CELLULOSE
·
2024
·Vol. 31
·期 7
·4381-4393
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IF 4.9
Shi Xuehui,Ji Hairui,Ji Xingxiang,Tian Zhongjian,Chen Jiachuan
Heavy metal ions and dyes in wastewater pose a severe hazard to ecological system and human health. This study used sulfamic acid (SA) to modify cellulose for adsorbent material preparation. The results from the structural characterization indicated that cellulose was successfully modified by introducing sulfonic acid groups to obtain sulfamic acid modified cellulose (SAMC). Subsequently, SAMC was prepared into spheres via being dissolved in ionic liquid and obtaining in antisolvent. The adsorption performance of SAMC aerogel spheres was investigated using methylene blue (MB) and lead ions (Pb 2+ ). The maximum absorption capacity of SAMC aerogel spheres to MB and Pb 2+ achieved 14.53 mg/g and 112.15 mg/g, respectively. The adsorption process conformed to the pseudo-second-order (PSO) model and Langmuir model. The adsorption mainly involved chemical action via coordination interaction between -SO3 2− and MB/Pb 2+ . Thermodynamic experiments confirmed that the adsorption process in the experiment was a spontaneous endothermic process. Therefore, this study provided a simple adsorbent production method for wastewater treatment. Graphical abstract
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Jun Shi,Tao Huang,Ruoyu Wu,Jiani Wu,Yulong Li,Yongxi Kuang,Hongmei Xing,Wenli Zhang
Designing carbon materials with specific oxygen-containing functional groups is very attractive for the precise decoration of carbon electrode materials and the basic understanding of specific charge storage mechanisms, which contributes to the further development of high-performance carbon materials for energy storage and conversion applications. In this contribution, a hydroxyl-rich micropore-dominated porous carbon material was obtained by direct carbonization of cellulose. The content of oxygen atoms in hydroxyl form in the obtained carbon is nearly 6 at.%. With the pyrolysis temperature changed, the macroscopic morphology, the specific surface area, surface functional groups, and graphitization degree of the carbon materials were changed strongly. Besides, the carbon material obtained with a carbonization temperature of 900 °C (C9) showed enhanced specific capacitance in sulfuric acid, sodium hydroxide, and sodium sulfate aqueous electrolytes, which mainly originates from the contribution of pseudocapacitance. The pseudocapacitance mainly depends on the presence of surface hydroxyl functional groups. Besides, the pseudocapacitance value of C9 material in neutral electrolytes (151.34 F g −1 ) is about twice that in acidic (75.9 F g −1 ) and alkaline (75.78 F g −1 ) electrolytes.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Wenlu Luo,Wei Lu,Qin Xiang,Lianlong Zhan,Xun Yang,Hanbing Jiang,Cailin Xu,Hui He
The utilization of the solar-driven CO 2 desorption of carbon capture materials opens a promising avenue to reduce energy consumption in the carbon capture process. A crucial aspect is the careful coordination of materials' adsorption capacity and regeneration temperature. In this study, a photothermal responsive carbon capture material was developed by incorporating a photothermal responsive cellulose nanofiber matrix skeleton with a temperature-sensitive Pluronic® F-127 and polyethyleneimine. These components formed a staggered network through crosslinking with epichlorohydrin. The devised preparation strategy demonstrated a remarkable conversion rate of 99% for the reaction reagents. The resulting carbon capture material exhibited a high amino density of 14.18 mmol/g and a substantial adsorption capacity of 6.92 mmol/g. Notably, the shrinkage of Pluronic® F-127 molecular chains at elevated temperatures led to an increased surface electrostatic potential and the passivation of amino groups. This transformation endowed the material with a solar-driven regeneration temperature as low as 55 °C, representing an efficient approach to reduce energy consumption during the regeneration process of carbon capture materials.
