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Facile designing a superhydrophobic anti-icing surface applied for reliable long-term deicing

Chinese Chemical Letters 2023年第11期34卷 269-274页

作者： Feng Liu Xin Wang Meng Wang Yao Li Zishuai Jiang Wenbo Zhang Haiyue Yang Chengyu Wang Shih-Hsin Ho Key Laboratory of Bio-based Material Science&Technology of Ministry of Education Northeast Forestry UniversityHarbin 150040China State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbin 150001China Center for Composite Materials and Structure Harbin Institute of TechnologyHarbin 150001China

While superhydrophobic coatings have shown promise as potential anti-icing coatings, the surface roughness of these coatings is prone to damage during repeated icing-deicing cycles. Herein, two kinds of superhydrophobic anti-icing coatings are prepared from organic resin and micro-nano particles using two strategies, and their excellent anti-icing properties are also investigated. However, superhydrophobic surface Ⅰ(SF1), prepared by first strategy, cannot be used for extended periods of time due to irreversible damage to the surface roughness during the icing–deicing process. Finite element simulations and experimental studies are preformed to investigate the fatal issue of such roughness damage. In contrast,the anti-icing properties of superhydrophobic surface Ⅱ(SF2), prepared by second strategy, can easily regain through a simple sandpaper abrasion treatment even the surface roughness was damaged during the icing–deicing process. These exploratory results and SF2 preparation strategy provide a facile design of anti-icing coating, and the derived restorable anti-icing coating is expected to be useful for a wide application.

关键词： Anti-icing Superhydrophobic Roughness Restorable Sandpaper abrasion

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biocomposites of Polylactic Acid Reinforced by DL-Lactic Acid-Grafted Microfibrillated Cellulose

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Journal of Renewable materials 2022年第11期10卷 2961-2972页

作者： Chaodong Liu Yutong Yang Boyu Cui Weihong Wang Key Laboratory of Bio-Based Material Science and Technology(Ministry of Education) Material Science and Engineering CollegeNortheast Forestry UniversityHarbin150040China

Microfibrillated cellulose(MFC)is often added to polylactic acid(PLA)matrixes as a reinforcing filler to obtain fully-biodegradable composites with improved mechanical ***,the incompatibility between MFC and the PLA matrix limits the mechanical performance of MFC-reinforced PLA *** this paper,DL-lactic acid-grafted-MFC(MFC-g-DL)was used to improve the compatibility with *** composites were prepared by melt extrusion and hot-cold *** tensile strength of the PLA/MFC-g-DL composite increased by 22.1%compared with that of PLA after adding 1%*** electron microscopy(SEM),differential scanning calorimetry(DSC),and dynamic thermomechanical analysis(DMA)were used to explore the enhancement *** energy dissipation in the MFC network and the improved compatibility between PLA and MFC-g-DL played important roles in the *** SEM results showed that there was a closer combination between PLA and *** DSC results showed that the addition of cellulose changed the glass transition temperature,melting temperature,and crystallization temperature of *** TG results showed that the initial and maximum decomposition temperature were lower than those of *** ultraviolet spectra showed that the composite had good transparency at a low concentration of MFC-g-DL.

关键词： Polylactic acid microfibrillated cellulose tensile properties transparency

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Selective Emission Fabric for Indoor and Outdoor Passive Radiative Cooling in Personal Thermal Management

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Nano-Micro Letters 2025年第8期 314-327页

作者： Haijiao Yu Jiqing Lu Jie Yan Tian Bai Zhaoxuan Niu Bin Ye Wanli Cheng Dong Wang Siqi Huan Guangping Han Key Laboratory of Bio-Based Material Science and Technology (Northeast Forestry University) Ministry of Education Department of Astronautical Science and Mechanics Harbin Institute of Technology (HIT)

