COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Yu Yang,Han Cui,Weikun Jiang,Wenliang Wang,Chao Wang,Gaojin Lyu
The development of continuously degradable and recyclable polymeric composites with superb mechanical properties, which can extend the service life of materials and reduce the environmental impact, will make a significant contribution to global sustainability. In this study, poly(vinyl alcohol) (PVA)-based composites (D-PVA-Fe-TA) with degradability, recyclability and excellent mechanical properties are prepared by complexation of 3,4-dihydroxybenzaldehyde-grafted PVA (D-PVA), tannin (TA) and Fe 3+ ions in dimethyl sulfoxide (DMSO), and then dialysis in deionized water and glycerol (Gly). The two-step dialysis process, playing a crucial role in reducing the free water of D-PVA-Fe-TA composites, enhances the formation of reversible of hydrogen-bonding and the reinforcement of self-assembled Fe 3+ -chelation between TA and D-PVA, and facilitates the fabrication of PVA-based composites with a breaking strength of ≈ 18.7 MPa, an elongation at break of ∼ 812 % and a toughness of ≈ 86.81 MJ/m 3 ; Meanwhile, the resulting homogeneous and dense structure of D-PVA-Fe-TA composites hinders the penetration of Gly solution, thereby enhancing the bonding strength and environmental adaptability of D-PVA-TA-Fe composites within the temperature range of −20℃ to 60℃. Furthermore, the as-prepared D-PVA-TA-Fe composites exhibit recyclability for multiple cycles. When placed under soil culture medium, the resulting composites can be degraded without the need for manual interference. This study presents a novel strategy for the fabrication of materials possessing excellent mechanical strength, environmental adaptability, recyclability and degradation, which have great potential for taking the place of conversional composites in specific conditions.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
Polymers
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2025
·Vol. 17
·期 16
·2265
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IF 4.9
Xiaohong Ji,Minghui Yang,Huiwen Tian,Jin Hou,Jingqiang Su,Zhen Wang,Zixue Zhang,Yuefeng Tian,Liangliang Zhou,Guanghua Hu,Yunfei Yang,Jizhou Duan,Baorong Hou
We present a straightforward emulsion-induced interfacial anisotropic assembly method for in- situ synthesis of bowl-shaped, self-encapsulated mesoporous polydopamine (BMPDA) nanocontainers (M-M@P) loaded with 2-mercaptobenzimidazole (2-MBI). Results showed that the loading capacity of the bowl-shaped mesoporous polydopamine reaches 24 wt.%. The M-M@P exhibits a cumulative MBI release of 91.61% after immersion in a 3.5 wt.% NaCl solution at pH = 2 for 24 h, accompanied by a corrosion inhibition efficiency of 95.54%. Additionally, the acid-responsive M-M@P not only enables controlled release of MBI but also synergistically promotes the formation of a protective film on the carbon steel substrate via the chelation of PDA-Fe3+, thereby enhancing the self-healing performance of waterborne epoxy coatings.
研究领域:
材料科学
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腐蚀工程
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聚合物涂层
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纳米技术
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智能材料
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产品关联
DOI
PubMed
高影响因子
ANALYTICAL CHEMISTRY
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2025
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IF 6.7
Zongyou Chen,Jiaqi Yin,Shijin Huang,Keyang Lai,Juan Peng,Weihua Lai
The photothermal lateral flow immunoassay (LFIA) has garnered considerable attention, owing to its suitability for on-site quantitative detection. Furthermore, it has distinct advantages in further constructing sensitive detection methods for low-concentration targets. In this study, we employed a ligand engineering strategy to synthesize Fe3+-chelated quinone nanoparticles (FQNPs). Quinones with different structures, namely, naphthazarin, quinizarine, purpurin, and tetrahydroxyanthraquinone (THAQ), served as ligands to fabricate a series of FQNPs. Among them, FQNPs based on tetrahydroxyanthraquinone (FQNPs-T) exhibited exceptional light absorption ability (molar extinction coefficient = 12.71 × 1010 M–1 cm–1) and photothermal conversion efficiency (η = 60.32%). Subsequently, a photothermal LFIA based on FQNPs-T (FQNPs-LFIA) was developed for the detection of chlorantraniliprole (CHL) in apple and chili. The FQNPs-LFIA enables the highly sensitive detection of CHL within 25 min with a limit of detection (LOD) of 0.021 ng mL–1, which was 8.77-fold lower than that of conventional gold nanoparticle-based LFIA (0.193 ng mL–1). The average recovery rates of FQNPs-LFIA were 84.29–113.58%, with coefficients of variation of 4.20–14.84%. Overall, this study demonstrates the potential of FQNPs-LFIA for the sensitive and accurate detection of CHL, and it paves the way for the rapid screening of other food contaminants.
研究领域:
分析化学
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纳米技术
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生物检测
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食品安全
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环境监测
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）