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JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Yijiang You,Li Liu,Guangfeng Wu
With the rapid advancement of the printing and dyeing industry, water pollution has emerged as a prominent environmental issue, particularly dye wastewater. In order to construct polymeric adsorbents with rich functional groups for efficient adsorption of dye wastewater, hydrogel spherical adsorbent SA/CMC-Kaolin was prepared by using sodium alginate (SA) as the hydrogel skeleton material, carboxymethyl cellulose (CMC) and kaolin as the strength-reinforcing materials. FT-IR, SEM, XRD, and TG were utilized for comprehensive characterization of the microbeads' characteristics and adsorption mechanism. SA/CMC-K composite microbeads were investigated for the adsorption characteristics of methylene blue (MB) in aqueous solution. Adsorption kinetics and thermodynamic models were employed to analyze the adsorption process. Under optimal conditions, SA/CMC-K microbeads demonstrated superior adsorption efficiency for MB, with a maximum adsorption capacity of 84.63 mg/g, a bio-based adsorbent with a high adsorption capacity. The adsorption process exhibited better agreement with the Langmuir isotherm equation and the pseudo-second-order kinetic model. Besides, SA/CMC-K composite microbeads maintained 71.74% adsorption efficiency after five cycles. Overall, the prepared microbeads, which are economical and environmentally friendly, are promising for the absorption of dye wastewater.
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Journal of Food Measurement and Characterization
·
2024
·
IF 2.9
Zhang Tong,Wang Hongyue,Pan Xiaoya,Zhang Xindi,Shi Caihong,Zhang Xiangrong
In this study, quercetin in cellulose porous microspheres were prepared by quasi-emulsion solution diffusion method. The formulation of microspheres was optimized by Box-Behnken Design and their antioxidant activity was evaluated. Morphological structures and physicochemical properties of the microspheres were investigated. The findings of porous microspheres particle size ranged from 150 to 200 μm. The encapsulation efficiency and loading capacity were of 90.32% and 20.54%. Respectively, prepared using polyvinyl alcohol (0.16%), ethyl cellulose and quercetin (41:19, w/w), stirred in dichloromethane/ethanol solution (4:1, v/v). The scanning electron microscopy confirmed porous structure of the microsphere surface. Fourier transform infrared spectroscopy revealed structural changes between quercetin and ethyl cellulose. X-ray diffraction and thermal analysis showed that the encapsulated quercetin was amorphous. Compared with free quercetin, the antioxidant capacity and stability of quercetin in porous microspheres were significantly improved. This research reveals the development of porous microsphere carrier that facilitated improved antioxidant activity and stability of quercetin.
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CARBOHYDRATE POLYMERS
·
2024
·
IF 10.7
Kang Yang,Chao Duan,Zixuan Meng,Yuanmei Liu,Yueyin Liu,Zengyin Xie,Yonghao Ni
Water collection from atmospheric fog was deemed to be an efficient and sustainable strategy to defuse the freshwater scarcity crisis. Fog harvesting and trapping fibers, therefore, has aroused extensive interest due to their ease of preparation, weave, and use. However, the traditional fibers used in fog collector usually have a low fog collection capacity and efficiency because of their unreasonable morphology and structure design. Herein, we proposed a simple process to construct advanced fibers using a one-step wet spinning of hydrophobic polyvinylidene fluoride (PVDF) and hydrophilic cellulose mixture fiber for fog harvesting. The as-prepared fibers featured a petaloid structure and surface hydrophobic gradient, thus facilitating fog deposition, water droplet formation, and drainage. The unique longitudinal groove structure above enabled the hybrid fiber to achieve an excellent fog collection efficiency of 2750.26 mg/cm 2 /h per monofilament , which outstripped most of other fiber materials. When woven these fibers were in a longitudinal array network with an interval of 1 mm, and the fog collection efficiency can maintain at 10.30 L/m 2 /h. Therefore, this work provided a new strategy for further exploration of effective fog collection by cellulose-based fiber materials.
