JOURNAL OF APPLIED POLYMER SCIENCE
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2024
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IF 2.7
Zheng Wang,Zhiwei Yang,Pengju Qiao,Jing Fang,Xingjiang Wu,Zhensheng Yang,Hao Li
Degradable polyvinyl alcohol (PVA) liquid mulch film is an effective alternative to traditional petroleum-based mulch. However, PVA has problems such as poor water resistance and high cost in practical applications. In this work, a liquid mulch film PCQ was prepared by simply blending quaternized lignin (QAL), carboxymethyl cellulose (CMC), and PVA. PCQ was characterized and analyzed through FT-IR, SEM, and other tests. The effects of QAL and CMC on the water resistance, barrier properties, water retention, soil-fixing properties, and degradation properties of PCQ were investigated. The results showed that the addition of QAL and CMC significantly enhanced the water resistance of the liquid mulch film and provided excellent UV shielding (90%) and water vapor shielding performance (249.3 g m −2 d −1 ). In addition, PCQ effectively immobilized topsoil, retained soil moisture, and improved seed germination. This study provides a new strategy for preparing environmentally friendly, low-cost, and degradable liquid mulch film.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Danish Iqbal,Raza Ullah,Renhai Zhao,Yuejie Dou,Di Yan,Xin Ning
This research presents a novel and efficient process for Congo Ced (CR) dye removal together with exceptional antimicrobial performance using a dual-functional composite membrane. The membrane fabrication involves the electro-spun infusion of cuprammonium cellulose solution with polyethylene oxide (PEO) and polyacrylonitrile (PAN) in a conjugated fashion. The composite membrane exhibits 94.0 % dye removal capability and 41 mg/g adsorption capacity. The adsorption kinetics was proved to conform to the pseudo-second-order (PSO) model, and the equilibrium adsorption results were accurately defined by the Dubinin-Radushkevich model, indicating the process of adsorption as a physical, exothermic interaction that occurs spontaneously. The dye removal efficacy of the membrane in the first and fifth usage was 94.5 and 84.2 %, respectively, demonstrating its effectiveness, stability, and reusability. The composite membrane also exhibited effective antibacterial performance regarding Staphylococcus Aureus and Escherichia Coli ( S. aureus & E. coli ) with 99 % bacterial reduction capability at high permeation flux of ∼13,000 L m −2 h −1 . Hence, the fibrous composite materials demonstrated its potential to be an ideal choice for water treatment in textile mills, especially in developing countries.
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JOURNAL OF CATALYSIS
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2024
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IF 6.5
Wei Jia,Wengang Liu,Yuandong Cui,Hang Song,Chengfeng Zhou,Wei Jiang,Haoxi Ben,Xiaoli Yang,De Chen
Converting cellulose into C 2 alcohols presents a sustainable alternative to fossil fuels, contributing to the development of eco-friendly and economically viable biofuels and chemicals. Tungsten oxide (WO 3 ) is a key solid acid catalyst for this process, yet limited research explores its diverse morphologies and unique catalytic effects. This study investigates diverse WO 3 morphologies (nanosheets, nanoflowers, nanoblocks, and tetrahedral octahedra) in combination with Pd for converting cellulose to C 2 alcohols. Optimized conditions with Pd/o-WO 3 catalyst resulted in the highest C 2 alcohols (ethylene glycol and ethanol, 80.9 %), notably yielding 64.8 % ethylene glycol. Extensive characterizations and DFT calculations reveal the smaller element occupancy rates and a longer W-O bond length led to a large number of crystal defects over Pd/o-WO 3 . It facilitated the formation of W 5+ –OH sites and Pd-O(H)-W interactions, further synergistically enhancing hydrogenation ability and acidity. Designed experiments to elucidate cellulose conversion pathways, including hydrolysis, retro -aldol condensation, and hydrogenation. This study emphasizes the unique impact of WO 3 morphologies and underscores the importance of supporting crystal defects for catalytic performance in eco-friendly biofuel and chemical production.
