Carbohydrate Polymers最新文献

Magnetic nanoparticles deposition based on the peculiar pore structure of nanocellulose: preparation and properties of efficient thin-layer wave-absorbing materials 基于纳米纤维素特殊孔隙结构的磁性纳米颗粒沉积：高效薄层吸波材料的制备与性能研究

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2025-04-28 DOI: 10.1016/j.carbpol.2025.123679

Ziqi Xu , Jian Huang , Zhenxuan Liu , Zhiyan Chen , Guangming Yuan

{"title":"Magnetic nanoparticles deposition based on the peculiar pore structure of nanocellulose: preparation and properties of efficient thin-layer wave-absorbing materials","authors":"Ziqi Xu , Jian Huang , Zhenxuan Liu , Zhiyan Chen , Guangming Yuan","doi":"10.1016/j.carbpol.2025.123679","DOIUrl":"10.1016/j.carbpol.2025.123679","url":null,"abstract":"<div><div>The development of high-performance electromagnetic wave-absorbing materials is an important research topic for solving electromagnetic pollution. Cellulose is a low-cost and biodegradable natural biomass material, but the single dielectric loss mechanism of its carbonation product limits the wave absorption performance. Here, we propose a new strategy to construct hierarchical porous nanofibers with heterogeneous pore geometries (100–200 nm) by controlled carbonization of TEMPO-oxidized cellulose nanofibers. Magnetic Fe/Fe<sub>3</sub>O<sub>4</sub> nanoparticles were embedded in these pores by a one-step annealing process using ferrocene as the iron source. The annealed composite (MF@C) offers dual-scale structural advantages: the unique heterogeneous structure of pores enhances multiple reflections of electromagnetic waves and interfacial polarization, and the magnetic nanoparticles are uniformly confined in the pores, synergistically optimizing impedance matching and magnetic dielectric loss. The MF@C-750 achieves an excellent reflective loss of −35.04 dB at a thickness of only 1.4 mm (RL < -10 dB) and an effective absorption loss of 3.44 GHz. 3.44 GHz effective absorption bandwidth (EAB). This performance is attributed to the synergistic interaction between the anisotropic porous carbon framework and magnetic nanoparticles. This study combines biomass-derived anisotropic porous carbon with confined magnetic nanoparticles, providing a sustainable pathway for the design of efficient microwave absorbers.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"362 ","pages":"Article 123679"},"PeriodicalIF":10.7,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Inhibition mechanism of pectin-modified nano-selenium on Phytophthora capsici and the improvement of the resistance in pepper 果胶修饰纳米硒对辣椒疫霉的抑制机理及对辣椒抗病性的提高

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2025-04-28 DOI: 10.1016/j.carbpol.2025.123676

Zhijia Zhang, Shujun Huang, Xin Huang, Tianbing Zhou, Tao Zhang, Yuxin Xu, Mengmeng Li, Jialing Wang, Shuai Wang, Zhan Hu, Ranfeng Sun, Dong Li

