ACS Applied Nano Materials
·
2022
·
IF 6.14
Boshi Yu,Zhenyu Zhang,Wei Liu,Fei Liu,Juncheng Huang,Haining Na,Jin Zhu
A hydroxyl-enriched core/shell structured carbon nanotube (CNT/C-OH) is prepared by the method of hydrothermal carbonization (HTC) as a catalytic accelerator to induce highly efficient hydrolysis of regenerated cellulose to glucose. By use of sonication with high sound intensity, the carbon source (namely glucose) is homogeneously dispersed with CNT to form a colloid. Accordingly, a high-quality CNT/C-OH with a hydroxyl-enriched coating layer is produced in the following HTC. The oxygen mass content of the shell is up to 16.38%. A great deal of hydroxyl groups contribute to the CNT/C-OH having a strong affinity to adsorb with the regenerated cellulose and thus to enhance its hydrolytic ability to convert to sugar. In a low-acid aqueous system with CNT/C-OH, the cellulose conversion and the glucose yield reach 94.62 and 78.82%, respectively. A good reusability of CNT/C-OH is also found in multiple steps of hydrolysis of the regenerated cellulose to sugar.
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DOI
高影响因子
CELLULOSE
·
2017
·Vol. 24
·期 10
·4189-4203
·
IF 3.417
Zhang Xiuqiang,Zhang Jinlong,Dong Lili,Ren Suxia,Wu Qinglin,Lei Tingzhou
We report a series of thermoresponsive cellulose nanocrystals (CNCs) decorated with poly(poly(ethylene glycol) methylacrylate) copolymers (poly(PEGMA)- g -CNCs) synthesized by surface initiated-atom transfer radical polymerization (SI-ATRP). The chemical structures and surface morphologies were subsequently confirmed by FT-IR, XPS, and AFM measurements. With regard to thermally responsive behavior, poly(PEGMA)- g -CNCs show tunable lower critical solution temperature (LCST) values in the range of 34–66 °C by varying the feeding ratios of comonomers. The reversible morphological transformation from individual nano-rod structures to larger globule aggregates was further verified by AFM during the LCST transition. These functionalized CNCs have potential as smart film filters and biosensors.
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高影响因子
CARBOHYDRATE POLYMERS
·
2019
·
IF 6.044
Baoxia Wang,Jiangjun Zhou,Zixuan Wang,Shiling Mu,Rong Wu,Zhongkai Wang
The preparation of high-performance cellulose nanocrystals (CNCs)/plant oil-derived polymer composites is still a challenge, due to their poor compatibility. Here, by designing amide groups and epoxy groups on sunflower oil derived polymers, appropriate interfacial hydrogen bond interactions between the polymers and CNCs were constructed, where CNCs were homogenously dispersed in polymer matrix. Tensile tests and DMA results revealed that the incorporation of CNCs into sunflower oil derived epoxy polymers significantly enhanced the tensile strength and storage modulus. More importantly, nanocomposites with 50 wt% CNCs are still hydrophobic, which not only show a fast and reversible humidity induced modulus switch, but also exhibit high wet strength (19.9 MPa) after equilibrium water adsorption. The present work revealed that proper designed CNCs/plant oil polymer nanocomposites are good candidates for high performance and functional materials, which are able to replace petroleum-based materials in various fields.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2017
·Vol. 134
·期 42
·45387
·
IF 1.86
Xiaofei Dang,Xinyu Cao,Linnan Ke,Yongmei Ma,Jingjing An,Fosong Wang
In this study, nanofiber cellulose (NFC) based on a 2,2,6,6-tetramethylpiperidine-1-oxyl radical oxidization method was successfully combined with chain-end-functionalized polyethylene containing alkoxysilane via silanization. Fourier transform infrared spectroscopy, transmission electron microscopy, contact angle measurements, Molau tests, and X-ray photoelectron spectroscopy analyses provided further evidence for the effectiveness of the surface modifications. The hydrophilic surface characteristics of NFC were changed to apparently hydrophobic for the modified nanofiber cellulose (M-NFC). Then, the linear low-density polyethylene (LLDPE)/M-NFC nanocomposite was prepared, and the mechanical properties, thermal properties, and crystallization properties of the LLDPE–M-NFC were investigated by tensile testing, thermogravimetric analysis, differential scanning calorimetry, and dynamic mechanical analysis. The results show that after modification, the thermal stability of NFC was enhanced. The interface between M-NFC and the matrix was good. The tensile strength and Young's modulus values of the nanocomposites were enhanced compared with those of LLDPE; in particular, the tensile strength and Young's modulus of the blend with 5 wt % M-NFC increased by 56 and 106%, respectively. The storage modulus of the nanocomposites was enhanced obviously over a wide temperature range. The addition of a small amount of M-NFC had slight effects on the crystallinity and melting temperature of LLDPE. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 45387.
