Colloids and Surfaces A: Physicochemical and Engineering Aspects最新文献_第6页

A green strategy to produce amino-functionalized polysiloxane softener 氨基功能化聚硅氧烷软化剂的绿色生产策略

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-01-23 DOI: 10.1016/j.colsurfa.2026.139698

Hailong Liu , Lei Liu , Ju Xie , Shulin Li , Hongguang Li , Jie Zhang

Amino-functionalized polysiloxanes, prepared through the base-catalyzed copolymerization of amino-containing γ-substituted silane coupling agents (γ-SCAs) and hydroxy-terminated polysiloxanes, have wide applications including textile finishing agents, resin modifiers and personal care products. However, the generation of cyclic by-products resulting from the base-catalyzed backbiting reaction of Si-O-Si chains has been a long-standing problem. To address this issue, herein we present an environmentally friendly synthetic route which overcomes the aforementioned problems. Two α-SCAs with ethylene diamine and piperazine substituents were synthesized, whose Si-OC bonds showed self-catalyzed reactivity toward silanol groups. Benefiting from this unique property, two types of α-amino functionalized polysiloxanes were obtained via dealcoholization between α-SCAs and hydroxy-grafted polysiloxanes. The self-catalyzed mechanism of amino-functionalized α-SCAs was revealed for the first time. The film-forming capability of these α-substituted amino polysiloxanes was confirmed by treatment of cellulose membranes with isopropanol solutions, leading to the lowering of the roughness of the membrane accompanied a simultaneous improvement of the hydrophobicity. Further, microemulsions were prepared based on these α-substituted amino polysiloxanes, with which the finishing of real fabrics (cotton fiber and polyester) was tested. The results showed that these newly-developed amino-functionalized polysiloxanes are potentially applicable as a new generation of fabric softener.

氨基功能化聚硅氧烷是由含氨基的γ-取代硅烷偶联剂（γ-SCAs）与端羟基聚硅氧烷在碱催化下共聚而成，在纺织品整理剂、树脂改性剂和个人护理用品等方面有着广泛的应用。然而，由碱催化的Si-O-Si链反向反应产生的环副产物一直是一个长期存在的问题。为了解决这一问题，本文提出了一种克服上述问题的环保型合成路线。合成了两种具有乙二胺和哌嗪取代基的α-SCAs，其Si-OC键对硅醇基团具有自催化反应活性。利用这一独特的性质，通过α-SCAs与羟基接枝的聚硅氧烷之间的脱醇反应，得到了两种α-氨基功能化聚硅氧烷。首次揭示了氨基功能化α-SCAs的自催化机理。用异丙醇溶液处理纤维素膜，证实了α-取代氨基聚硅氧烷的成膜能力，降低了膜的粗糙度，同时提高了疏水性。在此基础上，制备了α-取代氨基聚硅氧烷微乳液，并对棉纤维和涤纶织物的整理效果进行了测试。结果表明，这些新开发的氨基功能化聚硅氧烷具有作为新一代织物柔顺剂的潜力。

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引用次数: 0

Sepiolite-mediated confined synthesis of eco-friendly fibrous iron yellow hybrid pigments with superior properties 海泡石介导的具有优异性能的环保型纤维铁黄杂化颜料的密闭合成

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-01-23 DOI: 10.1016/j.colsurfa.2026.139696

Zexu Zhang , Jiaxin Cui , Yue Yin , Wenting Zhao , Fang Guo , Qingdong He , Bin Mu , Aiqin Wang , Wenbo Wang

