CELLULOSE
·
2020
·Vol. 27
·期 7
·4019-4028
·
IF 4.21
Shen Junyan,Yang Xiaogang,Sun Xiaoqing,Gong Wenli,Ma Yanan,Liu Lin,Yao Juming
In this work, a novel and high-efficiency scavenger based on amino-functionalized cellulose was designed for sodium cholate sorption in vitro. To estimate the adsorption performance of the amino-functionalized cellulose for sodium cholate, various factors including sodium cholate concentration, contact time and electrolyte were investigated. The results suggested that amino-functionalization for cellulose regarding to hyperbranched polyethylenimine not only induce positive charge surface of cellulose but also provide abundant and special binding sites for sodium cholate sorption. The amino-functionalized cellulose displayed an excellent performance to sodium cholate sorption with a maximum adsorption capacity of 569.7 mg/g, higher than cholestyramine, a synthetic lipid-lowering drug in clinic. And the adsorption behavior was well fitted into the Langmuir isotherm model and pseudo-second-order kinetic model, suggesting a homogeneous monolayer chemisorption. Furthermore, the amino-functionalized cellulose presented the features of excellent anti-interferences, cytocompatibility and facile preparation process. All these results support amino-functionalized cellulose as a promising prospect for cholesterol elimination.
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MATERIALS LETTERS
·
2020
·
IF 3.204
Pengxiang Yu,Xiao Wang,Kangmin Zhang,Dengjian Zhou,Mingyuan Wu,Qingyun Wu,Jiuyi Liu,Jianjun Yang,Jianan Zhang
In the present work, high concentration graphene dispersion was prepared by sonication-assisted liquid-phase exfoliation (LPE) using inexpensive and environment-friendly aqueous cellulose solution. The highly efficient exfoliation of starting graphite into graphene was achieved by the noncovalent affinity of cellulose towards graphene. The obtained aqueous graphene sheets exhibited remarkably high concentration of 8.54 mg mL −1 with fewer defects (I D /I G ~ 0.53) and multi-layers structures, which promised a potential ideal candidate for applications in antistatic, corrosion protection, and electromagnetic compatibility.
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CARBOHYDRATE POLYMERS
·
2022
·
IF 10.723
Shumin Zhang,Fang Ding,Ying Liu,Xuehong Ren
Anti-infections therapy accompanied with effective hemorrhage control is highly urgent in clinics. Herein, a biomimetic nanoreactor encapsulated self-healing hydrogel with glucose-responsive catalytic activity was constructed for synergetic antibacterial defense and hemostasis . A metal-organic frameworks (MOF)-based nanocatalyst loaded with glucose oxidase (GOx) was fabricated and encapsulated in the bacterial cellulose (BC) reinforced hydrogel, while the sustained release of GOx could catalyze the decomposition of glucose for triggering the MOF-mediated catalytic activity to in situ generate OH for bacteria killing . Importantly, this nanozyme-based hydrogel exhibited excellent hemostatic property owing to the enhanced absorption capacity, which provides the essential glucose from blood for triggering the glucose-responsive antibacterial activity simultaneously. Antibacterial tests revealed that the hydrogel exhibited significant antibacterial efficacy and biofilm inhibition ability in the presence of normal blood level of glucose. Such design of biocatalytic hydrogel for synergistic hemostatic and antibacterial application brings new insight for nanozyme-based biomedical therapies.
