CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 4.3
Jinzhao Wang,Xiantao Zhang,Tingting Ren,Lanyue Zhang,Peng Liu,Xuejiao Hu,Lu Huang
Traditional photothermal membrane distillation (PMD) for seawater desalination suffers from low photothermal conversion efficiency and poor operational stability under high-salinity brine conditions. In response to these limitations, this study reports a hydrogel composite membrane (HCM) mediated photothermal membrane distillation device. The HCM consists of a chitosan/agarose hydrogel (CAH) layer, carbon nanotube (CNT) coating, and polytetrafluoroethylene (PTFE) hydrophobic membrane. The CNT layer significantly improves the photothermal conversion efficiency, achieving 98.5% solar absorption under standard solar irradiation. The CAH modulates intermediate water states by tuning the chitosan-to-agarose ratio, thereby reducing water evaporation enthalpy and enabling stable freshwater production. Under 1 kW m −2 solar intensity (i.e. 1 sun) for 1.5 h, the water flux of the device increased by 40.7% than pure CNT/PTFE membrane. Simultaneously, CAH employs its three-dimensional porous structure and abundant amino (–NH 2 ) and hydroxyl (–OH) groups to achieve synergistic salt rejection through electrostatic repulsion. The device achieved continuous and stable freshwater production in a 7 wt% NaCl solution, demonstrating outstanding salt-rejection properties. This study developed hydrogel composite membrane to enhance water flux and system stability in PMD, proposing novel concepts for performance enhancement of PMD.
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产品关联
DOI
高影响因子
Food Bioscience
·
2026
·
IF 5.9
Wenqi Yin,David Julian McClements,Zhiheng Zhang,Hangyan Ji,Zhengyu Jin,Chao Qiu
This study aimed to develop and characterize novel chitosan (CS)-based composite films by incorporating metal-phenolic networks (MPNs) assembled from cinnamaldehyde (CA), tannic acid (TA), and five different metal ions (Ca 2+ , Mg 2+ , Zn 2+ , Cu 2+ , or Fe 3+ ). The objection was to evaluate the impact of metal ion type on the films' physicochemically and functional properties for potential active packaging application. The results demonstrated that the incorporation of cinnamaldehyde-tannic acid-metal (CTM) particles significantly enhanced the films’ performance. Notably, the Zn 2+ -based (CTZn) film exhibited the most pronounced improvement in tensile strength (269 % increase) and hydrophobicity (water contact angle = 97.50°). All CTM composite films showed enhanced thermal stability, reduced water vapor permeability, and excellent UV-blocking capacity compared to the pure CS film. Furthermore, the composite films displayed stronger antibacterial activity and higher antioxidant activity than the control. In conclusion, CTM networks, especially those involving Zn 2+ , effectively enhance the multifunctional properties of CS films, making the developed composite promising candidates for high-performance, active food packaging materials.
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DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.5
Sen Cao,Guoliang Dong,Taomei Yang,Jiaying Jin,Liangjie Ba,Donglan Luo,Zhibing Zhao
In this study, chitosan (CS) and xanthan gum (XG) were used as the base materials to prepare edible films containing cornmint oil (CO). The physical properties and structural characteristics of the films were thoroughly analyzed, along with an investigation into their preservation effect on blueberries. Scanning electron microscopy (SEM) showed that cornmint oil was successfully integrated into the edible film; however, aggregation was observed at higher concentrations. Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) confirmed successful incorporation of the components. Notably, the CXG-1.5 film exhibited excellent thermal stability, barrier properties, significant antibacterial and antioxidant activities, compared to other formulations. During a storage period of 8 d for blueberries, compared with the control group, the CXG-1.5 group reduced the decay rate by 44.02%, reduced the weight loss rate by 75.85%, and reduced the malondialdehyde increase by 44.39%. At the same time, it maintained a high hardness and minimized the loss of 48.8% of total soluble solids and 56.34% of anthocyanins. Consequently, this novel cornmint oil-containing edible film effectively prolongs the shelf life of blueberries. These results suggest that the edible film developed in this study holds substantial potential for application in post-harvest preservation of fruits and vegetables.
