Cellulose最新文献

{"title":"In-situ X-ray analysis of cold alkali dissolution of cellulose pulps of various origin","authors":"Joanna Wojtasz,&nbsp;Jenny Bengtsson,&nbsp;Hanna Ulmefors,&nbsp;Diana Bernin,&nbsp;Åsa Östlund,&nbsp;Shun Yu","doi":"10.1007/s10570-024-06235-7","DOIUrl":"10.1007/s10570-024-06235-7","url":null,"abstract":"<div><p>This article elucidates the dissolution of cellulose from different raw materials in NaOH aqueous solution via the combination of synchrotron-radiation-based SAXS/WAXS characterization. The X-ray measurements probed the mesostructure of the cellulose samples during the freeze-thawing cycle allowing tracking the initial swelling of the structure, the kinetics of disintegration of the cellulose crystallites as well as controlling the final state of the cellulose solution, i.e. presence or absence of cellulose aggregates. The individual SAXS and WAXS measurements were fitted and modelled to enable visualisation and tracking of the changes in the structure in relation to temperature during cooling and warming phases. To further increase the understanding of the parameters affecting dissolution different cellulose samples and solution compositions were considered. For this purpose the effect of increasing the concentration of NaOH and adding Zn²⁺ has been carefully investigated as well as the importance of the cellulose origin. We found consistent development that the dissolution occurs faster at higher concentrations of NaOH and with Zn²⁺ regardless the origin. Nevertheless, SAXS data show that materials with a larger amount of cellulose I show more apparent swelling in mesoscopic structure than bleached agricultural containing cellulose II. Despite few crystalline residues after the complete cooling-heating cycle shown by WAXS, some cellulose was not completely dissolved as some network structure remained in the samples under the test condition as suggested by SAXS.</p></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 1","pages":"115 - 131"},"PeriodicalIF":4.9,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10570-024-06235-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Testing the ecotoxicity of nanofibrillated kraft-bleached pulp for use in nanotechnology products","authors":"Ketelen Michele Guilherme de Oliveira,&nbsp;Endrew Henrique de Sousa Carvalho,&nbsp;Breno da Silva Pereira,&nbsp;Egon Petersohn Jr.,&nbsp;Washington Luiz Esteves Magalhães,&nbsp;Rayssa Barbary Pedroza Moura,&nbsp;Stephânia Fleury Taveira,&nbsp;Pedro Henrique Gonzalez de Cademartori,&nbsp;Joslaine Jacumazo,&nbsp;Rilton Alves de Freitas,&nbsp;Gisele Augusto Rodrigues de Oliveira,&nbsp;Daniela Morais Leme","doi":"10.1007/s10570-024-06258-0","DOIUrl":"10.1007/s10570-024-06258-0","url":null,"abstract":"<div><p>Cellulose nanofibers (CNFs) are nanomaterials with several potential applications in nanotechnology-based products, and their renewable origin and biodegradability property have attracted attention in sustainable product development; however, their environmental impacts still need to be fully understood as other nanoparticles. In this study, CNFs obtained from bleached cellulose pulp of <i>Eucalyptus</i> sp were evaluated regarding their potential to affect terrestrial and aquatic ecosystems. Thus, an ecotoxicity testing battery composed of phytotoxicity test, plant genotoxicity assay, earthworm acute toxicity test, algal chronic toxicity test, and <i>Daphnia magna</i> acute immobilization test was considered herein. Also, mean diameter and zeta potential were investigated in CNF exposure media to evaluate its aggregation behavior. CNFs did not present acute toxicity to aquatic organisms (algae and microcrustaceans) and did not cause lethal effects on earthworms. The results from plant test systems showed that CNFs did not inhibit seed germination or root development or cause cellular and genetic changes in plant cells. This later result does not agree with the scientific literature, which reported genotoxicity for other types of nanocellulose, which suggests that chemical identity and physicochemical properties can influence the toxicity of nanocelluloses. Thus, CNF kraft-bleached pulp is not toxic to key organisms of both aquatic and terrestrial ecosystems. Probably, larger aggregates precipitated in the aquatic toxicity tests, preventing the interaction of nanoparticles with the living organisms. Therefore, the findings presented here open a good perspective of applications of CNF kraft-bleached pulp on nanotechnology-based products as potential environmentally safe nanomaterial.