RSC Advances
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2025
·Vol. 15
·期 9
·7181-7190
·
IF 4.6
Zeping Wang,Lionel O'Young,Sajid Mahmood,George Zheng Chen,Yitao Zheng,Binjie Hu
Cellulose nanocrystals (CNC) are widely used due to their biodegradability, high strength, large surface area, and functional versatility. This study investigates the interaction between CNC and acrylate emulsions, which mainly focuses on their impact on emulsion characteristics, polymerization behaviour, and storage stability. CNC was incorporated into an acrylate miniemulsion system at varying concentrations, followed by the systematic study of its effects on particle size, interfacial tension, zeta potential, yield, and viscosity. The morphology of CNC-acrylate systems was analysed using infrared spectroscopy and scanning electron microscopy (SEM). The results demonstrated that CNC effectively co-stabilized acrylate miniemulsions and enhanced their stability before polymerization. Although CNC did not directly participate in polymerization or affect yield or reaction rates, it slowed the diffusion of free radicals. However, CNC concentrations higher than 1 wt% negatively impacted post-polymerization storage stability and caused aggregation of droplets. These findings reveal the dual role of CNC as both a stabilizing and aggregating agent, offering new insights into its potential for the design of advanced polymer systems.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Heyang Zeng,Xushuo Yuan,Xinjie Yang,Li Liu,Yanfei Lin,Linkun Xie,Xijuan Chai,Kaimeng Xu,Guanben Du,Lianpeng Zhang
Cellulose is the most abundant natural polymer with good biocompatibility and easy modification characteristics. In this paper, a novel cellulose fluorescence probe CNS for detecting ClO − was prepared by modifying microcrystalline cellulose ( MCC ). The fluorescence detection results indicate that CNS exhibits a highly specific “ratiometric” and “colorimetric” fluorescence response to ClO − . In the presence of ClO − , the fluorescence color changes from green to cyan. In addition, the color of the solution changes from yellow to colorless, which can be observed with the “naked eye”. Considering the good selectivity and anti-interference ability of CNS , the probe can be used for the detection of ClO − in real water samples. Importantly, CNS composite films and test papers were prepared and showed practicability in the detection of ClO − , highlighting its broad application potentials.
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ADVANCED MATERIALS
·
2018
·Vol. 30
·期 30
·1801347
·
IF 21.95
Chao Jia,Chaoji Chen,Yudi Kuang,Kun Fu,Yilin Wang,Yonggang Yao,Spencer Kronthal,Emily Hitz,Jianwei Song,Fujun Xu,Boyang Liu,Liangbing Hu
Advanced textiles made of macroscopic fibers are usually prepared from synthetic fibers, which have changed lives over the past century. The shortage of petrochemical resources, however, greatly limits the development of the textile industry. Here, a facile top-down approach for fabricating macroscopic wood fibers for textile applications (wood-textile fibers) comprising aligned cellulose nanofibers directly from natural wood via delignification and subsequent twisting is demonstrated. Inherently aligned cellulose nanofibers are well retained, while the microchannels in the delignified wood are squeezed and totally removed by twisting, resulting in a dense structure with approximately two times higher mechanical strength (106.5 vs 54.9 MPa) and ≈20 times higher toughness (7.70 vs 0.36 MJ m −3 ) than natural wood. Dramatically different from natural wood, which is brittle in nature, the resultant wood-textile fibers are highly flexible and bendable, likely due to the twisted structures. The wood-textile fibers also exhibit excellent knitting properties and dyeability, which are critical for textile applications. Furthermore, functional wood-textile fibers can be achieved by preinfiltrating functional materials in the delignified wood film before twisting. This top-down approach of fabricating aligned macrofibers is simple, scalable, and cost-effective, representing a promising direction for the development of smart textiles and wearable electronics.