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高影响因子
CARBOHYDRATE POLYMERS
·
2020
·
IF 7.182
Denan Kong,Qunchao Zhang,Jun You,Yuanyuan Cheng,Cheng Hong,Zihe Chen,Tao Jiang,Tonghui Hao
Adhesion loss of hydrocolloid wound dressings is ubiquitous clinical problem, which seriously reduces the therapeutic efficiency and patient experience. In order to address this problem, the clarification on adhesion loss mechanism and the development of effective alternatives of commercial hydrocolloid dressings are urgent and inevitable. Herein, adhesion loss mechanism of hydrocolloid dressings was investigated using sodium carboxymethyl cellulose (CMC)-filled hydrocolloid dressings exposing to physiological environment as model. The adhesion mechanism and contact angle tests were combined to obtain surface energy of dressings. The results indicated that the dissolution, swelling and exudation of CMC occurred successively (concentration reached 1.607 g/L after 10 h). The effused CMC led to the dramatic increase in surface energy (from 14.5–80.7 mN/m) and adhesion loss appeared. This work explored the origin of adhesion loss of hydrocolloid wound dressings and might promote the designing of hydrocolloid dressings with both excellent humidity control and sustained self-adhesiveness.
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高影响因子
ACS Sustainable Chemistry & Engineering
·
2016
·
IF 5.267
Jiang Deng,Tianyi Xiong,Haiyan Wang,Anmin Zheng,Yong Wang
Porous carbon materials stemming from biomass have drawn increasing interest because of their sustainable properties. Cellulose, hemicellulose, and lignin are the three basic components of crude biomass, and were investigated to reveal their influence on the derived carbonaceous materials. Huge amounts of oxygen-containing functional groups in cellulose and hemicellulose tend to be eliminated as H2O, CO2, and CO and give micropores during pyrolysis, whereas lignin contains plentiful aromatic units which are chemically inert, and thus produce nonporous carbon materials. When the KHCO3 was introduced during the pyrolysis process, the plentiful hydroxyl in cellulose and hemicellulose underwent dehydration condensation among different parent polymers, which are responsible for the formation of macroporous structure. By contrast, The β-O-4 bands in lignin experience homolysis and give rise to benzene-containing units, which finally result in carbon nanosheets. Furthermore, we demonstrated the mixture of cellulose, hemicellulose, and lignin can display a three-dimensional porous structure (containing macropores, mesopores, and micropores) when less than 50% of lignin is contained.
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高影响因子
Journal of Bioresources and Bioproducts
·
2025
·
IF 13
Ruotong Yao,Chao Wang,Yunli Xu,Min Wu
In recent years, there has been a growing interest in the development of cellulose or nanocellulose (CNF) materials in food packaging industry due to their green and processable nature, while the inherent hydrophilicity of cellulose presents significant challenges in meeting the high barrier requirements essential for food packaging applications. In this study, a dual strategy of internal cross-linking and external functional coating was employed to fabricate high-barrier nanocellulose-based packaging. Dialdehyde CNF (DCNF) was incorporated into pristine CNF to form a dense cross-linking network containing hemiacetal linkages and hydrogen bonds. Additionally, an ethyl cellulose (EC)/curcumin (Cur) coating was applied to further improve hydrophobicity while leveraging curcumin’s pH-responsive properties for visual monitoring. The influence of DCNF oxidation time and CNF incorporation ratio on film crystallinity and water resistance was systematically studied. The synergistic interaction of DCNF/CNF crosslinking and surface coatings endows the composite membrane (DCNF 1-75 /CNF/ECCur) with exceptional barrier properties, achieving a 44% reduction in water vapor transmission rate and 99% suppression of oxygen transmission rate. Moreover, the film demonstrated multifunctional properties: over 99.9% antibacterial efficacy against Escherichia coli and Staphylococcus aureus , 91% antioxidant activity, effective food preservation capability along with visual monitoring functionality. This work provides a novel approach for designing multifunctional nanocellulose-based intelligent packaging materials.
