INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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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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Surfaces and Interfaces
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2024
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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
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2024
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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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ACS Omega
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2025
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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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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Sibo Qiao,Lulu Dong,Yifan Jia,Yinghao Zhang,Lixia Bao,Yiyang Kang,Yufei Wang,Weichao Lin,Pengpeng Liu,Jiliang Wang
Interactions between polysaccharides and ionic liquids (ILs) at the molecular level are essential to elucidate the dissolution and/or plasticization mechanism of polysaccharides. Herein, saccharide-based ILs (SILs) were synthesized, and cellulose membrane was soaked in different SILs to evaluate the interactions between SILs and cellulose macromolecules . The relevant results showed that the addition of SILs into cellulose can effectively reduce the intra- and/or inter-molecular hydrogen bonds of polysaccharides. Glucose-based IL showed the intensest supramolecular interactions with cellulose macromolecules compared to sucrose- and raffinose-based ILs. Two-dimensional correlation and perturbation-correlation moving window Fourier transform infrared techniques were for the first time used to reveal the dynamic variation of the supramolecular interactions between SILs and cellulose macromolecules. Except for the typical HO⋯H interactions of cellulose itself, stronger –Cl⋯HO hydrogen bonding interactions were detected in the specimen of SILs-modified cellulose membranes. Supramolecular interactions of –Cl⋯H, HO⋯H, C–Cl⋯H, and –C=O⋯H between SILs and cellulose macromolecules sequentially responded to the stimuli of temperature. This work provides a new perspective to understanding the interaction mechanism between polysaccharides and ILs, and an avenue to develop the next-generation ILs for dissolving or thermoplasticizing polysaccharide materials.
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ACS Nano
·
2025
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IF 16
Jinsong Sun,Haozhou Huang,Wen Wang,Yuan Liu,Xiaoyang Lv,Zheng Yin,Wenjing Bi,Zihao Zheng,Xue Yang,Zhihan Tong,Shi Liu,Jiajun Liu,Jianing Liu,Zhiyi Hou,Zhenqian Pang,Haipeng Yu,Qinqin Xia
Sustainable and biodegradable bioplastics from natural lignocellulose offer a promising alternative to petroleum-based plastics, yet they often exhibit limited toughness and processability due to the inherent rigidity of polymer segments. Herein, we have developed a triple interlocking strategy to fabricate a high-strength, ultratough, and processable Bioplastic (denoted as CEL Bioplastic) from cellulose and lignin in the pulp/paper industry. In this process, we leverage room-temperature esterification of long-chain fatty acids with cellulose and lignin to produce a fully biobased CEL Bioplastic, distinguished by a robust triple-interlocking architecture that combines robust physical chain entanglements, cross-linked ester bonds, and densely packed hydrogen bonds. Physical chain entanglements in CEL Bioplastic efficiently distribute tension, while ester bonds and hydrogen bonds work synergistically to prevent chain disentanglement and enhance energy dissipation. The resulting CEL Bioplastic exhibits exceptional mechanical properties, with a tensile strength of ∼200 MPa, a fracture strain of ∼75% and an impressive toughness of ∼110 MJ/m3. These values are competitive to cellulose-lignin Bioplastic (denoted as CL Bioplastic) lacking long-chain entanglements and ester bonds, in tensile strength (15 times) but far exceed them in toughness (44 times). Moreover, long alkyl substituents exert an internal plasticizing effect, enabling CEL Bioplastics to form 3D structures through simple thermal or water-assisted shaping process. Such CEL Bioplastic exhibits biodegradability, recyclability and scalability (>4m in length), offering a sustainable pathway for producing high-performance bioplastics from natural biopolymers for functional and structural applications.
