ACS Sustainable Chemistry & Engineering
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2024
·
IF 7.1
Dekai Meng,Yunjie Ju,Ailing Xu,Yonggui Wang,Dong Wang,Yanjun Xie,Zefang Xiao,Haigang Wang
The rapid advancement of phase change material (PCM) has spurred numerous innovations, such as the use of reversible optical properties of solid–liquid phase change materials in the manufacturing of optical devices. However, these materials often exhibit poor stability and low heat storage performance. Here, a method for producing cellulose-based phase change gel (PCG) is proposed. The addition of carboxymethyl cellulose (CMC) significantly increased the tensile strength of the phase change gel postmelting, resulting in a remarkable 1131% increase compared with that of the CMC-free gels. Within this gel, poly(ethylene glycol) (PEG) is embedded as a phase change filler in a dual network cross-linked by hydroxyethyl methacrylate (HEMA) and CMC, preventing leaks and enhancing shape stability. The maximum enthalpy values for melting and solidification reach 90.6 and 88.4 J/g, respectively. The resulting gel exhibits a high degree of haze that effectively prevents glare, resulting in optical transparency changes ranging from about 25 to 78% during phase transitions. The preparation process of these phase change gels involves no toxic or harmful solvents, ensuring an environmentally friendly and straightforward approach. This expands research opportunities in phase change materials for intelligent optical devices, thermal energy management, and beyond.
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高影响因子
LANGMUIR
·
2024
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IF 3.7
Tianyun Zhang,Yanci Wang,Yu Li,Yuan Li,Xiangye Li,Peiyao Dou,Fen Ran
In order to alleviate the dendrite problem of zinc-ion batteries, a gel electrolyte is prepared by Maillard reactions occurring between hydrolyzed wool keratin and carboxymethyl cellulose under heating conditions. The prepared gel electrolyte with the addition of hydrolyzed wool keratin possesses good mechanical properties, and its maximum breaking strength, Young’s modulus, and elastic modulus are 58.7, 10.77 MPa, and 157.73 MJ m2, respectively, which are far superior to those of the pure carboxymethyl cellulose gel electrolyte. Because hydrolyzed wool keratin includes amino acids and polypeptides, the ionic conductivity of the prepared gel electrolyte is improved. More importantly, amino and carboxyl groups introduced by hydrolyzed wool keratin contribute to uniform deposition of zinc ions and ease dendrite growth. The assembled symmetric battery was stable for 600 h at a current density of 0.5 mA cm–2 with a capacity of 0.5 mAh cm–2. Combined with a NH4V4O10 cathode, a full battery provides a cycling stability of over 2000 h with a Coulomb efficiency of 98.02%.
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PubMed
高影响因子
Gels
·
2024
·Vol. 10
·期 3
·210
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IF 5
Sizhao Zhang,Kunming Lu,Yangbiao Hu,Guangyu Xu,Jing Wang,Yanrong Liao,Shuai Yu
The inherent characteristics of cellulose-derived aerogels, such as their natural abundance and environmental friendliness, make them highly interesting. However, its significant shrinkage before and after the supercritical drying procedure and low mechanical strength limit its potential application. Here, we propose a strategy to prepare cellulose diacetate aerogels (CDAAs) with low drying shrinkage, exceptional thermal insulation, and superior mechanical strength. The low drying shrinkage (radial drying shrinkage of 1.4%) of CDAAs is attributed to their relative strong networking skeletons, which are greatly formed by tert-butanol solvent exchange in exerting the interaction of reducing the surface tension force. In this case, CDAAs are eventually endowed with the low bulk density of 0.069 g cm−3as well. Additionally, as-prepared CDAAs possess an abundant three-dimensional networking structure whose pore size is concentrated in the diameter range of ~50 nm, and the result above is beneficial for improving the thermal insulation performance (thermal conductivity of 0.021 W m−1K−1at ambient environmental and pressure conditions). On the other hand, the optimal compressive stresses of CDAAs at 3% and 5% strain are 0.22 and 0.27 MPa respectively, indicating a mechanically well robustness. The above evidence demonstrates indeed the exceptional thermal insulation and superior compressive properties of CDAAs. This work may provide a new solution for developing a kind of high-performance cellulose-derived aerogel in the future.
