Cellulose最新文献

筛选
英文 中文
Impact of cellulose nanofibril modification on the electrochemical performance of Ti3C2Tx-based supercapacitors 纳米纤维素改性对ti3c2tx基超级电容器电化学性能的影响
IF 4.8 2区 工程技术
Cellulose Pub Date : 2025-07-10 DOI: 10.1007/s10570-025-06663-z
Zhengbang Yang, Yi Lu, Ming He, Yue Qi, Guihua Yang, Jiachuan Chen, Ying Wang, Orlando J. Rojas
{"title":"Impact of cellulose nanofibril modification on the electrochemical performance of Ti3C2Tx-based supercapacitors","authors":"Zhengbang Yang,&nbsp;Yi Lu,&nbsp;Ming He,&nbsp;Yue Qi,&nbsp;Guihua Yang,&nbsp;Jiachuan Chen,&nbsp;Ying Wang,&nbsp;Orlando J. Rojas","doi":"10.1007/s10570-025-06663-z","DOIUrl":"10.1007/s10570-025-06663-z","url":null,"abstract":"<div><p>Two-dimensional MXenes (Ti<sub>3</sub>C<sub>2</sub>T<sub><i>x</i></sub>) exhibit metallic conductivity and high capacitance, making them a promising electrode material for flexible supercapacitors. However, the self-stacking of Ti<sub>3</sub>C<sub>2</sub>T<sub><i>x</i></sub> nanosheets hinders ion transport and diffusion, adversely affecting electrochemical performance. Here, we study the incorporation of one-dimensional (1D) cellulose nanofibrils (CNFs) with Ti<sub>3</sub>C<sub>2</sub>T<sub><i>x</i></sub> via interfacial interactions to show the possibility of preventing the close packing of conductive nanosheets, improving electrolyte ion transport and enhancing the mechanical strength and robustness of the dried material, enabling the fabrication of flexible, self-supporting hybrid films. For this purpose, we consider the impact of surface-modified CNFs on the structure and performance of Ti<sub>3</sub>C<sub>2</sub>T<sub><i>x</i></sub> composite electrodes. Sulfated CNFs (SCNFs) are evaluated as scaffolding materials and compared with unmodified CNFs and carboxymethylated CNFs (CMCNFs). The Ti<sub>3</sub>C<sub>2</sub>T<sub><i>x</i></sub>/SCNF hybrid electrode is demonstrated to achieve a specific capacitance of 218.3 F g<sup>−1</sup> at 1 A g<sup>−1</sup> and stable charge/discharge cycling. A symmetric solid-state supercapacitor is assembled with Ti<sub>3</sub>C<sub>2</sub>T<sub><i>x</i></sub>/SCNF hybrid electrodes and shown to deliver an excellent specific capacitance of 241.2 mF cm<sup>−2</sup>, an energy density of 12.3 µWh cm<sup>−2</sup> at a power density of 148.4 µW cm<sup>−2</sup>. Notably, the device maintains nearly constant capacitance under 180° bending. Overall, this work highlights an effective approach for developing high-performance flexible electrodes, advancing the development of next-generation energy storage devices.</p></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 12","pages":"7131 - 7143"},"PeriodicalIF":4.8,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868640","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
The effect of organic stabilizers on the thermal stability and kinetics of innovative energetic cellulose carbamate nitrate/diethylene glycol dinitrate 有机稳定剂对新型高能硝酸氨基甲酸酯纤维素/硝酸二甘醇热稳定性和动力学的影响
IF 4.8 2区 工程技术
Cellulose Pub Date : 2025-07-10 DOI: 10.1007/s10570-025-06661-1
Lokmene Boumaza, Ahmed Fouzi Tarchoun, Amir Abdelaziz, Yacine Yahi, Nabil Slimani, Chemseddine Boustila, Weiqiang Pang, Thomas M. Klapötke, Djalal Trache
{"title":"The effect of organic stabilizers on the thermal stability and kinetics of innovative energetic cellulose carbamate nitrate/diethylene glycol dinitrate","authors":"Lokmene Boumaza,&nbsp;Ahmed Fouzi Tarchoun,&nbsp;Amir Abdelaziz,&nbsp;Yacine Yahi,&nbsp;Nabil Slimani,&nbsp;Chemseddine Boustila,&nbsp;Weiqiang Pang,&nbsp;Thomas M. Klapötke,&nbsp;Djalal Trache","doi":"10.1007/s10570-025-06661-1","DOIUrl":"10.1007/s10570-025-06661-1","url":null,"abstract":"<div><p>This study investigates the stability and thermo-kinetic behavior of a novel energetic composite (EC) composed of nitrated cellulose carbamate (NCC) and diethylene glycol dinitrate (DEGDN), with the incorporation of organic stabilizers. Although