An eco-friendly fibrous iron yellow hybrid pigment (SIY), characterized by bright color and superior stability, was synthesized via the in-situ mineralization of iron ions using natural sepiolite (SEP) fibers as both a nanoreactor and a green precipitating agent. During synthesis, Fe(III) ions were first anchored onto the negatively charged SEP surface through electrostatic attraction and ion exchange. The mildly alkaline surface of SEP subsequently promoted the controlled conversion of Fe(III) into colored iron oxyhydroxide (FeOOH) phases under hydrothermal conditions, producing a yellow hybrid pigment suitable for the sustainable replacement of conventional heavy metal-based toxic pigments. The spatially confined conversion of Fe(III) on SEP enables FeOOH species to disperse uniformly and anchor firmly onto the SEP fibers. The resulting hybrid pigment exhibited excellent color properties (L* = 69.82, a* = 14.19, b* = 39.54), outperforming commercial iron yellow pigments in both chromatic vibrancy and thermal stability. Notably, the pigment showed remarkable color retention, with Δb* values of only 1.41, 4.52, 3.59, 1.29, and 0.64 under various environmental conditions. Moreover, the inherent hydrophilicity of SEP greatly improved the dispersion and suspension stability of the hybrid pigment in aqueous media compared with conventional iron yellow pigments. By leveraging the abundant surface silanol groups, the pigment was readily functionalized with silane coupling agents, producing a fibrous hybrid material with superhydrophobicity (water contact angle ≥ 140°) and self-cleaning capabilities. Combining vivid color, robust stability, and multifunctional performance, this SEP-based hybrid pigment demonstrates considerable potential for diverse applications, including coatings, paints, and construction materials.

以天然海泡石（SEP）纤维为纳米反应器和绿色沉淀剂，通过原位矿化铁离子，合成了颜色鲜艳、稳定性优越的环保型纤维铁黄杂化颜料（SIY）。在合成过程中，Fe（III）离子首先通过静电吸引和离子交换被固定在带负电荷的SEP表面。SEP的温和碱性表面随后促进了水热条件下Fe（III）向有色氧化铁（FeOOH）相的受控转化，生产出适合替代传统重金属基有毒颜料的黄色杂化颜料。Fe（III）在SEP上的空间限制转化使FeOOH均匀分散并牢固地锚定在SEP纤维上。所制得的杂化颜料具有优异的显色性能（L* = 69.82, a* = 14.19, b* = 39.54），在色活力和热稳定性方面均优于市售铁黄颜料。值得注意的是，该色素具有显著的保色性，在各种环境条件下，Δb*值仅为1.41、4.52、3.59、1.29和0.64。此外，与传统铁黄颜料相比，SEP固有的亲水性大大提高了杂化颜料在水介质中的分散和悬浮稳定性。利用丰富的表面硅醇基团，颜料很容易被硅烷偶联剂功能化，生产出具有超疏水性（水接触角≥140°）和自清洁能力的纤维杂化材料。结合鲜艳的色彩，强大的稳定性和多功能性能，这种基于sep的混合颜料显示出相当大的应用潜力，包括涂料，油漆和建筑材料。

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引用次数: 0

Molecular design of N-oxide zwitterions for supreme salinity tolerance and substrate adaptability in aqueous lubrication 氮氧两性离子的分子设计，在水润滑中具有极高的耐盐性和底物适应性

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-01-23 DOI: 10.1016/j.colsurfa.2026.139674

Shuai Jiang , Yanxin Zhang , Qi Zhang , Yifeng Cao , Longgang Wang , Weifeng Lin

Hydration lubrication is the core mechanism of water-based lubrication, enabling low friction through biomimetic interfacial hydration layers. Zwitterionic materials, with their outstanding hydration capabilities have recently emerged as key choices for constructing superlubricant interface materials. In the study, inspired by the natural osmolyte trimethylamine N-oxide (TMAO), we designed and synthesized a novel class of N-oxide zwitterionic lubricants featuring a direct N⁺-O⁻ bond. Unlike conventional zwitterions such as sulfobetaine and carboxybetaine, these materials possess a smaller bond dipole and induce stronger water polarization, resulting in a robust hydration layer even under high-salinity conditions. The resulting lubricants exhibit excellent salinity tolerance and substrate adaptability, maintaining a low coefficient of friction (COF) across various surfaces. Together with their inherent biocompatibility and universal lubricating performance, these properties underscore the strong potential of N⁺-O⁻ zwitterions for biomedical and advanced interfacial applications.