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Advanced Fiber Materials
·
2025
·
IF 21.3
Zhang Jinping,Du Peibo,Li Xiaoyan,Liu Weiguang,Li Chengcheng,Ji Yating,Zeng Chuan,Zong Dandan,Cai Zaisheng
The development of efficient fog-harvesting materials is of great significance for addressing freshwater scarcity. However, conventional materials with hydrophilic/hydrophobic regions frequently struggle with coordinating water droplet capture and transport, resulting in lower water collection efficiency. Herein, an integrated strategy based on the engineering of cellulose molecular modification for achieving high-performance fog harvesting is presented. The well-designed cellulose heterogeneous wettability surface (CWF-Cu), through the coordination of copper ions with nanofibrils and masking-assisted spray technique, significantly facilitates water capture and transport for fog harvesting. The copper ions are introduced into the cotton fabric, endowing it with high hydrophobicity (with a contact angle of approximately 130°) and polarity, which regulates wettability and increases potential nucleation sites. The as-prepared CWF-Cu fabric realizes a superior water collection rate (WCR) of 2672 mg·cm −2 ·h −1 , increasing by 70% compared with those of the conventional hydrophobic materials. Moreover, the CWF-Cu fabric demonstrates stable performance to withstand the impact of water and pollutant flushing, and enhanced mechanical strength and ultraviolet (UV) durability, which ensures the long-term usability of the material. This work provides an efficient route to achieving efficient fog harvesting that addresses water scarcity from the environment.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Chunxiao Gong,Zhaoyang Ju,Qixuan Lin,Xianqing Lv,Richard Lee Smith,Lujiang Xu,Yang Cao,Li Shuai,Zhen Fang
Cellulose acetate (CA) is a versatile biopolymer derivative widely used in consumer products such as cigarette filters, textiles, and plastics. The extensive use of CA-based products generates substantial plastic waste, which can persist in the environment for over a decade due to its low biodegradability, posing serious environmental challenges. Herein, we report a one-step conversion process that transforms CA plastic waste into 5-hydroxymethylfurfural (HMF) while simultaneously recovering acetic acid. By employing AlCl 3 as a catalyst in an acetone-water solvent system at 160°C for 50 min, CA exhibited a 53.7 % HMF yield, a threefold increase compared to untreated cellulose, while also achieving a 97.3 % theoretical yield of acetic acid. The HMF yield exceeded 50 % when cigarette filters or CA fabrics were used as substrates. Molecular dynamics simulations revealed that the acetyl groups in CA enhance its coordination with acetone molecules, reducing the probability of protonation at the C1 and C4 oxygen atoms of the CA monomer and thereby suppressing the formation of undesired byproducts. Furthermore, the in-situ regenerated acetic acid actively promotes the HMF production. This study establishes a viable pathway for upcycling CA waste while advancing sustainable management strategies for CA-based plastics, offering a promising solution to mitigate environmental impacts.
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ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Qiang Xia,Hairong Wang,Yuanting Dai,Zijun Mao,Xiang Hao,Feng Peng
Plant growth relies on light, performing photosynthesis throughout their entire life cycle from seedlings to maturity. Plant cell wall strength increases continually due to the photosynthesis of polysaccharides like hemicellulose and their entanglement with cellulose fibers. Here, a photosynthesis-inspired strategy is presented that utilizes light-induced formation of hemicellulose-derived degradable polyester within cellulose fibers to create highly reinforced biocomposites. Photo in situ polymerization of diallyl glyoxylate xylose (DAGX), a stable carbohydrate derived from hemicellulose, within cellulose fibers produces a biocomposite with an interwoven degradable polyester/cellulose fiber structure, mimicking the architecture of plant cell walls. The light-oriented formation of an interpenetrating network structure enables the biocomposite to achieve a tensile strength of ≈43 MPa, surpassing most commercially available degradable and non-degradable plastics, exceeding that of cellulose fibers by fivefold. The biocomposite shows excellent water resistance at room temperature yet degrades quickly in hot water, enabling easy recycling of undamaged cellulose fibers for papermaking. Cost and life cycle analyses reveal that the biocomposite is more cost-effective than commercially available biodegradable plastics, along with a reduced environmental footprint. This study may unlock strategies to fabricate low-carbon bioplastics by leveraging the abundant and diverse natural polysaccharides library.
