CARBOHYDRATE POLYMERS
·
2018
·
IF 5.158
Xiaohui Ni,Wanli Cheng,Siqi Huan,Dong Wang,Guangping Han
An electrospinning process was utilized to fabricate composite nanofibers of poly(methyl methacrylate) (PMMA) reinforced with cellulose nanocrystals (CNCs). The effect of environmental relative humidity on the microstructure of CNC/PMMA nanofibers was investigated. Results showed that fiber surfaces of CNC/PMMA appeared smooth. Fibers had gradually decreasing diameters and lower diameter variations as CNC loading increased. The thermal property of CNC/PMMA nanofibers was also enhanced due to hydrogen bonding between PMMA molecular chains and CNC nanoparticles. Compared to pure PMMA fibers, the storage modulus and tensile strength of composite nanofibers were pronouncedly improved. By increasing relative humidity of the electrospinning environment, these nanofibers showed prominent nanoporous surfaces while the surface roughness and porosity of CNC/PMMA nanofibers increased. Furthermore, CNCs were critical to accelerating the evolution of pores and increasing surface roughness. Our findings can provide useful guidelines for the fabrication of nanofibers with desired properties and pore structure by electrospinning.
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2017
·
IF 7.504
Dawei Zhao,Qi Zhang,Wenshuai Chen,Xin Yi,Shouxin Liu,Qingwen Wang,Yixing Liu,Jian Li,Xianfeng Li,Haipeng Yu
Recent improvements in flexible electronics have increased the need to develop flexible and lightweight power sources. However, current flexible electrodes are limited by low capacitance, poor mechanical properties, and lack of cycling stability. In this article, we describe an ionic liquid-processed supramolecular assembly of cellulose and 3,4-ethylenedioxythiophene for the formation of a flexible and conductive cellulose/poly(3,4-ethylenedioxythiophene) PEDOT:poly(styrene sulfonate) (PSS) composite matrix. On this base, multiwalled carbon nanotubes (MWCNTs) were incorporated into the matrix to fabricate an MWCNT-reinforced cellulose/PEDOT:PSS film (MCPP), which exhibited favorable flexibility and conductivity. The MCPP-based electrode displayed comprehensively excellent electrochemical properties, such as a low resistance of 0.45 Ω, a high specific capacitance of 485 F g–1 at 1 A g–1, and good cycling stability, with a capacity retention of 95% after 2000 cycles at 2 A g–1. An MCPP-based symmetric solid-state supercapacitor with Ni foam as the current collector and PVA/KOH gel as the electrolyte exhibited a specific capacitance of 380 F g–1 at 0.25 A g–1 and achieved a maximum energy density of 13.2 Wh kg–1 (0.25 A g–1) with a power density of 0.126 kW kg–1 or an energy density of 4.86 Wh kg–1 at 10 A g–1, corresponding to a high power density of 4.99 kW kg–1. Another kind of MCPP-based solid-state supercapacitor without the Ni foam showed excellent flexibility and a high volumetric capacitance of 50.4 F cm–3 at 0.05 A cm–3. Both the electrodes and the supercapacitors were environmentally stable and could be operated under remarkable deformation or high temperature without damage to their structural integrity or a significant decrease in capacitive performance. Overall, this work provides a strategy for the fabrication of flexible and conductive energy-storage films with ionic liquid-processed cellulose as a medium.
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高影响因子
RSC Advances
·
2015
·Vol. 5
·期 100
·82027-82033
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IF 3.84
Runjun Lin,Ang Li,Tingting Zheng,Lingbin Lu,Yang Cao
Adsorbent materials as well as hydrophobic modification methods have been at the forefront of research creating environmentally hazardous waste. Herein, we report a facile, green preparation method for cellulose aerogels. Cold plasma technology was employed for hydrophobic modification of the aerogel surface using trimethyl-chlorosilane (TMCS) as the plasma. Notably, the modification procedure was considerably more rapid (less than 3 min), more efficient and economically viable than traditional methods. The highly flexible modified cellulose aerogels are hydrophobic (ca. 150°), oleophilic and ultralight (as low as 0.0196 g cm−3). Compared to conventional oil adsorbent materials, these low-cost, environment-friendly cellulose aerogels exhibit excellent adsorption properties (peanut oil, 34.5 g g−1) as well as remarkable reusability (more than 15 times). Therefore, the preset work would play a significant role in further advancing the fields of adsorbent materials and hydrophobic modification methods.
