Cellulose最新文献

筛选
英文 中文
Fire performance comparison of bamboo-wood composite and spruce-pine-fir cross-laminated timber panels 竹木复合材料与云杉松木交叉层压板防火性能比较
IF 4.8 2区 工程技术
Cellulose Pub Date : 2025-08-14 DOI: 10.1007/s10570-025-06692-8
Benhuan Xu, Qingping Chen, Rongzhuo Zhang, Zheng Wang
{"title":"Fire performance comparison of bamboo-wood composite and spruce-pine-fir cross-laminated timber panels","authors":"Benhuan Xu,&nbsp;Qingping Chen,&nbsp;Rongzhuo Zhang,&nbsp;Zheng Wang","doi":"10.1007/s10570-025-06692-8","DOIUrl":"10.1007/s10570-025-06692-8","url":null,"abstract":"<div><p>The increasing demand for energy-efficient and sustainable building materials has driven the growth of cross-laminated timber (CLT) in heavy timber construction. However, the flammability of wood remains a key challenge. This study compares the combustion characteristics of laminated bamboo lumber (LBL) and spruce–pine–fir (SPF) in bamboo–wood composite (BWC) CLT panels. Using a cone calorimeter, the combustion parameters of both materials were measured, and the effects of heat flux were analyzed. Fire furnace experiments were also conducted to evaluate the charring rate, fire performance, and structural integrity of the panels under standard fire conditions. Results show that LBL exhibits superior fire performance compared to SPF upon ignition, but its peak heat release rate during secondary combustion is more intense, indicating a higher thermal hazard. However, LBL maintains its structural integrity longer after combustion and produces lower emissions of CO and CO<sub>2</sub>, reducing health risks. The charring rate of BWC CLT is higher than that of SPF, but it meets fire resistance limits exceeding 1.5 h. This performance, coupled with the unique fiber arrangement of bamboo and slow combustion rate, highlights its potential in enhancing fire safety. The findings contribute to the optimization of CLT design for improved fire performance, supporting sustainable development in fire-resistant timber construction.</p></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 13","pages":"7911 - 7928"},"PeriodicalIF":4.8,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011469","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
Enzymatic degumming of hemp: a literature review 大麻的酶解脱胶:文献综述
IF 4.8 2区 工程技术
Cellulose Pub Date : 2025-08-14 DOI: 10.1007/s10570-025-06697-3
Siyan Wang, Sonja Salmon
{"title":"Enzymatic degumming of hemp: a literature review","authors":"Siyan Wang,&nbsp;Sonja Salmon","doi":"10.1007/s10570-025-06697-3","DOIUrl":"10.1007/s10570-025-06697-3","url":null,"abstract":"<div><p>Industrial hemp has attracted public attention in recent years since its planting legalization in the United States in 2018. Hemp exhibits unique advantages compared to cotton in sustainability and physical properties such as lower water consumption for cultivation and high tensile strength as a technical fiber. However, due to the complex chemical composition in hemp fiber, traditional hemp fiber processing has required harsh chemicals to remove the impurities, generating undesirable effluents. One approach toward achieving more sustainable hemp fiber production is to lower chemical requirements by employing enzymatic fiber degumming treatments. Natural gums must be removed to achieve high quality spinnable fibers. This review presents a thorough discussion of hemp fiber composition and structure as prerequisites for subsequent discussion of enzyme reactions on three main substrates in the gum—hemicellulose, lignin and pectin. Understanding the specific chemical structure of each substrate is essential for choosing corresponding enzymes for the treatment. The impacts of different enzymatic hemp degumming treatments are compared and their related characterization methods are assessed. As a result, this article provides the hemp industry with structure–function based guidance on degumming hemp with enzymes and offers strategies for establishing green production approaches to achieve sustainability for the industry.</p></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 13","pages":"7501 - 7533"},"PeriodicalIF":4.8,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10570-025-06697-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011808","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
