Cellulose最新文献

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Regenerated cellulose as a sustainable alternative to glass fiber composites: effects of fabric structure and applied pressure during curing 再生纤维素作为玻璃纤维复合材料的可持续替代品:织物结构和固化过程中施加压力的影响
IF 4.9 2区 工程技术
Cellulose Pub Date : 2025-04-03 DOI: 10.1007/s10570-025-06498-8
Muhammad Sohaib Anas, Bernhard Ungerer, Hajir Al-musawi, Ulrich Müller
{"title":"Regenerated cellulose as a sustainable alternative to glass fiber composites: effects of fabric structure and applied pressure during curing","authors":"Muhammad Sohaib Anas,&nbsp;Bernhard Ungerer,&nbsp;Hajir Al-musawi,&nbsp;Ulrich Müller","doi":"10.1007/s10570-025-06498-8","DOIUrl":"10.1007/s10570-025-06498-8","url":null,"abstract":"<div><p>Fiber-reinforced composite materials have transformed multiple industries because of their outstanding mechanical properties and lightweight characteristics. Glass fiber composites are commonly used in structural applications due to their high strength-to-weight ratio. Researchers are investigating alternative fibers due to concerns about environmental sustainability and manufacturing costs. This study investigates the mechanical properties of composites reinforced with high-strength regenerated cellulose (viscose) tape fabrics, aiming to assess their suitability as alternatives to traditional materials like glass fabric. Three different weave patterns, plain 1/1, twill 2/2, and satin 5/1 were used as reinforcements along with a glass fabric satin 7/1 for comparison. The composites were fabricated using a hand lay-up technique and cured at different levels of pressure. Mechanical testing was conducted to evaluate tensile strength, modulus of elasticity, and work of fracture. The crimp ratio (%) was calculated for each composite type based on microscopy scans of the specimen’s cross-section. Satin weave viscose composites achieve up to 30–35% of the glass fabric composites in case of Modulus and tensile strength. The highest modulus of elasticity recorded for satin weave viscose composites is 10.8 GPa, compared to 29.8 GPa for glass fabric composites. Tensile strength of satin weave viscose composites reaches up to 180 MPa, while glass fabric composites achieve up to 430 MPa. Microscopic examinations demonstrate that as pressure increases, the crimp ratio decreases, and this change in crimp ratio directly impacts stiffness properties. However, the viscose fiber composites tested were inferior to glass fiber composites in terms of stiffness but surpass 40–60% in terms of work of fracture. The potential for improving the mechanical properties can be found in changing the mechanical properties of the viscose and in adapted weave patterns.</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 6","pages":"4039 - 4056"},"PeriodicalIF":4.9,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10570-025-06498-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908589","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}
引用次数: 0
Multifunctional conducting cellulose acetate–graphene oxide–La nanomembrane for waste water treatment and energy production 用于废水处理和能源生产的多功能导电醋酸纤维素-氧化石墨烯- la纳米膜
IF 4.9 2区 工程技术
Cellulose Pub Date : 2025-04-03 DOI: 10.1007/s10570-025-06501-2
Minakshi Pandey, Aayasha Negi, Mohamed Taha Yassin, Fatimah O. Al-Otibi, Khalid Maniah, Ramchander Merugu
{"title":"Multifunctional conducting cellulose acetate–graphene oxide–La nanomembrane for waste water treatment and energy production","authors":"Minakshi Pandey,&nbsp;Aayasha Negi,&nbsp;Mohamed Taha Yassin,&nbsp;Fatimah O. Al-Otibi,&nbsp;Khalid Maniah,&nbsp;Ramchander Merugu","doi":"10.1007/s10570-025-06501-2","DOIUrl":"10.1007/s10570-025-06501-2","url":null,"abstract":"<div><p>The treatment of dye wastewater is crucial due to the potential toxicity of dyes and their detectability even at very low concentrations. Membrane technology offers a promising avenue for dye removal, but challenges such as membrane fouling and trade-off effects limit its efficiency. To address this, we synthesized and characterized a novel conductive membrane composed of cellulose acetate (CA)–graphene oxide (GO)–lanthanum (La) for effective dye