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高影响因子
Polymers
·
2019
·Vol. 11
·期 8
·1281
·
IF 3.164
Mingjing Shan,Chang Liu,Lei Shi,Lei Zhang,Yuan Lin,Shuo Zhang,Zhenjun Zhu,Xiaoyin Wang,Xupin Zhuang
Antibacterial viscose cellulose sponges (VCSs) were fabricated by heating cellulose xanthogenate (viscose) containing HAuCl4·nH2O. Viscose was used as the reducing agent and stabilizer for the in situ synthesis of Au nanoparticles (AuNPs) onto the VCSs. The morphology, structures, thermal properties, mechanical performance, and antibacterial activities of the sponges were investigated. Results indicate that AuNPs were uniformly immobilized in the VCSs, and the resulting complexes (AuNPs@VCSs) showed enhanced thermal stability and mechanical properties. Additionally, the AuNPs@VCSs exhibited remarkable antibacterial activities, with zone of inhibition diameter of 35.7 and 37.1 mm forStaphylococcus aureusandEscherichia coli, respectively. The process is simple and applicable at the industrial level and can be applied to the fields of cleaning and sanitation.
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高影响因子
CELLULOSE
·
2018
·Vol. 25
·期 11
·6395-6404
·
IF 3.809
Yuan Wei,Wu Kaijian,Liu Na,Zhang Yumei,Wang Huaping
Cellulose diacetate (CA) was successfully dissolved in N-methylmorpholine N-oxide aqueous solution (NMMO·H 2 O). The CA degraded little during the dissolving process and the homogenous CA/NMMO·H 2 O solutions were obtained even when the concentration was up to 18%. From the rheological behavior of the CA/NMMO·H 2 O solution, it was found that the viscosity of the solution was lower than that of lyocell solution, which is due to the lower degree of polymerization and the substitute of acetyl group.
Then CA fibers were prepared by dry-jet wet spinning process. The tenacity and the E-modulus of the regenerated CA fibers were up to 3.0 cN/dtex and 75 cN/dtex respectively, and the former was larger than that of industrial CA fibers prepared by dry spinning process. This is related to the structure of the CA fibers, because the crystallinity, crystal orientation of the fibers can be improved by high draw ratio during dry-jet wet spinning process. Otherwise, the CA fibers showed no fibrillation tendency, which showed improved wearing comfort compared to lyocell fibers. This work provided an effective way to produce new CA fibers with higher tensile strength. Graphical abstract
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高影响因子
CARBOHYDRATE POLYMERS
·
2026
·
IF 13.2
Zhaofeng Wang,Qun Ding,Wenquan Yu,Xiuyu Shen,Haofeng Yu,Pan Liu,Siqi Huan,Zhiguo Li,Yang Liu
Developing cellulose-based bioplastics that combine mechanical robustness, self-healing, and reprocessability remains challenging because the dense hydrogen-bonded structure of cellulose provides cohesion but restricts the chain mobility required for interfacial reconstruction. Here, we report a side-group engineering strategy that balances these competing requirements by integrating flexible long aliphatic chains, metal-responsive aromatic groups, and Zn 2+ -mediated reversible interactions within a single cellulose-derived network. To implement this strategy, indole-3-acetic acid and oleic acid were sequentially grafted onto cellulose, followed by the introduction of Zn 2+ to construct reversible dynamic junctions. The long aliphatic chains disrupted ordered chain packing and promoted molecular rearrangement, whereas the indole-derived aromatic groups enabled reversible network reconstruction. At an aromatic-group-to-Zn 2+ molar ratio of 10:1, the resulting bioplastic achieved a tensile strength of 18.31 MPa and a tensile-strength healing efficiency of 92.14% after DMAc-assisted interfacial wetting followed by thermal treatment at 80 °C for 2 h. After four reprocessing cycles, it retained a tensile strength of 18.27 MPa and a tensile-strength healing efficiency of 90.53%. These results demonstrate that synergistically regulating chain mobility and reversible cohesion is an effective molecular design strategy for constructing mechanically robust, self-healing, and reprocessable cellulose-based bioplastics. Download: Download high-res image (123KB) Download: Download full-size image
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高影响因子
COLLOID AND POLYMER SCIENCE
·
2026
·
IF 2.9
Giang Ha Ngoc,Truong Dung Thi Phuong,Tran Tien Le Hoang My,Nguyen Nhi Ngoc Thao,Van Hoang Thanh,Van Bui Hoai,Dang Cuong Xuan,Tien Nam Tien,Nguyen Hoa Ngoc,Nguyen Hoan Xuan
Cellulose nanocrystals (CNCs) have been successfully synthesized using carboxymethyl cellulose via hydrolysis with 40% H 2 SO 4 . The fabricated CNCs showed a round shape and relatively low crystallinity (~ 45%), which might be associated with the original cellulose II source. The redispersibility in water could be significantly improved via dialysis with NaOH solution (1 M). The current CNCs could be completely redispersed into water with a concentration up to 1 wt%, even without any sonication steps or high-energy mixing approaches. The particle size of the obtained CNCs ranged from 50 to 60 nm. The negatively charged carboxylate groups in the CNCs structure after NaOH treatment might contribute to the dispersibility and large zeta potential. Essential oil extracted from Piper betle L. leaves (with eugenol ~ 44%, chavibetol acetate ~ 12%, γ-terpinene and β-guaiene ~ 10%, (-)-β-cadinene and 4-allyl-1,2-diacetoxylbenzene ~ 8%) could form the nanoemulsion with the Z-average of 14.5 nm by using Tween 80. However, the stability for long-term storage could not be ensured. The addition of sodium carboxymethyl cellulose (NaCMC) highly increased the viscosity, and the particle size was up to 225 nm. In contrast, the use of the fabricated CNCs (0.1 wt%) for Tween 80-based emulsion showed little change in viscosity but maintained particle size of ~ 54 nm for nearly a month. Enhanced stability could be assigned for the strong ionic repulsion based on the result of zeta potential that could reach − 35 mV. Graphical abstract