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 1","pages":"519 - 534"},"PeriodicalIF":4.9,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Insights into the critical role of anions in nanofibrillation of cellulose in deep eutectic solvents","authors":"Qing Zhang,&nbsp;Ziliang Dai,&nbsp;Lili Zhang,&nbsp;Zhiguo Wang","doi":"10.1007/s10570-024-06297-7","DOIUrl":"10.1007/s10570-024-06297-7","url":null,"abstract":"<div><p>Complex interactions between cellulose molecules and small molecules of deep eutectic solvents (DESs) can lead to dramatic changes in the structure of the hydrogen bond network in cellulose. However, the molecular and ionic evolution mechanism of DESs on cellulose nanofibrillation is still unclear. In this study, the mechanism and the critical role of ions in DESs on cellulose nanofibrillation were investigated. The results showed that cellulose nanofibers (CNFs) with a diameter of less than 200 nm could be prepared directly using DES consisting of lactic acid (LA) and chloride, e.g., LA/ammonium chloride (NH₄Cl) or LA/dodecyltrimethylammonium chloride (DTAC). Using LA/Zinc chloride (ZnCl₂), CNFs with a diameter of less than 100 nm can be prepared. The Kamlet-Abboud-Taft parameters (KAT value) showed that DESs containing LA had higher hydrogen bond acidity (<i>α</i>) than other systems (such as ethylene glycol and urea) without LA, which provided more active protons to improve the proton mobility in the cellulose nanofibrillation. Also, DESs composed of LA and Cl⁻ had high hydrogen bond alkalinity (<i>β</i>), which led to great changes in the original hydrogen bond network of cellulose and the formation of a new hydrogen bond structure, thereby easing the dissolution of the cellulose. Thus, the cellulose hydroxy groups could be esterified by the LA under high-temperature moistening conditions, and the CNFs prepared by the DES system containing LA and Cl⁻ had the highest degree of substitution (DS) (up to 0.73 in LA/ZnCl₂ system) after high-temperature moistening.</p></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 1","pages":"97 - 114"},"PeriodicalIF":4.9,"publicationDate":"2024-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of tailored polysaccharide gels through selective Diels–Alder crosslinking","authors":"Zakaria Atmani,&nbsp;Thomas Heinze,&nbsp;Martin Gericke","doi":"10.1007/s10570-024-06300-1","DOIUrl":"10.1007/s10570-024-06300-1","url":null,"abstract":"<div><p>Novel polysaccharide gels were prepared by a covalent crosslinking of xylan and cellulose derivatives through Diels–Alder (DA) cycloaddition. For this purpose, polysaccharide carbamates were synthesized through a modular approach that incorporated either furfuryl or maleimide moieties for DA reaction as well as solubilizing tertiary amino or quaternary ammonium moieties that facilitated water solubility. All compounds were fully characterized with respect to degrees of substitution (DS) and molecular structures. Organogels and hydrogels were prepared by selective covalent crosslinking of the derivatives through DA reaction. The gelation process was monitored by rheological measurements to evaluate the kinetics with respect to different crosslinking conditions and the gels were characterized with respect to mechanical properties as well as drying and reswelling behavior. Moreover, several side reactions that occurred during the gelation were identified and it was possible to adjust the molecular structure accordingly to avoid these issues. Thus, it was possible to obtain novel polysaccharide-based organogels and hydrogels that displayed thermoreversible behavior, as well as good mechanical stability and re-swelling capacities.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 1","pages":"187 - 209"},"PeriodicalIF":4.9,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10570-024-06300-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation and characterization of cellulose from wheat straw using formic/acetic acid pulping and Cu-activated hydrogen peroxide bleaching","authors":"Ommolbanin Rashidi,&nbsp;Ali Abdulkhani,&nbsp;Sahab Hejazi,&nbsp;Alireza Ashori,&nbsp;Jaber Hosseinzadeh,&nbsp;Fubao Sun","doi":"10.1007/s10570-024-06303-y","DOIUrl":"10.1007/s10570-024-06303-y","url":null,"abstract":"<div><p>The increasing demand for sustainable alternatives to fossil-based products has prompted research into the valorization of agricultural residues. This study investigated the production of high-quality