JOURNAL OF HAZARDOUS MATERIALS
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2020
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IF 9.038
Min Cao,Shu-Liang Li,Jin-Bo Cheng,Ai-Ning Zhang,Yu-Zhong Wang,Hai-Bo Zhao
Elastic biomass aerogels have attracted widespread attention but are seriously hindered by environmentally unfriendly cross-linkers and fire hazards for functional applications. This study outlines the fabrication of a fully bio-based, low fire-hazard and superelastic aerogel without any cross-linkers for excellent thermal insulation and oil absorption, via creating highly oriented wave-shaped layer microstructures and subsequently depositing nonflammable siloxane coating on the surface of the aerogel skeleton. The resultant environmental-safety aerogel showed the combined advantages of anisotropic super-elasticity, hydrophobicity , low density and high flame retardancy (limiting oxygen index value of 42%, UL-94 V-0 rating, and extremely low heat release), thus leading to many benefits for solving environmental hazards. For instance, this fire-safety biomass aerogel can be used as the high-performance thermal insulator with low thermal conductivity and high shielding efficiency. The aerogel also exhibited a great selectively oil clean-up absorption with a high absorption capacity of 117 times its own weight and excellent recyclability . Especially, due to the highly oriented microstructures, the aerogel as a filter showed the fastest separation rates of oil/water mixture (flux rate of 145.78 L h −1 g −1 ) ever reported. Such a method of preparing super-elastic biomass aerogels will provide new insights into their multifunctional applications with high environmental safety.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
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2024
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IF 8.3
Yabing Tian,Xuezhen Feng,Chao Wang,Shibin Shang,He Liu,Xujuan Huang,Jianxin Jiang,Zhanqian Song,Haibo Zhang
Thermosetting foams have limited capabilities for recycling, reprocessing, or reshaping. Moreover, most of the foaming agents currently employed in these foams are derived from organic compounds sourced from petrochemicals, thereby posing a significant environmental threat due to heightened pollution. To solve these problems, a fully biobased degradable vitrimer foam (EPC-X) was fabricated using an environmentally friendly all-in-one foaming strategy by cross-linking epoxidized malepimaric anhydride (EMPA), 1,5-diaminopentane (PDA), and 1,5-diaminopentane carbamate (PDAC) as a latent curing-blowing agent. To our delight, the vitrimer foams exhibit excellent mechanical properties (2.86 ± 0.11 MPa compressive strength) owing to their unique rigid rosin backbone and cross-linking networks. The presence of dynamic β-hydroxy ester bonds and the self-catalytic behavior of tertiary amine groups facilitate network rearrangement without requiring additional catalysts, thereby resulting in the development of EPC-X with rapid self-healing and shape memory properties. The self-healing foam could support a weight of 500 g (approximately 562 times its own mass). Moreover, these high-performance vitrimer foams can also be easily degraded in an ethanolamine (EA) or NaOH solution under mild conditions. Such a design strategy offers an alternative approach for developing superior degradable and thermal stimuli-responsive thermosetting foams.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PROGRESS IN ORGANIC COATINGS
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2024
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IF 6.5
Changhao Wu,Jixiao Wang,Fengrui Yang,Zhi Wang,Zhiye Sun
The utilization and conversion of renewable biomass is a promising strategy to attain sustainable society. Herein, full bio-based phenalkamine (FBA) was prepared using three bio-based raw materials, which were cardanol, furfural and 1,5-pentanediamine, by one-pot process based on Mannich reaction without catalyst and solvent. Then, FBA was used to cure epoxy under the condition of solvent-free, which can eliminate the negative effect of volatile organic solvents (VOCs). Attributed to the long chain, large steric hindrance and strong hydrophobicity of FBA, solvent-free FBA/epoxy coating had appropriate curing speed, non-defects morphologies, high flexibility (impact resistance height: 100 cm, bending resistant shaft diameter: 2 mm), low water absorption (0.65 wt%), and long-term protective performance (|Z| 0.01Hz = 1.23 × 10 9 Ω·cm 2 after 100 d immersion under harsh environment). Compared with partial bio-based phenalkamine (MD1041)/epoxy coating and petroleum-based phenalkamine (T31)/epoxy coating, FBA/epoxy coating had satisfactory underwater-cured protective properties (|Z| 0.01Hz >10 6 Ω·cm 2 after directly cured and immersed for 100 d in 5 wt% NaCl solution) based on the strong hydrophobicity and dense crosslink networks. Notably, FBA/epoxy coating had improved performance compared with purified FBA (PFBA)/epoxy coating, which was related to the high crosslink density coming from the residual 1,5-pentanediamine. This work provided some enlightenment to prepare solvent-free coating using full bio-based materials.