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高影响因子
RENEWABLE ENERGY
·
2024
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IF 9
Xian Shi,Xinyi Xing,Wanni Liu,Mengya Ruan,Ying Guan,Gaojin Lyu,Hui Gao,Siquan Xu
The efficient catalytic conversion of cellulose to 5-hydroxymethylfurfural (HMF) can provide a valuable reference for the high-value utilization of biomass. In this work, a series of simple phosphate-doped hafnium oxide catalysts (x-P-HfO 2 ) were prepared, and their physicochemical properties were analyzed by ICP-OES, XRD, XPS, FTIR, SEM-EDX, N 2 adsorption-desorption isotherms, NH 3 -TPD and Py-FTIR characterizes. Detailed evaluation of the reaction conditions demonstrated the ideal catalytic performance of the x-P-HfO 2 catalysts, and the HMF yield from cellulose reached a satisfactory 61% in the water (NaCl) /tetrahydrofuran biphasic reaction system. Based on the captured intermediates and detected by-products, possible catalytic pathways are summarized. Meanwhile, the hydrothermal stability of the catalyst was also investigated, and the reason for its performance degradation after five cycles was determined to be the loss of useful Brønsted active sites. In addition, the effects of the phosphating and sulfating modification approaches on the catalyst activity were also compared, verifying that the introduction of phosphate is more conducive to the catalyst expressing high activity for the formation of HMF from cellulose.
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高影响因子
CELLULOSE
·
2024
·Vol. 31
·期 10
·6211-6224
·
IF 4.9
Wang Siqi,Dai Xiao,Fu Dong,Wang Fan,Zhang Lili,Shen Jun
Two novel chiral nematic cellulose nanocrystal (CNC) composite films composed of CNCs, gluconic acid (GA), polyvinyl pyrrolidone or polyacrylamide (CNC-GA-PVP and CNC-GA-PAM) were fabricated mainly by evaporation-induced self-assembly process. The visible iridescent color and chiral nematic structure of the obtained CNC-based films could be readily regulated by altering the content of GA in a wide color range. Both CNC composite films possessed good tensile strength. Worthy to be mentioned, the CNC-GA-PAM films exhibited rather high flexibility (elongation reached 222.53%) and could be curled into any shape, indicating the effective contribution of the polymer cross-linked networks from the non-ionic PAM. The reversible humidity responses were also observed for both CNC films with good sensitivity, probably due to the high hygroscopicity of GA. In addition, the CNC-GA-PAM films revealed exceptional water resistance without losing the regular chiral structure and structural color of CNCs. The influences of the content of tougheners and adding way of the polymers on the properties of CNC films were further investigated. This work presents a novel strategy for construction of multifunctional CNC-based nanomaterials for various applications. Graphical Abstract
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高影响因子
CELLULOSE
·
2024
·
IF 4.9
Liu Dongdong,Wang Jinkun,Liu Xiuming,Shu Dawu
The development of green processes for sustainable recycled dyeing is key to reducing the energy consumption and environmental harm caused by traditional textile dyeing. In this study, an easy fabrication process was used to obtain ZIF-8-modified cotton fabrics with a more uniform nanoparticle distribution. Furthermore, from the view point of green and clean dyeing and finishing, acid dyes could be adsorbed to modified cotton fabrics without consuming water, heat and discharging residual dyeing liquid, and it could also be used in batik to depict specific patterns. At the same time, the modified cotton fabrics had excellent UV protection and antibacterial effect while maintaining air and moisture permeability. During the adsorption of acid dyes, the modified fabric showed greater adsorption properties for the larger and more hydrophobic acid dye molecules during the adsorption of acid dyes,. The equilibrium adsorption capacity of the fabrics for acid red G and weak acid purple 4BNS were 6.21 mg·g-1 and 9.26 mg·g-1, respectively. The residual dyeing solution could be recycled to reduce wastewater discharge and environmental pressure. The prepared fabric had a UPF value of 44.695, indicating a good UV protection effect. The antibacterial activity of the modified fabrics was 94.11% against Escherichia coli and 94.30% against Staphylococcus aureus. This study provided a good idea for textile cleaning and dyeing. It not only increased the scope of the dyes used for dyeing cotton fabrics, but also provided a new strategy for the green and sustainable development of cellulosic fiber fabric dyeing.