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CARBOHYDRATE POLYMERS
·
2024
·
IF 10.7
Fang Tian,Shuyi Xu,Miaoyu Gan,Baihui Chen,Qian Luan,Luyun Cai
Fucoxanthin (FX) has various excellent biological properties but suffers from poor bioavailability. In this work, we build a bionic cell wall model using TEMPO (2,2,6,6-tetramethyl-1-piperidinyloxy)-oxidized cellulose. The bionic cell wall enhances the environmental stability of the liposomes and serves as a pH-responsive mechanism. The coating processes protect the structure of liposomes and fucoxanthin under the acidic conditions of the stomach. The bionic cell wall disperses and releases the fucoxanthin in simulated intestinal fluid (SIF). Overall, the protective and release capabilities highlight the potential of cellulose in a bionic cell wall model and provide diversity for the structural design of carriers for delivering functional bioactive components.
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CELLULOSE
·
2024
·
IF 4.9
Liu Huijun,Chen Li,Peng Yan,Li Xia,Zhang Haiqiang,Chen Yanhao,Li Zhi,Dai Fangyin
Hydrogels can relieve wound pain and provide a moist environment for wound healing. Although hydrogels based on natural materials have proven to be biocompatible and biodegradable, their antibacterial and anti-inflammatory properties are not desirable. Natural extracts with antimicrobial and antioxidant properties are becoming increasingly attractive because of their environmentally friendly nature and good biocompatibility. Herein, composite cellulose/silk fibroin/polyacrylic acid hydrogels based on natural materials were fabricated by crosslinking between oxidized cellulose and silk fibroin together with radical polymerization of acrylic acid. The fabricated hydrogels displayed a uniform hierarchical topography with high porosity, as well as good mechanical properties, swelling properties, air permeability and biocompatibility. With the addition of tea polyphenols to natural extracts, the composite hydrogels exhibited significant antimicrobial and antioxidant properties such that they could prevent bacterial infection and relieve wound inflammation in the inflammation stage and could promote the synthesis of extracellular matrix (ECM), angiogenesis, collagenization and re-epithelization during wound healing. The tea polyphenols/cellulose/silk fibroin/polyacrylic acid hydrogels fabricated in this study can accelerate wound healing, demonstrating their great potential for application in wound dressings.
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JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
·
2024
·Vol. 39
·期 3
·596-605
·
IF 1.3
Hou Zhaoxia,Wang Haoran,Qu Chenying
Bacterial cellulose (BC) was innovatively combined with zwitterionic copolymer acrylamide and sulfobetaine methacrylic acid ester [P(AM-co-SBMA)] to build a dual-network porous structure gel polymer electrolytes (GPEs) with high ionic conductivity. The dual network structure BC/P(AM-co-SBMA) gels were formed by a simple one-step polymerization method. The results show that ionic conductivity of BC/P(AM-co-SBMA) GPEs at the room temperature are 3.2×10 −2 S/cm @1 M H 2 SO 4 , 4.5×10 −2 S/cm @4 M KOH, and 3.6×10 −2 S/cm @1 M NaCl, respectively. Using active carbon (AC) as the electrodes, BC/P (AM-co-SBMA) GPEs as both separator and electrolyte matrix, and 4 M KOH as the electrolyte, a symmetric solid supercapacitors (SSC) (AC-GPE-KOH) was assembled and testified. The specific capacitance of AC electrode is 173 F/g and remains 95.0% of the initial value after 5 000 cycles and 86.2% after 10,000 cycles.