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产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2018
·
IF 5.158
Ningxiao Yuan,Lu Xu,Bo Xu,Jianhao Zhao,Jianhua Rong
Chitosan derivative-based self-healable hydrogels with enhanced mechanical properties are reported, which were prepared by polymerization of acrylic acid (AAc) in 2-hydroxypropyltrimethyl ammonium chloride chitosan (HACC) solution. The PAAc/HACC hydrogels exhibit tensile fracture stress as high as 3.31 MPa and a Young's modulus of 2.53 MPa. They can maintain their original shape after 30 repeated compression cycles under various strain conditions, with a compression stress of more than 60 MPa at 99% strain. The damaged PAAc/HACC hydrogels can heal together in the presence of a NaCl salt solution with a self-healing efficiency of up to 61%. In addition, the PAAc/HACC hydrogels have high ionic conductivity and can serve as electrolytes for supercapacitors. The analysis suggests that all these good properties of the PAAc/HACC hydrogels mainly result from their high-density dynamic ionic interactions structure.
研究领域:
高分子材料科学
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生物医学工程
·
功能材料
·
组织工程
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药物递送系统
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再生医学
·
电化学器件
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DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2019
·
IF 4.561
Guoli Chen,Kun Song,Xiaoming Huang,Wenbo Wang
Titanium dioxide (TiO 2 ) colloid was synthesized by using tetrabutyl titanate . TiO 2 (KH-570) intermediate was prepared by etherification reaction of TiO 2 colloid and KH-570. The CS-GMA intermediate was prepared by ring-opening reaction of chitosan (CS) and glycidyl methacrylate (GMA). Finally, copolymerization two intermediates obtain a new adsorbent, TiO 2 (KH-570)-g-(CS-GMA). The results manifest that the maximum adsorption amounts of toluene and Pb(II) are 56.62 mg/g and 623.56 mg/g, respectively. The adsorption of TiO 2 (KH-570)-g-(CS-GMA) adsorbent for toluene and Pb(II) accord with the pseudo-second-order kinetics mechanism and Langmuir equation, indicate that the TiO 2 (KH-570)-g-(CS-GMA) adsorbent has better adsorption effect on toluene and Pb(II).
研究领域:
环境科学
·
材料科学
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化学工程
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污染控制
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吸附技术
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DOI
高影响因子
POLYMER BULLETIN
·
2014
·Vol. 71
·期 11
·2923-2944
·
IF 1.491
Yan Huiqiong,Chen Xiuqiong,Wu Tiantian,Feng Yuhong,Wang Chunxiu,Li Jiacheng,Lin Qiang
The surface modification with poly(methyl hydrosiloxane) (PMHS) using a grinding method as a pesticide carrier had been successfully achieved. The characteristics of the modified kaolin were represented by Fourier transform infrared, X-Ray diffraction, BET specific surface area measurements, laser particle size analysis, transmission electron microscopy and contact angle measurement. Subsequently, immobilization of acetamiprid onto clay’s surface was carried out by means of freeze-drying technology. And the drug-loaded clays were encapsulated in alginate-chitosan composite beads by extrusion into calcium chloride solution. The composite beads showed regularly spherical shapes and uniform sizes with diameters of 1.44 ± 0.24–1.75 ± 0.19 mm. The immobilization and release of acetamiprid were carried out to examine the effect of the modified kaolin on the properties of the composite bead. The results showed that the intensive force of superfine pulverization during the grinding process was effective to increase the specific surface areas of the modified kaolin with particle size reduction. The modified kaolins as promising carrier materials had improved the drug loading rate and encapsulation efficiency from 4.15 and 42.01 % for alginate-chitosan composite beads to 6.02 and 82.95 %, which were higher than 4.33 and 54.29 % for SA-CS-kaolin composite beads, respectively. The controlled-release formulation containing the modified kaolin had shown slow and sustained release properties to promote the efficient use of organic pesticide to reduce pollution effect on the environment.