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ACS Applied Nano Materials
·
2022
·
IF 6.14
Lin Si,ZeKun Shi,JiaYi Hou,ChengXia Miao,Qin Hou,Zhixiang Xu,Shiyun Ai
Herein, a facile, environmental-friendly, and sustainable strategy for efficient separation, conversion, and utilization of lignocellulose components was developed. Lignocellulose components were separated by green deep eutectic solvent (DES). The extracted lignin had potential for downstream production of aromatic chemicals and was used to synthesize lignin-doped carbon dots (CDs) in a ratiometric fluorescent probe for detecting biogenic amines (BAs) that were generated from food spoilage. The preparation of CDs provided an efficient strategy to convert biomass waste into carbon-based nanomaterials. This probe exhibited a sensitive, rapid, and linear response to BAs with a low detection limit of 0.045 μM. The retained cellulose with the crystal I structure was used to prepare cellulose nanofibers (CNFs) via oxidation and mechanical treatment. Furthermore, the CNFs were used as a matrix to fabricate CDs/CNFs films for real-time and visual food freshness monitoring. From biomass waste to rational applications, this study not only expanded the comprehensive utilization of lignocellulose in a green and environment-friendly manner but also demonstrated the prospects of CDs-based composite films in on-site monitoring of food quality and safety.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2021
·
IF 4.539
Jinli Qin,Zhaolu Wang,Jie Hu,Yuan Yuan,Ping Liu,Li Cheng,Zhengqing Kong,Ke Liu,Shouke Yan,Jianming Zhang
Rod-like cellulose nanocrystals (CNCs) show the intriguing liquid crystal self-assembly ability. The understanding of the self-assembly behavior of CNCs is of fundamental importance for constructing cellulose-based functional materials . The presented work explores how the liquid crystal self-assembly behavior of CNCs is affected by the grafted ionic liquids (IL) [VBIm][BF 4 ]. The results demonstrate that the IL modified CNC (CNC-IL) with positive charged form chiral nematic structure in suspensions, which was normally observed in negative charged ones. Significantly, such liquid-crystalline organization can be obtained under much lower concentration (as low as 1.0 wt%) than that of the non-functionalized CNCs prepared from paper pulp (~ 3.0 wt%). Moreover, for CNC-IL concentrations varying from 1.0 to 4.0 wt%, the tactoids (showing obvious fingerprint texture) coexist with the disordered CNC phase, rather than separating into two phases. Unlike original CNCs, the pitch of chiral nematic tactoids increases with increasing concentration of CNC-IL. Our study suggests that the distinct liquid crystal self-assembly behavior of CNC-IL is related to the restricted mobility of CNCs rods due to the increase in CNCs particle size and the high viscosity of CNC-IL suspension as the result of IL surface modification. The study of the liquid crystal assembly behavior of IL modified CNCs provides some new insight to understand the intriguing chiral nematic self-assembly of CNCs and for construction of CNC-IL reinforced nanocomposites .
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2021
·
IF 4.539
Qianqian Shang,Jianwen Cheng,Lihong Hu,CaiYing Bo,Xiaohui Yang,Yun Hu,Chengguo Liu,Yonghong Zhou
Cellulose/tannic acid/castor oil (CNF/TA/ICO) aerogels were prepared through the co-precipitation of tannic acid (TA) and castor oil-based siloxane (ICO) on cellulose nanofiber (CNF) surface and subsequent freeze-drying. The CNF/TA/ICO aerogels had the properties of lightweight, low density, high porosity, excellent hydrophobicity/superoleophilicity, and great recyclability. Adsorption study demonstrated that the adsorption capacity of the CNF/TA/ICO aerogel to various oil and organic solvents could reach 53.2–113.8 g g −1 , and the aerogel displayed favorable recyclability after 10 cycles. Moreover, the CNF/TA/ICO aerogel could be used as a filter to achieve the efficient separation of water-in-oil emulsions with separation efficiency higher than 94.4%. The successful fabrication of the multifunctional CNF/TA/ICO aerogel facilitates the comprehensive utilization of biomass resources . The facile and mild preparation method, green and eco-friendly raw materials, excellent adsorption capacity, and high separation efficiency make the CNF/TA/ICO aerogel a promising material for efficient oil recovery and emulsion separation with great applicability.