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高影响因子
CARBOHYDRATE POLYMERS
·
2026
·
IF 13.2
Yunduo Ban,Yanjun Liu,Wenjing Lu,Xianglei Bai,Xia Dong
The hierarchical pore architecture of cellulose plays a critical role in regulating molecular accessibility and transport under wet conditions. However, the coupled effects of pore structure and interfacial interactions on diffusion behavior remain unclear. In this study, time-domain nuclear magnetic resonance (TD-NMR) was employed to quantitatively characterize wet-state pore structures of cotton fibers subjected to different chemical treatments, complemented by SEM, XRD, and FTIR analyses. The results reveal distinct structural evolution pathways: mercerization enlarges pore size and enhances accessibility, whereas liquid ammonia treatment refines the pore network by increasing smaller pores and reducing larger channels. Diffusion experiments using probe molecules of different sizes demonstrate that transport behavior is determined by a coupled mechanism involving pore size distribution, connectivity, and interfacial interactions. Enlarged pore-size distributions facilitate molecular transport, while refined pore networks impose size-selective diffusion limitations, particularly for larger molecules. Following TEMPO-mediated oxidation and polyethyleneimine (PEI) modification, a trade-off between enhanced molecular affinity and increased diffusion resistance is observed. These findings establish a structure–transport relationship in cellulose fibers and provide insight into diffusion behavior in cellulose-based fibrous materials.
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产品关联
DOI
PubMed
高影响因子
POLYMER
·
2026
·
IF 5.1
Shang Peng,Zhaonan Wang,Ding Huang,Kangjie Zhou,Yong Liu,Fan Cheng,Hai Liu
Cellulose nanofiber (CNF) aerogels are promising sustainable porous materials, but their mechanically weak sheet-like networks and intrinsic flammability limit practical deployment under demanding conditions. Herein, we report a minimal-polymer interfacial densification strategy that uses only approximately 2 wt% aramid nanofibers (ANFs) to reinforce and fire-protect CNF aerogels. Through an in situ sol–gel–coating process, the ANF sol is converted into a compact interfacial coating on CNF sheets, yielding a hierarchical ANF–CNF–ANF sandwich skeleton that stabilizes weak inter-sheet junctions while preserving the ultralight porous structure. This optimized skeleton endows the aerogel with a compressive strength of 219 kPa and a modulus of 618 kPa, corresponding to 2.6- and 15-fold improvements over pristine CNF aerogel, respectively, while maintaining a low thermal conductivity of 37.1 mW m −1 K −1 . The ANF-modified aerogel also exhibits self-extinguishing behavior, an increased limiting oxygen index, and reduced heat and smoke release, demonstrating improved fire resistance. This study provides a facile minimal-polymer interfacial engineering route for developing mechanically robust, fire-safe, and thermally insulating bio-based aerogels.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Xiangyu Li,Haiyang Gong,Jinyan Wang,Junyang Li,Yunxue Liu,Yunwu Yu,Ning Tang,Yaxin Gu,Lihua Wang,Peng Liu
Aerogels, as archetypal ultralight porous materials, exhibit great potential in thermal insulation and functional materials owing to their extremely low thermal conductivity and high specific surface area. However, conventional silica aerogels (SA) suffer from structural brittleness due to the rigid inorganic skeleton, limiting their use in flexible or deformation-prone environments. To address this issue, we propose a cooperative enhancement strategy using cellulose nanofibers (CNF) and waterborne polyurethane (WPU) to construct a composite silica aerogel. This approach forms a “rigid–flexible complementary” three-dimensional network, where CNF provides flexible support and WPU enhances interfacial adhesion and energy dissipation. Compared with conventional polymer-reinforced aerogels, this strategy improves organic–inorganic interfacial interactions at the nanoscale, leading to enhanced mechanical robustness and stress transfer efficiency. The resulting composite aerogel achieves a low thermal conductivity of 0.02555 W·m −1 ·K −1 , a high compressive strength of 221.7 kPa, stable fatigue resistance over 200 cycles, and a fast strain response time of 43 ms. This study offers a novel design paradigm for high-toughness thermal insulation aerogels and lays a material foundation for their practical applications in flexible insulation and high-temperature sensing fields.