Efficient homogeneous derivatization of cellulose in ditetrabutylammonium hydrogen phosphate/dimethyl sulfoxide 纤维素在二叔丁基磷酸氢铵/二甲基亚砜中高效均相衍生化
IF 4.8 2区 工程技术
Cellulose Pub Date : 2025-08-14 DOI: 10.1007/s10570-025-06706-5
Jingwei Wu, Ziwei Guo, Tingting Zhang, Yifan Jiao, Hongliang Kang, Ruigang Liu
{"title":"Efficient homogeneous derivatization of cellulose in ditetrabutylammonium hydrogen phosphate/dimethyl sulfoxide","authors":"Jingwei Wu,&nbsp;Ziwei Guo,&nbsp;Tingting Zhang,&nbsp;Yifan Jiao,&nbsp;Hongliang Kang,&nbsp;Ruigang Liu","doi":"10.1007/s10570-025-06706-5","DOIUrl":"10.1007/s10570-025-06706-5","url":null,"abstract":"<div><p>The new cellulose solvent, ditetrabutylammonium hydrogen phosphate/dimethyl sulfoxide (TBA<sub>2</sub>HPO<sub>4</sub>/DMSO), can be used as reaction medium for the homogeneous derivatization of cellulose. Due to the excellent solubility, both homogenous esterification and etherification of cellulose can be carried out at mild temperature in concentrated cellulose solution. Cellulose acetate (CA) with the desired degree of substitution, ranging from 0.6 to 2.46, has been successfully prepared in TBA<sub>2</sub>HPO<sub>4</sub>/DMSO by varying the reaction parameters, including reaction time, temperature, the amount of acetic anhydride and the composition of solvents. The functional group distribution is consistent with that of homogenous reactions. The solubility of synthesized CA in some common solvents, such as DMSO, DMF, CHCl<sub>3</sub>, THF, pyridine, acetone, and H<sub>2</sub>O, depends on the degree of substitution (DS) and distribution of substitution. Meanwhile, due to the weak alkalinity of the solvent, the homogeneous etherification reaction can be easily carried out, without extra alkali addition. Hydroxypropyl cellulose (HPC) and carboxymethyl cellulose (CMC) can be synthesized in the homogeneous TBA<sub>2</sub>HPO<sub>4</sub>/DMSO system. The DS of HPC increases with the rising feeding epoxypropane/AGU ratio. CMC with higher DS can also be obtained with the addition of NaOH. The results in this work confirm that TBA<sub>2</sub>HPO<sub>4</sub>/DMSO solvent system is a promising medium for the homogenous esterification and etherification of cellulose, which would provide a new platform for further study of homogeneous cellulose reactions and functional cellulose materials.</p></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 13","pages":"7647 - 7658"},"PeriodicalIF":4.8,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011809","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
A hydroxypropyl methyl cellulose-based nano-pesticide delivery system for enhanced photostability and insecticidal activity of indoxacarb 一种羟丙基甲基纤维素基纳米农药给药系统,用于增强茚虫威的光稳定性和杀虫活性
IF 4.8 2区 工程技术
Cellulose Pub Date : 2025-08-14 DOI: 10.1007/s10570-025-06658-w
Yanmin Huang, Linlin Wang, Weiguo Li, Jiansheng Li, Qiucui Yao, Yinze Liang, Jianguo Cui
{"title":"A hydroxypropyl methyl cellulose-based nano-pesticide delivery system for enhanced photostability and insecticidal activity of indoxacarb","authors":"Yanmin Huang,&nbsp;Linlin Wang,&nbsp;Weiguo Li,&nbsp;Jiansheng Li,&nbsp;Qiucui Yao,&nbsp;Yinze Liang,&nbsp;Jianguo Cui","doi":"10.1007/s10570-025-06658-w","DOIUrl":"10.1007/s10570-025-06658-w","url":null,"abstract":"<div><p>The utilization of nano-pesticides offers a more sustainable approach to agricultural development, as they exhibit reduced environmental pollution and enhanced bioavailability compared to conventional pesticides. In this study, hydroxypropyl methyl cellulose (HPMC) was employed as the carrier for indoxacarb pesticide, through the implementation of high-speed stirring cutting and ultrasonic dispersion technology, and an indoxacarb-hydroxypropyl methyl cellulose (IN@HPMC) nano-formulation with a particle size of approximately 200 nm was successfully prepared. The IN@HPMC nano-formulation exhibits excellent sustained-release ability. Compared with commercial