dissolving pulp from wheat straw using an organosolv process. The primary objectives were to evaluate the feasibility of using organic acids for pulping, optimize the process conditions, and assess the quality of the resulting dissolving pulp. Wheat straw was treated using mixtures of formic acid (FA) and acetic acid (AA) at various ratios (35:65 and 65:35 FA:AA), employing both steaming and immersion methods. The pulp underwent alkaline extraction, followed by a two-stage bleaching process consisting of chlorine dioxide (ClO₂) treatment and catalytic hydrogen peroxide (H₂O₂) bleaching with CuSO₄ as an activator. The resulting alpha-cellulose samples were characterized using various analytical techniques, including viscosity measurement, FTIR spectroscopy, X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). The results demonstrated that high-quality dissolving pulp could be successfully produced from wheat straw using the organosolv process. The highest alpha-cellulose content (92%) and yield (58.16%) were achieved using a formic acid to acetic acid ratio of 35:65 v/v. The steaming method generally produced pulp with superior properties compared to the immersion method. FTIR and XRD analyses confirmed the high purity of the obtained dissolving pulp, while FESEM revealed well-defined, individual cellulose fibers with a high degree of defibrillation. Thermal analysis showed good thermal stability of the produced dissolving pulp. This study highlights the potential of wheat straw as a viable raw material for producing high-quality dissolving pulp using an organosolv process.</p></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 1","pages":"165 - 185"},"PeriodicalIF":4.9,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clean preparation of Ag@Au nanoparticle-modified cotton fabric with durable antimicrobial properties by adsorption","authors":"Tiantian Cao,&nbsp;Yan Zhou,&nbsp;Jun Zhang,&nbsp;Bing Zhao","doi":"10.1007/s10570-024-06299-5","DOIUrl":"10.1007/s10570-024-06299-5","url":null,"abstract":"<div><p>The recurrent occurrence of public health crises has significantly accelerated the development of nano-metal-based antimicrobial textiles. However, several challenges remain, including poor solution stability, low affinity and binding fastness to textiles, and the difficulty of recovering nanometal-containing wastewater in the antimicrobial treatment of fabrics. This can damage the natural microbial ecological balance and reduce the performance of the fabrics. Herein, we synthesized an amino-terminated hyperbranched poly(amidoamine) -capped core–shell structured silver /gold nanoparticles (HBPAA-capped Ag@AuNPs), which exhibited high hot water resistance, high solution stability, and strong affinity to natural textiles. These properties were dependent on the reducible cationic HBPAA. The as-prepared Ag@AuNPs exhibited a positive surface charge of + 48.06 mV and demonstrated the capacity to withstand 100 °C heating in water due to their inherent self-reducing ability. Accordingly, we devised a novel bottom-up coating strategy for cotton fabric, whereby Ag@AuNPs were adsorbed onto the cotton surface with HBPAA serving as a “molecular motor” driven by intermolecular interactions between cationic HBPAA and anionic cotton. The results demonstrated that up to 60 mg/L of Ag@AuNPs were nearly completely adsorbed by cotton, indicating that up to ~ 3 g/kg of Ag@AuNP-coated fabric could be prepared by the cleaning adsorption method. The antimicrobial cotton fabric exhibited active adsorption ability toward bacteria and demonstrated strong organic–inorganic coupling antibacterial properties (cationic HBPAA contributed approximately 30– 60% of the antibacterial activity). Even after 50 standard washes, cotton fabric with Ag@Au content as low as 0.9 g/kg was still capable of killing ~ 100% of <i>E. coli</i> and <i>S. aureus</i>.