{"title":"Inhibition mechanism of pectin-modified nano-selenium on Phytophthora capsici and the improvement of the resistance in pepper","authors":"Zhijia Zhang, Shujun Huang, Xin Huang, Tianbing Zhou, Tao Zhang, Yuxin Xu, Mengmeng Li, Jialing Wang, Shuai Wang, Zhan Hu, Ranfeng Sun, Dong Li","doi":"10.1016/j.carbpol.2025.123676","DOIUrl":"10.1016/j.carbpol.2025.123676","url":null,"abstract":"<div><div>The principal disease impacting pepper production is <em>Phytophthora blight</em>, which nano‑selenium (nano-Se) controls well but has high storage requirements and low heat resistance. Varying pectin amounts yielded pectin-modified nano-Se (nano-Se@PT) with 0.1 %, 0.5 %, 1 %, and 2 % concentration. As pectin content grew, nano-Se@PT particle size reduced, zeta potential value rose, and thermogravimetric temperature climbed. The incorporation of nano-Se@PT can improve its stability and thermal resistance at 40 °C and 70 °C. Nano-Se@PT outperformed nano-Se in fungicidal and <em>Phytophthora capsici</em> inhibition. In vitro antifungal experiments showed that nano-Se@PT could significantly inhibit mycelium growth with an EC<sub>50</sub> of about 4 mg/L. The particles adsorbed on the surface of mycelium, inducing death by destroying cell membranes, mitochondria, and nuclei. Non-targeted metabolomics analysis showed that nano-Se@PT treatment disrupted the mycelium growth and metabolism and changed amino acids, nucleotides, and sugar levels. In vivo experiments, 2 % nano-Se@PT had the lowest disease index and the best preventive therapy. Rhizosphere soil microbial analysis showed that nano-Se@PT recruited beneficial microorganisms such as <em>Bacteroides, Lactobacillus,</em> and <em>Bifidobacterium</em> in pepper plants, improving their <em>Phytophthora capsici</em> resistance and growth. The findings suggest that nano-Se@PT might be a unique pepper disease control technique and shed light on plant fungal disease management.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"362 ","pages":"Article 123676"},"PeriodicalIF":10.7,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In vitro fecal fermentation characteristics of starch-chitosan composite prepared by screw extrusion 螺旋挤压法制备淀粉-壳聚糖复合材料体外发酵特性研究

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2025-04-26 DOI: 10.1016/j.carbpol.2025.123657

Shaokang Wang , Qian Wang , Jinchuan Xu , Jinglin Yu , Shujun Wang

{"title":"In vitro fecal fermentation characteristics of starch-chitosan composite prepared by screw extrusion","authors":"Shaokang Wang , Qian Wang , Jinchuan Xu , Jinglin Yu , Shujun Wang","doi":"10.1016/j.carbpol.2025.123657","DOIUrl":"10.1016/j.carbpol.2025.123657","url":null,"abstract":"<div><div>In this study, we prepared a series of composites with various chitosan-to-starch ratios by means of screw extrusion. The morphology and structural order of the composite were examined, and the fermentability was investigated through an <em>in vitro</em> human fecal fermentation model. Fourier transform infrared (FTIR) spectroscopy demonstrated the formation of hydrogen bonds between starch and chitosan in the composite, and X-ray diffraction (XRD) analysis indicated the structural order of the composite was enhanced with increasing chitosan proportions. The addition of chitosan slowed down the pH drop rate during the fermentation, and high chitosan proportion decreased the production of short-chain fatty acids (SCFAs), especially butyrate. The final butyrate concentrations of the composite with chitosan to starch ratio of 1:6 (CS:S = 1:6, 0.97 mmol/g) was almost twice that of the composite with chitosan to starch ratio of 2:1 (CS:S = 2:1, 0.51 mmol/g). Health-promoting microbes including <em>Agathobacter</em>, <em>Prevotella</em>_9, <em>Ruminococcus</em>, and <em>Bifidobacterium</em> were obviously promoted by extruded starch. Moreover, the composite sample with chitosan to starch ratio of 1:6 (CS:S = 1:6) exhibited a good synergistic effect in regulating the microbiota composition, reflected by the increase in the relative abundance of <em>Agathobacter</em> and <em>Prevotella</em>_9. This finding demonstrated that the ratio of starch to chitosan might be a controlling factor in determining the fermentation properties of screw extruded composite.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"361 ","pages":"Article 123657"},"PeriodicalIF":10.7,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143886308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A flexible film sensor based on sodium alginate/silk nanofiber for real-time monitoring of the ambient temperature and personnel respiration in flame environment 一种基于海藻酸钠/丝纳米纤维的柔性薄膜传感器，用于火焰环境中环境温度和人员呼吸的实时监测

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2025-04-26 DOI: 10.1016/j.carbpol.2025.123664