conventional stabilizers are effective in enhancing stability, they often pose serious environmental and toxicological concerns due to their chemical persistence and potential hazards. In this context, the current work evaluates the performance of kraft lignin, a biodegradable and low-toxicity biopolymer, in comparison with traditional stabilizers. The molecular structure and thermo-kinetic behavior of EC were systematically evaluated, where EC 1 represents the NCC/DEGDN baseline, while EC 2, EC 3, and EC 4 correspond to formulations stabilized with 1,3-dimethyl-1,3-diphenylurea (C2), 2-nitrodiphenylamine (2-NDPA), and kraft lignin, respectively. Experimental results demonstrated that kraft lignin exhibits stabilizing efficiency comparable to that of conventional stabilizers. Thermal analysis revealed that the incorporation of 2-NDPA, C2, and lignin significantly increased the thermal decomposition temperature of the NCC/DEGDN composite. Furthermore, kinetic studies of the thermolysis of stabilized composites with C2,2-NDPA, and lignin indicated an improvement in the Arrhenius parameters compared to the baseline NCC/DEGDN. These findings highlight the potential of kraft lignin as an effective and environmentally sustainable stabilizer for nitrate ester-based energetic materials.</p></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 12","pages":"7319 - 7334"},"PeriodicalIF":4.8,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868641","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
Extraction, preparation and characterization of cellulose nanofibers from Coix lacryma-jobi L. straw 薏苡仁秸秆纤维素纳米纤维的提取、制备及表征
IF 4.8 2区 工程技术
Cellulose Pub Date : 2025-07-08 DOI: 10.1007/s10570-025-06656-y
Ying Li, Kunshun Luo, Yue Zhu, Teng Chen, Zhiyong Chen, Jing Yang, Ying Zhou, Tingting Feng, Zuhua Wang
{"title":"Extraction, preparation and characterization of cellulose nanofibers from Coix lacryma-jobi L. straw","authors":"Ying Li,&nbsp;Kunshun Luo,&nbsp;Yue Zhu,&nbsp;Teng Chen,&nbsp;Zhiyong Chen,&nbsp;Jing Yang,&nbsp;Ying Zhou,&nbsp;Tingting Feng,&nbsp;Zuhua Wang","doi":"10.1007/s10570-025-06656-y","DOIUrl":"10.1007/s10570-025-06656-y","url":null,"abstract":"<div><p>In China, agricultural waste such as plant straw is frequently burned or buried, generating significant pollution. Urgent reuse is required, notably for <i>Coix lacryma-jobi</i> L. – a medicinal-edible herb whose straw may contain valuable bioactive compounds. In this study, we employed <i>Coix lacryma-jobi</i> L. straw (CS) as a novel source for the preparation of cellulose nanofibers (CNFs) via chemical methods, which was further characterized using SEM, TEM, FTIR, TGA and XRD, and the biocompatibility, biosafety and bioactivity of CS-CNFs were also systematically evaluated. The average diameter of produced CS-CNFs was (7.95 ± 2.67) nm, average length was (405.30 ± 109.40) nm. Hemicellulose and lignin were gradually removed after different stages of treatment. The crystallinity index progressively increased to (68.1 ± 1.6) % following successive treatments. The CS-CNFs showed excellent biocompatibility and biosafety within the assayed concentration range (10–200 µg/mL). Their hemolysis ratio was below 3.8%, and could promote migration and proliferation of L-929 cells with a cell migration rate of (88.1 ± 3.1) % when incubated with 10 μg/mL CS-CNFs for 72 h. The colony number of CS-CNFs at concentrations of 200 μg/mL was 305 ± 13.1, compared with the control group (234 ± 14.0). In addition, 1 wt% CS-CNFs showed the potential to inhibit the growth of <i>S. aureus, E. coli</i> and <i>P. aeruginosa.</i> More importantly, CS-CNFs at a concentration of 200 µg/mL could reduce the release of inflammatory factor NO. The study paved a promising approach to reutilize the biomass agricultural wastes from CS for biomedical applications, especially in the field of wound dressings.</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 12","pages":"7113 - 7130"},"PeriodicalIF":4.8,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868788","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