研究领域:
材料科学
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可持续化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2025
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IF 7.3
Wenxiong Zhang,Mingyu Zhu,Ming Li,Ruijia Hu,Zhiwei Chang,Chenjie Zhu,Hanjie Ying
The fabrication of fully biobased adhesives is greatly significant for the green and sustainable development of the furniture, construction, and flooring industries. However, the poor bonding strength, water sensitivity, and mildew resistance seriously hinder their promotion and application. Herein, inspired by the structure of the catechol and disulfide bonds in mussel protein and hair protein, a fully recyclable underwater biobased adhesive with excellent bonding strength, water resistance, and exceptional antimildew performance is prepared. A balance is built between interfacial adhesive force and internal cohesive force via catechol interfacial adhesion of tannic acid (TA) and the dynamic disulfide thermal-responsive network between poly(lipoic acid) (LA) and soy protein (SP). Consequently, this biobased adhesive exhibits a remarkable improvement of bonding strength by 146.81% to 2.32 MPa compared to unmodified SP. Additionally, effective interfacial interactions and stable biomimetic hydrophobic cross-linking structures significantly enhance the water-resistant wet bonding strength by 306.45% to 1.26 MPa compared to unmodified SP. Moreover, the adhesive also possesses favorable underwater adhesion properties, mildew resistance, and recyclability. This biomimetic structural design provides a novel method for the fabrication of extraordinary-performance fully biobased adhesives.
研究领域:
材料科学
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仿生学
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绿色化学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Yi Shen,Mengmeng Fan,Chuanwei Lu,Qianqian Jia,Shijian Xu,Juan Yu,Chunpeng Wang,Qiang Yong,Jifu Wang,Fuxiang Chu
Fabrication of sustainable bio-based malleable thermosets (BMTs) with excellent mechanical properties and reprocessing ability for applications in electronic devices has attracted more and more attention but remains significant challenges. Herein, the BMTs with excellent mechanical robustness and reprocessing ability were fabricated via integrating with radical polymerization and Schiff-base chemistry, and employed as the flexible substrate to prepare the capacitive sensor. To prepare the BMTs, an elastic bio-copolymer derived from plant oil and 5-hydroxymethylfurfural was first synthesized, and then used to fabricate the dynamic crosslinked BMTs through Schiff-base chemistry with the amino-modified cellulose and polyether amine. The synergistic effect of rigid cellulose backbone and the construction of dynamic covalent crosslinking network not only achieved high tensile strength (8.61 MPa) and toughness (3.77 MJ/m 3 ) but also endowed the BMTs with excellent reprocessing ability with high mechanical toughness recovery efficiency of 104.8 %. More importantly, the BMTs were used as substrates to fabricate the capacitive sensor through the CO 2 -laser irradiation technique. The resultant capacitive sensor displayed excellent and sensitive humidity sensing performance, which allowed it to be successfully applied in human health monitoring. This work paved a promising way for the preparation of mechanical robustness malleable bio-thermosets for electronic devices.
研究领域:
材料科学
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生物工程
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电子工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
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2021
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IF 8.198
Gaobo Lou,Zhewen Ma,Jinfeng Dai,Zhicheng Bai,Shenyuan Fu,Siqi Huo,Lijun Qian,Pingan Song
The design of renewable and fully biobased flame retardants (FRs) with high efficiencies and mechanical reinforcement functions for epoxy resin (EP) can greatly advance their potentials to satisfy sustainability. Although some biobased fire retardants have been successfully developed so far, most of existing biobased FRs are often not fully biobased and their syntheses normally involve the use of a large volume of organic solvents in addition to complicated synthesis processes. Herein, we report a facile and green strategy to synthesize fully biobased FR (P-MCC@CS@PA-Na) by surface-functionalizing microcrystalline cellulose (MCC) with chitosan (CS) and sodium phytate (PA-Na) via layer-by-layer assembly in water. The results show that incorporating 15 wt % P-MCC@CS@PA-Na enables EP composite to pass a UL-94 V-1 rating with a limiting oxygen index of 26.2%. Meanwhile, the peak heat release rate, total heat release, peak smoke production release, total smoke production, the fire growth rate, and the fire retardancy index of the EP/15 wt % P-MCC@CS@PA-Na are greatly reduced, indicating a good fire retardance. Notably, the well-designed P-MCC@CS@PA-Na simultaneously strengthens and toughens the EP because of uniform dispersion and a favorable interfacial compatibility between P-MCC@CS@PA-Na and the EP matrix. This work provides a green strategy for the fabrication of highly efficient multifunctional fully biobased FRs for polymers.
