Carbohydrate Polymers最新文献_第8页

Structure, function and catalytic mechanism of the carrageenan-sulfatases from the marine bacterium Zobellia galactanivorans DsijT

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2025-03-07 DOI: 10.1016/j.carbpol.2025.123487

Antonin Chevenier , Mathieu Fanuel , Ekaterina Sokolova , Diego Mico Latorre , Diane Jouanneau , Alexandra Jeudy , Aurélie Préchoux , Marie-Katherin Zühlke , Jürgen Bartel , Dörte Becher , Mirjam Czjzek , David Ropartz , Gurvan Michel , Elizabeth Ficko-Blean

{"title":"Structure, function and catalytic mechanism of the carrageenan-sulfatases from the marine bacterium Zobellia galactanivorans DsijT","authors":"Antonin Chevenier , Mathieu Fanuel , Ekaterina Sokolova , Diego Mico Latorre , Diane Jouanneau , Alexandra Jeudy , Aurélie Préchoux , Marie-Katherin Zühlke , Jürgen Bartel , Dörte Becher , Mirjam Czjzek , David Ropartz , Gurvan Michel , Elizabeth Ficko-Blean","doi":"10.1016/j.carbpol.2025.123487","DOIUrl":"10.1016/j.carbpol.2025.123487","url":null,"abstract":"<div><div>Carrageenans are highly diverse sulfated galactans found in red seaweeds. They play various physiological roles within macroalgae, but also serve as carbon sources for heterotrophic marine bacteria living at their surface. Carrageenan sulfatases catalyze the removal of sulfate esters from the glycans to expose the saccharide chain for further enzymatic processing. In the marine flavobacterium <em>Zobellia galactanivorans</em>, three carrageenan sulfatase genes are localized within a carrageenan utilization locus, belonging to three distinct SulfAtlas S1 (formylglycine-dependent sulfatases) subfamilies (S1_19, <em>Zg</em>CgsA; S1_7, <em>Zg</em>CgsB1; and S1_17, <em>Zg</em>CgsC). In this study we combined several techniques to characterize the detailed desulfurylation steps in the catabolic pathway of carrageenan in this model marine bacterium. High resolution UHPLC-MS/MS sequencing of the reaction species provides precise chemical localization of the enzymatic activities for the three carrageenan sulfatases on carrageenan polysaccharides and oligosaccharides. High resolution structures of the S1_19 endo-/exo-lytic carrageenan sulfatase (<em>Zg</em>CgsA) in complex with oligocarrageenan products show substrate plasticity which involve enzyme and glycan conformational rearrangements. A sulfo-enzyme covalent-intermediate sheds light on the catalytic mechanism and highlights the unique chemistry of formylglycine, an essential post-translationally modified catalytic residue in the active site of S1 family sulfatases.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"358 ","pages":"Article 123487"},"PeriodicalIF":10.7,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687296","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

Photodegradation of chitosan decorated by titanium dioxide: The potential to serve as a responded microcapsule shell

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2025-03-07 DOI: 10.1016/j.carbpol.2025.123482

Lina Xu , Xinglian Xu , Yujuan Xu , Mingyuan Huang

{"title":"Photodegradation of chitosan decorated by titanium dioxide: The potential to serve as a responded microcapsule shell","authors":"Lina Xu , Xinglian Xu , Yujuan Xu , Mingyuan Huang","doi":"10.1016/j.carbpol.2025.123482","DOIUrl":"10.1016/j.carbpol.2025.123482","url":null,"abstract":"<div><div>In order to develop the UV responded material, chitosan (CS) was decorated by TiO<sub>2</sub>, and the mechanism of UV-mediated photodegradation of CS-TiO<sub>2</sub> was analyzed. In this study, the changes in color, microstructure, degradation rate, thermal stability, and structure under different treatments were explored. The results showed that CS could be degraded by UV light. With the increase of irradiation time, the degradation rate of CS significantly raised, and was up to 18.41 %. L<sup>⁎</sup> value markedly decreased, a<sup>⁎</sup> value and b<sup>⁎</sup> value significantly increased. The photodegradation process fitted with first-order kinetics. The degradation was improved when reducing scale of TiO<sub>2</sub> from 10 nm to 102 nm, increasing TiO<sub>2</sub> addition, and increasing UV light power. UV irradiation would promote the breakage of β-1,4 glycosidic bonds and deacetylation of CS. After UV irradiation, the crystalline structure of CS was destroyed and thermal stability was reduced. Tea tree essential oil microcapsules were constructed by using CS-TiO<sub>2</sub> as a UV-light-sensitive shell material and could achieve a rapid UV-light-triggered release process, with a significant increase in volatile substances after UV irradiation. Thus, CS decorated by TiO<sub>2</sub> could function as a controlled-release shell for microcapsules, while UV light could act as a switch to modulate the release process.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"357 ","pages":"Article 123482"},"PeriodicalIF":10.7,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577121","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