水化润滑是水基润滑的核心机制，通过仿生界面水化层实现低摩擦。两性离子材料以其优异的水化性能成为近年来构建超润滑界面材料的关键选择。在这项研究中，受天然渗透物三甲胺N-氧化物（TMAO）的启发，我们设计并合成了一类新型的N-氧化物两性离子润滑剂，其特征是N + -O -毒合。与传统的两性离子（如磺基甜菜碱和羧甜菜碱）不同，这些材料具有更小的键偶极子，并诱导更强的水极化，即使在高盐度条件下也能形成坚固的水合层。由此产生的润滑剂具有优异的耐盐性和基材适应性，在各种表面上保持低摩擦系数（COF）。再加上其固有的生物相容性和通用润滑性能，这些特性强调了N + -O -⁻应用于生物医学和高级界面的巨大潜力。

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引用次数: 0

h-BN bulk-to-nanosheet in-situ achieved in polyurea for boosting its thermal stability, friction, and corrosion resistance 在聚脲中原位实现了h-BN块到纳米片，以提高其热稳定性，摩擦性和耐腐蚀性

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-01-22 DOI: 10.1016/j.colsurfa.2026.139687

Yanchun Zhao , Shuaikang Zhang , Xianglong Yu , Chunxiao Luo , Mingxia Wei , Dawei Luo , Changning Bai

The rapid advancement of marine engineering and wind power equipment has exacerbated issues related to friction, wear, and corrosion in mechanical systems, reducing equipment lifespan and raising operational costs. Polyaspartate ester (PAE) polyurea is recognized as an eco-friendly protective coating; however, its long-term serviceability is hindered by microporous defects, inadequate fracture toughness, high-temperature friction degradation, and hydrophilicity. Unlike conventional multi-step modification-dispersion strategies for polymer composites, this study developed h-BN@PAE via a one-step ultrasonic-assisted method without surface grafting, enabling in-situ exfoliation of hexagonal boron nitride (h-BN) into uniformly dispersed nanosheets in PAE. The h-BN@PAE composite coating demonstrated enhanced performance characteristics: at 30 ℃, the friction coefficient ranged from 0.06 to 0.07 (remaining stable at approximately 0.1 at 50 ℃); the self-corrosion current density measured at 1.018 × 10⁻⁹ A/cm², significantly lower than PAE’s value of 9.71 × 10⁻⁹ A/cm². Mechanistically, ultrasonic cavitation effectively disrupted h-BN agglomerates while inducing interfacial B-O/N-C bonds formation. The presence of h-BN contributed a self-lubricating layer with high in-plane thermal conductivity (∼400 W·m⁻¹·K⁻¹), facilitating efficient heat dissipation and providing a physical barrier against corrosive media. This work advances the field by simplifying fabrication and achieving multi-performance synergy, addressing prior limitations of complex synthesis and single-property optimization, offering support for high-performance coatings in harsh environments.

海洋工程和风力发电设备的快速发展加剧了机械系统的摩擦、磨损和腐蚀问题，降低了设备的使用寿命，提高了运营成本。聚天冬氨酸酯（PAE）聚脲是公认的环保防护涂料；然而，它的长期使用受到微孔缺陷、断裂韧性不足、高温摩擦退化和亲水性的阻碍。与传统的聚合物复合材料多步骤改性-分散策略不同，本研究通过一步超声辅助方法开发了h-BN@PAE，无需表面接枝，使六方氮化硼（h-BN）在PAE中原位脱落成均匀分散的纳米片。h-BN@PAE复合涂层表现出增强的性能特征：在30℃时，摩擦系数在0.06 ~ 0.07之间，在50℃时保持稳定在0.1左右；自腐蚀电流密度为1.018 × 10−9 A/cm2，显著低于PAE的9.71 × 10−9 A/cm2。在机理上，超声空化有效地破坏了h-BN团聚，同时诱导了界面B-O/N-C键的形成。h-BN的存在形成了具有高面内导热系数（~ 400 W·m−1·K−1）的自润滑层，促进了有效的散热，并为腐蚀介质提供了物理屏障。这项工作通过简化制造和实现多性能协同，解决了复杂合成和单一性能优化的先前限制，为恶劣环境下的高性能涂料提供了支持，从而推动了该领域的发展。