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产品关联
DOI
高影响因子
DESALINATION
·
2025
·
IF 9.8
Ying Qian,Zhexuan Lan,Shunfang Wen,Rong Liu,Haifeng Zhang,Ruiqing Li,Du Nie,Seeram Ramakrishna,Wei Zhang,Jiamu Dai
Solar interfacial evaporators (SIEs) with directional tubular structure have been well studied in seawater desalination. However, the lower water transporting ability always limits vaporing rate. Herein, inspired by the water transport mechanism of natural trees, we developed a unidirectionally orientated fiber-based columnar evaporator (CSCF) by simply treating cellulose acetate-based cigarette filter (CF) with sodium dodecyl sulfate (SDS) and carbon nanotubes (CNTs). Benefitting from the capillary and wicking effect of the original orientated fibers in CF, water could be effectively conducted to upper surface for solar evaporating process by loaded CNTs. Significantly, SDS could achieve homogeneous CNTs dispersing on CF, as well as regulate the liquid-solid and hydrophilic-hydrophobic interfacial environment to reduce water surface tension and evaporation enthalpy, which is helpful for further enhancing water transporting and rapid evaporating. Under 1 sun solar illumination, a superhigh and stable evaporation rate of 7.257 kg m −2 h −1 has been achieved. Additionally, even under dark condition, CSCF evaporator maintains high performance of 2.688 kg m −2 h −1 . It enables all-day evaporation while exhibiting excellent salt deposition resistance and long-term durability. This highly efficient and stable evaporator shows significant application prospects in seawater desalination, wastewater purification, and agricultural irrigation of cellulose derivative materials.
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DOI
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2025
·
IF 8
Haixia Xiao,Xiang Lin,Jie Luo,Shenghua Yang,Hongyu Yang,Xiaming Feng,Yafeng Gao,Chaojun Wan,Jianxin Zhang
Biomass aerogel, with its renewable raw materials and excellent biodegradability, shows great potential for application in the field of green building insulation and heat insulation. However, its poor mechanical properties and inherent flammability severely limit its application in actual building scenarios. In this study, freeze-drying technology was employed to composite phosphorylated cellulose with gelatin. This preparation strategy regulates the mass ratio of phosphorylated cellulose to gelatin, leveraging the hydrogen bonding interactions between the hydroxyl and amino groups of their molecular chains to construct a “rigid skeleton-flexible connection” synergistic network structure, resulting in a fully biomass-based composite aerogel with excellent flame-retardant and mechanical properties, resulting in a fully biomass-based composite aerogel with excellent flame-retardant and mechanical properties. The “rigid-flexible” interaction between phosphorylated cellulose and gelatin endows the 3PM2G aerogel (The mass ratio is 3:2) with a low density (0.062 g/cm³) and a low thermal conductivity (0.047 W/m·K). Compared with phosphorylated cellulose aerogel without gelatin, the compressive modulus of 3PM2G aerogel was increased by 208 %. Phosphorylated cellulose and gelatin form a biomass intumescent flame-retardant system with a limiting oxygen index (LOI) as high as 73 % by providing carbon, acid, and gas sources. This study is expected to provide insights into the development of bio-based aerogels with high fire safety performance, thereby promoting green building and sustainable development.
