INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Yuantong Cao,Yuhe Dong,Tong Wu,Linyan Chen,Wanying Zhu,Tao Jiang,Nan He,Yao Liu,Ran Huang,Xi Yu,Ying Xiao,Tian Zhong
Fruit spoilage caused by microorganisms results in huge economic losses and health risks worldwide every year. To develop an intelligent antimicrobial material capable of responding to the physiological activity of postharvest fruits and releasing antibacterial agents on demand, we fabricated a pH-responsive film for the release of chlorine dioxide (ClO 2 ) using carboxymethyl cellulose (CMC) and sodium chlorite (NaClO 2 ) via the solution casting method, with a CMC:NaClO 2 ratio of 1:2 w /w. An acid environment simulated by 4 % acetic acid activated 43 % of ClO 2 released by the film within 7 days. A 1 × 2 cm 2 film in acid environment effectively inhibited the growth of Staphylococcus aureus (10 6 CFU/mL), Escherichia coli (10 5 CFU/mL), and Aspergillus niger on agar media (with colony diameters reduced from 60.00 mm to 19.07 mm). A 3 × 3 cm 2 film reduced the decay incidence caused by A. niger in strawberry from 100 % (control) to only 20 % on day 6. Compared with the control group, no significant differences in color, total soluble solids (TSSs) or triable acidity (TA) were observed in the film-treated groups. The development of pH-responsive NaClO 2 -CMC films offers a practical and effective solution for extending the shelf-life and maintaining the quality of fruit.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Han Zhong,Sijie Wang,Zhiguo Wang,Jianchun Jiang
In view of the current problems of fossil consumption and environmental pollution, harvesting electricity from water to obtain renewable and clean energy has become a trend. Herein, an asymmetric self-powered cellulose-based aerogel generator (SMEG) was proposed by directional freeze-drying using quaternized cellulose nanofibril (Q-CNF), sodium carboxymethylcellulose (CMC) and single-walled carbon nanotube. When exposed to humid air, the prepared aerogel generated ionic ionization and directional flow, resulting in a potential difference. The single SMEG could separately produce a continuous voltage and current output of up to 668 mV and 6.4 μA, accompanied by a power density of 0.871 μW⋅cm −2 at high humidity (90 %). Meanwhile, connecting several SMEG devices could directly provide satisfied power for some commercial electronics including LED lights and calculators. More importantly, it was compatible for applications in contactless sensing and respiratory monitoring with high moisture sensitivity and good durability. This work provides a low-cost and environmentally friendly strategy for the optimal design of moisture-electricity generators and self-powered humidity sensors.
✓ 已验证
产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2011
·
IF 3.463
Jing Han,Fa Cheng,Xiangguo Wang,Yuping Wei
In this work, the interactions between cationic cellulose (PQ-10) and anionic surfactant (SDBS) in aqueous media were investigated by turbidity, electric conductivity, steady-state fluorescence, shear rheology and transmission electron microscopy (TEM) analyses. Results indicated that precipitation appeared near the charge neutrality point, and the size of precipitation region widened with increasing PQ-10 concentration (0.57–1.72 mM for 0.05% PQ-10, and 2.30–17.22 mM for 0.5% PQ-10). The specific conductivity values of SDBS in the presence of PQ-10 were higher than that of pure SDBS over the whole concentration range under current experimental conditions. The aggregation number of SDBS kept constant in the flat region of the micropolarity curve (0.86 mM–1.43 mM). The structural transformation of the mixtures was monitored visually by TEM . As SDBS concentration increased, the morphologies of the mixtures changed gradually from branched wormlike aggregates to interconnected networks, finally the networks collapsed.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Siwen Yang,Di Xie,Rui Zhang,Congcong Zhang,Shanshan Song,An Yang,Xinru Liu,Yongming Song