Radiative cooling fabric creates a thermally comfortable environment without energy input, providing a sustainable approach to personal thermal management. However, most currently reported fabrics mainly focus on outdoor cooling, ignoring to achieve simultaneous cooling both indoors and outdoors, thereby weakening the overall cooling performance. Herein, a full-scale structure fabric with selective emission properties is constructed for simultaneous indoor and outdoor cooling. The fabric achieves 94% reflectance performance in the sunlight band（0.3–2.5 μm） and 6% in the mid-infrared band（2.5–25 μm）, effectively minimizing heat absorption and radiation release obstruction. It also demonstrates 81% radiative emission performance in the atmospheric window band（8–13 μm） and 25% radiative transmission performance in the mid-infrared band（2.5–25 μm）, providing 60 and 26 W m-2net cooling power outdoors and indoors. In practical applications, the fabric achieves excellent indoor and outdoor human cooling, with temperatures 1.4–5.5℃ lower than typical polydimethylsiloxane film. This work proposes a novel design for the advanced radiative cooling fabric, offering significant potential to realize sustainable personal thermal management.

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Electrocatalytic Lignin Valorization into Aromatic Products via Oxidative Cleavage of Cα-Cβ Bonds

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研究（英文） 2023年第12期6卷 106-117页

作者： Jianing Xu Juan Meng Yi Hu Yongzhuang Liu Yuhan Lou Wenjing Bai Shuo Dou Haipeng Yu Shuangyin Wang Key Laboratory of Bio-based Material Science and Technology of Ministry of Education Northeast Forestry UniversityHarbin 150040China School of Resources and Environmental Engineering Jiangsu University of TechnologyChangzhou 213001China State Key Laboratory of Chem/Bio-Sensing and Chemometrics College of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082China

Lignin is the most promising candidate for producing aromatic compounds from ***,the challenge lies in the cleavage of C-C bonds between lignin monomers under mild conditions,as these bonds have high dissociation *** oxidation,which allows for mild cleavage of C-C bonds,is considered an attractive *** achieve low-energy consumption in the valorization of lignin,the use of highly efficient electrocatalysts is *** this study,a meticulously designed catalyst consisting of cobalt-doped nickel(oxy)hydroxide on molybdenum disulfide heterojunction was *** presence of molybdenum in a high valence state promoted the adsorption of tert-butyl hydroperoxide,leading to the formation of critical radical *** addition,the incorporation of cobalt doping regulated the electronic structure of nickel,resulting in a lower energy *** a result,the heterojunction catalyst demonstrated a selectivity of 85.36％for cleaving theCα-Cβbond in lignin model compound,achieving a substrate conversion of 93.69％under ambient *** addition,the electrocatalyst depolymerized 49.82 wt％of soluble fractions from organosolv lignin(OL),resulting in a yield of up to 13 wt％of aromatic ***,the effectiveness of the prepared electrocatalyst was also demonstrated using industrial Kraft lignin(KL).Therefore,this research offers a practical approach for implementing electrocatalytic oxidation in lignin refining.

关键词： Electrocatalysts

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Unraveling the Rheology of Nanocellulose Aqueous Suspensions:A Comprehensive Study on biomass-Derived Nanofibrillated Cellulose

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Journal of Renewable materials 2024年第3期12卷 443-455页

作者： Mingyue Miao Fei Wang Qing Li Longchen Tao Chenchen Dai Yu Liu Shujuan Han Wenshuai Chen Ping Lu Key Laboratory of Bio-Based Material Science and Technology Ministry of EducationNortheast Forestry UniversityHarbin150040China Department of Chemistry and Biochemistry Rowan UniversityGlassboroNew Jersey08028USA

The rheological properties of nanocellulose aqueous suspensions play a critical role in the development of nanocellulose-based bulk ***-crystalline,high-aspect ratio,and slender nanofibrillated cellulose(NFC)were extracted from four biomass *** cellulose nanofibrils and nanofibril bundles formed inter-connected networks in the NFC aqueous *** storage moduli of the suspensions with different concentrations were higher than their corresponding loss *** the concentration increased,the storage and loss modulus of NFC dispersion *** the shear rate increased to a certain value,there were differences in the changing trend of the rheological behavior of NFC aqueous suspensions derived from different biomass resources and the suspensions with different solid *** dispersion’s storage and loss modulus increased when the temperature rose to nearly 80℃.We hope this study can deepen the understanding of the rheological properties of NFC colloids derived from different biomass resources.