P/N/S synergistic lignin nanoparticles enhance the excellent flame retardancy, flexibility, UV resistance, and full biodegradability holocellulose nanocomposite films

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2025-03-07 DOI: 10.1016/j.carbpol.2025.123483

Jierui Ye , Jiamin Wang , Jingyu Li , Yiwei Li , Pan Chen , Junfeng Wang , Yuebing Gao , Qingtian Xu , Qiang Wu , Qian Li

{"title":"P/N/S synergistic lignin nanoparticles enhance the excellent flame retardancy, flexibility, UV resistance, and full biodegradability holocellulose nanocomposite films","authors":"Jierui Ye , Jiamin Wang , Jingyu Li , Yiwei Li , Pan Chen , Junfeng Wang , Yuebing Gao , Qingtian Xu , Qiang Wu , Qian Li","doi":"10.1016/j.carbpol.2025.123483","DOIUrl":"10.1016/j.carbpol.2025.123483","url":null,"abstract":"<div><div>Bamboo holocellulose emerges as a significant candidate in the field of bio-based functional materials, owing to its rapid growth cycle, high strength, and antioxidant properties. However, its flammability poses a significant critical challenge, thereby hindering the widespread application of this carbonized polymer. In this study, we present a straightforward and efficient ternary deep eutectic solvent (TDES) pretreatment strategy. Specifically, the TDES treatment was employed to chemically introduce P/N/S groups into holocellulose and lignin, resulting in the production of flame-retardant holocellulose (HC-SP) and lignin (Lignin-SP), respectively. By adjusting the ratio of these two components, nanosuspensions and nanocomposite films were fabricated through a co-grinding process. The incorporation of Lignin-SP imparted the P/N/S-containing holocellulose nanofibril composite films with exceptional flame retardancy (with a limiting oxygen index exceeding 52.5 %), substantial tensile strength (reaching 152.3 MPa), robust UV-blocking capability (blocking over 98.9 % of UV radiation), and biodegradability (degrading within 70 days). This straightforward preparation strategy for all-biobased green flame-retardant packaging materials holds promising application potential in the fields of flame-retardant food packaging.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"357 ","pages":"Article 123483"},"PeriodicalIF":10.7,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143601775","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

UV-induced plasma welding and interface customization strategy of cellulose nanofiber/silver nanowire composite electrode for advanced flexible photoelectric applications

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2025-03-06 DOI: 10.1016/j.carbpol.2025.123479

Bingyang Liu , Pengfei Li , Jinsong Zeng , Jinpeng Li , Kefu Chen

{"title":"UV-induced plasma welding and interface customization strategy of cellulose nanofiber/silver nanowire composite electrode for advanced flexible photoelectric applications","authors":"Bingyang Liu , Pengfei Li , Jinsong Zeng , Jinpeng Li , Kefu Chen","doi":"10.1016/j.carbpol.2025.123479","DOIUrl":"10.1016/j.carbpol.2025.123479","url":null,"abstract":"<div><div>Significant advancements in flexible photoelectric devices have been achieved through extensive research on flexible transparent conductive electrodes (FTCEs) based on silver nanowires (AgNWs). However, two key challenges that need to be addressed are the high contact resistance of AgNWs and poor interface adhesion between AgNWs and the flexible substrate. In this study, we present a composite electrode comprising polydopamine-grafted cellulose nanofibers (PDA-TCNF) and AgNWs, fabricated through an interface customization strategy combined with UV-induced plasma welding. To enhance interfacial crosslinking, <em>N</em>, <em>N</em>-bis(acryloyl)cysteamine (BACA) was introduced as a surface adsorbate for AgNWs. The composite electrode exhibited rapid plasma welding of AgNWs under low-intensity UV irradiation. The optimized PDA-TCNF/AgNW-S/3 electrode demonstrated a sheet resistance of 7.26 Ω sq.<sup>−1</sup> with a remarkable light transmittance of 85.7 %. The interface customization strategy facilitated enhanced diffusion of silver atoms at AgNW junctions during UV-induced heating, thereby strengthening their welding capability. These electrodes serve as high-performance FTCEs for electroluminescent devices and transparent electric heaters. Our work proposes a simple method to fabricate superior FTCEs by integrating nanocellulose with AgNWs, offering a promising environmentally friendly material for flexible optoelectronic applications.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"357 ","pages":"Article 123479"},"PeriodicalIF":10.7,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143601867","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