wastewater treatment. The membrane was characterized using X-ray diffraction, X-ray photoelectron spectroscopy, Thermogravimetric analysis, Brunauer–Emmett–Teller surface area analysis and energy-dispersive X-ray spectroscopy. Subsequently, it was employed in a dead-end filtration cell setup as the cathode in an electrochemical treatment system. Additionally, the membrane displayed antibacterial properties and showed resistance to fouling by dye molecules, enhancing its suitability for long-term wastewater treatment applications. The nanocomposite (NC), with a crystallite size of 25.0 nm, demonstrated remarkable thermal stability, retaining 28.35% char residue at 800 °C. In wastewater treatment applications, the membrane achieved a methylene blue dye rejection rate of 95.23 ± 1.05% under 35 V, with a flux of 35.45 Lm<sup>−2</sup> h<sup>−1</sup> bar<sup>−1</sup>. Antibacterial tests showed significant inhibition of <i>S. aureus</i>, enhancing the microbiological safety of treated water. Photocatalytic experiments revealed a hydrogen evolution rate of 2825.67 Lmol<sup>−1</sup> g<sup>−1</sup> h<sup>−1</sup> and a total yield of 6100 ± 50 L mol<sup>−1</sup> g<sup>−1</sup>. This study not only presents a novel approach for dye wastewater treatment using a membrane but also contributes to the understanding of membrane-solute interactions through comprehensive characterization techniques. The synergy of CA, GO and La in the membrane matrix provides a multifunctional platform for efficient and sustainable wastewater treatment. These results underscore the CA–GO–La membrane's potential for sustainable environmental remediation and energy production, positioning it as a versatile solution to contemporary challenges.</p></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 7","pages":"4271 - 4285"},"PeriodicalIF":4.9,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144125551","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}
引用次数: 0
Efficient extraction of lignin-rich nanofibers from rambutan peel using a two-step delignification process 两步法提取红毛丹果皮中富含木质素的纳米纤维
IF 4.9 2区 工程技术
Cellulose Pub Date : 2025-04-02 DOI: 10.1007/s10570-025-06491-1
Selorm Torgbo, Prakit Sukyai, Udomlak Sukatta, Marco Beaumont, Thomas Rosenau
{"title":"Efficient extraction of lignin-rich nanofibers from rambutan peel using a two-step delignification process","authors":"Selorm Torgbo,&nbsp;Prakit Sukyai,&nbsp;Udomlak Sukatta,&nbsp;Marco Beaumont,&nbsp;Thomas Rosenau","doi":"10.1007/s10570-025-06491-1","DOIUrl":"10.1007/s10570-025-06491-1","url":null,"abstract":"<div><p>Fibrillated cellulose obtained from waste streams is highly valued because it converts a residual byproduct into a high-performance, and sustainable material. However, its use is often limited by preparation methods that are both complicated and time-consuming. In this study, we introduce a straightforward approach for production of lignin-containing carbohydrate nanofibers (LCNFs) through a two-step partial delignification process. Our approach is based on a peracetic acid (PAA) treatment followed by an alkaline sodium hydroxide (NaOH, 2 wt% and 5 wt%) step. We examined the produced LCNFs with regard to chemical composition, zeta potential, morphology, colloidal stability, thermal stability, and particle size. Rambutan peel served as the biomass source, yielding LCNFs with lignin contents between 14 and 22 wt% and cellulose contents of 50–73 wt%, at an overall yield exceeding 43 wt%. High-pressure homogenization of the fibers treated with the two-step partial delignification produced LCNFs with an average diameter of less than 9.8 nm. The colloidal stability of the LCNFs was studied after six months of storage at 4 °C, demonstrating stable suspensions and unchanged chemical composition. Thermal analysis revealed significant improvements in thermal stability for the NaOH-treated LCNFs, with onset temperature (T<sub>onset</sub>), of 287 °C (PAA-2N) and 305 °C (PAA-5N), and T<sub>max</sub> at 340 °C and 343 °C, respectively. This eco-friendly process for producing LCNFs offers a scalable pathway for developing high-performance nanofibers with broad industrial application.</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 6","pages":"3685 - 3700"},"PeriodicalIF":4.9,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908582","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}