The isotopic effect of deuteration on the conductive properties of chitosan films 氘化对壳聚糖薄膜导电性能的同位素效应
IF 4.8 2区 工程技术
Cellulose Pub Date : 2025-07-07 DOI: 10.1007/s10570-025-06641-5
Aitolkyn Uali, Assylay Aslanbek
{"title":"The isotopic effect of deuteration on the conductive properties of chitosan films","authors":"Aitolkyn Uali,&nbsp;Assylay Aslanbek","doi":"10.1007/s10570-025-06641-5","DOIUrl":"10.1007/s10570-025-06641-5","url":null,"abstract":"<div><p>Chitosan biopolymer has gained attention due to its distinctive chemical and environmental characteristics, such as its biocompatibility and biodegradability, ability to form fibres/films, and ionic conductivity. Its functional groups offer various interactions, including cross-linking, intermolecular hydrogen bonding, complex formation, and chelation. All this makes chitosan one of the most extensively used platforms for developing biomedical and pharmaceutical applications, agriculture, water treatment, environmental protection, energy storage systems and many others. This study examined the structure and properties of protonated and partially deuterated chitosan films. Herein, we present the chitosan films prepared from their acidic solutions by casting. By employing spectroscopic techniques, it was shown that, firstly, there is a partial deuteration of chitosan polymer films; secondly, the higher the content of D<sub>2</sub>O used for deuteration, the lower the conductivity of CS films, thus, the more apparent isotope effect arising from hydrogen–deuterium exchange in the polymer structure. The conductive properties were evaluated by using chronoamperometry and a four-probe approach. This work provides a simple way to shed light on the probable semi-classical nature of the mechanism underlying the conductive properties of chitosan.</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 11","pages":"6463 - 6475"},"PeriodicalIF":4.8,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145163208","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
Multi-stimuli-responsive carboxymethyl cellulose/κ-carrageenan nanogels integrated with magnetic graphene oxide for colon-specific delivery of sunitinib 多重刺激响应的羧甲基纤维素/κ-卡拉胶纳米凝胶与磁性氧化石墨烯集成用于结肠特异性递送舒尼替尼
IF 4.8 2区 工程技术
Cellulose Pub Date : 2025-07-05 DOI: 10.1007/s10570-025-06635-3
Nuran Işıklan, Harun Aytekin, Ömer Sonkaya, Enes Güncüm
{"title":"Multi-stimuli-responsive carboxymethyl cellulose/κ-carrageenan nanogels integrated with magnetic graphene oxide for colon-specific delivery of sunitinib","authors":"Nuran Işıklan,&nbsp;Harun Aytekin,&nbsp;Ömer Sonkaya,&nbsp;Enes Güncüm","doi":"10.1007/s10570-025-06635-3","DOIUrl":"10.1007/s10570-025-06635-3","url":null,"abstract":"<div><p>The multi-stimuli-responsive nanohydrogels provide a powerful strategy for enhancing drug utilization, preservation, controlled release, and minimizing systemic toxicity. Herein, we designed and developed a new multi-stimuli-responsive magnetic graphene oxide (MGO) integrated carboxymethyl cellulose/κ-carrageenan (CMC/CG/MGO) nanogels (NGs) for colon-specific delivery of sunitinib (SU). The physicochemical properties of the CMC/CG/MGO NGs were investigated by various analytical techniques of XRD, FTIR, TGA VSM, DLS, BET, and FESEM/TEM. The in-vitro SU release results exhibited that the CMC/CG/MGO NGs have a sustained release behavior with good pH, magnetic field, and near-infrared (NIR) light-dependent properties. The integrated photothermal agent MGO endowed the CMC/CG NGs with efficient photothermal properties, enabling precise SU release control under NIR laser irradiation. The CMC/CG/MGO/SU NGs displayed a good photothermal conversion effect (η = 38.5%). Besides, the CMC/CG/MGO NGs were not cytotoxic (cell viability &gt; 73% at 15.6–500 ppm) for the L929 fibroblast and Caco-2 cell lines. The MTT results also revealed that the CMC/CG/MGO/SU NGs exhibited enhanced anti-cancer activity compared to free SU under NIR laser irradiation. These results highlight the potential of CMC/CG/MGO/SU NGs as a promising candidate for remotely controlled multi-stimuli-responsive drug delivery.