Feruloylation of arabinoxylan enhances the protective effects on probiotic viability and stability in tablet formulations

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2025-03-04 DOI: 10.1016/j.carbpol.2025.123475

Huibin Zhang , Yaqin Hou , Zebang Hu , Guowen Zhang , Shunjing Luo , Chengmei Liu , Zhongxia Li , Tingting Chen

{"title":"Feruloylation of arabinoxylan enhances the protective effects on probiotic viability and stability in tablet formulations","authors":"Huibin Zhang , Yaqin Hou , Zebang Hu , Guowen Zhang , Shunjing Luo , Chengmei Liu , Zhongxia Li , Tingting Chen","doi":"10.1016/j.carbpol.2025.123475","DOIUrl":"10.1016/j.carbpol.2025.123475","url":null,"abstract":"<div><div>Maintaining probiotic viability during storage and gastrointestinal transit is crucial for supplement efficacy. This study was to investigate the protective effects of modified arabinoxylan (AX) by feruloylation in tablets. AX was feruloylated with various ferulic acid (FA) contents (0–106 mg/g) into high (H-FAX), medium (M-FAX), and low (L-FAX) FA content matrices. Tube inversion test revealed that increased FA content reduced the critical concentration for gel formation, with H-FAX showing gelation at 25 % w/v compared to 35 % w/v for L-FAX. The FAX matrices demonstrated superior protection of probiotic during tablet compression compared to conventional excipients, maintaining viability above 7.95 × 10<sup>9</sup> CFU/tablet. Higher FA content improved mechanical properties resulted in better probiotic survival rates in simulated gastric (pH 2.0) and intestinal (pH 7.2) conditions. Storage at 4 °C maintained probiotic viability above 4.67 × 10<sup>9</sup> CFU/tablet for 12 months. The FAX matrix's protective barrier slowed probiotic release and shielded cells from harsh gastrointestinal conditions, while bound ferulic acid's antioxidant effects enhanced survival, ensuring effective colon delivery. These findings demonstrate that FAX matrices' potential in probiotic tablet formulations, with FA content being critical for optimizing protection. This work provides new insights for developing improved probiotic delivery tablets using naturally derived polymers.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"357 ","pages":"Article 123475"},"PeriodicalIF":10.7,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143592405","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

Konjac glucomannan-based films and coatings for food packaging: Advances, applications, and future perspectives

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2025-03-04 DOI: 10.1016/j.carbpol.2025.123474

Si Shi , Hongyan Huang , Lihui Duan , Xianyang Xie , Jianxi Zhang , Junjie Tang , Wenhao Liu , Cailing Tong , Jie Pang , Chunhua Wu

{"title":"Konjac glucomannan-based films and coatings for food packaging: Advances, applications, and future perspectives","authors":"Si Shi , Hongyan Huang , Lihui Duan , Xianyang Xie , Jianxi Zhang , Junjie Tang , Wenhao Liu , Cailing Tong , Jie Pang , Chunhua Wu","doi":"10.1016/j.carbpol.2025.123474","DOIUrl":"10.1016/j.carbpol.2025.123474","url":null,"abstract":"<div><h3>Background</h3><div>Conventional petroleum-derived plastic food packaging poses risks to human health and environmental sustainability, while underperforming in preserving freshness and extending shelf life. This has spurred interest in biopolymers as sustainable alternatives. Konjac glucomannan (KGM), a natural biopolymer, stands out for its non-toxicity, film-forming ability, biodegradability, and biocompatibility, offering a sustainable solution to overcome conventional plastics' limitations.</div></div><div><h3>Scope and approach</h3><div>This review explores KGM's sources, production technologies, properties, and applications in food packaging. A literature search (2020–2025) using PubMed, Web of Science, and Scopus focused on peer-reviewed studies relevant to KGM-based films. Results show that KGM films enhance shelf life of perishable foods (e.g., fruits, vegetables, meats) by improving moisture retention, gas barriers, and antimicrobial activity.</div></div><div><h3>Conclusion</h3><div>Despite advantages, KGM films face challenges like mechanical strength limitations and humidity sensitivity. Strategies such as blending with biopolymers and incorporating nanoparticles improve performance. KGM-based packaging is emerging as an eco-friendly alternative to petroleum plastics, aligning with sustainability goals. Future research should optimize production processes and commercial scalability.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"357 ","pages":"Article 123474"},"PeriodicalIF":10.7,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610077","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