indoxacarb suspension (IN-SC), IN-SC was completely released at 81 h after release at 25°C under 30% acetonitrile solution. The release rate of IN@HPMC nano-formulation was 71%. Moreover, it demonstrates a photolytic half-life (<i>T</i><sub>0.5</sub>) of 117 h, indicating significantly enhanced resistance to photolysis compared to general indoxacarb suspension (IN-SC, <i>T</i><sub>0.5</sub>: 2.8h). Additionally, compared to the IN-SC control group, the IN@HPMC nano-formulation shows significantly enhanced insecticidal toxicity and duration, and the fatality rate in the IN@HPMC group reached 72% at a concentration of 12.5 ppm, whereas the IN-SC group is only 39%. Furthermore, it has lower plant toxicity than indoxacarb while being non-toxic to normal human cells.</p></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 13","pages":"7861 - 7875"},"PeriodicalIF":4.8,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011470","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
A semi-automatic workflow for atomic force microscopy image analysis and cellulose nanocrystal particle size measurements 原子力显微镜图像分析和纤维素纳米晶体粒度测量的半自动工作流程
IF 4.8 2区 工程技术
Cellulose Pub Date : 2025-08-14 DOI: 10.1007/s10570-025-06690-w
Saba Karimi, Sezen Yucel, Robert J. Moon, Linda J. Johnston, Nathan J. Bechle, Warren Batchelor, Jae-Young Cho, Surya R. Kalidindi
{"title":"A semi-automatic workflow for atomic force microscopy image analysis and cellulose nanocrystal particle size measurements","authors":"Saba Karimi,&nbsp;Sezen Yucel,&nbsp;Robert J. Moon,&nbsp;Linda J. Johnston,&nbsp;Nathan J. Bechle,&nbsp;Warren Batchelor,&nbsp;Jae-Young Cho,&nbsp;Surya R. Kalidindi","doi":"10.1007/s10570-025-06690-w","DOIUrl":"10.1007/s10570-025-06690-w","url":null,"abstract":"<div><p>The reliable measurement of cellulose nanocrystal (CNC) particle morphology is vital for ongoing CNC production optimization and application development. A semi-automatic image analysis program, SMART-AFM, was developed for CNC particle size measurements from atomic force microscopy (AFM) images and subsequently used to analyze the AFM images acquired from four laboratories that participated in the interlaboratory comparison (ILC) study by Bushell et al.<i>.</i> SMART-AFM demonstrated a 40 times faster analysis compared to the manual approach used in the ILC. A detailed image-to-image analysis showed that SMART-AFM produced similarly accurate results as compared to the manual method for CNC identification, as well as length and height measurements. SMART-AFM “correctly” identified CNCs 82–90% and manual analysis identified 83–94%, depending on the given laboratory image dataset. While SMART-AFM reported mean length values consistently 7–16.5% lower than the manual approach—attributed to trimming CNC tails during segmentation—CNC height measurements were in closer agreement—an average difference of 4.2%. Moreover, SMART-AFM CNC identification and measurement demonstrated lower variability across images from different laboratories, potentially indicating higher identification consistency compared to the subjective and qualitative nature of manual analysis. The strengths and challenges of SMART-AFM in analyzing images affected by AFM imaging artifacts is systematically studied. An analysis is presented to reaffirm the importance of measuring 300–500 CNCs to ensure a representative, reliable measurement results. Overall, SMART-AFM is established as a standardized CNC identification and measurement tool, with improved speed compared to the manual alternative, and proven consistency and reliability. The SMART-AFM code is publicly available in Github™.</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 13","pages":"7535 - 7552"},"PeriodicalIF":4.8,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011810","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
Catalytic synthesis of 5-hydroxymethylfurfural from glucose-based carbohydrates via assembled bifunctional SBA-15 mesoporous silica catalysts 装配双功能SBA-15介孔硅催化剂催化葡萄糖基碳水化合物合成5-羟甲基糠醛
IF 4.8 2区 工程技术
Cellulose Pub Date : 2025-08-13 DOI: 10.1007/s10570-025-06699-1