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JOURNAL OF CRYSTAL GROWTH
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2025
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IF 2
Kang Han,Dandan Gong,Chengwei Du,Lijuan Zhang,Lu Wang,Jing Lian,Aniruddha Majumder,Jie Lu
The influence of 2,2,6,6-Tetramethylpiperidinooxy (TEMPO) cellulose nanofibers (TCNF) on the nucleation and growth of sulfathiazole (STZ) crystals is uncovered, aiding in the precise control of drug crystal morphology. To elucidate the mechanism by which TCNF regulates the nucleation and growth of STZ crystals, cooling crystallization experiments and molecular simulations were conducted. Initially, the crystal forms of STZ in pure water were determined. Subsequently, crystallization experiments with the addition of TCNF were conducted. The experiments aimed to investigate their effects on crystal form and crystal habits. The results revealed that a pure Form III was obtained due to the hydrogen bonding interactions on the surface of TCNF. Molecular simulations helped better explain the influence on specific crystal faces. This study indicates that the influence of TCNF on the characteristics of STZ crystals is mediated through interaction with the z-axis crystal facets, leading to the formation of block-shaped crystals. In addition, the higher concentration of TCNF forms a local closed space, resulting in blocked mobility, allowing STZ molecules in the solution to grow at the defects of STZ crystallization.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Yongyan Yang,Ying Ma,Meiliang Wu,Xueping Wang,Yuan Zhao,Shuangling Zhong,Yan Gao,Xuejun Cui
Self-healing hydrogel is a promising soft material for applications in wound dressings, drug delivery, tissue engineering, biomimetic electronic skin, and wearable electronic devices. However, it is a challenge to fabricate the self-healing hydrogels without external stimuli. Inspired by mussel, the metal-catechol complexes were introduced into the hydrogel systems to prepare the mussel-inspired hydrogels by regulating the gelation kinetics of Fe 3+ crosslinkers with gallic acid (GA) in this research. The amine-functionalized carboxymethyl cellulose (CMC) was grafted with GA and then chelated with Fe 3+ to form a multi-response system. The crosslinking of carboxymethyl cellulose-ethylenediamine-gallic acid (CEG) hydrogel was controlled by adjusting the pH to affect the iron coordination chemistry, which could enhance the self-healing properties and mechanical strength of hydrogels. In addition, the CEG hydrogel exhibited great antibacterial and antioxidant properties. And the CEG hydrogel could strongly adhere to the skin tissue. The adhesion strength of CEG hydrogel on pigskin was 11.44 kPa, which is higher than that of commercial wound dressings (∼5 kPa). Moreover, the thixotropy of the CEG hydrogel was confirmed with rheological test. In summary, it has great potential in the application field of wound dressing.
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FOOD CHEMISTRY
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2025
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IF 9.8
Fuyuan Ding,Siman Long,Xiaowei Huang,Xin Wang,Roujia Zhang,Jiyong Shi,Yang Zou,Xiaobo Zou
In this study, the electrospun cellulose acetate (CA) nanofibrous films were hydrolyzed and then dyed with a synthetic dye of 1-hydroxy-4-[4-(ethylsulfurate sulfonyl)-phenylazo]-naphthalene (HESPN). The physicochemical properties of the dyed films were similar to the unmodified films. Due to the covalent bonds formed between dye and cellulose molecules, the dyed films showed high stability with almost no dye leakage in acidic solutions and minimal leakage (0.4 %) in alkaline solutions. In addition, the dyed films exhibited rapid responsiveness to ammonia gas and could transit from yellow to brown within 20 s due to the nanofibrous structure of the films and quick color change of the dye. The dyed films can be used to monitor the spoilage of shrimp with a color change from yellow to brown. The nanofibrous cellulose films dyed with HESPN can be potentially applied as indicators to be used in smart packaging.