Tianyun Lu , Xiaokun Han , He Wang , Guiting Liu

{"title":"A flexible film sensor based on sodium alginate/silk nanofiber for real-time monitoring of the ambient temperature and personnel respiration in flame environment","authors":"Tianyun Lu , Xiaokun Han , He Wang , Guiting Liu","doi":"10.1016/j.carbpol.2025.123664","DOIUrl":"10.1016/j.carbpol.2025.123664","url":null,"abstract":"<div><div>Natural polymers are considered powerful candidate for preparing a new generation of intelligent sensors, however, their application in fire environment is limited restricted by the low flame retardancy and thermal stability. Herein, we developed a novel flexible film (SSGP) entirely composed of bio-mass, namely natural silk nanofibers, sodium alginate and phytic acid, via solution casting and self-assembly strategy. It exhibited reliable tensile properties (11.01 MPa), high flame retardancy (LOI reached 38 %), and thermal stability. Specifically, SSGP not only showed sensitive and reversible response at different temperatures (50-125 °C) with a GF of 10.8, but also triggered warning within 2.2 s of being exposed to a flame without being incinerated. Moreover, SSGP responded to humidity changes in the environment (22-94 % RH) and could be used for respiratory monitoring, with a response/recovery time of only 0.76 s/1.01 s. Additionally, SSGP based on natural polymers retain degradability (39.8 % within 30 days). Thus, SSGP had the potential to be integrated as a core component into sensor for real-time monitoring of ambient temperature and respiration of personnel in steelworks, fire rescue, battlefield and other flame environment. This study may provide new insights into the application of natural polymers in the flexible multifunctional sensor.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"361 ","pages":"Article 123664"},"PeriodicalIF":10.7,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143882604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Encapsulation of Lactiplantibacillus plantarum in W/O/W emulsion stabilized with whey protein isolate and konjac glucomannan complex 乳清分离蛋白和魔芋葡甘露聚糖络合物稳定W/O/W乳剂中植物乳杆菌的包封

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2025-04-25 DOI: 10.1016/j.carbpol.2025.123661

Jiahui Guo , Cong Xu , XinYu Neng , Jiamin Zhang , Xuefei Wu , Xuan Liu , Yongchen Liu , Zhongmei Tan , Zhanmei Jiang , Juncai Hou

{"title":"Encapsulation of Lactiplantibacillus plantarum in W/O/W emulsion stabilized with whey protein isolate and konjac glucomannan complex","authors":"Jiahui Guo , Cong Xu , XinYu Neng , Jiamin Zhang , Xuefei Wu , Xuan Liu , Yongchen Liu , Zhongmei Tan , Zhanmei Jiang , Juncai Hou","doi":"10.1016/j.carbpol.2025.123661","DOIUrl":"10.1016/j.carbpol.2025.123661","url":null,"abstract":"<div><div>This experiment investigated the encapsulation of <em>Lactiplantibacillus plantarum 1.0317</em> in a water-in-oil-in-water (W/O/W) emulsion to significantly enhance the activity of <em>Lactiplantibacillus plantarum 1.0317</em> under storage conditions, during pasteurization, and in simulated in vitro gastrointestinal digestion environments. <em>Lactiplantibacillus plantarum 1.0317</em> was encapsulated in emulsion using whey protein isolate (WPI) alone or non-covalent complex of whey protein isolate and konjac glucomannan (KGM). Compared with the WPI-stabilized emulsion, the WPI-KGM stabilized emulsion had smaller particle size, better rheological properties, higher embedding efficiency and markedly improved the vitality of <em>Lactiplantibacillus plantarum 1.0317</em> after storage, pasteurization, low pH treatment, high concentration of bile salt treatment and simulated gastrointestinal digestion. As the mass ratio of WPI-KGM composite was 3:1, the highest embedding efficiency of W/O/W emulsion was 89.76 %. Moreover, compared with the free <em>Lactiplantibacillus plantarum 1.0317</em> and its other encapsulated emulsion, when the WPI-KGM complex mass ratio is 3:1, the W/O/W emulsion containing <em>Lactiplantibacillus plantarum 1.0317</em> has the highest activity of probiotics after 28 days of storage, pasteurization and simulated gastrointestinal digestion, which are 97.03 %, 74.15 % and 70.07 %, respectively. This study offers a novel idea for the emulsion system used in probiotic delivery based on WPI-KGM.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"361 ","pages":"Article 123661"},"PeriodicalIF":10.7,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143882602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Arabinan-rich architectures in pectin Rhamnogalacturonan I domain unveiled by termite digestion: In situ structural insights from solid-state NMR 白蚁消化揭示了果胶中富含阿拉伯蛋白的鼠李糖半乳糖酸I结构域：固态核磁共振原位结构洞察