The widespread use of traditional petroleum-based plastics has created an environmental crisis and health hazard, so there is an urgent need for bioplastics with excellent performance. However, fabricating of robust mechanical properties and heat resistance bioplastics in an efficient way has remained an enormous challenge. Herein, we proposed a strategy for the synergistic preparation of high-performance bioplastics with multiple physical crosslinking network structures via noncovalent and coordination bonds. In this strategy, carboxylated cellulose nanofibers (CNFs) and the polyphenol structures of tannic acid (TA) interacted noncovalently to create network structures; the bioplastic immersed in Ca 2+ solution formed ionic crosslinked networks and TA-Ca coordination bonds. The synergistic effect of multiple network structures composed of hydrogen and coordination bonds made cellulose-based bioplastics have dense structures and robust tensile strength (114.2 MPa), while bioplastics had the characteristics of high transparency and superior thermal stability. Furthermore, the laminated composites formed by the bioplastic and PVA could support 1,000 g easily, which allowed it to be used as weighing application. Thus, the proposed multiple physical crosslinking strategy provides a method for developing cellulose-based bioplastics with excellent performance, which offers a new approach for the subsequent development of sustainable green materials.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Shaoyu Zhang,Qian Long,Geyuan Jiang,Xin Li,Jianhong Zhou,Lupeng Shao,Suqing Zeng,Dawei Zhao
Given the escalating environmental and safety concerns, friendly protective materials with exceptional mechanical properties, biodegradability, and insensitivity to high temperature have received more and more attention. Here, we report a robust cellulosic gel through the multi-scale integration of cellulose molecular skeleton, nano-reinforced diatomite, and in situ polymerized polyacrylamide molecule. The bottom-up yet cross-scale approach facilitates the formation of cellulosic gel characterized by a highly interconnected hydrogen bond network and nano-enhanced domain, resulting in a tensile strength of up to 13.83 MPa, a Young's modulus exceeding 280 MPa, and an impact strength around 12.38 KJ m −1 . Furthermore, this gel exhibits structural stability at temperatures up to 130 °C, good flame retardancy, and complete biodegradability within a span of 35 days. The robust cellulosic gel, acting as a pliable protector, demonstrates exceptional protection for human joints. Our study presents a highly efficient and scalable pathway towards the development of sustainable and robust biomass gels, holding immense potential in intelligent-protective wearables and advanced materials science and engineering.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COMPOSITES PART B-ENGINEERING
·
2025
·
IF 14.2
Junfei Li,Yajie Xie,Jianming Zhao,Feilong Zhao,Abudureheman Bahatibieke,Guodong Liu,Haoye Meng,Yudong Zheng
Physiologically related electrical microenvironments play an indispensable role in nerve regeneration and repair. Simulating the electrophysiological characteristics of nerves through bionic construction of bioelectric fields has attracted wide attention, as it can regulate the behavior of nerve cells and promote the repair of nerve injuries. Electret is a kind of material that can maintain permanent polarization state without external electric field, and can be used as a new self-powered electrical stimulation method for nerve regeneration and repair. In this work, a novel self-powered conductive nerve conduit with both electret electrical effects and conduction activity was constructed to promote peripheral bioelectret nerve regeneration and repair. The microsphere electret is embedded on the bacterial cellulose structure through the self-polymerization reaction of dopamine, wherein the microsphere electret can provide micro-power and release electrical signals through the conducting layer of polydopamine. The maximum conductivity of the composite bioelectret can reach 6.2 × 10 −3 S/cm, and the output charge can reach 264 pC at a bending strain of 50 %. In vitro, composite bioelectret provided a good electrophysiological microenvironment for cells and enhance their adhesion, proliferation and migration capabilities. In the repair of sciatic nerve in rats, the electret effect and conductivity of composite bioelectret provide continuous electrical stimulation for repairing microenvironment, strengthen the communication among cells, and promote axon growth and myelin regeneration. Conductive composite bioelectret provides a new non-contact electrical stimulation strategy for nerve repair by combining the dual synergistic effects of conductivity and electret self-powered.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2025