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FOOD HYDROCOLLOIDS
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2025
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IF 12.4
Binglei Song,Peili Wang,Xiaomei Pei,Linyu Xue,Yushi Sun,Zhao Chen,Zhenggang Cui
High internal phase emulsions (HIPEs) possess unique semi-solid characteristics and find extensive applications in food, medicine, and other fields. HIPEs stabilized by cellulose nanocrystals (CNC) not only show high safety and good stability, but also has good biocompatibility and biodegradability. However, Large amounts of CNCs are usually necessary to stabilize the HIPEs due to the rather strong hydrophilicity of the CNC surface. Herein, amine compounds were utilized to modify the CNC surface instead of commonly used ionic surfactants. The results indicate that hydrogen bonding serves as the main molecular interactions between amine molecules and the CNC surface. A combination of 0.1wt% CNC and 0.1 mM aliphatic primary amine could stabilize Pickering emulsions with an oil-water ratio of 1:1 (v/v). The usage of CNC is about 20-fold lower than that of emulsions without amines. When combined with 1 mM aliphatic primary amine, stable HIPEs with an oil-water ratio of 8:2 (v/v) were formed, with a stability exceeding 6 months. All the HIPEs stabilized by CNC and amine compounds exhibit a solid-like structure dominated by elasticity. With the synergistic effect of CNC and amine compounds, the commercially available olive oil, soybean oil, and canola oil can all form stable emulsions. In addition, porous materials were successfully prepared by freeze-drying the prepared high internal phase emulsions. The present work reveals that HIPEs can be well stabilized by CNCs and amines at very low concentrations through hydrogen bonds. The results are also inspirable to develop eco-friendly HIPEs in cosmetics and food science.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Jiahai Jia,Jiazhi Han,Mingjie Chen,Qing-Shan Shi,Xiaobao Xie,Yanzhu Guo
Aminoalkyl cellulose derivatives are bioactive polymers that have demonstrated important application as nanomicelles in biomedicines. However, the self-assembly behavior of aminoalkyl cellulose into nano micelles remains unclear. In this study, aminoalkyl cellulose with different degree of substitution (0.12–0.81) and varying alkyl chain lengths (C2-C6) were synthesized using tosylcellulose as an intermediate. The as-prepared aminoalkyl cellulose self-assembled into nanomicelles with particle size ranging from 121 nm to 185 nm, and ζ potential from 37.5 mV to 30.1 mV. Both the particle size and ζ-potential of the aminoalkyl cellulose micelles can be regulated by the degree of substitution, chain length of aminoalkyl groups, solution pH, ion strength, addition of fatty acids, and storage time. These findings shed light on the preparation of nanomicelles from amino cellulose derivatives, which hold important applications as biological materials.
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MACROMOLECULAR MATERIALS AND ENGINEERING
·
2025
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IF 4.6
Mingping Zhou,Dingzhe Che,Shichao Zhang,Qiang Wu,Denghui Wang,Yuan Li,Fei Gao,Jiping Yang,Zheng Zhang
To address the high-efficiency energy dissipation requirements of flexible protective materials, this study developed cellulose nanocrystal (CNC)-reinforced waterborne polyurethane (WPU) nanocomposites through an interface hydrogen bond regulation strategy. Utilizing the strong interfacial interactions between WPU chains and surface hydroxyl groups of CNC, a CNC/WPU system with a homogeneous dispersion structure was fabricated by the solution casting method. Fourier transform infrared spectroscopy results confirmed the formation of a high-density hydrogen-bonded crosslinked network between CNC and WPU. Dynamic mechanical analysis revealed that CNC predominantly interacted with hard segments of WPU through hydrogen bonding. Split Hopkinson pressure bar tests demonstrated that the composite containing 0.5 wt.% CNC exhibited optimal dynamic impact performance: elastic modulus increased by 59.6% to 5.57 ± 0.46 GPa, energy absorption improved 29.9% to 165.2 ± 6.7 MJ·m −3 , and maximum engineering stress grew by 36.2% to 545.5 ± 17.5 MPa. This enhancement originated from the well-dispersed CNC and robust hydrogen-bonded networks in CNC/WPU nanocomposites, which forced molecular chain orientation during dynamic impact and induced remarkable strain-hardening behavior.