Engineering cellulosic paper into a bending strain sensor using chemical additives: Metal salt-based treatment and ethanol-assisted processing

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2025-03-04 DOI: 10.1016/j.carbpol.2025.123439

Jianmin Peng , Xin Fu , Xiaoyan Yu , Zhongfei Yuan , Xueren Qian , Yonghao Ni , Zhibin He , Jing Shen

{"title":"Engineering cellulosic paper into a bending strain sensor using chemical additives: Metal salt-based treatment and ethanol-assisted processing","authors":"Jianmin Peng , Xin Fu , Xiaoyan Yu , Zhongfei Yuan , Xueren Qian , Yonghao Ni , Zhibin He , Jing Shen","doi":"10.1016/j.carbpol.2025.123439","DOIUrl":"10.1016/j.carbpol.2025.123439","url":null,"abstract":"<div><div>The pulp and paper industry, traditionally focused on basic material production, is now expanding into innovative areas, such as advanced functional materials. Papermaking wet-end chemistry & chemical additives is a specialized field that integrates process control in wet-end paper production with the versatile use of chemical additives, which can be tailored for both wet-end and non-wet-end applications. By combining the optimization of wet-end processes with the adaptability of chemical additives—designed specifically for papermaking or adapted from other industries—this field offers immense potential for bridging traditional papermaking with emerging technologies. This study introduces a cellulosic paper-based bending strain sensor enabled by two simple chemical additives: metal salt and ethanol. The sensor is fabricated through a treatment process that engineers the fiber network, enhancing its conductive properties. By transforming the paper's porous structure into a denser network, efficient conductive pathways are established. The resulting material demonstrates features like bending strain detection, isotropic sensitivity, low hysteresis, and high-frequency responsiveness. Additionally, it can sense temperature changes between 20–60 °C and remains functional at subzero temperatures. Encapsulation with polyimide further improves its waterproof and environmental stability. The metal salt–ethanol approach offers a scalable, sustainable, and cost-effective method for producing cellulosic sensors and wearable devices, providing a robust foundation for the practical adoption of innovative sensing technologies.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"358 ","pages":"Article 123439"},"PeriodicalIF":10.7,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747419","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-metal and metal oxide nanocomposites for active and intelligent food packaging; a comprehensive review of emerging trends and associated challenges

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2025-03-03 DOI: 10.1016/j.carbpol.2025.123459

Sudisha Jogaiah , Ayse Gunyakti Mujtaba , Muhammad Mujtaba , Archana , Savitha De Britto , Nagaraja Geetha , Seema A. Belorkar , Hunthrike Shekar Shetty

{"title":"Chitosan-metal and metal oxide nanocomposites for active and intelligent food packaging; a comprehensive review of emerging trends and associated challenges","authors":"Sudisha Jogaiah , Ayse Gunyakti Mujtaba , Muhammad Mujtaba , Archana , Savitha De Britto , Nagaraja Geetha , Seema A. Belorkar , Hunthrike Shekar Shetty","doi":"10.1016/j.carbpol.2025.123459","DOIUrl":"10.1016/j.carbpol.2025.123459","url":null,"abstract":"<div><div>In recent years, significant advancements in biopolymer-based packaging have emerged as a response to the environmental challenges posed by traditional petroleum-based materials. The drive for sustainable, renewable, and degradable alternatives to fossil-based components in the packaging industry has led to an increased focus on chitosan, the second most abundant biopolymer after cellulose. Chitosan offers intrinsic properties such as biodegradability, biocompatibility, antimicrobial activity, excellent barrier and film-forming capabilities, positioning it as an ideal candidate for food packaging applications. However, limitations including inferior mechanical, thermal, barrier properties, and brittleness compared to conventional plastics have limiting its widespread adoption in the food packaging industry. Chitosan has been extensively utilized in various forms, particularly as nanocomposites incorporating metal nanoparticles, leading to chitosan-based nanocomposite films/coatings that synergistically combine the advantageous properties of both chitosan and metal nanoparticles. Through an in-depth analysis of the current research (primarily the last 5 years), this review delves into the physicochemical, mechanical, sensing, and antimicrobial properties of chitosan nanocomposite as an innovative food packaging material. This review will provide insights into the potential toxicity and environmental impact of nanoparticle migration, as well as the prospects and challenges associated with chitosan-metal/metal oxide nanocomposite films in the development of sustainable packaging solutions.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"357 ","pages":"Article 123459"},"PeriodicalIF":10.7,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143562802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Surfactant-modified microfibrillated cellulose reinforcement of high-barrier sustainable packaging films