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高影响因子
POLYMER COMPOSITES
·
2024
·
IF 4.8
Yuchen Yang,Sen Cheng,Zi Ye,Chunhua Lu,Kai Guo,Ning Zhu,Xin Hu
The interface between the polymer matrix and inorganic fillers plays a determinative role in dielectric properties of the composites. In this work, dielectric composites containing core-shell structured BaTiO 3 @Al 2 O 3 (BT@AO) nanoparticles and cyano functionalized cellulose (cyanoethyl cellulose, CEC) were prepared to achieve enhanced interface and dielectric properties. With the wide bandgap Al 2 O 3 (AO) shell, the carrier motion inspired by elevating electric filed and temperature was significantly impeded in the composites. Meanwhile, the moderate dielectric constant and surface energy of AO shell between CEC and BaTiO 3 (BT) alleviated the inhomogeneous local electric field distribution and improve the interfacial compatibility between inorganic filler and CEC matrix. As a result, enhanced dielectric properties including restrained dielectric loss (0.23 for BT@AO/CEC versus 0.51 for BT/CEC at 100 Hz), suppressed conductivity, increased breakdown strength and improved dielectric constant were accessed in the BT@AO/CEC composites. The excellent thermal conductivity of AO also offered the composites with additional advantage of low electrical conductivity at high temperature of 100°C (1.56 × 10 −10 S/cm) exhibiting two orders of magnitude smaller than that of pure CEC. Highlights Core-shell structured BaTiO 3 @Al 2 O 3 were prepared and incorporated into cyanoethylated cellulose to yield flexible nanocomposites. Carrier motion was significantly restricted by the wide band gap of Al 2 O 3 shell. Enhanced interfacial compatibility was accessed in the BaTiO 3 @Al 2 O 3 /CEC composite. Improved dielectric properties and thermal conductivity were achieved.
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高影响因子
POLYMER COMPOSITES
·
2024
·
IF 4.8
Mengyao Wang,Ding Han,Jin Jiang,Tongan Bu,Zhi Wang
To further increasing the toughness performance of thermoset resins without sacrificing their other properties is still a challenge task. In this study, the soft core–soft shell nanoparticles based on polydopamine-modified cellulose nanocrystals (P-CNC) were synthesized and seamlessly integrated with Bisphenol A-aniline benzoxazine (BA-a). Notably, the results underscore the remarkable impact of a mere 0.2 wt% of P-CNC on BA-a, boosting the impact strength of the modified system to 19.5 kJ/m 2 . This achievement represents a substantial 140.7% increase compared with pure polybenzoxazine. Moreover, the flexural strength reaches 133.4 MPa, surpassing pure polybenzoxazine by 16.2%. And the modified system exhibits a 10% weight loss temperature ( T d10 ) at 321.7°C, accompanied by a char yield of 27.6%. This holistic approach results in a notable enhancement of the toughness performance while concurrently maintaining the flexural strength and the thermal stability of the modified system. Consequently, the integration of soft core–soft shell nanoparticles emerges as a promising strategy for enhancing thermoset resin properties without undermining their existing exceptional attributes. Highlights The core–shell nanoparticles were made by dopamine and cellulose nanocrystals. The core–shell nanoparticles can enhance the toughness of polybenzoxazine. Nanoparticle-matrix interactions and deformation led to improved properties.
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高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2025
·
IF 6.2
Jie Zhuang,Xuebing Zhang,Wanhui Jin,Fan Mei,Yuqi Xu,Li He,Sirui Tan,Guangming Cai,Deshan Cheng,Xin Wang
Conductive hydrogels show high potential for application in different areas including wearable electronic devices, human-computer interaction, electronic skin, and intelligent robots. Herein, a simple one-pot method was used to develop a conductive hydrogel by mixing cellulose nanofibers (CNF), polyvinyl alcohol (PVA)-borax and sodium chloride (NaCl) doped poly(3,4-ethylenedioxythiophene):poly (styrene sulfonate) (PEDOT:PSS). The CNF was introduced into PVA-borax gel system, obtaining a hydrogel with improved mechanical, self-healing, and adhesion properties via dynamic boron-ester bonding and multiple hydrogen bond crosslinking. The as-assembled strain sensor was highly sensitive (GF=3), when stretching quickly, it had a fast response time (170 ms) and wide strain sensing range (0–300 %). Moreover, the sensor accurately monitored joint movement and weak muscle throbbing in real time when attached to human skin. Furthermore, supercapacitors were assembled with hydrogel and carbon cloth electrodes, the hydrogel-based supercapacitor has an area specific capacitance of 23.57 mF/cm 2 with a high cycle life of > 5000 cycles. This study offers guidance for constructing cellulose-based conductive hydrogel systems and promotes their application in flexible sensors and supercapacitors.