引用次数: 0
Nano-scale porosity of water-swollen wood cell walls: analysis of solute exclusion data from a new perspective 水膨胀木材细胞壁的纳米孔隙度:从新角度分析溶质排斥数据
IF 4.9 2区 工程技术
Cellulose Pub Date : 2025-04-02 DOI: 10.1007/s10570-025-06494-y
Ramūnas Digaitis, Greeley Beck, Sune Tjalfe Thomsen, Maria Fredriksson, Emil Engelund Thybring
{"title":"Nano-scale porosity of water-swollen wood cell walls: analysis of solute exclusion data from a new perspective","authors":"Ramūnas Digaitis,&nbsp;Greeley Beck,&nbsp;Sune Tjalfe Thomsen,&nbsp;Maria Fredriksson,&nbsp;Emil Engelund Thybring","doi":"10.1007/s10570-025-06494-y","DOIUrl":"10.1007/s10570-025-06494-y","url":null,"abstract":"<div><p>The solute exclusion technique (SET) is often used to characterise the nano-porous structure of water-swollen cell walls. SET is based on the immersion of water-saturated wood samples in solutions of probe molecules of known size. Based on determined concentration differences in the solution before and after immersion, the accessible water within the wood is determined for each probe. However, this assumes that the concentration of probe molecules is the same in the pores of the material as in the surrounding bulk solution, but the concentration in narrow pores is actually lower than in the bulk solution. This study investigated the nano-porous structure of water-swollen wood cell walls by incorporating these known effects of concentration differences in narrow pores into the analysis. Based on solute exclusion measurements on both untreated and hydrothermally treated Norway spruce wood, the study explored the effect of modification on the nano-porous cell wall structure as well as potential sources of uncertainties such as soaking time, osmotic effects and probe molecule adsorption. The results suggested that the water-swollen, nano-porous structure of untreated and hydrothermally treated Norway spruce was dominated by one characteristic pore size which increased by hydrothermal treatment. The exact size depended on the assumed geometry of the pores.</p></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 6","pages":"3583 - 3595"},"PeriodicalIF":4.9,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10570-025-06494-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908581","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}
引用次数: 0
Effect of sheath flow rate ratio on mechanical properties of cellulose filament fabricated by electric field assisted flow-focusing 鞘层流速比对电场辅助聚焦纤维素长丝力学性能的影响
IF 4.9 2区 工程技术
Cellulose Pub Date : 2025-04-01 DOI: 10.1007/s10570-025-06489-9
Yutaka Kaneko, Satoru Fukumori, Hidemasa Takana
{"title":"Effect of sheath flow rate ratio on mechanical properties of cellulose filament fabricated by electric field assisted flow-focusing","authors":"Yutaka Kaneko,&nbsp;Satoru Fukumori,&nbsp;Hidemasa Takana","doi":"10.1007/s10570-025-06489-9","DOIUrl":"10.1007/s10570-025-06489-9","url":null,"abstract":"<div><p>Cellulose nanofibers (CNFs) are promising environmentally friendly biomass materials. The orientation of the CNFs along the single-filament axis is essential for manufacturing strong CNF-based single filaments. In this study, the effects of the electric field and the flow rate ratio between the upstream and downstream sheath flows on the material properties of CNF filaments are clarified for a double-flow-focusing channel with 45<span>(^circ)</span> sheath flow inlets. The CNF orientation is effectively improved by applying an electric field at any sheath flow rate ratio, leading to outstanding material properties of the fabricated cellulose filament. Furthermore, biased sheath flow rate ratios can improve the material properties of the fabricated filaments. Increasing the upstream sheath flow rate compared to that of the downstream results in thinner filaments and improves the CNF orientation near the filament surface owing to the high shear rate at the interface between the CNFs core flow and sheath flow. As a result, the tensile strength and elastic modulus of the filament improves with the close packing of the CNFs inside. A higher downstream sheath flow rate is found to improve the tensile strength and toughness of the filaments. These results indicate that filaments with different mechanical properties can be selectively obtained by controlling the sheath flow rate ratio.