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Journal of Energy Storage
·
2024
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IF 8.9
Wenyu Bai,Guangpeng Ma,Xinpu Zhou,Tongtong Gao,Yu Luo,Di Yu,Shuang Wang
Traditional two-dimensional transition metal carbides/nitrides (MXene) have gained much academic concern due to their excellent physicochemical properties, but their susceptibility to self-stacking leads to poor cyclic stability. In this paper, an MXene-based electrode active material was successfully prepared. The generated modified PPy (g-PPy) increases the active site, increases the accessibility of ions, and can give full play to the pseudocapacitance. By the combination of modified PPy (g-PPy) nanoparticles with pseudocapacitive behavior polymerized in situ on sulfonated cellulose (SC) and MXene , not only the electrochemical performance was improved by exploiting the synergy between different electrode materials and different energy storage mechanisms, but also the MXene as a skeleton limited the volume expansion and contraction of PPy during charge/discharge cycles and the g-PPy and SC composites (g-PPy@SC) as a spacer supported the MXene layer, resulting in much higher cycle stability. Cycle stability of 98.4 % even after 10,000 cycle tests. In addition, a symmetric supercapacitor assembled from this electrode material maintains a stability of 84.4 % under 10,000 cycles at a low temperature of −40 °C. Therefore, this study provides a feasible method for the preparation of MXene-based electrodes with high cycling stability.
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MICROCHEMICAL JOURNAL
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2024
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IF 4.9
Lingxiao He,Ning Ma,Zhengyun Liang,Sidan Zhao,Jiaming Yan,Hanchen Lin,Chaoqun You,Lingchao Cai,Fei Wang
Matrine is a type of alkaloid found in plants, exhibiting a wide range of biological and pharmacological activities. The process of separating and purifying matrine poses challenges due to its low concentration and frequent presence in mixtures during raw extraction. This work aims at synthesizing suitable adsorbents for efficient separation and purification of matrine from plant materials. The sulfonated cellulose nanocrystals/sodium alginate beads (SCNCs/SA) were synthesized by the ionic gelation method, characterized and investigated for the adsorption of matrine from water. The equilibrium adsorption capacity of SCNCs/SA beads for matrine at 298 K was approximately 55.66 mg/g. The adsorption enthalpy, entropy, and free energy of matrine on the SCNCs/SA beads were evaluated, indicating that the adsorption process was spontaneous, exothermic, and primarily driven by physisorption. 95 % of the adsorption equilibrium could be achieved within 60 min, and approximately 20 bed volumes of an 80 % (v/v) ethanol aqueous solution for effective recovery. The adsorption isotherms are analyzed using both Langmuir and Freundlich models, the kinetic of adsorption using the pseudo-first-order and pseudo-second-order models, and the breakthrough curves using four breakthrough models. These results suggested that the rapid adsorption and effortless regeneration render SCNCs/SA beads as promising adsorbents for the efficient adsorption and separation of matrine from plants.
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ACS Applied Polymer Materials
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2024
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IF 4.4
Yongjiao Liu,Xiaoxuan Liu,Ning Sun,Jingzhong Duan,Shukang Nan,Zixiang Dong,Yao Zhang,Xiaojing Long,Bingbing Wang,Yanzhi Xia
To address increasingly pressing ecological, energy, and resource challenges, there is an urgent need to develop and utilize renewable resources, in particular the exploitation of polymeric materials in marine and terrestrial organisms. This study focuses on a bottom-up preparation process to achieve uniform mechanical strength in all dimensions. Micron and nanoscale oxidized cellulose fibers were prepared through etching and oxidation techniques. Cross-linking metal ions with oxidized celluloses and alginate polysaccharides established a 3D cross-linking system. The flame retardancy of composite woods was evaluated using the limiting oxygen index (LOI) and cone calorimetry (CONE). With an LOI value of 30%, the composite wood exhibited a remarkable increase in fire resistance capability, surpassing the LOI value of natural wood (18%) by a significant margin. Furthermore, the composite wood exhibited a considerably lower minimum total heat release (THR) (5.35 MJ m–2) compared to natural wood (12.82 MJ m–2). To conduct a qualitative analysis of the molecular structures found in the pyrolysis products, the researchers employed pyrolysis gas chromatography/mass spectrometry (PY-GC/MS). The study’s findings indicated that carbon dioxide emerges as the primary product. Consequently, these findings suggest that the composite wood exhibits outstanding flame-retardant properties, rendering it suitable for diverse applications in everyday environments.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Shengchang Lu,Shuai Li,Qin Li,Lin Yang,Hui Zhang,Jianguo Li,Liulian Huang,Lihui Chen,Hongbo Zeng,Hui Wu