</p></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 1","pages":"613 - 628"},"PeriodicalIF":4.9,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Agro-waste of Senna alata (L.) Roxb. stem: a sustainable biofiber material for lightweight composites and diverse applications","authors":"Raja Somasundaram,&nbsp;Rimal Isaac,&nbsp;Divya Divakaran,&nbsp;Indran Suyambulingam,&nbsp;Suchart Siengchin,&nbsp;Murugan Manavalan","doi":"10.1007/s10570-024-06285-x","DOIUrl":"10.1007/s10570-024-06285-x","url":null,"abstract":"<div><p>Natural lignocellulosic fibers possess distinct capacities and properties from various perspectives. To utilize natural fibers most effectively, particularly in high-quality applications, it is essential to have a solid understanding of their fundamental qualities. This study isolates ultrastrong fibers from the vascular tissues of the <i>Senna alata</i> (L.) Roxb. (candle bush) plant stem. The α-cellulose, lignin, and hemicellulose contents of the fibers were measured to be 72.14%, 12.28%, and 10.47%, respectively, which fell within a favorable range for creating ropes, sacs, yarns, and textile fabrics. To evaluate their potential qualities against commercially available fibers, <i>S. alata</i> was tested for tensile strength, tensile modulus, and elongation at break. The findings revealed tensile strength, breaking elongation, and E-modulus values of 625.22 ± 81.12 MPa, 3.86 ± 1.7%, and 67.77 ± 0.33 GPa, which were comparable to those of commercially available natural fibers, making them suitable for applications in door panels, furniture, and structural components. The fibers also exhibited lower mass losses (5% at 270 °C), making them appropriate for biocompatible materials with excellent heat stability, including insulation, packaging, circuit boards, dielectric substrates, and switches. Additionally, the antimicrobial properties of the fibers were evaluated and found suitable for use in the textile, pharmaceutical, and wound dressing sectors. The results illustrate that this unique fiber is an ecologically benign and sustainable raw material due to its superior value addition and the versatility it offers in manufacturing.</p></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 1","pages":"383 - 412"},"PeriodicalIF":4.9,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction: ZnO-incorporated chitin hydrogels for infected wound therapy","authors":"Hongli Zhang,&nbsp;Mengqing Xu,&nbsp;Liang Wang,&nbsp;Haihua Luo,&nbsp;Shuangquan Wu,&nbsp;Tian Gao,&nbsp;Qiong Wu,&nbsp;Huan Xu","doi":"10.1007/s10570-024-06252-6","DOIUrl":"10.1007/s10570-024-06252-6","url":null,"abstract":"","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 1","pages":"689 - 689"},"PeriodicalIF":4.9,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Negative effect and removal of trace amounts of 1,3-dialkylimidazolium ionic liquids in samples from biorefineries","authors":"Anna F. Lehrhofer,&nbsp;Yuko Yoneda,&nbsp;Thi Hoai Tran,&nbsp;Ivan Melikhov,&nbsp;Lars Gille,&nbsp;Hubert Hettegger,&nbsp;Stefan Böhmdorfer,&nbsp;Antje Potthast,&nbsp;Herwig Schottenberger,&nbsp;Thomas Rosenau","doi":"10.1007/s10570-024-06249-1","DOIUrl":"10.1007/s10570-024-06249-1","url":null,"abstract":"<div><p>Ionic liquids (ILs), based on 1,3-dialkylimidazolium cations, are frequently used solvent components or auxiliaries for various types of biomass in biorefinery approaches. Unless washing and sample preparation have been carried out very carefully, analytical samples often contain residual traces of such ionic liquids. These residues can compromise the quality of physicochemical analyses, as was demonstrated for monosaccharide analysis after hydrolysis by gas chromatography, high-performance thin-layer chromatography, or ion chromatography (IC), and even damage analytical equipment, such as gas chromatographic capillaries or IC electrodes. We suggest a simple procedure—short stirring with solid elemental sulfur adsorbed on alumina as the scavenger—as a pretreatment of the analytical samples to remove interfering imidazolium IL traces. The chemistry underlying this pretreatment is the conversion of the 1,3-dialkylimidazolium cation to the corresponding, water-insoluble, neutral, volatile 1,3-dialkylimidazole-2-thiones. Given the negative effect of imidazolium IL impurities, the minor extension of the sample preparation by one short additional step appears to be a small price to pay for an unperturbed and instrument-safe analysis.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 1","pages":"147 - 163"},"PeriodicalIF":4.9,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10570-024-06249-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction to: Dyeing performance and antimicrobial activity of cellulose-based biomaterials","authors":"Farhana Momotaz,&nbsp;Md. Reazuddin Repon,&nbsp;Urnisha Saha Prapti,&nbsp;Arnob Dhar Pranta,&nbsp;Md. Rashedul Hasan","doi":"10.1007/s10570-024-06292-y","DOIUrl":"10.1007/s10570-024-06292-y","url":null,"abstract":"","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 1","pages":"275 - 275"},"PeriodicalIF":4.9,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}