</p></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 6","pages":"3667 - 3684"},"PeriodicalIF":4.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10570-025-06489-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908596","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}
引用次数: 0
Effect and mechanism of binary surfactant mixture in regulating foam properties, fiber dispersion, and paper structure during foam forming 二元表面活性剂混合物在泡沫形成过程中调节泡沫性能、纤维分散和纸结构的作用及机理
IF 4.9 2区 工程技术
Cellulose Pub Date : 2025-04-01 DOI: 10.1007/s10570-025-06493-z
Fuqing Hou, Mengle Huang, Yadong Sun, Yifan Zhan, Chunhui Zhang
{"title":"Effect and mechanism of binary surfactant mixture in regulating foam properties, fiber dispersion, and paper structure during foam forming","authors":"Fuqing Hou,&nbsp;Mengle Huang,&nbsp;Yadong Sun,&nbsp;Yifan Zhan,&nbsp;Chunhui Zhang","doi":"10.1007/s10570-025-06493-z","DOIUrl":"10.1007/s10570-025-06493-z","url":null,"abstract":"<div><p>In the practical production process of foam forming, several mixed surfactant systems need to be developed to improve the foam and paper characteristics. Therefore, this study investigated the synergistic mechanisms of surfactant mixture in prolonging foam stability, improving fiber dispersion, and regulating the paper structure. The results suggested that the mixed surfactant system composed of anionic-cationic/zwitterionic surfactants exhibited the most obvious synergistic effect, which increased the foam half-life from 2.78–3.73 to 8.65–14.55 min, changed the viscoelastic modulus of bubble liquid film from 10.71–29.23 to 18.63–23.47 mN/m. Under the combined action of the electrostatic attraction between surfactant headgroups and the hydrophobic force of carbon chains, the interaction parameters of mixed surfactant systems were − 0.74, − 2.49, and − 4.71, respectively. Compared with the single surfactant system, the adsorbed surfactant molecular layer mass at the solid–liquid interface was increased from 42.9–341.8 to 267.1–424.1 ng/cm<sup>2</sup>. When the surfactant concentration was 0.5 mmol/L, there were a significant amount of small bubbles (diameters 5–50 μm) wrapped around the fiber in the mixed surfactant foam system, which reduced the possibilities of fiber collision and flocculation. Furthermore, the response mechanisms of fiber-bubble interaction strength and foam slurry bubble size distribution on fiber orientation and pore size distribution were summarized. These findings are significant for reducing the production cost of foam forming and optimizing the structure of the foam-formed paper.</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 6","pages":"4003 - 4021"},"PeriodicalIF":4.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908595","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}
引用次数: 0
Self-diffusion coefficient of bound water in longleaf pine wood investigated with pulsed-field-gradient 1H-NMR and molecular simulation 利用脉冲场梯度核磁共振和分子模拟研究了长叶松木材中结合水的自扩散系数
IF 4.9 2区 工程技术
Cellulose Pub Date : 2025-03-27 DOI: 10.1007/s10570-025-06480-4
Jingbo Shi, Chi Zhang, Jie Cui, Youming Dong, Jiabin Cai, Fuji Zhou, Jianxiong Lyu, Stavros Avramidis
{"title":"Self-diffusion coefficient of bound water in longleaf pine wood investigated with pulsed-field-gradient 1H-NMR and molecular simulation","authors":"Jingbo Shi,&nbsp;Chi Zhang,&nbsp;Jie Cui,&nbsp;Youming Dong,&nbsp;Jiabin Cai,&nbsp;Fuji Zhou,&nbsp;Jianxiong Lyu,&nbsp;Stavros Avramidis","doi":"10.1007/s10570-025-06480-4","DOIUrl":"10.1007/s10570-025-06480-4","url":null,"abstract":"<div><p>The self-diffusion coefficient of bound water in longleaf pine wood was studied using pulsed-field-gradient nuclear magnetic resonance (PFG-NMR) and molecular dynamic techniques. The PFG stimulated-echo pulse sequence with different parameter settings was used