·
IF 5.5
Shiqi Li,Qingfeng Zhang,Yixuan Zhang,Shengyong Mo,Xuezhen Qi,Yurong Cai
Loss capacity and impedance matching are critical factors that govern the electromagnetic wave-absorption performance of materials. However, achieving an optimal synergistic balance between these two factors remains a significant challenge. In this study, we fabricate an ultralight and anisotropic aerogel synthesized using directional freeze-drying with bacterial cellulose and MXene as the structural framework. Subsequently, MoS2 nanosheets were uniformly deposited onto the aerogel via an in situ hydrothermal process, forming nanoarrays that enhance multiple scattering and interfacial polarization. The aerogel demonstrates an ultralow reflection loss of −53.6 dB (2.26 mm thickness) and an ultrawide absorption bandwidth of 8.16 GHz (2.66 mm thickness). The oriented porous architecture and multiphase composition of the bacterial cellulose/MXene aerogel synergistically enhance performance through multiscale loss mechanisms (e.g., conductive loss and polarization loss) and adjustable impedance matching. Furthermore, the aerogel demonstrated excellent thermal insulation. This work provides valuable insights into the rational design of electromagnetic wave-absorbing materials with enhanced adaptability for diverse application scenarios.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Yong Deng,Jia Liu,Yutong Lei,Guiyun Huang,Zhe Zhang,Jiulong Sha
Flexible self-powered strain sensors based on piezoionic hydrogels demonstrate great promise for wearable devices, e-skins, and health monitoring. However, existing piezoionic hydrogels typically suffer from limited piezoionic output performance, falling short of the demands of high-performance, self-powered wearable sensors. This study addresses this challenge by constructing directional ion transport channels using a cellulose nanofibril (CNF)-assisted directional freezing technique. CNF acts as nanofillers that enhance ion selectivity in the channels while improving the mechanical properties of polyvinyl alcohol (PVA)/CNF organohydrogels, enabling efficient directional ion transport with K 3 [Fe(CN)] 6 as an ion source. The resulting organohydrogel exhibits high extensibility (479.61 %), ultimate stress (3.63 MPa), and transparency (90 %). Under a pressure of 5 N, it generates an output voltage of up to 199.45 mV within 150 ms, demonstrating a strong linear relationship between stress and output voltage in the range of 2–5 N (R 2 = 0.99). After directional freezing, the output voltage and current increased by 2.49 and 1.94 times, respectively. Additionally, the selective enhancement of ion mobility by CNF has improved the piezoionic output, resulting in a 2.02-fold increase in piezoionic voltage. These high–sensitivity piezoionic organohydrogels, with their efficient electromechanical conversion capabilities, indicate a promising future for flexible strain sensors.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2024
·
IF 10.7
Kunyang Liu,Miao Sun,Rao Guo,Hui Wang,Tianyuan Chen,Yudong Li,Chengyu Wang,Haiyue Yang
Porous materials are usually used as sound-absorbing materials to alleviate noise pollution problems. However, the heat energy conversed from the acoustic energy is wasteful. Herein, anisotropic cellulose-based phase change aerogels (MXene/CNF-C/PEG aerogels) are fabricated by facile directional freeze casting method with anisotropic porous structure, efficient sound wave absorption, acoustic-thermal conversion and thermal management capability. MXene/CNF-C/PEG aerogels with shape stability are formed by hydrogen bonding forces between carboxylated cellulose nanofibers (CNF-C) and PEG without chemical crosslinking. The addition of MXene not only increases thermal conductive performance to 150 % but also enhances acoustic-thermal conversion ability effectively. Moreover, the directional porous MXene/CNF-C/PEG aerogels (DMCPs) possess high energy storage density (143.0 J/g) and acoustic-thermal conversion performance, which open up broad application prospect in the field of acoustic to heat energy conversion and storage.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2012
·
IF 3.832
Hanjun Cheng,Qin Qian,Xiang Wang,Ping Yu,Lanqun Mao