Wanni Liu, Xian Shi, Dongqi Liu, Xinyi Xing, Mengya Ruan, Song Sun, Gaojin Lyu, Siquan Xu
{"title":"Catalytic synthesis of 5-hydroxymethylfurfural from glucose-based carbohydrates via assembled bifunctional SBA-15 mesoporous silica catalysts","authors":"Wanni Liu,&nbsp;Xian Shi,&nbsp;Dongqi Liu,&nbsp;Xinyi Xing,&nbsp;Mengya Ruan,&nbsp;Song Sun,&nbsp;Gaojin Lyu,&nbsp;Siquan Xu","doi":"10.1007/s10570-025-06699-1","DOIUrl":"10.1007/s10570-025-06699-1","url":null,"abstract":"<div><p>Converting glucose-based carbohydrates such as microcrystalline cellulose and cellulose components in lignocellulose into 5-hydroxymethylfurfural (HMF) is a feasible way to achieve high-value utilization of biomass. To this end, this work assembled a series of bifunctional (x)Hf/SBA-15-S catalysts by introducing active hafnium species and grafting sulfonic acid groups onto the mesoporous SBA-15 silica carrier to drive the conversion of glucose, cellulose and untreated wheat straw into HMF. Through detailed parameter evaluation, competitive HMF yields were achieved from glucose (74%) and cellulose (51%), respectively. More importantly, the cellulose and hemicellulose components in untreated wheat straw could be efficiently converted simultaneously to obtain HMF and furfural with yields of 50 and 30%, respectively. Systematic characterization revealed that (x)Hf/SBA-15-S catalysts had an ordered pore channel, bifunctional acidity and good hydrothermal stability, which were beneficial to the process of cellulose undergoing depolymerization, isomerization and dehydration to produce HMF. Therefore, it is believed that the catalytic transformation strategy presented in this study has application prospects for realizing the utilization of glucose-based carbohydrates.</p></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 13","pages":"7631 - 7646"},"PeriodicalIF":4.8,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011801","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
Designing TiO2-doped photothermal microcapsules via a novel green synthesis Pickering emulsion complex coacervation method and their application to cotton fabrics for thermal protective fabric 采用新型绿色合成Pickering乳液络合法设计tio2掺杂光热微胶囊及其在棉织物热防护织物上的应用
IF 4.8 2区 工程技术
Cellulose Pub Date : 2025-08-12 DOI: 10.1007/s10570-025-06710-9
Sena Demirbağ Genç
{"title":"Designing TiO2-doped photothermal microcapsules via a novel green synthesis Pickering emulsion complex coacervation method and their application to cotton fabrics for thermal protective fabric","authors":"Sena Demirbağ Genç","doi":"10.1007/s10570-025-06710-9","DOIUrl":"10.1007/s10570-025-06710-9","url":null,"abstract":"<div><p>This paper presents the production of nano titanium dioxide (TiO<sub>2</sub>)-doped n-tetradecanol/sodium alginate/chitosan microcapsules using a novel environmentally friendly method, capable of converting sunlight into thermal energy. It also explores the potential of these microcapsules to be used as a component in thermal protective fabrics for clothing. In the study, unlike the literature, microcapsule production was carried out by integrating eco-friendly Pickering emulsion with complex coacervation method, which has ecological properties. n-Tetradecanol containing sodium alginate/chitosan walled microcapsules were produced by Pickering emulsion complex coacervation method using TiO<sub>2</sub> Pickering stabilizer. Microcapsules were produced using three different concentrations of Pickering stabilizers (0.1–0.3–0.5 wt%); the highest heat storage capacity with 192.9 J/g was obtained at 0.1% wt. To impart photothermal properties to these microcapsules, TiO<sub>2</sub> was deposited on the surface of the microcapsules at three different ratios (3,4,5 wt%). Spherical microcapsules with good leak-proofing were found to store heat in the range of 104.6–165 J/g and exhibited good photothermal conversion performance with photothermal conversion efficiency ranging from 65.95 to 90.81%. Microcapsules doped with 5% TiO<sub>2</sub> were applied to cotton fabric at two different concentrations by pad-dry cure method. The fabric including microcapsules exhibited photothermal properties, reaching temperatures up to 6.6 °C higher than the untreated fabric within the same period. The addition of TiO<sub>2</sub>-doped microcapsules to the fabric significantly increased its thermal conductivity. In contrast, microcapsule application had a significant effect on the air permeability, bending rigidity and warp tear strength of the fabric.</p></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 13","pages":"7989 - 8013"},"PeriodicalIF":4.8,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011749","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