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2025-04-24 DOI: 10.1016/j.carbpol.2025.123662

Yi Xue , Hongjie Li , Xue Kang

{"title":"Arabinan-rich architectures in pectin Rhamnogalacturonan I domain unveiled by termite digestion: In situ structural insights from solid-state NMR","authors":"Yi Xue , Hongjie Li , Xue Kang","doi":"10.1016/j.carbpol.2025.123662","DOIUrl":"10.1016/j.carbpol.2025.123662","url":null,"abstract":"<div><div>Pectic polymers, ubiquitous in plant cell walls and widely used in industry, exhibit a wide range of functional properties. However, the sophisticated architecture of their higher-order structures in its native environment, particularly for Rhamnogalacturonan I (RG-I) domain, remains largely elusive. In this study, we innovatively combined solid-state nuclear magnetic resonance (ssNMR) and selective degradation of termites to investigate the molecular architecture of pectin within pine cell wall <em>in situ</em>. Quantitative analysis revealed prominent accumulation of arabinans, particularly those with more α-1,3-branching linkages. Using paramagnetic relaxation enhancement (PRE) ions as molecular probes, we uncovered a correlation between reduced water mobility in the local environment and the increased recalcitrance to degradation of these sugar units. Additionally, molecular dynamics characterization showed that these enriched sugar units experienced minimal changes during digestion. Collectively, our findings reveal a higher-order structural feature within the RG-I region—a compact, arabinan-rich architecture that is resistant to enzymatic degradation. Furthermore, this organization potentially functions as critical structural junctions, akin to the egg-box model, reinforcing the pectic network and maintain cell wall integrity.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"361 ","pages":"Article 123662"},"PeriodicalIF":10.7,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143882603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Chitosan/oxidized cellulose composite nanofiber sponges: a rapid and effective hemostasis strategy for non-compressible hemorrhage 壳聚糖/氧化纤维素复合纳米纤维海绵：一种快速有效的非压缩性出血止血策略

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2025-04-24 DOI: 10.1016/j.carbpol.2025.123655

Zhan Zhang , Zhiyuan Lin , Chenglong Yu , San Ieng Lei , Lu Wang , Fujun Wang , Jing Gao , Wenbo Meng