研究领域:
材料科学
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化学工程
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可持续性
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
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2025
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IF 6.2
Shuqi Dong,Bing Cao,Xuexia Wang,Lina Liang,Guoyuan Zou,Liang Yuan,Yanhua Chen
The polyurethane coatings of controlled-release fertilizers (CRFs) have problems with low biomass content and poor degradability. The residual coatings tend to be present in the soil as microplastics, which limits their environmentally sustainable application. This study prepared a fully bio-based polyurethane CO-LTI mainly from castor oil (CO) and ethyl ester L-lysine triisocyanate (LTI) using the one-pot method. The CO-LTI coatings have nutrient-controlled release properties. As the coating percentage increased from 3 % to 6 %, the minimum cross-sectional thickness of the coating measured by scanning electron microscopy (SEM) increased from 19 μm to 42 μm, which prolonged the time of controlled release under the effect of physical barrier. The CO-LTI coatings have good biodegradability in soil, with a remarkable biodegradation rate of 27 % within 12 months. The degradation properties of CO-LTI coatings were characterized using various techniques, including SEM, X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA) and atomic force microscopy (AFM). The biodegradation mechanism of the CO-LTI coating in soil was elucidated, and it was confirmed that the degradation was carried out under the action of chemical degradation related to microorganisms. The effects of coating residues on plant growth and soil bacterial communities were simulated by applying CRFs with different concentration gradients. They were confirmed to be related to the coating's concentration gradient and degradation process. This study provides a new approach for preparing environmentally friendly controlled-release fertilizers and valuable insights into the potential mechanisms of biodegradation and its impact on ecological environments.
研究领域:
环境科学
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农业化学
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材料科学
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植物生物学
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2016
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IF 5.267
Ying Pan,Jing Zhan,Haifeng Pan,Wei Wang,Gang Tang,Lei Song,Yuan Hu
A fully biobased coating containing chitosan (CS) and lignosulfonate (LS) was facilely fabricated on the surface of flexible polyurethane foam (FPUF) using layer-by-layer assembly method. The CS/LS based coatings were successfully deposited on the substrate, as demonstrated by UV–vis absorption spectroscopy, attenuated total reflection Fourier transform infrared spectroscopy, and scanning electron microscopy. Subsequently, the different bilayers of the coatings were applied to enhance the thermal stability, fire resistance, and mechanical properties of FPUFs. It was found that the thermal degradation of coated FPUF under nitrogen atmosphere was obviously retarded compared with the pure FPUF. Furthermore, an eight-bilayer CS/LS based coating significantly improved the fire resistance of FPUF, as evidenced by the remarkable reduction (42%) of peak heat release rate. Meanwhile, the mechanical property of coated FPUF was improved. After the FPUF was covered with the eight-bilayer coating, the tensile strength was increased from 0.17 to 0.19 MPa compared with pure FPUF.
研究领域:
材料科学
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高分子科学
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涂料与薄膜
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消防安全工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2023
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IF 8.4
Sican Zhou,Kaifeng Huang,Xiwei Xu,Binbo Wang,Weiqiong Zhang,Yi Su,Kezhen Hu,Chuanzhi Zhang,Jin Zhu,Gengsheng Weng,Songqi Ma
Developing thermosets from lignin has huge significance due to the abundant renewable resources and rigid polyaromatic structure of lignin; nevertheless, it is still a challenge to develop fully biobased thermosets with high performance. Herein, lignin was modified with glycidol and further reacted with maleic anhydride to produce multicarboxyl lignin (MGL) which possessed improved solubility in green solvents such as ethanol and increased reactivity toward the epoxy group. Fully biobased epoxy thermosets were prepared from MGL, citric acid (CA), and epoxidized soybean oil (ESO) with the assistance of ethanol. The thermosets exhibited superior thermal and mechanical properties and degradability. This study provides a straightforward countermove to achieve rigid and flexible thermosets from lignin and other abundant renewable bioresources and also provides a promising sustainable alternative to conventional epoxy thermosets.