Using natural products in contemporary fabric design: a critical review of trends, innovations, and future prospects (2019–2024) 在当代织物设计中使用天然产品:对趋势、创新和未来前景的批判性回顾(2019-2024)
IF 4.8 2区 工程技术
Cellulose Pub Date : 2025-08-12 DOI: 10.1007/s10570-025-06700-x
Asmaa A. H. El-Bassuony, Abeer F. Ibrahim, H. K. Abdelsalam
{"title":"Using natural products in contemporary fabric design: a critical review of trends, innovations, and future prospects (2019–2024)","authors":"Asmaa A. H. El-Bassuony,&nbsp;Abeer F. Ibrahim,&nbsp;H. K. Abdelsalam","doi":"10.1007/s10570-025-06700-x","DOIUrl":"10.1007/s10570-025-06700-x","url":null,"abstract":"<div><p>The global textile industry’s significant environmental footprint has catalyzed a resurgence in the use of natural products as a sustainable alternative to synthetic chemicals. This paper presents a systematic and critical review of the trends and innovations in fabric design using natural products, focusing on peer-reviewed literature published between January 2019 and June 2024. The review holistically examines three key domains: the application of natural dyes from diverse biological sources, the development of functional finishes for properties like antimicrobial activity and UV protection, and the rise of biomimicry and bio-integrated design. Significant progress is identified in enhancing performance through advanced extraction methods, the use of bio-mordants, and nano-encapsulation techniques that improve durability. However, the field faces persistent challenges in colorfastness, reproducibility, scalability, and cost-competitiveness. This review critically evaluates these innovations using a Technology Readiness Level (TRL) framework to distinguish between laboratory-scale research and commercially viable applications. We conclude that while natural products offer a compelling pathway toward a circular textile economy, bridging the gap between current potential and widespread industrial adoption requires targeted, interdisciplinary research focused on standardization, process optimization, and developing robust, durable application technologies.</p></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 13","pages":"7485 - 7499"},"PeriodicalIF":4.8,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10570-025-06700-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011735","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
Revisiting the fiber gel point concentration model: from the perspective of flexibility and external fibrillation 重新审视纤维凝胶点浓度模型:从柔韧性和外颤的角度
IF 4.8 2区 工程技术
Cellulose Pub Date : 2025-08-12 DOI: 10.1007/s10570-025-06689-3
Hongjie Fan, Leiming Zhao, Hongjie Zhang, Xiyue Xue, Wen-Hui Zhang
{"title":"Revisiting the fiber gel point concentration model: from the perspective of flexibility and external fibrillation","authors":"Hongjie Fan,&nbsp;Leiming Zhao,&nbsp;Hongjie Zhang,&nbsp;Xiyue Xue,&nbsp;Wen-Hui Zhang","doi":"10.1007/s10570-025-06689-3","DOIUrl":"10.1007/s10570-025-06689-3","url":null,"abstract":"<div><p>The gel point concentration model has seen significant success in industrial applications such as headbox optimization and predicting the length of high aspect ratio micro and nanoscale fibers. However, traditional models based on crowding number theory or effective medium theory exhibit significant inaccuracies when applied to highly refined pulps, primarily due to their neglect of key morphological properties: external fibrillation degree (<i>D</i>) and fiber flexibility (<i>F</i>). This study systematically investigates how these properties, alongside aspect ratio (<i>A</i>), modulate the gel point concentration (<i>C</i><sub><i>g</i></sub>) in bleached softwood kraft pulp and bleached bamboo kraft pulp. Experimental results reveal that <i>C</i><sub><i>g</i></sub> decreases with increasing external fibrillation degree or fiber flexibility, driven by distinct mechanisms: external fibrillation enhances the specific surface area of fibers and the number of fiber contacts, promoting the formation of fiber network; increased flexibility reduces fiber elastic modulus, enabling more deformable and extensive fiber–fiber interactions. To address these gaps, we developed an improved predictive model incorporating <i>A</i>, <i>D</i>, and <i>F</i>: <span>(C_{g} = 7.488 times 10^{14} A^{ - 2.109} F^{ - 1.004} D^{ - 0.053})</span> (30 &lt; <i>A</i> &lt; 70, 0 &lt; <i>D</i> &lt; 20%, 5 × 10<sup>1</sup>⁰ N⁻<sup>1</sup> m⁻<sup>2</sup> &lt; <i>F</i> &lt; 3 × 10<sup>11</sup> N⁻<sup>1</sup> m⁻<sup>2</sup>, <i>R</i><sup>2</sup> = 0.954) which significantly outperforms traditional models. Notably, Sensitivity analysis further showed that the effect of external fibrillation is negligible (exponent = −0.053), justifying its exclusion in a simplified model yet robust model: <span>(C_{g} = 1.617 times 10^{16} A^{ - 2.036} F^{ - 1.141})</span> (<i>R</i><sup>2</sup> = 0.950). These findings establish fiber flexibility as a critical determinant of C<sub>g</sub>, on par with aspect ratio—a key insight absent in conventional frameworks. The proposed models provide a mechanistic basis for predicting gel point concentration in refined fiber suspensions, enabling more accurate optimization of papermaking and nanomaterial processing applications.</p></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 13","pages":"7619 - 7629"},"PeriodicalIF":4.8,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011737","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
Impact of mechanical refining and silane treatment on microfibrillated cellulose-reinforced polypropylene: mechanical, thermal, and hygrothermal performance 机械精炼和硅烷处理对微纤化纤维素增强聚丙烯的影响:机械、热和湿热性能
IF 4.8 2区 工程技术
Cellulose Pub Date : 2025-08-11 DOI: 10.1007/s10570-025-06708-3
Kunwu Guo, Zhen Huang, Chunjie Ye, Lexiang Wang, Hongzhi Liu
{"title":"Impact of mechanical refining and silane treatment on microfibrillated cellulose-reinforced polypropylene: mechanical, thermal, and hygrothermal performance","authors":"Kunwu Guo,&nbsp;Zhen Huang,&nbsp;Chunjie Ye,&nbsp;Lexiang Wang,&nbsp;Hongzhi Liu","doi":"10.1007/s10570-025-06708-3","DOIUrl":"10.1007/s10570-025-06708-3","url":null,"abstract":"<div><p>Microfibrillated cellulose (MFC) were prepared by different mechanical refining parameters and subsequently modified with 3-aminopropyltriethoxysilane (APTES) and hexadecyltrimethoxysilane (HDTMS), respectively. Effects of silane modification and mechanical refining parameters of MFC on the performance of MFC-reinforced polypropylene composites (PP/MFC) were systematically investigated. Mechanical properties, thermal characteristics, and hygrothermal durability of the PP/MFC composites were analyzed. Results reveal that an increase in refining cycle and pulp consistence can promote fibrillation, dimensional reduction, and enhanced water retention capacity of MFC. Notably, tensile and flexural properties of PP/MFC decreased with increasing refining cycles and pulp consistence. After the silylation of MFC, the APTES-treated MFC showed superior reinforcing efficiency compared to HDTMS-treated MFC. In contrast, the PP composite reinforced with HDTMS-treated MFC (PP/HDTMS-10W5P) exhibited superior hygrothermal performance than that of PP/APTES-10W5P one. Moreover, the silane treatments were further contributed to an increase of crystallinity and thermal stability due to the enhanced interfacial adhesion between MFC and PP. This work provided critical insights into tailoring PP/MFC composites in engineering applications.</p></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 13","pages":"7603 - 7617"},"PeriodicalIF":4.8,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011727","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