</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 11","pages":"6727 - 6751"},"PeriodicalIF":4.8,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10570-025-06635-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162575","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
Reduced graphene oxide/polyaniline encapsulated SiO2 microspheres improve sensitivity and range of a piezoresistive pressure sensor 还原氧化石墨烯/聚苯胺封装SiO2微球提高了压阻式压力传感器的灵敏度和量程
IF 4.8 2区 工程技术
Cellulose Pub Date : 2025-07-05 DOI: 10.1007/s10570-025-06624-6
Zhengchuan Hu, You Wu, Li Tang, Weibo Zhou, Jieqiong Wang, Wei Wu, Ming Li, Lu Wang
{"title":"Reduced graphene oxide/polyaniline encapsulated SiO2 microspheres improve sensitivity and range of a piezoresistive pressure sensor","authors":"Zhengchuan Hu,&nbsp;You Wu,&nbsp;Li Tang,&nbsp;Weibo Zhou,&nbsp;Jieqiong Wang,&nbsp;Wei Wu,&nbsp;Ming Li,&nbsp;Lu Wang","doi":"10.1007/s10570-025-06624-6","DOIUrl":"10.1007/s10570-025-06624-6","url":null,"abstract":"<div><p>Wood sponges, characterized by their low density and highly anisotropic porous structure, demonstrate significant potential for wearable and flexible electronic devices. However, fabricating multifunctional integrated sensors with wide operating ranges and linear response characteristics remains a challenge. In this study, we propose a polyaniline/graphene-modified wood sponge piezoresistive sensing material (PGWS). The synergistic interaction between polyaniline (PANI) microspheres and reduced graphene oxide (rGO) nanosheets enhances the structural stability of the sensor. The PGWS material exhibits high compressibility (up to 70% strain), excellent elasticity (95.36% height retention after 200 compression cycles), high sensitivity, and a broad pressure detection range (0–200 kPa). These advancements significantly improve the application prospects of wood sponge-based piezoresistive sensors in next-generation flexible electronics.</p></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 11","pages":"6433 - 6447"},"PeriodicalIF":4.8,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162577","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
Determination of molar-mass parameters of TEMPO-oxidized pulps by SEC/MALLS/RI 用SEC/MALLS/RI测定tempo氧化纸浆的摩尔质量参数
IF 4.8 2区 工程技术
Cellulose Pub Date : 2025-07-05 DOI: 10.1007/s10570-025-06636-2
Gaoyuan Hou, Korawit Chitbanyong, Miyuki Takeuchi, Izumi Shibata, Akira Isogai
{"title":"Determination of molar-mass parameters of TEMPO-oxidized pulps by SEC/MALLS/RI","authors":"Gaoyuan Hou,&nbsp;Korawit Chitbanyong,&nbsp;Miyuki Takeuchi,&nbsp;Izumi Shibata,&nbsp;Akira Isogai","doi":"10.1007/s10570-025-06636-2","DOIUrl":"10.1007/s10570-025-06636-2","url":null,"abstract":"<div><p>Molar-mass (MM) and MM distributions of TEMPO-oxidized pulps (TEMPO: 2,2,6,6-tetramethylpiperidine-1-oxyl radical) measured under the same conditions as those of the original pulps are important for understanding the changes of MM parameters of cellulose molecules in pulps during TEMPO-catalyzed oxidation. The carboxy groups in TEMPO-oxidized pulps prepared from softwood and hardwood bleached kraft pulps were esterified in high yield by trimethylsilyl diazomethane using a newly established protocol, which enabled complete dissolution in 8% (w/w) lithium chloride/<i>N</i>,<i>N</i>-dimethylacetamide (LiCl/DMAc). A linear relationship was obtained between the carboxy contents (0.05–2.68 mmol/g) of TEMPO-oxidized pulps and the signal area ratio of methyl/C1 carbon atoms in solid-state <sup>13</sup>C NMR spectra of the esterified products. Next, 