研究领域:
材料科学
·
农业化学
·
药物递送系统
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环境友好材料
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粘土矿物加工
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DOI
高影响因子
CHEMOSPHERE
·
2023
·
IF 8.8
Lei Wu,Xiaolu Gong,Cong Ma,Lan Xu,Ming Li,Chen Lyu,Nan Sun
In this study, hydrogels generated by the Schiff base reaction between citral and chitosan (CS) were used for the first time to improve the anti-bacterial property of forward osmosis (FO) membranes. The composite membranes were characterized by scanning electron microscopy (SEM), Fourier transform infrared (FTIR), Water contact angle (WCA), Zeta potential and confocal laser scanning microscopic (CLSM). In the FO filtration experiment, the membrane performance of TFC-1 with 1 M sodium chloride solution as the draw solution and deionized water as the feed solution was the best, with the water flux of 25.54 ± 0.7 L m −2 h −1 and the reverse salt flux of 4.7 ± 0.4 g m −2 h −1 . Although the hydrogel coating produced a certain hydraulic resistance, the flux of the modified membrane was only reduced by about 8%, compared with the unmodified membrane. However, the anti-bacterial property ( Pseudomonas aeruginosa ) and anti-fouling properties (bovine serum protein and lysozyme protein) of the modified membranes were improved, showing good antibacterial properties (99%) and flux recovery rate (over 90%). The modified method has the advantages of easy access to raw materials, simple operation and no risk of secondary pollution, which can effectively reduce the cost of chemical cleaning and extend the service life of the membrane. The modification of membrane by chitosan-based hydrogel is a promising option in the field of membrane anti-bacteria.
研究领域:
材料科学
·
膜科学与技术
·
生物医学工程
·
环境功能材料
·
抗菌材料
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2014
·
IF 4.086
Minghao Sun,Haoxiang Zhong,Shuren Jiao,Hanqi Shao,Lingzhi Zhang
Carboxymethyl chitosan (C-CTS) was firstly reported as a water soluble binder for LiFePO 4 cathode in Li-ion batteries. The electrochemical performances of LiFePO 4 cathode with C-CTS binder was investigated and compared with the conventional water-soluble sodium carboxymethyl cellulose (CMC) and the commercial non-aqueous polyvinylidene difluoride (PVDF). LiFePO 4 cathode with C-CTS exhibited a comparable cycling performance, but better rate capability than that of CMC and PVDF, retaining 65% capacity of C/5 at 5 C rate as compared with 55.9% and 39.4% for CMC and PVDF, respectively. In addition, LiFePO 4 cathode with C-CTS exhibited excellent cycling performance at 60 °C, retaining 91.8%/62.1% capacity after 80 cycles at 1 C/10 C, respectively.
研究领域:
材料科学
·
电化学
·
能源存储
·
高分子化学
·
电池技术
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DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Ruxia Ning,Xichuang Cheng,Fuhou Lei,Jiufang Duan,Kun Wang,Jianxin Jiang
Natural and high-quality biomass-based coating films are considered promising packaging to consumers. However, the poor mechanical properties and weak antimicrobial activity of biomass materials have limited their practical application. A cleaner and low-cost strategy is used to prepare antimicrobial, self-recovery, and biocompatible coating films using tamarind kernel powder (TKP) and chitosan (CS). The TKP protein and chitosan chains were covalently cross-linked with tetrakis(hydroxymethyl)phosphonium chloride (THPC) to form a three-dimensional network based on THPC-amine dynamic bonds, and act as a sacrificial bond. Then, the hydrogen bond forms an interpenetrating network to build a strong multi-network film. Thus, the THPC multi-crosslinking TKP based films showed enhanced stretchable property (increased from 3.23 % to 77.54 %), and self-recovery after 30 min of recovery. Additionally, the film has been found to exhibit low water vapor permeability, low oxygen transmittance rate, and excellent antimicrobial efficiency (maximum inhibition zones: 24.39 mm). Moreover, the prepared films were demonstrated to be biocompatible and non-hemolytic based on cell viability and hemolytic activity assays. The method described herein could broaden the scope of biomass-based materials in the realm of antimicrobial coating films.