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高影响因子
Catalysts
·
2026
·Vol. 16
·期 7
·613
·
IF 4.5
Xin Wang,Yunkai Zhou,Qingsong Wang,Dongxue Liang,Wenjia Li,Zhou Zhang,Mingqiang Zhu,Jia Wang
Hydrolysis of cellulose to produce ethanol has become an effective way to utilize biological resources, but its large-scale industrial application has been limited. In this study, a one-pot catalytic conversion process for transforming cellulose into ethanol was developed. Meanwhile, multifunctional Mo/Pt/WOx/Al2O3catalysts were prepared by loading nano-alumina (Nano-Al2O3) via a stepwise impregnation method. The influence of catalysts with varying metal ratios on the types of products generated during the cellulose hydrolysis process to ethanol was examined. The catalyst with 0.1% Mo, 2% Pt, and 7.5% W loadings showed the best selectivity. With an ethanol yield of 45.3% after heating at 5 MPa H2and 518 K for 2 h. Nano-Al2O3can provide suitable active sites. The addition of W5+and Mo0increased the surface oxygen vacancy density and enhanced the hydrodeoxidation and metal anchoring capacity of the catalyst. The solid solution structure facilitates electron transfer from W and Mo atoms to Pt atoms, forming electron-rich Ptδ-species, promoting the hydrolysis of cellulose and the formation of ethanol.
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DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.7
Guozhen Wang,Dan Cai,Shunchao Zhou,Guoyong Xu,Xianhui Chang,Xiaogang Luo,Wenping Ding
Sustainable carboxylated rice bran cellulose nanocrystals (CCNC) were synthesized via citric acid hydrolysis. • KGM-CCNC films exhibit significantly improved mechanical strength, water solubility and water- and oxygen-barrier properties. • Anthocyanin-KGM-CCNC composite film serves as a freshness indicator for the real-time monitoring of pork freshness. Food packaging indicator films are key active-intelligent materials for food preservation and quality monitoring. Natural polysaccharides like konjac glucomannan (KGM) have good film-forming and biodegradable properties but suffer from poor mechanical strength, limiting their food packaging applications. Herein, rice bran carboxylated cellulose nanocrystals (CCNC) were prepared via green citric acid hydrolysis and characterized for chemical structure, crystallinity and thermal stability. CCNC-KGM composite films were then fabricated, with morphology, mechanical properties, water vapor/oxygen barrier performance and surface wettability tested systematically. The film with 1% CCNC showed optimal mechanical properties and minimal water solubility. By incorporating pH-responsive anthocyanins, the composite film achieved visual pork freshness monitoring via color changes. At 4°C, the indicator film containing 0.25 grams of anthocyanin has the best preservation effect on pork. This study developed high-performance intelligent packaging films using rice bran cellulose, laying a critical foundation for advancing natural polysaccharide-based smart packaging materials. Rice bran was sequentially defatted to remove lipids and alkaline-treated to eliminate proteins, followed by further alkaline treatment and bleaching to extract purified cellulose through removal of lignin and hemicellulose. The amorphous regions of this purified cellulose were then selectively degraded via citric acid hydrolysis, producing needle-like carboxylated cellulose nanocrystals (CCNC). The CCNC was subsequently incorporated as a reinforcing phase into a konjac glucomannan (KGM) matrix, with the resulting composite being fabricated into food packaging films using solution-casting methodology. Download: Download high-res image (137KB) Download: Download full-size image
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高影响因子
危险品化学品经营许可证（带存储）