1% (w/v) LiCl/DMAc solutions of the original pulps and TEMPO-oxidized and then esterified products were subjected to size-exclusion chromatography with refractive index and multi-angle static laser light scattering detection. Chromatographic elution patterns, MM plots, conformation plots, and related MM parameters of the pulps and esterified products were obtained with good reproducibility. The results showed that the changes of the degree of polymerization and its distribution for TEMPO-oxidized pulps can be investigated in terms of carboxy content, mass recovery ratio, and TEMPO-catalyzed oxidation conditions.</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 11","pages":"6449 - 6461"},"PeriodicalIF":4.8,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10570-025-06636-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162580","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
Sulfated cellulose pulp with ultra-high water retention characteristics 硫酸盐纤维素浆具有超高保水特性
IF 4.8 2区 工程技术
Cellulose Pub Date : 2025-07-05 DOI: 10.1007/s10570-025-06609-5
Sakura Morimitsu, Ayato Nishimura, Kenzo Deguchi, Yuuki Mogami, Shinobu Ohki, Kenjiro Hashi, Atsushi Goto, Kazuhiko Yamada
{"title":"Sulfated cellulose pulp with ultra-high water retention characteristics","authors":"Sakura Morimitsu,&nbsp;Ayato Nishimura,&nbsp;Kenzo Deguchi,&nbsp;Yuuki Mogami,&nbsp;Shinobu Ohki,&nbsp;Kenjiro Hashi,&nbsp;Atsushi Goto,&nbsp;Kazuhiko Yamada","doi":"10.1007/s10570-025-06609-5","DOIUrl":"10.1007/s10570-025-06609-5","url":null,"abstract":"<div><p>A sulfated cellulose pulp (SCP) exhibiting ultra-high water retention properties has been developed, and its water retention mechanisms have been analyzed based on molecular structures determined by solid-state <sup>13</sup>C nuclear magnetic resonance (NMR). Cellulose pulp (CP) from wood is sulfated using a sulfamic acid and urea reaction system with varying concentrations of sulfamic acid. SCP has 1.04–1.93 mmol/g of sulfate groups and exhibits a high water retention value (WRV) of 16,000%, which is approximately 100 times greater than that of CP. After the sulfate reaction, new peaks at 69 ppm are observed in the <sup>1</sup>H–<sup>13</sup>C cross-polarization/magic angle spinning and dipolar decoupling/MAS (DDMAS) <sup>13</sup>C NMR spectra, which are assigned to the sulfated C6. Quantitative evaluation of area ratios of the corresponding peaks in the <sup>13</sup>C DDMAS NMR spectra indicates that approximately 18% of C6 in CP is maximally converted to sulfated C6 when R = 4.19. The present work demonstrates that the WRV is related to the amount of sulfated C6, which guides the design of future absorbent materials based on CP.</p></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 11","pages":"6717 - 6726"},"PeriodicalIF":4.8,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162581","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
Existence state of water in lyocell fibres and effect on fibres microstructure and macroscopic mechanical properties 水在莱赛尔纤维中的存在状态及其对纤维微观结构和宏观力学性能的影响
IF 4.8 2区 工程技术
Cellulose Pub Date : 2025-07-04 DOI: 10.1007/s10570-025-06650-4
Zhongkai Xu, Min Cheng, Fangyue Cheng, Jigang Xu, Peng Wei, Chunzu Cheng
{"title":"Existence state of water in lyocell fibres and effect on fibres microstructure and macroscopic mechanical properties","authors":"Zhongkai Xu,&nbsp;Min Cheng,&nbsp;Fangyue Cheng,&nbsp;Jigang Xu,&nbsp;Peng Wei,&nbsp;Chunzu Cheng","doi":"10.1007/s10570-025-06650-4","DOIUrl":"10.1007/s10570-025-06650-4","url":null,"abstract":"<div><p>Lyocell fibres are regarded as one of the most promising cellulose materials. Their sensitivity to moisture variations significantly impacts their applicability potential across diverse fields. Previous research have primarily focused on the interaction between cellulose fibres and water at high moisture levels (&gt; 50%), while the critical influence of lower moisture content (&lt; 25%) on lyocell fibres structure and properties remains largely ignored. This study systematically investigates the effects of low water content on fibres characteristics through four complementary approaches: low field nuclear magnetic resonance (LF-NMR) for analyzing binding force between cellulose and water, differential scanning calorimetry (DSC) for analyzing water phase states, small-angle X-ray scattering for characterizing microporous structural changes, and mechanical property evaluation. LF-NMR analysis indicated that all the water within the lyocell fibres exist in a bound state when the moisture content of cellulose is below 25%. Furthermore, it was observed that as the water content increases, the binding force between water and cellulose diminishes. DSC analysis indicated that three different phases of water exist within lyocell fibres at varying moisture contents: 0–4%, 5–11%, and 11–25%. These phases were identified as “bound water”, “secondary-bound water” and “free-bound water”, respectively. The bound water shows no melting peak, while secondary-bound water exhibit characteristic melting peaks at − 32 °C, and free-bound has a wider melting peak from − 32–0 °C. Notably, bound water enhances fibres strength by 40% through micropore size reduction, whereas secondary-bound water increases fibres elongation but reduces fibres modulus through plasticization effect on fibres mechanical properties. These findings establish a foundation for comprehending the relationship between lyocell fibres and water, highlighting the crucial role of water in enhancing the strength of lyocell fibres. Furthermore, this research offers valuable insights for optimizing the application of lyocell fibres.</p></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 12","pages":"7017 - 7027"},"PeriodicalIF":4.8,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868759","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
Transforming jute waste into high-performance biodegradable polyurethane bionanocomposites 将黄麻废料转化为高性能可生物降解的聚氨酯生物纳米复合材料
IF 4.8 2区 工程技术
Cellulose Pub Date : 2025-07-04 DOI: 10.1007/s10570-025-06653-1
Dheeraj Ahuja, Lokesh Kumar, Savita Jain, Binayaka Nahak, Anupama Kaushik
{"title":"Transforming jute waste into high-performance biodegradable polyurethane bionanocomposites","authors":"Dheeraj Ahuja,&nbsp;Lokesh Kumar,&nbsp;Savita Jain,&nbsp;Binayaka Nahak,&nbsp;Anupama Kaushik","doi":"10.1007/s10570-025-06653-1","DOIUrl":"10.1007/s10570-025-06653-1","url":null,"abstract":"<div><p>Bionanocomposites have been synthesized by reinforcing cellulose nanofibers (CNFs) into lignopolyol based polyurethane (PU). Both lignin and cellulose nanofibers were isolated synchronously from waste discarded jute bags. The effect of cellulose nanofiller (concentration ranging from 0 to 15 wt.%) on mechanical properties, thermal stability and hydrolytic degradation of the synthesized PU/CNF nanocomposites was also examined both experimentally and statistically. The mechanical and thermal properties were studied using thermal gravimetric analysis (TGA-DTG) and tensile testing. The hydrolytic degradation of PU nanocomposites was studied in phosphate buffer saline (PBS) for 8 weeks. Multivariate analysis of variance (MANOVA) is utilized to analyze the effect of cellulose nanofiller concentration. The 10% addition of CNFs resulted in more than 600 ± 10% and 181% ± 8 increase in tensile strength and hydrolytic degradation. The MANOVA results demonstrated a significant correlation between cellulose nanofiller concentration and the mechanical properties, thermal stability, and hydrolytic stability of the nanocomposites.</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 12","pages":"7187 - 7206"},"PeriodicalIF":4.8,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868760","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
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信