研究领域:
高分子材料科学
·
食品包装工程
·
生物医学材料
·
天然高分子化学
·
抗菌材料
·
可再生资源利用
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DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Xinghai Huang,Jianmin Li,Jingjin He,Jianwei Luo,Jinyun Cai,Jianhua Wei,Peiyuan Li,Haiyi Zhong
To fulfill the current need for intelligent active food packaging. This study incorporated the curcumin inclusion complexes (CUR-CD) into chitosan/polyvinyl alcohol polymer to develop a new intelligent active film. The structures of films were analyzed by Fourier-transform infrared (FT-IR), scanning electron microscope (SEM), and so on. The CP-Cur150 film displays exceptional mechanical properties, water vapor barrier, and UV blocking capabilities as demonstrated by physical analysis. The CP-Cur150 film exhibited free radical scavenging rates on 2,2-diazo-di-3-ethylbenzothiazolin-6-sulfonic (ABTS) (98 %) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) (87 %). Additionally, it showed inhibitory effects on Gram-positive bacteria ( Staphylococcus aureus ) and Gram-negative bacteria ( Escherichia coli ), reducing live colony counts by approximately 2.7 and 1.3 Log 10 CFU/mL, respectively. The films were used to monitor the shrimp's freshness in real time. With the spoilage of shrimp, the film exhibited clear color fluctuations, from light yellow to red. In addition, the evaluation of the impact of films on pork pH, total volatile basic nitrogen, and total bacterial counts demonstrated that the CP-Cur150 film displayed the most significant effectiveness in preserving freshness, thereby extending the shelf life of pork.
研究领域:
食品科学与技术
·
高分子材料
·
活性与智能包装
·
食品保鲜
·
纳米复合材料
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DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2012
·
IF 3.628
Ke Zhang,Pengyu Zhuang,Zhengke Wang,Youliang Li,Zhiqiang Jiang,Qiaoling Hu,Minying Liu,Qingxiang Zhao
For the development of biocompatible and degradable biomaterials, a kind of well-defined graft copolymer consisting of chitosan back-bone and amphiphilic PEO-PLLA-PEO branch chains was synthesized by Cu(0) catalyzed one-pot strategy combining “click” chemistry and single electron transfer-nitroxide radical coupling (SET-NRC) reaction. First, the precursors of 6-azide- N -phthaloyl-chitosan, TEMPO-PEO-alkyne and mPEO-PLLA-Br were designed and produced. Then, the one-pot coupling reactions between these precursors were performed in the presence of nanosized Cu and PMDETA. The efficiencies of the coupling reactions were greater than 90% determined by the FTIR and ESR spectra. The structure of graft copolymer with 43% of the grafting ratio was confirmed by the spectral analysis. This work provided a route to prepare chitosan graft copolymer.
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DOI
高影响因子
POLYMER DEGRADATION AND STABILITY
·
2026
·
IF 7.4
Lu Bai,Wei Tan,Yin Tian,Lei Tan,Ying Chang,Guixiang Song,Ping Li,Yuanlin Ren,Xiaohui Liu
To improve the flame retardancy of lyocell fabrics, in this paper, an eco-friendly flame retardant and antibacterial lyocell fabric (FR@Si-lyocell) was fabricated by surface grafting modification. The surface morphology, combustion properties and antibacterial rate of FR@Si-lyocell were investigated. FR@Si-lyocell exhibited excellent char-forming ability with residual char of up to 40.24 wt% and 11.78 wt% at 800 °C in N 2 and air, respectively. Its limiting oxygen index (LOI) value increased from 17.6% to 32.3%, and the peak heat release rate (PHRR) and total heat release (THR) decreased significantly by 94.4% and 74.5% compared to the control sample. The synergistic flame retardant mechanism of gas and condensed phases was proposed by analyzing the volatile pyrolysis products and char residue generated during the combustion process. In addition, FR@Si-lyocell showed excellent antibacterial properties, with inhibition efficiencies as high as 99.9% and 99.7% against Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ). This work provided an efficient and eco-friendly method to prepare multifunctional lyocell fabrics with potential application fields.
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）