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产品关联
DOI
高影响因子
POLYMER
·
2025
·
IF 4.5
Biao Zhang,Fangfang Wang,Ya Ma,Lu Yao,Xudong Liu,Zhicheng Jiang,Bi Shi
Catalyst supports critically affect the efficiency and selectivity of supported metal catalysts. In this investigation, bacterial cellulose (BC) produced through bacterial fermentation was used as a catalyst support, with Pd 2+ loaded on BC and then reduced to prepare a supported Pd catalyst (Pd/BC). Owing to its nanofibrous structure and abundant hydroxyl groups exposed on the surface of BC, BC adsorbed more Pd 2+ via electrostatic interaction and promoted the dispersion of Pd particles, resulting in their smaller particle size. The high crystallinity index of BC endowed the catalyst with high thermal stability, enabling its application in the catalytic hydrogenation of vanillin (a lignin-derived platform chemical) under mild reaction conditions. Strong hydrogen bonding interaction between C6-OH on BC surface and the aldehyde group of vanillin facilitated the hydrogenation rate of vanillin. The hydrogenation of vanillin over the 3 wt% Pd/BC catalyst at 60 °C under 1.5 MPa H 2 for 2 h resulted in 98.45% vanillin conversion and 97.85% yield of vanillyl alcohol, with high recycling stability, and good catalytic universality, effectively catalyzing the hydrogenation of different lignin-derived aldehydes. This study paves the way for the application of cellulose with polyhydroxy groups in catalysis.
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DOI
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Hanqi Mou,Di Pang,Yuchuan Wang,Ying He,Honglin Li,Lijuan Ye,Hong Zhang,Yan Tang,Wanjun Li
Humidity-responsive actuators, which can directly convert ambient humidity changes into controllable mechanical deformation, exhibit broad application potential in fields such as bionic robotics, smart wearable devices, and human-machine interactive systems. MXenes have emerged as ideal humidity-responsive materials due to their unique two-dimensional layered structure, exceptional surface hydrophilicity and electrical conductivity. However, their poor environmental stability severely limits their application in humidity-driven actuators. In this study, we designed a composite film (MXBC) based on MXene-Nb2CTx and bacterial cellulose (BC), where a three-dimensional layered-fiber interwoven structure synergistically enhances humidity-driven performance through a hydrogen-bonding network. The MXBC film demonstrates an ultrafast response of 536° within 0.5 s under ΔRH = 50%, along with remarkable cycling stability over 3000 cycles, while maintaining robust mechanical properties. Leveraging these advantages, we successfully developed various intelligent bionic devices, including biomimetic flytraps, artificial flowers, smart switches, and adaptive clothing. This study not only provides a new strategy for developing highly stable and multifunctional smart actuating materials but also expands the application of MXenes in environmentally adaptive soft robotics and interactive wearable systems.
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产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Pengfei Lu,Rongcheng Wu,Guangwen Xu,Bin Zhang
Efficient nicotine separation technology not only facilitates developing reduced-harm tobacco products but also enables converting nicotine from a "health hazard" to a "high-value chemical". Herein, a simple and green dissolution–regeneration process was used to convert microcrystalline cellulose (MCC) into high-performance regenerated cellulose (RC), enabling efficient nicotine separation from tobacco extract. Structural characterization confirmed the crystalline transition from cellulose I to cellulose II and a 21.20 % reduction in crystallinity. Meanwhile, the specific surface area increased dramatically to 223.00 m²/g, yielding a porous structure with highly exposed hydroxyl groups. RC’s adsorption capacity (30.80 mg/g) was 26.78-fold that of MCC (1.15 mg/g), primarily due to the synergistic effects of increased surface area and crystalline form transition, with the former contributing more significantly (3.77-fold vs. 1.85-fold). Adsorption followed pseudo-second-order kinetics and fitted the Langmuir model, achieving equilibrium within 30 min with a maximum capacity of 34.31 mg/g. Thermodynamic analysis revealed the process to be spontaneous and exothermic. RC’s adsorption capacity decreased with increasing water content, attributed to competitive adsorption by water molecules. At 29.38 % water content, 75.71 % of the adsorption capacity was lost, but solvent regeneration restored 95.39 % of it. Mechanistic studies indicated that hydrogen bonding was dominant, with pyridinic nitrogen as the preferred binding site. Column separation with gradient elution achieved a 98.48 % nicotine recovery, with nicotine content in the separated product exceeding 97.52 %, and performance remained at 95.45 % after five cycles. This study presents a novel green adsorbent for efficient nicotine separation and offers insights into the development of cellulose-based materials for purifying natural products.
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高影响因子
危险品化学品经营许可证（带存储）