{"title":"Chitosan/oxidized cellulose composite nanofiber sponges: a rapid and effective hemostasis strategy for non-compressible hemorrhage","authors":"Zhan Zhang , Zhiyuan Lin , Chenglong Yu , San Ieng Lei , Lu Wang , Fujun Wang , Jing Gao , Wenbo Meng","doi":"10.1016/j.carbpol.2025.123655","DOIUrl":"10.1016/j.carbpol.2025.123655","url":null,"abstract":"<div><div>Non-compressible hemorrhagic wounds, prevalent in combat and mass trauma scenarios, are characterized by arterial injury-induced exsanguination and geometrically complex wound morphology that challenges conventional hemostatic interventions. This paper presents a novel nanofiber hemostatic sponge (CT@GP-HAc), made from 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO) oxidized cellulose nanofibers (TOCN) and chitosan nanofibers (CSNF), crosslinked with genipin (GP) in an acetic acid atmosphere. The sponge features excellent shape memory and rapid hemostatic capabilities, specifically designed for deep, irregular wounds. Its unique micro-nano composite porous structure enhances blood absorption, blood cell capture, and coagulation factor recruitment. In vitro experiments show that CT@GP-HAc outperforms traditional iRegene® GEL sponges in whole blood coagulation index, coagulation time, and red blood cell and platelet adhesion. Prothrombin time (PT), activated partial thromboplastin time (APTT) and thrombin time (TT) tests reveal that CT@GP-HAc's hemostatic action is independent of the human coagulation mechanism, making it suitable for patients with coagulation disorders. Biocompatibility tests indicate an extremely low hemolysis rate and non-cytotoxicity, supporting its clinical application. In vivo studies confirm CT@GP-HAc's effectiveness in reducing blood loss and shortening hemostasis time. These findings highlight the potential of CT@GP-HAc as a next-generation hemostatic material for managing non-compressible hemorrhagic wounds.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"361 ","pages":"Article 123655"},"PeriodicalIF":10.7,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143876671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High toughness, high stability and low hysteresis PVA /HPMC/PA/SBMA/ZnCl2 conductive hydrogels for wearable flexible electronics for multifunctional sensors and supercapacitors 高韧性、高稳定性、低迟滞PVA /HPMC/PA/SBMA/ZnCl2导电水凝胶，用于多功能传感器和超级电容器的可穿戴柔性电子产品

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2025-04-24 DOI: 10.1016/j.carbpol.2025.123644

Fan Wang , HuaQing Zhang , ChunLing Liu , Wen Bao , YaJuan Hu , Xieraili Maimaitiyiming

{"title":"High toughness, high stability and low hysteresis PVA /HPMC/PA/SBMA/ZnCl2 conductive hydrogels for wearable flexible electronics for multifunctional sensors and supercapacitors","authors":"Fan Wang , HuaQing Zhang , ChunLing Liu , Wen Bao , YaJuan Hu , Xieraili Maimaitiyiming","doi":"10.1016/j.carbpol.2025.123644","DOIUrl":"10.1016/j.carbpol.2025.123644","url":null,"abstract":"<div><div>PVA-based conductive hydrogels have enormous potential for applications in wearable flexible electronic devices, but their low ionic conductivity and mechanical strength hinder their practical utility. To address this challenge, we propose a PVA-based incorporating metal salt and zwitterion. We use PA(phytic acid) and HPMC (hydroxypropyl methylcellulose) - compatible properties to prepare PSBMA<sub>1</sub>-PMAZ<sub>1.5</sub> interpenetrating conductive hydrogel with good electrical signal responsiveness, repeatability, compression resistance, and low hysteresis (≤11.68 %). The hydrogel-based flexible strain sensor has a wide detection range, high sensitivity (GF = 1.1 at 0 − 600 %), stable electrical signal response to variations in temperature and humidity, and human movement detection capabilities. The detection range of hydrogel - based supercapacitors is 25 °C - 40 °C, which indicates that the device assembled with activated carbon as the electrode has good capacitance characteristics, and the multifunctional characteristics of PSBMA<sub>1</sub>-PMAZ<sub>1.5</sub> hydrogels are poised to serve as a demonstration for a new generation of flexible electronic products.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"361 ","pages":"Article 123644"},"PeriodicalIF":10.7,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143874919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Antibacterial and flame-retardant TEMPO-oxidized cellulose nanofibrils/chitosan-based sponge for efficient PM2.5 capture 抗菌阻燃tempo氧化纤维素纳米纤维/壳聚糖基海绵，高效捕获PM2.5

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2025-04-24 DOI: 10.1016/j.carbpol.2025.123642

Yifan Chen , Shite Lin , Weisheng Han , Youwen Chen , Qijun Zhang , La Hu , Wenbiao Zhang , Jingda Huang