for the diffusion measurements of fully saturated solid wood samples and samples conditioned to the equilibrium states at a constant relative humidity of 90 and 100% at 45 °C. Additional 20–40 mesh wood powder samples were conditioned at a humidity of 90% at 45 °C. Three coexisting water phases were found for fully saturated samples, indicating self-diffusion from free water, cross-relaxation of bound and free water, and bound water, with estimated longitudinal self-diffusion coefficients in the order of 10<sup>–9</sup>, 10<sup>–9</sup>, and 10<sup>–10</sup> m<sup>2</sup>/s, respectively. The cross-relaxation of bound and free water remains inclusive and requires further investigation. Only one detectable homogeneous water phase was found for samples conditioned at 90 and 100% humidity at 45 °C, with an estimated longitudinal self-diffusion coefficient in the order of 10<sup>–11</sup> m<sup>2</sup>/s. The coefficient from the wood powder sample is one order smaller than the one from the solid wood sample at similar moisture contents. The coefficient was found to be independent of moisture content when close to or above the fiber saturation point, but decreases rapidly with a decrease in moisture content below saturation. The estimated coefficients for cell wall pore sizes of 1.2, 1.6, 2.0 and 2.4 nm from molecular dynamic simulations are generally larger than those determined experimentally, but with errors within an order of magnitude. The PFG-NMR technique and simulation method used here may be applied to reveal the intrinsic self-diffusion behavior of bound water in various wood species or more general cellulosic materials.</p></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 6","pages":"3567 - 3581"},"PeriodicalIF":4.9,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908739","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}
引用次数: 0
Degradable LCNF/ZnO aerogel for ammonia sensing at room temperature 室温下可降解LCNF/ZnO气凝胶氨传感
IF 4.9 2区 工程技术
Cellulose Pub Date : 2025-03-26 DOI: 10.1007/s10570-025-06492-0
Siqi Li, Weijing Chen, Yajie Kou, Shan Wang, Dinggen Hu, Xingxiang Ji, Zhaoqing Lu
{"title":"Degradable LCNF/ZnO aerogel for ammonia sensing at room temperature","authors":"Siqi Li,&nbsp;Weijing Chen,&nbsp;Yajie Kou,&nbsp;Shan Wang,&nbsp;Dinggen Hu,&nbsp;Xingxiang Ji,&nbsp;Zhaoqing Lu","doi":"10.1007/s10570-025-06492-0","DOIUrl":"10.1007/s10570-025-06492-0","url":null,"abstract":"<div><p>With the advancement of industrialization, the emission of toxic and harmful gases has become a significant threat to both environmental quality and human health. Gas sensors exhibit considerable potential in real-time monitoring of these hazardous substances. Given that lignin containing cellulose nanofibers (LCNFs) possess high mechanical strength, a large specific surface area, abundant surface functional groups, and excellent biocompatibility, they are promising substrates for gas sensing applications. In this study, LCNF/ZnO aerogels designed for NH<sub>3</sub> sensing were synthesized via a straightforward hydrothermal reaction followed by freeze-drying. Room-temperature sensing performance was enhanced by incorporating a small quantity of carbon nanotubes to improve the electronic conduction pathway. Experimental results indicate that the LCNF/ZnO composite aerogel exhibits rapid recovery time, specifically 22 s, with a response value reaching 4.94% at a room temperature concentration of 50 ppm ammonia. Moreover, the material demonstrates degradability. Buried in the ground, the aerogel substrate completely degrades within three weeks. The development of LCNF/ZnO composite aerogels not only expands the application scope of ZnO in real-time NH<sub>3</sub> monitoring at room temperature but also offers a novel approach towards green and sustainable utilization of LCNFs in gas sensing.</p></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 6","pages":"3919 - 3939"},"PeriodicalIF":4.9,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908897","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}
引用次数: 0
Stress-assisted, clustering-triggered visual emission of cellulose-based materials 应力辅助、聚类触发的纤维素基材料的视觉发射