研究领域:
材料科学
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化学工程
·
可持续化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2024
·
IF 15.8
Jie Wang,Zhichen Xiong,Yaxun Fan,Hongliang Wang,Changcheng An,Bo Wang,Ming Yang,Xue Li,Yan Wang,Yilin Wang
Excessive usage of biologically toxic fungicides and their matrix materials poses a serious threat to public health. Leveraging fungicide carriers with inherent pathogen inhibition properties is highly promising for enhancing fungicide efficacy and reducing required dosage. Herein, a series of coacervates have been crafted with lignin and surfactin, both of which are naturally derived and demonstrate substantial antifungal properties. This hierarchically assembled carrier not only effectively loads fungicides with a maximum encapsulation efficiency of 95% but also stably deposits on hydrophobic leaves for high-speed impacting droplets. Intriguingly, these coacervates exhibit broad spectrum fungicidal activity against eight ubiquitous phytopathogens and even act as a standalone biofungicide to replace fungicides. This performance can significantly reduce the fungicide usage and be further strengthened by an encapsulated fungicide. The inhibition rate reaches 87.0% when 0.30 mM pyraclostrobin (Pyr) is encapsulated within this coacervate, comparable to the effectiveness of 0.80 mM Pyr alone. Additionally, the preventive effects against tomato gray mold reached 53%, significantly surpassing those of commercial adjuvants. Thus, it demonstrates that utilizing biosurfactants and biomass with intrinsic antifungal activity to fabricate fully biobased coacervates can synergistically combine the functions of a fungicide carrier and antifungal agent against phytopathogens and guarantee environmental friendliness. This pioneering approach provides deeper insights into synergistically enhancing the effectiveness of agrochemicals from multiple aspects, including fungicide encapsulation, cooperative antifungal action, and droplet deposition.
研究领域:
农业科学
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生物技术
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环境科学
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植物病理学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2022
·
IF 8.025
Fuyou Yu,Hongbo Shi,Kun Wang,Hui Li,Lincai Peng
A green and facile method was proposed to prepare robust and fully bio-based modified paper in this study, which involved in layer-by-layer deposition of chitosan (CS) and mussel adhesive protein-mimetic polymer (dopamine-grafted carboxymethyl cellulose, CMC- g -DA) on paper surface and subsequent oxidative cross-linking by sodium periodate . The mechanical, barrier and antibacterial properties of the cross-linked multilayer-modified paper significantly improved with the increased bilayer numbers. Compared with unmodified paper, cross-linked (CS/CMC- g -DA) 6 multilayer-modified paper exhibited 71.6 % improvement in tensile strength , 69.2 % and 56.3 % decline in air and water vapor permeability, as well as above 90 % antibacterial efficiency against S. aureus and E. coli . Particularly, the cross-linked multilayer-modified paper maintained outstanding functional stability even after suffering from vigorously corrosive treatment. The obtained functional paper effectively extended the shelf-life of Agaricus bisporus to 6 days under ambient conditions. We believed that the prepared robust functional paper in this study will have promising application prospect in food packaging field.
研究领域:
材料科学
·
食品科学
·
生物技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Zhaoxuan Feng,Yanan Xu,Wenli Ding,Qingqing Li,Xiaoli Zhao,Xinfeng Wei,Minna Hakkarainen,Mingbo Wu
Facile fabrication of green and renewable bio-based membranes with good anti-fouling and oil/water separation performance is of great importance to solve the oil spills and industrial oily wastewater threatening the ecological environment. Here, a fully biobased oil/water separation membrane with an ordered porous structure was 3D printed ultraviolet-assisted direct ink writing. The components of the bio-ink were obtained by methacrylation of chitosan (CS) and gelatin (GEL) to synthesize methacrylated chitosan (CSMA) and methacrylated gelatin (GELMA), while the nanographene oxide (nGO) was derived from CS through a simple microwave-assisted hydrothermal carbonization followed by oxidation step. The addition of nGO boosted the printability of the bio-ink, and the anti-fouling property and water permeation flux of the printed membranes. As a result, the membrane M−CSMA/GELMA/nGO-0.7 with the optimal performance possessed a low water contact angle in air of 0°, and high underwater oil contact angle of 161.5°, demonstrating a combination of superhydrophilic and underwater superoleophobic properties. M−CSMA/GELMA/nGO-0.7 has good corrosion resistance and long service life as evidenced from the separation efficiency of n-heptane/water, which kept above 99.5 % and a high water permeation flux above 38,300 L m −2 h −1 after 20 cyclic tests in the harsh aquatic conditions containing 1 M NaCl, 1 M HCl, or 1 M NaOH, respectively. This shows promising potential for real-life applications.
研究领域:
材料科学
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环境工程
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纳米技术
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）