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Journal of Bioresources and Bioproducts
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2025
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IF 13
Jiawei Yang,Qingyuan Li,Shengchang Lu,Hui Wu,Liulian Huang,Lihui Chen,Jianguo Li
Ionogels, a newly emerging type of gel material, are considered the most attractive candidate for constructing the next-generation ionotronic devices in the Internet of Things era. However, building robust and sustainable ionogels toward high-performance ionotronic devices in broad scenarios remains a huge challenge. Herein, a mechanically robust cellulose ionogel (RCI) via the facile “catalyst-free” yet chemically cross-linked engineering of cellulose molecules was developed. More specifically, ionic liquid, a typical cellulose solvent, and an ion-conductive component of cellulose ionogel were employed to afford the proton and replace the conventional, additional chemical catalyst, which indeed triggers the chemical reactions between cellulose and glutaraldehyde molecules, and thus creates the chemical-bonded, robust cellulose network of RCI. The prepared RCI (0.4 g glutaraldehyde to 0.6 g cellulose) demonstrated surprisingly high strength of ∼11 MPa with 1 000% improvement and toughness of 2.8 MJ/m 3 with 700% increase compared to the original cellulose ionogel (CI), as well as acceptable conductivity of 29.1 ms/cm, surpassing most ionogel materials. Such RCI easily constructed versatile ionotronic devices with unexpected voltage-pressure sensitivity, wide-range loading, and linear and steady-state output for self-powered, body motion, human health, and Morse-code information communication applications. The catalyst-free engineering paves the way toward easy-to-prepare, robust, and promising ionogels in our sustainable society, beyond the cellulose material.
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Results in Engineering
·
2025
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IF 7.9
Houhuang Tao,Xue Yu,Lanqing Li,Maria De Los Angeles,Na Wang
Hydrogel sensors are becoming increasingly important for electronic devices because of their flexibility, versatility, and high sensitivity, especially in applications that necessitate compatibility with human skin. However, creating hydrogel sensors that maintain high toughness and antifreeze properties in extreme cold conditions continues to be a challenge. This study introduces phytic acid (PA) into a hyperbranched polyamide (HBP)/cellulose nanofiber (CNF) interacting network to develop a freezing-resistant, high-toughness hydrogel with sustained electrical conductivity (HBP/CNF-PA). The terminal amino groups of the HBP enhance hydrogen bonding, thereby improving the mechanical strength and conductivity of the hydrogel. The resulting HBP/CNF-PA hydrogels exhibit a tensile strength of 219.7 kPa, a compressive strength of 0.87 MPa, and dissipate energy at a rate of 795 kJ·m -3 , along with a conductivity of 0.45 S·cm -1 and exceptional frost resistance, extending down to -40°°C, due to the ionization induced by PA. Hydrogels were utilized to create flexible sensors with a sensitivity of up to 1.34 V·g -1 . The sensors detect signals with a time interval of just 197ms and 215ms, capable of identifying changes in relative resistance caused by wrist flexion, gestures, and voice movements.
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ADVANCED FUNCTIONAL MATERIALS
·
2025
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IF 19
Tingting Liao,Shaofeng Huang,Lei Wang,Weiqi Liu,Xiaohui Wang,Wei Zhang
Lithium–sulfur (Li–S) batteries are considered promising candidates for next-generation energy storage systems due to their high energy density and low cost. However, their commercial production is impeded by the lithium polysulfides (LiPSs) shuttle effect and lithium dendrite growth, which degrade capacity and cycling stability. Inspired by the selectivity of biological ion channels, an ultrathin (8 µm) cellulose composite separator with high ion selectivity and permeability is developed by leveraging the compatibility of chitosan (CS) to cellulose fiber (CF) with covalent organic frameworks (COFs), promoting the self-assembly of COFs with a preferred (100) orientation. The resulting biomimetic bilayer CF@ICOF exhibits a high lithium-ion flux (2.186 mS cm −1 ) and exceptional Li + /S 6 2− selectivity (275.97), effectively suppressing both the LiPSs shuttle and lithium dendrite formation. As a result, the Li–S battery utilizing the CF@ICOF separator delivers ultra-stable cycling performance, with a capacity decay of only 0.047% per cycle over 800 cycles at 0.5C. Even with a high sulfur-loaded cathode (11.12 mg cm −2 ) and a lean electrolyte (3.5 µL mg −1 ), the battery retains over 92.73% capacity after 200 cycles. Moreover, a flexible pouch cell is integrated into a wearable display system, demonstrating both high energy density (440.98 Wh kg −1 ) and excellent stability.
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危险品化学品经营许可证（带存储）