Flexible hybrid nanogenerators (HNGs) have received significant attention for their potential in harvesting mechanical energy to power portable and miniaturized portable devices. This work presents a method to fabricate flexible, durable and biodegradable electrospun polydopamine@barium titanate/cellulose acetate (PDA@BTO/CA) nanofiber films. This design integrates polydopamine (PDA) and piezoelectric barium titanate (BTO) nanoparticles within a flexible cellulose acetate (CA) matrix to enable self-powered wearable biomonitoring. The inclusion of PDA enhances the physical adhesion between BTO and CA, resulting in a significant 40% increase in voltage output. Notably, the PDA-modified composite PDA@BTO/CA demonstrates remarkable durability over 15,000 cycles and effectively detects a range of human motions (such as fist clenching, wrist bending, elbow movement, walking, running and jumping), transducing them into stable, precise electrical signals. Intriguingly, the hybrid nanogenerator device exhibits robust performance in extreme conditions, including underwater and high or low temperatures, while maintaining its good biodegradability. This work paves the way for advanced self-powered wearable biosensor devices capable of precise and reliable human motion monitoring.
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INDUSTRIAL CROPS AND PRODUCTS
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2024
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IF 5.6
Jierui Ye,Qingtian Xu,Yuebing Gao,Yipeng Liang,Qiang Wu,Guomin Wu,Siqun Wang,Pan Chen,Qian Li
Naturally occurring cellulose nanofibril (CNF) is a major component of plant cell walls and possesses numerous advantages, including a high specific surface area, exceptional strength, abundant availability, renewability, and biodegradability. However, the inherent ignitability of CNF hinders its practical application in advanced functional materials. Herein, we report a novel ternary deep eutectic solvent, designed under mild mechanical grinding, capable of converting cheap bamboo cellulose into phosphorylated cellulose nanofibrils (PCNFs) uniform fibril diameters in the range of 3 − 10 nm. The pure PCNF-fabricated film exhibited excellent flame-retardant and self-extinguishing performances (with a high limiting oxygen index of 70.2%) without adding flame-retardants. Compared with unmodified CNF, the peak heat release rate and total heat release of the PCNF films decreased by 96.7% and 96.9%, respectively. Furthermore, defibrillation significantly improved the mechanical and optical properties of the PCNF films, suggesting considerable potential for applying PCNFs in flame-retardant packaging materials.
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Materials Horizons
·
2024
·Vol. 11
·期 6
·1560-1566
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IF 12.2
Lewen Huang,Yibao Li,Zhong Zheng,Yun Bai,Thomas P. Russell,Changfei He
Cellulose, often considered a highly promising substitute for petroleum-based plastics, offers several compelling advantages, including abundant availability, cost-effectiveness, environmental friendliness, and biodegradability. However, its inherent highly crystalline structure and extensive hydrogen-bonded network pose challenges for processing and recycling. In this study, we introduce the concept of cellulose vitrimers (CVs), wherein dynamic bonds are incorporated to reconfigure the hydrogen-bonded network, resulting in a mechanically robust, highly transparent material. CVs exhibit exceptional malleability, thermal stability, and noteworthy resistance to water and solvents. Due to the dynamic bond disassociation, CVs can be effectively chemically recycled using a well-established “dissolution-and-reforming” process. Moreover, CVs have proven successful as flexible substrate materials for organic solar cells, outperforming traditional petroleum-based polyethylene naphthalate (PEN). Given these advantages, CVs have the potential to replace conventional petroleum-based materials as recyclable and environmentally friendly alternatives, particularly within the realm of electronic devices and displays.
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