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NORDIC PULP & PAPER RESEARCH JOURNAL
·
2022
·Vol. 37
·期 2
·282-289
·
IF 1.595
Zhonghua Yang,Jinjie Zhang,Yingping Qi,Yongfeng Shen,Hua Li
Paper cultural relics are important historical and cultural heritage. However, they are easy to be damaged with time. In order to improve the mechanical strength, water resistance and delay aging of paper, hydrophobically modified hydroxyethyl cellulose-methyl methacrylate copolymer emulsion for paper protection was synthesized, with hydroxyethyl cellulose as the matrix, methyl methacrylate, butyl acrylate glycidyl methacrylate, and dodecyl methacrylate as the graft polymers. The prepared emulsion was applied to paper protection. By testing the effects of emulsion with different mass concentrations on the tensile strength, folding endurance, tear strength, whiteness and gloss of paper, the suitable conditions for the application of paper protection were found. The results showed that the mechanical properties of the paper coated with 10 % emulsion were significantly improved, and the gloss and whiteness were basically unchanged. The appearance of the paper did not change obviously, which was in line with the principle of “repair as old, keep the original”. At the same time, the aging resistance and water resistance experiments show that paper coated with the new material has certain aging resistance and water resistance. Therefore, the prepared hydroxyethyl cellulose-methyl methacrylate copolymer emulsion has great application prospects in the protection of paper.
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Desalination and Water Treatment
·
2024
·
IF 1
Qibin Luan,Yongli Xie,Da Teng,Runlin Han,Shouhai Zhang
Inorganic nanosheets materials are attracting more and more attention to prepare mixed matrix membrane (MMM) with excellent performance. MXene, a new kind of 2D transition metal carbides material, has the similar lamellar structure as graphene oxide and it is a potential material of separation membrane. In this work, the typical MXene material named Ti 3 C 2 T x is used to prepare MXene/cellulose acetate (CA) MMM with phase inversion method. The scanning electronic microscopic images of the membrane show the dense functional layer without visible defects. The MXene/CA MMM prepared with 18% CA and 3% MXene shows high rejection to Gentian Violet (408 Da) 100% with flux of 4.2 L/m 2 h at 0.3 MPa. It also has high rejection to Na 2 SO 4 89.6% with flux of 4.8 L/m 2 h at 0.3 MPa. After crosslinking with 5% glutaraldehyde at 60°C, the MMM performance does not decline after immersion in 50% dimethylacetamide solution for 12 d, which means excellent solvent resistance of the membrane. Compared with CA membrane, MXene/CA MMM also has better fouling resistance.
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SURFACE AND INTERFACE ANALYSIS
·
2011
·Vol. 43
·期 12
·1532-1538
·
IF 1.249
Ting Wang,Bin Li,Hongyan Si,Li Lin
The binding constants ( K a ) of phenolphthalein/β-cyclodextrin, phenolphthalein/(2-hydroxypropyl)-β-cyclodextrin, and phenolphthalein/(2,6-dimethyl)-β-cyclodextrin complexes were measured by ultraviolet-visible spectrophotometer. By regression of van't Hoff plot, thermodynamic parameters (Δ H ° and Δ S °) of these complexes' formation were obtained. Based on these parameters, steric hindrance influence, spontaneous and enthalpically driven process for the interaction of phenolphthalein with cyclodextrins were further proved, and phenolphthalein, as a probe molecule, was used to determinate cyclodextrins' content due to less than 0.6% relative standard deviation of these quantifications and recoveries with the range of 90 ∼ 103%. Using microfiltration technique, the detection phenolphthalein probe technique was applied on the determination of surface activity of cyclodextrins grafting cellulose beads by different polycarboxylic acids, and the results exhibit the real encapsulation activity of the cyclodextrins containing these spherical functional biomaterials. Copyright © 2011 John Wiley & Sons, Ltd.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2016
·
IF 2.822
Fanqun Li,Guanchao Wang,Peng Wang,Juan Yang,Kai Zhang,Yexiang Liu,Yanqing Lai