Exploitation of naturally abundant biomass to produce electricity has been a hot topic. This study demonstrates for the first time a new application of enzymatic biofuel cells (BFCs) for direct production of electricity from carboxymethyl cellulose (CMC) biomass. As one of the most important cellulose derivates, CMC can be easily obtained from cellulose and has a good solubility in water. To produce electricity from CMC, cellulase was used as the biocatalyst in solution to catalyze the hydrolysis of CMC into glucose and glucose was then used as the biomass to produce electricity through biofuel cell technology. The bioanode for the oxidation of glucose produced for cellulase-catalyzed CMC hydrolysis was constructed with glucose dehydrogenase (GDH) as the biocatalyst and with methylene green (MG) adsorbed onto single-walled carbon nanotubes (SWNTs) as the electrocatalyst for the oxidation of NADH. The biocathode for the reduction of oxygen was fabricated by crosslinking laccase onto SWNTs. To catalyze CMC hydrolysis into glucose, 0.5 mg/mL cellulase was added into 1 wt.% CMC solution in 0.10 M acetate buffer (pH 5.5) and the mixture was then allowed to stand for 1 h to give CMC hydrolyzed solution. Under these conditions, CMC was hydrolyzed into glucose and glucose was oxidized under the biocatalysis of GDH, as characterized with UV–vis spectroscopy. In the CMC hydrolyzed solution containing NAD + cofactor , both the bioanode and biocathode exhibit a good bioelectrocatalytic activity toward the oxidation of glucose and the reduction of oxygen, respectively. With the presence of 10 mM NAD + into the CMC hydrolyzed solution, the assembled BFC has an open circuit voltage of 0.75 V and a maximum power output of 128 μW cm −2 at 0.35 V under ambient air and room temperature . These values are comparable to or even higher than those with other techniques employed to produce electricity from cellulose or cellulose derivates. This study essentially opens a new application of biofuel cell technology for energy production from naturally abundant biomass.
✓ 已验证
产品关联
DOI
高影响因子
FIBERS AND POLYMERS
·
2011
·Vol. 12
·期 3
·345-351
·
IF 0.84
Li Chaorong,Chen Rui,Zhang Xiaoqiang,Xiong Jie,Zheng Yingying,Dong Wenjun
Nanofibers of natural cotton lines cellulose, with a degree of polymerization above 10000, were prepared by electrospinning. The effects of cellulose concentration, flow rate and electric field strength on the morphologies of the fibers were systematically investigated. Furthermore, two effective improvements on the electrospinning apparatus were made: heating the pathway between the tip of the needle and the collector instead of the needle or the collector, and covering the drum with activated cellulose flake. High quality cellulose nanofibers were obtained under the optimized spinning conditions combined with the apparatus improvements. Moreover, oriented cotton nanofibers were acquired by elevating the rotation speed of the drum collector. The wettability of the nonwoven was greatly improved compared with the original activated cellulose. The obtained nonwoven or nanofibers of the natural cotton cellulose could be potentially applied in tissue scaffolds, protective clothing and high efficient water absorbing materials etc.
✓ 已验证
产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2009
·
IF 2.644
Hongbing Deng,Xue Zhou,Xiaoying Wang,Chunyan Zhang,Bin Ding,Qiuhua Zhang,Yumin Du
For the first time, a novel fibrous polysaccharide scaffold for cell culture was fabricated by the combination of electrospinning and electrostatic layer-by-layer (LBL) self-assembly technique. Oppositely charged chitosan (CS) and alginate (ALG) in aqueous media were alternatively deposited onto the negatively charged cellulose nanofibrous mats which hydrolyzed from electrospun cellulose acetate mats. The morphology and biocompatibility of the resultant scaffolds were investigated by regulating the pH of dipping solutions, the number of deposition bilayers , and the composition of outermost layer. Field emission scanning electron microscopy images indicated that the scaffolds possessed the fibrous structure and the thickness of CS/ALG bilayer formed on fibers was estimated in the range of 8–15 nm. The X-ray photoelectron spectroscopy results verified the existence of nitrogen element of CS on the surface of LBL films. The cell culture experiments demonstrated that the scaffolds have good biocompatibility for Beas-2B human bronchial epithelial cells in vitro.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）