the structure of CTS-CHO. It was evident that CTS-CHO is a biocompatible coating biomaterial with more than 80% cell viability obtained through the Live/Dead staining assay and the alamarBlue assay. The hydrophilic and antibacterial CTS-CHO coating on the PLA surface was prepared by ultrasonic atomization assisted LbL assembly technique due to Schiff’s base reaction within and between layers. The CTS-CHO coating had better hydrophilicity and transparency, a more definite industrialization potential, and higher antibacterial activity at experimental concentrations than the CTS coating. All of the results demonstrated that the ultrasonic atomization-assisted LbL assembly CTS-CHO coating is a promising alternative for improving hydrophilicity and antibacterial activity on the PLA surface. The functional groups of CTS-CHO could react with active components with amino groups via dynamic Schiff’s base reaction and provide the opportunity to create a drug releasing surface for biomedical applications.Keywords:chitosan;PLA;hydrophilic;antibacterial;coating
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Ju Lv,Lang Pan,Yawei Zhu,Xinyue Zhang,Xueqiong Yin
Conventional solar evaporators often suffer from salt accumulation, biofouling, and structural instability, limiting their practical use in sustainable freshwater production. Herein, a lightweight, self-floating chitosan/polyvinyl alcohol/genipin aerogel (CPG) was developed through an eco-friendly, photosensitizer-free crosslinking and aerogelation strategy for solar-driven desalination and wastewater purification. The optimized CPG aerogel combines broadband optical absorption of 97 %, robust mechanical stability, and an interconnected macroporous network, enabling rapid water replenishment, vapor transport, and salt rejection. Under 1 sun irradiation, CPG achieved a high evaporation rate of 3.85 kg·m −2 ·h −1 and maintained stable performance in hypersaline brine containing 25 wt% NaCl. During real seawater desalination, the evaporation–condensation process effectively rejected non-volatile ions, producing purified water that met WHO drinking water standards. CPG also generated dye-free condensates from dye-containing wastewater through distillation separation and interfacial retention, rather than direct dye degradation. In addition, the aerogel exhibited stable evaporation performance across pH 2–12 and light-enhanced antibacterial activity with > 99.9 % bacterial inactivation. This integrated self-floating aerogel design provides a promising platform for durable solar desalination and wastewater purification.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Bioresources and Bioproducts
·
2026
·
IF 19.9
Yusi Bu,Guoxi Xia,Minglei Zhang,Jiabo Wang,Qiuhua Chen,Guoxiang Wang,Xiaolian Shi,Fang Sui
The development of robust biomimetic interfaces remains challenging due to the inherent instability of native cell membranes when integrated into functional devices. Herein, we reported a bio-based functional composite in which a chitosan-derived conductive hydrogel served as a multifunctional matrix to achieve unprecedented stabilization of red blood cell membranes (RBCMs). Leveraging the three-dimensional polycationic network and abundant amino groups of this natural polysaccharide, the hydrogel electrostatically anchored RBCMs while preserving their native fluidity and membrane-bound acetylcholinesterase conformation-overcoming a long-standing bottleneck in biomembrane-based material engineering. Integration of carboxylated multi-walled carbon nanotubes endowed the composite with efficient electron transfer capability without compromising biocompatibility. The resulting biomimetic interface retained 85.8% of its initial electrochemical response after 7 days of continuous operation and enabled sensitive detection of organophosphate pesticides in real agricultural samples (apples, oranges, and tomatoes). This work established chitosan hydrogel as a versatile bio-based platform for constructing stable biomembrane composites, expanding the application scope of natural polysaccharides in functional material design for environmental monitoring.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
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
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
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.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
·
2026
·
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.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
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.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Food Chemistry-X
·
2026
·
IF 9.2
Xiaoxue Lu,Jingna Liu,Yuanhong Zhuang,Bingli Wang,Peng Fei,Wenqiang Lai
A series of thermo-responsive PNIPAAm-CS/SA composite hydrogel films were synthesized via radical polymerization and ionic cross-linking. FTIR, XPS, and NMR confirmed the successful covalent grafting of PNIPAAm onto the chitosan (CS) backbone. XRD and SSNMR analyses revealed that the grafting disrupted the CS crystalline regions, inducing an amorphous structural transition. The PNIPAAm-CS copolymer solutions exhibited LCST values in the range of 30–32 °C. Notably, compared with the corresponding precursor systems, the hydrated films exhibited an apparent thermo-responsive transition onset approximately 1 °C higher in temperature-dependent optical measurements, suggesting that film-network formation influenced the thermal response behavior of the PNIPAAm-containing system. Grafting modification significantly improved optical and mechanical properties: PNIPAAm-CS/SA-4 achieved a peak transmittance of 82.81% (vs. 50.78% for pure CS/SA), while PNIPAAm-CS/SA-2 reached an optimal balance with 22.6 MPa tensile strength and ∼ 100% elongation. Furthermore, antibacterial evaluation of the PNIPAAm-CS copolymers showed that, although the inhibitory activity decreased with increasing PNIPAAm incorporation, measurable antibacterial effects against E. coli and S. aureus were retained. Together with the preliminary package-integrated visual response demonstration, these results suggest that the hydrated films may serve as candidate temperature-responsive indicator materials for further development in intelligent packaging.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Polymer Materials
·
2026
·
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.
✓ 已验证
DOI
高影响因子
IONICS
·
2026
·
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.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
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.
✓ 已验证
产品关联
DOI
高影响因子
CEMENT AND CONCRETE RESEARCH
·
2026
·
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.
✓ 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）