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CARBOHYDRATE POLYMERS
·
2024
·
IF 10.7
Qianwen Lu,Hengfeng Li,Zhijian Tan
Wearable electronics significantly impact health monitoring, clinical care, and human-machine interfaces. Eutectogels, which utilize deep eutectic solvents (DES) address the drawbacks of hydrogels, such as weight loss and poor temperature tolerance, as well as the high costs and toxicities associated with ionogels. Despite these advances, most eutectogels serve only as sensors or epidermal electrodes and rarely fulfill both functions simultaneously. In this study, we present a multifunctional eutectogel designed to function in both ways. Incorporating natural cotton cellulose nanofibers as nanofillers reinforced the tensile strength of the resultant eutectogel by 7.47 times compared to that of the pure eutectogel, reaching 4.93 MPa. This eutectogel exhibited high ionic conductivity (1.22 S m −1 ), strong adhesion (1562.2 kPa to iron), self-healing ability (80.37% strain recovery and 80.53% tensile strength recovery), a broad temperature tolerance (−40 to 80 °C), and antibacterial properties. It demonstrates high sensitivity for the real-time strain detection of human activities and accurately captures electrophysiological signals, enabling the control of a small car. This versatile eutectogel has excellent potential for use in flexible wearable electronics.
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ACS Omega
·
2025
·
IF 4.3
Hongjing Yang,Zhipeng Zang,Zhen Wang,Kai Song,Yunzhen Gao,Jinbin Wei,Lu Han,Jiandong Zhang,Chen Liu
Starch and cellulose are pivotal determinants of tobacco quality. In this work, starch and cellulose in flue-cured tobacco leaf were extracted through a sequential extraction process. First, an aqueous solution of tobacco leaves was prepared, and starch was extracted by boiling the leaves in water. The precipitate was separated, and the cellulose within it was hydrolyzed using a sulfuric acid solution. Then, starch content was quantified by a colorimetric reaction with iodine solution, while cellulose content was determined by using anthrone as a chromogenic agent. The reaction conditions were optimized to ensure accuracy, and the recovery rate and relative standard deviation (RSD) were calculated under these optimum conditions. The recovery rates for starch and cellulose in the tobacco samples ranged from 90 to 105%, with the RSD of interday and intraday determination being less than 5%. These results demonstrate that the proposed method is both sensitive and reproducible, making it suitable for the rapid and precise quantification of starch and cellulose in tobacco samples.
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Journal of Energy Storage
·
2024
·
IF 8.9
Junzhi Wang,Yun Zhang,Xinxing Peng,Wei Gong,Dezhan Ye,Jie Xu
Separator is one of the important elements of lithium-ion batteries, which affects both the capacity and safety performance of the batteries. In this paper, polypyrrole (PPy) was grown on bacterial cellulose (BC) nanofibers using in situ polymerization. A bilayered composite separator with PPy-coated BC conductive upper layer and BC insulating lower layer was prepared by paper-making method. The redox-active PPy could contribute to a specific discharge capacity of 119 mAh g −1 at 2C current density for the battery with the bilayered separator, which is significantly superior to the device with the polyolefin separator (73 mAh g −1 ). Moreover, the redox layer provided a low overpotential in the Li//Li symmetric cell cycle, which played an important role for the cycle stability of the lithium-ion batteries.