关键词： biomass resources nanofibrillated cellulose high-pressure homogenizer suspension rheology properties

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biodegradable,strong,and clear wood package for plastic alternative

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Nano Research 2024年第9期17卷 8531-8541页

作者： Jianfu Tang Xueqin Fan Haozhou Huang Xiaofei Dong Xueqi Li Peiru Wang Ran Yin Yanjun Xie Jian Li Gang Tan Zhenqian Pang Wentao Gan Key Laboratory of Bio-based Material Science&Technology(Ministry of Education) Northeast Forestry UniversityHarbin 150040China Department of Architecture College of Civil Engineering and ArchitectureZhejiang UniversityHangzhou 310027China Smart Materials for Architecture Research Lab Innovation Center of Yangtze River DeltaZhejiang UniversityJiaxing 314100China Heilongjiang Key Laboratory of Complex Traits and Protein Machines in Organisms Northeast Forestry UniversityHarbin 150040China

Using biodegradable material derived from renewable resources as petroleum-based plastics replacement is a promising way towards sustainable ***,the insufficient mechanical properties and complex manufacturing process of bioplastics still need to be improved for high-quality food ***,we report a top-down strategy to transform natural wood into a clear wood packaging film through scalable delignification and polyvinyl alcohol(PVA)*** wood packaging film demonstrates a laminated structure with completely collapsed cell walls and PVA intertwined together after energy-saving air drying,resulting in high light transmittance with low haze,good mechanical performance,and high barrier performance for oxygen and water *** dynamics simulations reveal the underlying fracture mechanism between cellulose and PVA,which effectively enhances the Young’s modulus and strength of the wood packaging *** findings contribute to the development of biodegradable and strong packaging materials,as well as other food-related applications,using sustainable wood.

关键词： wood food package mechanical enhancement plastic replacement biodegradability

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Worm-like ordered mesoporous carbon from liquefied wood:Morphological manipulation by varying hydrothermal temperature

Aggregate

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Aggregate 2024年第4期5卷 416-425页

作者： Yang Li Zhenwei Wu Yanhong Liu Kun Zhang Sha Luo Wei Li Shouxin Liu Key Laboratory of Bio-based Material Science and Technology of the Ministry of Education Northeast Forestry UniversityHarbinChina Engineering Research Center of Advanced Wooden Materials of the Ministry of Education Northeast Forestry UniversityHarbinChina

The hydrothermal/soft templating method is an effective way to synthesize ordered mesoporous carbon(OMC),yet the mechanism of this strategy is not well ***,a hydrothermal temperature-controlled approach is developed to precisely synthesize OMCs with well-defined morphologies from liquefied wood(LW).As the hydrothermal temperature increases from 130 to 210◦C,the hydrophilicity of the hydrophilic blocks decreases accompanied by the increase of the rel-ative volume of the hydrophobic block,resulting in the packing parameter p of micelles changing from p≤1/3 to 1/3

关键词： hydrothermal temperature-controlled liquefied wood ordered mesoporous carbon

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A Scalable Bacterial Cellulose Ionogel for Multisensory Electronic Skin

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Research 2022年第4期2022卷 249-259页

作者： Geyuan Jiang Gang Wang Ying Zhu Wanke Cheng Kaiyue Cao Guangwen Xu Dawei Zhao Haipeng Yu Key Laboratory on Resources Chemicals and Materials of Ministry of Education Shenyang University of Chemical TechnologyShenyang 110142China Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education Northeast Forestry UniversityHarbin 150040China Tianjin Key Laboratory of Pulp and Paper Tianjin University of Science and TechnologyTianjin 300457China

Electronic skin(e-skin),a new generation of flexible electronics,has drawn interest in soft robotics,artificial intelligence,and biomedical ***,most existing e-skins involve complex preparation procedures and are characterized by singlesensing capability and insufficient ***,we report on a one-step strategy in which a thermionic source is used for the in situ molecularization of bacterial cellulose polymeric fibers into molecular chains,controllably constructing an ionogel with a scalable mode for *** synergistic effect of a molecular-scale hydrogen bond interweaving network and a nanoscale fiber skeleton confers a robust tensile strength(up to 7.8 MPa)and high ionic conductivity(up to 62.58 mS/cm)on the as-developed *** by the tongue to engineer the perceptual patterns in this ionogel,we present a smart e-skin with the perfect combination of excellent ion transport and discriminability,showing six stimulating responses to pressure,touch,temperature,humidity,magnetic force,and even *** study proposes a simple,efficient,controllable,and sustainable approach toward a low-carbon,versatile,and scalable e-skin design and structure-performance development.