IF 4.9 2区 工程技术
Cellulose Pub Date : 2025-03-25 DOI: 10.1007/s10570-025-06490-2
Oleg Dimitriev, Huotian Zhang, Anna Dávid, Olof Eskilson, Daniel Aili, Lukas Marcos Celada, Peter Olsén, Feng Gao, Mats Fahlman
{"title":"Stress-assisted, clustering-triggered visual emission of cellulose-based materials","authors":"Oleg Dimitriev,&nbsp;Huotian Zhang,&nbsp;Anna Dávid,&nbsp;Olof Eskilson,&nbsp;Daniel Aili,&nbsp;Lukas Marcos Celada,&nbsp;Peter Olsén,&nbsp;Feng Gao,&nbsp;Mats Fahlman","doi":"10.1007/s10570-025-06490-2","DOIUrl":"10.1007/s10570-025-06490-2","url":null,"abstract":"<div><p>Cellulose-based materials can be classified as non-conventional luminogens that produce photoluminescence (PL) in the visible range due to specific intermolecular arrangements. Usually such an arrangement is referred to as clusterization. Here, we demonstrate the importance of intramolecular arrangement of ethyl cellulose and bacterial cellulose that demonstrate tunable photoluminescence with multiexponent decay. We show that the observed emission is due to a n–π* electronic transition of carbonyl groups, whose emission intensity depends on the form of the sample preparation, either the powder-form or spin-coated films, displaying different density of the emitting regions on the microscale. Particularly, it is shown that PL emission is produced from disordered amorphous regions rather than from crystalline ones. We show that the emission is also promoted by mechanical stress applied to the sample that is suggested to facilitate formation of hydrogen-bonded carbonyl groups. The observed stress-assisted emission opens up the potential perspective of using this phenomenon in printed photonic devices.</p></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 6","pages":"3651 - 3666"},"PeriodicalIF":4.9,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908720","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}
引用次数: 0
Preparation of pH-sensitive carboxymethyl cellulose/bovine serum albumin composite particles and evaluation of their drug delivery capacity ph敏感型羧甲基纤维素/牛血清白蛋白复合颗粒的制备及其给药性能评价
IF 4.9 2区 工程技术
Cellulose Pub Date : 2025-03-24 DOI: 10.1007/s10570-025-06479-x
Kaiqiang Zheng, Ziang Quan, Xiaohui Wang, Shihao Zhou, Kuo Wang, Meng Cui
{"title":"Preparation of pH-sensitive carboxymethyl cellulose/bovine serum albumin composite particles and evaluation of their drug delivery capacity","authors":"Kaiqiang Zheng,&nbsp;Ziang Quan,&nbsp;Xiaohui Wang,&nbsp;Shihao Zhou,&nbsp;Kuo Wang,&nbsp;Meng Cui","doi":"10.1007/s10570-025-06479-x","DOIUrl":"10.1007/s10570-025-06479-x","url":null,"abstract":"<div><p>This study developed structurally stable, high-performance drug delivery composite particles using a simple and portable electrostatic self-assembly method involving carboxymethyl cellulose (CMC) and bovine serum albumin (BSA). Adjusting the system’s pH to below the isoelectric point of BSA induced a positive charge, promoting electrostatic attraction and assembly with CMC. The resulting composite particles were characterized, and the factors influencing their properties were systematically analyzed. Amoxicillin and theophylline were selected as model drugs to assess the sustained-release performance of the composite particles. The results indicated that the particles exhibited uniform morphology, with an average size of 308 nm and a dispersity (Ð) of 0.184 before heating. After heating, the particle size increased to 412 nm, with a Ð of 0.196. The encapsulation efficiencies for amoxicillin and theophylline were 69 and 53%, respectively, with the sustained-release profile demonstrating efficient drug-loading and sustained-release capabilities. This study highlights the potential of CMC as a natural, high molecular weight material for small molecule drug delivery and emphasizes the developmental prospects of composite systems integrating proteins like BSA with polysaccharides.</p></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 6","pages":"3815 - 3832"},"PeriodicalIF":4.9,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908717","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}
引用次数: 0
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