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引用次数: 0

Interfacial characteristics and mechanical behavior of xanthan gum biopolymer with clay mineral: A steered molecular dynamics study 含粘土矿物的黄原胶生物聚合物的界面特性和力学行为：定向分子动力学研究

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-01-22 DOI: 10.1016/j.colsurfa.2026.139688

Jie Yu , Ali Zaoui , Pengchang Wei , Yuan-Yuan Zheng , Chi Yao

Xanthan gum (XG) biopolymer is widely employed in geotechnical engineering due to its environment-friendly nature, excellent performance, and ability to effectively stabilize soil. The interaction between XG and soil particles plays an essential role in enhancing soil stability, but their interfacial characteristics and mechanical behavior remain unclear in the microscale. In this study, the steered molecular dynamics (SMD) simulation method was used to investigate the friction and pulling behaviors and the underlying interfacial characteristics in the XG/montmorillonite (XG/MMT) system with varying XG content. The simulation results indicate that electrostatic force accounted for the majority in the XG/MMT system, lower XG content could effectively encapsulate the montmorillonite sheets and provide stronger water bridge effect, thereby enhancing the cohesion of clay minerals and strengthening the bonding between them. The friction simulation results show that the addition of XG smoothened the friction of montmorillonite under higher normal loads, while enhancing the interfacial viscous effect under lower normal loads, which was related to the change of interlayer water distribution. The diffusion coefficient of water gradually decreased as the XG content increased, which was favorable for enhancing the soil’s erosion resistance. This study investigates how varying XG content affects clay mechanics at the nanoscale and offers key mechanistic insights into the underlying changes in mechanical behavior, providing new fundamental insights into the role of XG in soil stability enhancement.

黄原胶（XG）生物聚合物因其环境友好、性能优异、能有效稳定土壤而广泛应用于岩土工程中。XG与土壤颗粒之间的相互作用对提高土壤稳定性起着重要作用，但在微观尺度下，它们的界面特征和力学行为尚不清楚。本研究采用定向分子动力学（SMD）模拟方法，研究了不同XG含量的XG/蒙脱土（XG/MMT）体系的摩擦和拉拔行为及其界面特征。模拟结果表明，在XG/MMT体系中，静电力占大部分，较低的XG含量可以有效地包裹蒙脱土片，提供更强的水桥效应，从而增强粘土矿物的凝聚力，加强粘土矿物之间的结合。摩擦模拟结果表明，XG的加入使高法向载荷下蒙脱土的摩擦变得平滑，同时增强了低法向载荷下蒙脱土的界面粘性效应，这与层间水分分布的变化有关。随着XG含量的增加，水分的扩散系数逐渐降低，有利于增强土壤的抗侵蚀能力。本研究探讨了不同的XG含量如何在纳米尺度上影响粘土的力学，并为力学行为的潜在变化提供了关键的机制见解，为XG在增强土壤稳定性中的作用提供了新的基础见解。

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引用次数: 0

Antibacterial electrospun polycaprolactone fibrous membrane doped with tetrabutylammonium chloride for wound healing applications 四丁基氯化铵掺杂的抗菌电纺聚己内酯纤维膜在伤口愈合中的应用

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-01-22 DOI: 10.1016/j.colsurfa.2026.139691