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CARBOHYDRATE POLYMERS
·
2024
·
IF 10.7
Pengyu He,Dawei Wang,Ruizhu Zheng,Hao Wang,Lina Fu,Guoliang Tang,Zhijun Shi,Yiping Wu,Guang Yang
Infection-associated complications and repair failures and antibiotic resistance have emerged as a formidable challenge in hernia repair surgery. Consequently, the development of antibiotic-free antibacterial patches for hernia repair has become an exigent clinical necessity. Herein, a GBC/Gel/LL37 biological patch (biopatch) with exceptional antibacterial properties is fabricated by grafting 2-Methacryloyloxyethyl trimethylammonium chloride (METAC), a unique quaternary ammonium salt with vinyl, onto bacterial cellulose (GBC), followed by compounding with gelatin (Gel) and LL37. The GBC/Gel/LL37 biopatch exhibits stable swelling capacity, remarkable mechanical properties, flexibility, and favorable biocompatibility. The synergistic effect of METAC and LL37 confers upon the GBC/Gel/LL37 biopatch excellent antibacterial efficacy against Staphylococcus aureus and Escherichia coli , effectively eliminating invading bacteria without the aid of exogenous antibiotics in vivo while significantly reducing local acute inflammation caused by infection. Furthermore, the practical efficacy of the GBC/Gel/LL37 biopatch is evaluated in an infected ventral hernia model, revealing that the GBC/Gel/LL37 biopatch can prevent the formation of visceral adhesions, facilitate the repair of infected ventral hernia, and effectively mitigate chronic inflammation. The prepared antibacterial GBC/Gel/LL37 biopatch is very effective in dealing with the risk of infection in hernia repair surgery and offers potential clinical opportunities for other soft injuries, exhibiting considerable clinical application prospects.
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ACS Applied Polymer Materials
·
2025
·
IF 4.7
Changmei Lin,Zhenhao Pei,Jun Chen,Jinxin Lan,Hai Huang,Xiaojuan Ma,Shilin Cao
Tactile sensors are an important area in developing electronic skins and human–machine interfacing. Herein, we reported an eco-friendly cellulose paper based tactile sensor driven by a triboelectric nanogenerator (TENG). Enabled by the surface modification of polymethylhydrosiloxane (PMHS) and polypyrrole (PPy), the triboelectric negative performance and conductivity of cellulose paper were improved; therefore, the modified cellulose paper could be applied to the triboelectric negative material and electrode for TENG. At the contact and separation mode (CS mode), the short-circuit current (ISC), open-circuit voltage (VOC), and power density of the corresponding device were improved to 0.52 μA, 11.6 V, and 736.9 μW/m2. In addition, a single-electrode TENG based on this modified cellulose paper was also obtained by pairing it with human skin. The results indicated that this single-electrode TENG could generate a voltage of 23.8 V, current of 1.1 μA, and surface charge of 4.3 nC. Meanwhile, a tactile sensor for written stroke recognition based on the single-electrode TENG was also demonstrated.
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COMPOSITES COMMUNICATIONS
·
2024
·
IF 6.5
Tiange Chen,Pan Cheng,Mingyue Li,Yuxi Wang,Peiling Tang,Yinuo Zhang,Qihao Guo,Qin Cheng,Tao Mei,Ke Liu,Dong Wang
Anion-exchange chromatography (AEC) is recognized as a highly effective approach for the purification of immunoglobulin G (IgG). This study introduces an innovative strategy that employs waste cellulose filter paper in the production of AEC media. A quaternized cellulose fiber membrane (CFM-QCS) was successfully fabricated that cellulose fibers were as a structural framework, glutaraldehyde (GA) as a crosslinking agent, and quaternary chitosan (QCS) as a modifying agent. Morphological and chemical characterization revealed that GA and QCS were uniformly crosslinked on the surface of the cellulose fibers, resulting in excellent mechanical properties in both dry and wet states. Benefiting from its 3D network scaffold structure, CFM-QCS demonstrated a high adsorption capacity for bovine serum albumin (BSA), with static and dynamic adsorption capacities of 605.15 mg/g and 88.63 mg/ml, respectively. After treated with extreme conditions and 10 cyclic adsorption and elution, the adsorption capacity of CFM-QCS remains almost unchanged, highlighting its excellent stability. Additionally, a CFM-QCS packed chromatography column exhibited high flux of 10.38 L/h at 0.1 MPa, which can efficiently separate IgG from a mixed solution in the presence of BSA and IgG by gravity-driven. This work presents a straightforward approach for preparing high-performance ion-exchange chromatography membranes for IgG separation.
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