Lithium-sulfur (Li S) batteries have been considering as a very promising energy storage system since their high theoretical specific capacity and energy density . Nevertheless, the practical commercialization of Li S batteries is hindered by their poor cycle stability and fast capacity fading. Herein, a carbonized bacterial cellulose/titania (CBC/TiO 2 ) modified separator is designed to restrain the shuttle effect of Li S cells with its strong physical and chemical adsorption of polysulfides . Cells with CBC/TiO 2 modified separator show an initial discharge capacity of 1314 mAh g − 1 at 0.2C, and the capacity retention is 1048.5 mAh g − 1 after 50 cycles. A discharge capacity of 475 mAh g − 1 is obtained after 250 cycles at 2C. And during the rate test, Li S cells can deliver a discharge capacity of 537.1 mAh g − 1 at 2C. The outstanding electrochemical performance of Li S cells with CBC/TiO 2 modified separator shows a new approach for the application of Li S batteries.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yuyan Jiang,Tian Ju,Liangxian Liu,Haiyu Li,Yue Zhang,Na Wang,Zetan Lu,Ming Wei,Dexiu Min,Yanjun Xie,Jian Li,Yonggui Wang,Shaoliang Xiao
Development of a high-strength bio-based adhesive using simple, environment-friendly method is of great significance, as an alternative to petroleum-based adhesives. In this paper, Cellulose colloidal adhesives (CCA) with high stability and good reactivity were prepared by selective activation of microcrystalline cellulose (MCC) using sodium periodate under acidic conditions, with colloidal sizes ranging from nanometers to micrometers. CCA was applied to different types of veneer (poplar/beech/pine) to prepare 3-ply plywood. Compared to conventional activated cellulose adhesives, the CCA plywood showed excellent water resistance, dry/wet tensile shear strength of 3.7 MPa/1.6 MPa, met the requirements of Chinese national standards (GB/T 9846–2015). The excellent water resistance of CCA plywood was attributed to several factors. The colloidal particles filled the cell lumina of the wood, creating a mechanical interlocking effect. Additionally, CCA self-crosslinked to form stable intermolecular forces, the formation of cellulose nanocrystals by selective activation has an enhancing effect for CCA, while covalent and non-covalent bonds were established between CCA and the wood. Meanwhile, CCA has been shown to be universally applicable to cellulose extracted from various types of wood. This study realized the virtuous cycle of “from wood to wood”.
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产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2025
·
IF 6.2
Kangkang Zhang,Lin Liu,Siyu Cui,Xian Wang,Ning Li,Changzhao Li,Chunwang Yang,Chenyang Fan,Jun Li,Yushan Yang,Jian Qiu
Elastic or ductile networks derived from plant cellulose nanofibrils are suitable for use as nanostructured biofunctional materials with tunable mechanical properties. However, the non-destructive processing of functional guest nanoparticles into macroscopic cellulose nanofibril aerogel nanocomposites with enriched architecture and functionality through conventional nanotechniques maintains a challenge. Here, we developed cellulose nanofibril aerogels that can be used as a versatile template for the nonagglomerative in situ growth of nanoparticles and processed ferromagnetic cobalt ferrite nanoparticles into lightweight and porous magnetic aerogels through their unique network architecture, which were subsequently piezo-controlled into flexible magnetic nanopapers. It optimizes the tensile strength, resistance to ultrasonic decomposition, and ultra-foldable conductivity of flexible magnetic cellulose nanopaper. This flexible magnetic cellulose aerogel nanopaper (CANP) have excellent mechanical strength, with a high tensile modulus of 761.95 ± 10.2 MPa and exceptional foldability without misconfiguration damage after 10,000 repetitions of folding, as well as flexural fatigue resistance. Simultaneously, the highly flexible magnetic CANP exhibits large coercivity and moderately strong saturation magnetization strength. Due to optimized impedance matching of the dielectric/magnetic components with cellulose aerogel, the highly flexible magnetic CANP doped with cobalt ferrite nanoparticles has good effective absorption bandwidth (13.28 GHz) with a minimum reflection loss values of - 58.24 dB. Moreover, it had large coercivities, high saturation magnetization, and a minimum value of reflection.
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危险品化学品经营许可证（带存储）