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Surfaces and Interfaces
·
2024
·
IF 5.7
Chengcheng Yang,Kangbo Yang,Hongshan Guo,Huajun Sun,Nan Xiang,Chuanxing Wang
ABSTRACT Although some progress had been made in the adsorption of graphene aerogels, more research was needed on their elasticity and recyclability. In this paper, a superhydrophobic fluorinated cellulose and graphene composite aerogel (FCGA) was prepared by a simple two-step impregnation method. Firstly, nano-cellulose was introduced into the graphene aerogel to inhibit the excessive accumulation of graphene lamellae and increase the specific surface area. The surface of the composite aerogel was then impregnated with silanol and fluorinated functional groups by a two-step impregnation method, resulting in a superhydrophobic aerogel with remarkable elasticity. The introduction of cellulose and silane provided the aerogel with excellent elasticity and recovery from cyclic adsorption. The successful grafting of the fluorophobic groups of PFDMS onto the graphene oxide strengthened the framework of the graphene aerogel, making FCGA a good candidate for repeated selective oil absorption. It could be restored to the original height after compression to 50% and 80% strain decompression. FCGA could efficiently absorb oil in water and had a high organic adsorption capacity. And the adsorption capacity of different oils/organic solvents reached 22480 mg/g∼36700 mg/g. Its absorption efficiency remained above 98.5% under distillation cycles. Due to its high elasticity, it retained more than 90% of its cyclic adsorption capacity through the squeeze cycle. As a simple, low-cost recovery method, its reusability was already better than most known adsorption elastic materials. The prepared composite aerogel had the advantages of simple preparation, low density (0.014g/cm 3 ), superhydrophobicity (water contact angle 153.3°), excellent adsorption properties, and recyclability. Therefore, FCGA had a very promising application in circulating selective oil absorption.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Xing Zhu,Yuanyuan Qiang,Xuechuan Wang,Mingliang Fan,Zuoyuan Lv,Yi Zhou,Bin He
Immobilized enzymes are one of the most common tools used in enzyme engineering, as they can substantially reduce the cost of enzyme isolation and use. However, efficient catalysis of solid substrates using immobilized enzymes is challenging, hydrolysis of insoluble cellulose by immobilized cellulases is a typical example of this problem. In this study, inspired by bees and honeycombs, we prepared gelatin-modified cellulase (BEE) and gelatin hydrogels (HONEYCOMB) to achieve reversible recycling versus release of cellulase through temperature-responsive changes in the triple-stranded helix-like interactions between BEE and HONEYCOMB. At elevated temperatures, BEE was released from HONEYCOMB and participated in hydrolytic saccharification . After 24 h, the glucose yields of both the free enzyme and BEE reached the same level. When the temperature was decreased, BEE recombined with HONEYCOMB to facilitate the effective separation and recycling of BEE from the system. The enzymatic system retained >70 % activity after four reuse cycles. In addition, this system showed good biocompatibility and environmental safety. This method increases the mass transfer capacity and enables easy recovery of immobilized cellulase, thereby serving as a valuable strategy for the immobilization of other enzymes.
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ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Weiwei Ping,Bangzhuang Xue,Fan Zhang,Xianzhun Huang,Lihan Chen,Hongfa Xiang
Separators can physically inhibit the Li dendrite from piercing through to prevent the short-circuit. To enhance the energy density of Li metal batteries, separators should be thinner and stronger (<20 µm, >25 MPa). In this work, a ≈10 µm cellulose composite separator by roll-to-roll technique is fabricated. Within the films, the Cu(OH) 2 nanoclusters are uniformly confined in the cellulose matrix without any agglomeration, enhancing the mechanical strength to ≈100 MPa. The coordinated copper ions help open the ion transporting channel, enabling the films to exhibit an ion conductivity of ≈2.14 mS cm −1 , among the highest reported values of separators. Compared with the polypropylene separators, the cellulose composite films display excellent cycling stability and effective Li dendrite inhibition with Li anodes. The symmetric cell Li||Li can stable cycle for more than ≈1800 h at 0.5 mA cm −2 with the plating/stripping time of ≈1 h. The cell LiFePO 4 ||Li shows an excellent rate performance of 5C (1C = 170 mA g −1 ). The full cell LiNi 0.8 Co 0.1 Mn 0.1 O 2 ||Li maintains a specific capacity of ≈162 mAh g −1 for ≈420 cycles at 1C (1C = 200 mAh g −1 ). The cellulose composite films enable scalable production with excellent electrolyte-wettability and non-flammability, demonstrating the promise in Li metal batteries with high safety and energy densities.
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