关键词： string versatile chains

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Self-Assembled MXene Supported on Carbonization-Free Wood for a Symmetrical All-Wood Eco-Supercapacitor

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ACS Applied materials and Interfaces 2024年第28期16卷 36322-36332页

作者： Yu, Yuan Chen, Wei-Hsin Wang, Xin Sun, Xiaohan Jiang, Zishuai Li, Meichen Fu, Xinmiao Yang, Haiyue Li, Menggang Wang, Chengyu Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education Northeast Forestry University Harbin150040 China Department of Aeronautics and Astronautics National Cheng Kung University Tainan701 Taiwan School of Materials Science and Engineering Peking University Beijing100871 China

As an emerging two-dimensional (2D) material, MXene has garnered significant interest in advanced energy storage systems, yet the stackable structure, poor mechanical stability, and lack of moldability limit its large-scale applications. To address this challenge, herein, the self-assembly of MXene on carbonization-free wood was obtained to serve as high-performance electrodes for symmetrical all-wood eco-supercapacitors by a steam-driven self-assembly method. This method can be implemented in a low-temperature environment, significantly simplifying traditional high-temperature annealing processes and generating minimal impact on the environment, human health, and resource consumption. The environmentally friendly steam-driven self-assembly strategy can be further extended into various wood-based electrodes, regardless of the types and structures of wood. As a typical platform electrode, the optimized MXene@delignified balsa wood (MDBW) achieves high areal capacitance and specific capacitance values of 2.99 F cm-2 and 580.55 F g-1 at an extensive mass loading of 5.16 mg cm-2, respectively, with almost loss-free capacitance after 10,000 cycles at 50 mA cm-2. In addition, an all-solid-state symmetrical all-wood eco-supercapacitor was further assembled based on MDBW-20 as both positive and negative electrodes to achieve a high energy density of 19.22 μWh cm-2 at a power density of 0.58 mW cm-2. This work provides an effective strategy to optimize wood-based electrodes for the practical application of biomass eco-supercapacitors. © 2024 American Chemical Society.

关键词： Capacitance

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Cationic CO_(2)-based Waterborne Polyurethane with High Solid Content and Excellent Ageing Resistance

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Chinese Journal of Polymer science 2022年第10期40卷 1183-1192,I0008页

作者： Hong-Ming Zhang Guang-Ping Han Wan-Li Cheng Shun-Jie Liu Xian-Hong Wang Key Laboratory of Bio-based Material Science and Technology(Ministry of Education) Northeast Forestry UniversityHarbin 150040China Key Laboratory of Polymer Ecomaterial Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 13022China

High solid content CO_(2)-based cationic waterborne polyurethanes(CWPUs)were prepared using CO_(2)-polyols as soft segment and Nmethyl diethanolamine(MDEA)as hydrophilic *** resulting stable aqueous dispersion displayed a high solid content of 52%with a low MDEA loading of 3.52 wt%.This novel structural CWPU can provide excellent adhesive strength,whose T-peel strength could reach 173.48N/5cm,20%higher than that of ester-based cationic waterborne polyurethane(87.55 N/5cm).The CO_(2)-based CWPU film showed only 2 wt%swelling percentage after 240 min immersion in water,and no change was observed during its immersion in 5 wt%sodium hydroxide *** tensile strength of CO_(2)-WPUs dropped slowly to 91.2%after 480 min immersion in a 5 wt%sodium hydroxide solution,whereas that of esterbased CWPUs dropped quickly to 32%after 240 min and their mechanical properties were lost after 360 min ***,the retention of the tensile strength of the CO_(2)-CWPUs was 81.5%even after 720 min immersion in 10 wt%H_(2)O_(2) solution,while it was only ca.38%for the ester-based *** results indicated that the cationic CO_(2)-based CWPU may be promising waterborne adhesive with outstanding ageing resistance due to its synergistic effect from carbonate and ether groups of CO_(2)-polyol structure.

关键词： Cationic waterborne polyurethane CO_(2)-polyol High solid content Hydrolysis/oxidation resistance

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