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2025-03-03 DOI: 10.1016/j.carbpol.2025.123471

Kazi Md Yasin Arafat , Khandoker Samaher Salem , Sharmita Bera , Hasan Jameel , Lucian Lucia , Lokendra Pal

{"title":"Surfactant-modified microfibrillated cellulose reinforcement of high-barrier sustainable packaging films","authors":"Kazi Md Yasin Arafat , Khandoker Samaher Salem , Sharmita Bera , Hasan Jameel , Lucian Lucia , Lokendra Pal","doi":"10.1016/j.carbpol.2025.123471","DOIUrl":"10.1016/j.carbpol.2025.123471","url":null,"abstract":"<div><div>Surfactant-modified microfibrillated cellulose (S-MFC) enhanced the barrier properties of biobased packaging films for food applications. MFC of varying dimensions was mechanically produced from hardwood cellulosic fibers by applying different cumulative energy levels. The MFC was then modified employing a cationic surfactant, viz., cetyltrimethylammonium bromide (CTAB), and a non-ionic surfactant (NS), alcohol ethoxylate, followed by solution casting to develop packaging films. The MFC and S-MFC were characterized by using scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and time-of-flight secondary ion mass spectrometry (ToF-SIMS). The packaging films were evaluated for barrier and mechanical properties, including air permeability, water vapor transmission rate (WVTR), oil and grease resistance, hot oil resistance, water contact angle and surface energy, tensile, and stretch properties. The incorporation of hydrophobic long alkyl chains from the surfactant onto the surface of the MFC through electrostatic and hydrophobic interactions contributed to improved barrier properties of the films. The S-MFC-based films demonstrated a 38 % reduction in WVTR, zero air permeability, the highest oil and grease resistance (kit level 12), and passed the hot oil absorption (<4 %), with increasing fibrillation levels and surfactant modifications. S-MFC films showed the highest contact angle of ~81° and the lowest surface energy (37.2 mN/m).</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"357 ","pages":"Article 123471"},"PeriodicalIF":10.7,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Straightforward association of phosphate with giant reed fibers for rapid and efficient water decontamination

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2025-03-03 DOI: 10.1016/j.carbpol.2025.123470

Aimée Mutuyimana , Soumia Boukind , El-Houssaine Ablouh , Omar Cherkaoui , Houssine Khalili , Aleksander Jaworski , Mounir El Achaby , Zineb Kassab , Houssine Sehaqui

{"title":"Straightforward association of phosphate with giant reed fibers for rapid and efficient water decontamination","authors":"Aimée Mutuyimana , Soumia Boukind , El-Houssaine Ablouh , Omar Cherkaoui , Houssine Khalili , Aleksander Jaworski , Mounir El Achaby , Zineb Kassab , Houssine Sehaqui","doi":"10.1016/j.carbpol.2025.123470","DOIUrl":"10.1016/j.carbpol.2025.123470","url":null,"abstract":"<div><div>Lignocellulosics present attractive properties for sustainable water decontamination. Yet, they lack strong interactive functional groups, making their performance low compared to established adsorbents. Previous works generally focused on exhaustive chemical routes aiming at cellulose isolation from lignocellulosics and its functionalization to enhance its adsorption characteristics. Here, we show that the direct functionalization of Giant Reed (<em>Arundo donax</em> L) in benign Diammonium phosphate/urea system affords highly phosphorylated fibers at a high yield. The samples were characterized using SEM, XRD, FTIR, <sup>13</sup>C and <sup>31</sup>P NMR spectroscopies, conductometric titration, and Zeta-potential measurements to comprehend their morphology, chemistry, and surface properties. The chemical functionalization of Giant Reed (GR) leads to a significant amount of phosphates attached to the fibers, resulting in a charge content of 4.45 mmol·g<sup>−1</sup> and a negative surface charge in a wide pH range. Consequently, the adsorption performance of GR increased more than sixtyfold after phosphorylation, reaching adsorption capacities of 365 mg·g<sup>−1</sup> for copper ions and 606–1145 mg·g<sup>−1</sup> for dyes. Isotherm and kinetic adsorption models identified the mechanisms governing the adsorption process. This study reveals the prospects of a single-step benign chemical functionalization of a fast growing lignocellulosic resource (GR) that yields highly phosphorylated fibers for the removal of wastewater impurities.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"357 ","pages":"Article 123470"},"PeriodicalIF":10.7,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143621022","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