{"title":"Antibacterial and flame-retardant TEMPO-oxidized cellulose nanofibrils/chitosan-based sponge for efficient PM2.5 capture","authors":"Yifan Chen , Shite Lin , Weisheng Han , Youwen Chen , Qijun Zhang , La Hu , Wenbiao Zhang , Jingda Huang","doi":"10.1016/j.carbpol.2025.123642","DOIUrl":"10.1016/j.carbpol.2025.123642","url":null,"abstract":"<div><div>PM2.5, which can carry many bacteria, poses a serious threat to health when inhaled. Therefore, developing porous materials with efficient filtration and antibacterial properties is essential for preventing the invasion of PM2.5 on respiratory health. In this study, we designed a multifunctional sponge filter through the synergistic integration of TEMPO-oxidized cellulose nanofibrils (TCNF), chitosan (CS), graphene oxide (GO), and lignin hybrid particles. A robust three-dimensional network was constructed via amide cross-linking between TCNF and CS, endowing the sponge with exceptional mechanical stability. GO enhances the PM2.5 interception efficiency through electrostatic adsorption. Additionally, we introduce lignin nanoparticles (LNP) as carriers for growing zinc oxide (ZnO), forming organic-inorganic hybrid particles (LNP@ZnO). This approach minimizes the negative impact of ZnO on the mechanical properties of the sponge while enhancing antibacterial performance. The resulting sponge filter demonstrates high PM2.5 filtration efficiency (99.14 %) with low pressure drop (38 Pa), excellent antibacterial properties against <em>E. coli</em> (92.63 %) and <em>S. aureus</em> (89.05 %), and outstanding flame-retardant properties (LOI value of 27.1 %). This study addresses the limitations of existing systems by minimizing the trade-off between antibacterial performance and mechanical strength, offering a novel approach for the design of advanced air filtration materials.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"361 ","pages":"Article 123642"},"PeriodicalIF":10.7,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143874918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A novel multifunctional self-assembled nanocellulose based scaffold for the healing of diabetic wounds 一种新型多功能自组装纳米纤维素支架用于糖尿病伤口愈合

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2025-04-24 DOI: 10.1016/j.carbpol.2025.123643

Guangrui Ma , Lina Fu , Hao Wang , Wenqi Yin , Pengyu He , Zhijun Shi , Guang Yang

{"title":"A novel multifunctional self-assembled nanocellulose based scaffold for the healing of diabetic wounds","authors":"Guangrui Ma , Lina Fu , Hao Wang , Wenqi Yin , Pengyu He , Zhijun Shi , Guang Yang","doi":"10.1016/j.carbpol.2025.123643","DOIUrl":"10.1016/j.carbpol.2025.123643","url":null,"abstract":"<div><div>The healing of chronic diabetic wounds remains a key challenge due to its susceptibility to bacterial infection, the inflammatory wound microenvironment, and difficulty in angiogenesis. Herein, we devised a smart scaffold of nanocellulose with silk fibroin-loaded cerium oxide nanoparticles for the treatment of diabetic wounds. The smart scaffold dressing displays excellent porosity, water absorption, air permeability, water retention, controlled degradability, and antioxidant properties. In vitro experiments demonstrated that the scaffold was capable of promoting the degradation of the scaffolds through uncross linking and exhibited antibacterial activity against both Gram-positive (<em>S. aureus</em>) and Gram-negative (<em>E. coli</em>) bacteria. Furthermore, in vivo experiments showed that smart scaffold dressing can reduces inflammation at the wound site of diabetic mice and promote collagen deposition, angiogenesis and re-epithelialization during wound healing in diabetic mice, exhibiting favorable biocompatibility and biodegradability. Its efficacy surpassed that of the current commercially available membrane dressings (3 M dressings) and medical PELNAC dressings (Class III medical device). These findings suggest that the smart scaffold dressing is a promising and innovative dressing for the treatment of diabetic wounds.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"361 ","pages":"Article 123643"},"PeriodicalIF":10.7,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143882699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0