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高影响因子
CARBOHYDRATE POLYMERS
·
2025
·
IF 12.5
Liyao Dai,Jinsheng Sun,Kaihe Lv,Fengbao Liu,Yingrui Bai,Bo Liao,Dongqing Yang,Chaozheng Liu,Mei-Chun Li
The development of oil and gas from fractured reservoirs is hindered by reservoir complexity, wellbore instability, lost circulation, and formation fluid intrusion during drilling. Various plugging materials and strategies have been employed; however, physical plugging materials often suffer from mismatched particle and fracture sizes, while chemical plugging materials face challenge with low plugging strength as well as tedious operation conditions. In addition, achieving both high plugging effectiveness during use and superior degradability after service remains a challenge. Supramolecular polymer gels, with their high strength and dynamic tunability, present a promising solution. This study reports the synthesis of a supramolecular polymer gel using acrylamide, 2-acrylamide-2-methylpropanesulfonic acid, divinylbenzene, polyvinyl alcohol, and TEMPO-oxidized cellulose nanofibers (CNFs) through in situ radical polymerization. Due to the formation of covalent bonding and multiple hydrogen bonding, as well as the strong reinforcement and acid degradation capacity of CNFs, the supramolecular polymer gel demonstrates high compressive strength (0.69 MPa at a strain of 75 %), good thermal resistance (120 °C for 30 day), excellent plugging effect (> 11 MPa), and high degradation capacity (~ 94 wt%). This work provides new insights for developing high-strength, high-degradation supramolecular polymer gel as temporary plugging materials, promoting the development of oil and gas from fracturing reservoirs more efficiently and safely.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yonghe Wang,Yulan Wang,Jing Guo,Fucheng Guan,Xinbin Ji,Minghan Li,Qiang Yang,Jianbin Sun,Shi Feng,Jing Tao
In scenarios of arterial bleeding, common hemostatic agents or dressings often fail due to the loss of active components, high blood loss, and high bleeding pressure. To overcome these challenges, we have developed a novel bio-based hemostatic membrane capable of rapid hemostasis under high pressure. A biomass hemostatic membrane with rapid hemostatic function under high pressure was prepared based on polyelectrolyte electrostatic self-assembly and a “concrete reinforcement” strategy. Hyaluronic acid (HA) was sprayed by airflow to form CSH hydrogel bubbles in the Chitosan (CS) solution. Then CSH hydrogel bubbles were deposited onto cellulose nonwoven (CN) by vacuum filtration, and the CSH composite membrane was obtained after drying. The hemostatic effect of several CSH composite membrane was evaluated in the analysis of venous bleeding in vitro (1.5 KPa). Among them, CS 1 HA 0.4 @CN had a small amount of blood loss, but the amount of blood loss was only about 0.29 g, the other samples did not show any blood loss. In vitro arterial bleeding analysis, CS 1 HA 0.2 @CN showed significant hemostasis in just 20 s and successfully stabilized the blood flow at 0.002 mL/s within 40 s. Despite being subjected to a high pressure of 96.235 KPa, the CSH composite membrane effectively maintains its hemostatic capability. Consequently, it is viewed as a promising solution for emergency arterial hemostasis.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Huiyang Bian,Dan Luo,Jieying Shi,Xuelian Zhou,Tingting Xu,Huining Xiao,Hongqi Dai,Tingting Li,Chen Huang,Arthur J. Ragauskas
Developing biomass-based food packaging materials could alleviate resource scarcity and environmental pollution. This study successfully fabricated cellulose nanofibrils-based packaging films synergistically reinforced by lignin and tea polyphenols for fruit preservation. Thanks to the abundant carboxyl and hydroxyl groups in modified lignin and tea polyphenol, the composite film delivered the highest tensile strength and Young’s modulus of 230.7 MPa and 11.9 GPa, respectively. The water vapor permeability (WVP) and oxygen permeability (OP) of composite film were as low as 2.53 × 10 −11 g m −1 s −1 Pa −1 and 1.69 × 10 −16 cm m −2 s −1 Pa −1 , respectively, demonstrating excellent barrier performance. Furthermore, the composite film possessed remarkable antibacterial (100 % antibacterial activity against two types of bacteria), antioxidant (DPPH free radical scavenging activity of 90 %), and UV shielding properties (impressive UV shielding rate of 99.0 %). Strawberry preservation experiments showed that these composite films could significantly extend shelf life, owing to the excellent barrier and antimicrobial properties. Our research indicated that these composite films could be promising food packaging material compared with traditional plastic and showed great application potential in fruit preservation.
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高影响因子
危险品化学品经营许可证（带存储）