Tian Ma , Meijin Yan , Zhiwei Liu , Kun Li , Tifeng Jiao , Fei Liu

Wound healing is a highly complex biological process, and chronic wounds are susceptible to bacterial attacks. Traditional dressings only provide basic protection, while modern dressings are expected to integrate multiple functions, such as pollution isolation and healing promotion. Electrospinning membranes have gradually become research hotspots due to their ability to simulate extracellular matrix and their large specific surface area. In this study, we prepared chitosan (CS)/polycaprolactone (PCL)/tetradecyldimethylbenzyl ammonium chloride (TDBAC) composite nanofibrous membranes via electrospinning technology. When the mass ratio of PCL to CS was 6:5, the prepared PCL/CS fibrous membrane exhibited the optimal performance, with excellent morphological characteristics, mechanical properties, and hydrophilicity. After adding different contents of the antibacterial agent TDBAC to the PCL/CS solution with this ratio to prepare composite materials, it was found that all composite materials showed good antibacterial properties, and the antibacterial effect enhanced with the increase of TDBAC content. The PCL/CS/TDBAC composite with 1 % TDBAC content (PCL/CS/TDBAC1 %) demonstrated the best comprehensive performance, with colony inhibition rates of 99.93 % and 99.94 % against Staphylococcus aureus and Escherichia coli, respectively. This composite nanofibrous membrane meets the requirements of wound dressings for anti-adhesion, liquid absorption, and biosafety, providing a feasible approach for the development of high-performance antibacterial dressings and is expected to promote the advancement of wound care materials.

伤口愈合是一个高度复杂的生物过程，慢性伤口容易受到细菌的攻击。传统敷料只能提供基本的保护，而现代敷料有望集隔离污染、促进愈合等多种功能于一体。静电纺丝膜因其具有模拟细胞外基质的能力和较大的比表面积而逐渐成为研究热点。本研究采用静电纺丝技术制备了壳聚糖(CS)/聚己内酯(PCL)/十四烷基二甲基苄基氯化铵（TDBAC）复合纳米纤维膜。当PCL与CS的质量比为6:5时，所制备的PCL/CS纤维膜表现出最佳的性能，具有优异的形态特征、力学性能和亲水性。在PCL/CS溶液中按此比例加入不同含量的抗菌剂TDBAC制备复合材料后，发现所有复合材料均表现出良好的抗菌性能，且抗菌效果随TDBAC含量的增加而增强。TDBAC含量为1 % （PCL/CS/TDBAC1 %）的PCL/CS/TDBAC复合材料综合性能最佳，对金黄色葡萄球菌和大肠杆菌的菌落抑制率分别为99.93 %和99.94 %。该复合纳米纤维膜满足伤口敷料抗粘附、吸液、生物安全等要求，为开发高性能抗菌敷料提供了可行途径，有望推动伤口护理材料的进步。

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引用次数: 0

Strategic fabrication of nickel vanadium oxide-reduced graphene oxide nanohybrid: A pathway to hybrid supercapacitor 镍钒氧化还原氧化石墨烯纳米杂化材料的战略性制备：一条通向杂化超级电容器的途径

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-01-22 DOI: 10.1016/j.colsurfa.2026.139685

R.B. Kharade , R.A. Kadam , M.A. Yewale , S.S. Pujari , S.A. Alshehri , D.H. Bobade , S.D. Dhas , S.B. Madake , Minjae Kim , D.K Shin

Nickel vanadium oxide (Ni₃V₂O₈) is an emerging redox-active transition metal oxide with high pseudocapacitive potential but limited by poor intrinsic conductivity and structural degradation during cycling. In this study, a Ni₃V₂O₈–reduced graphene oxide (rGO) nanocomposite was strategically engineered via a facile hydrothermal route to overcome these limitations. The synergistic integration of Ni₃V₂O₈ nanoparticles with interlaced rGO nanosheets enhanced electronic transport, structural stability, and electrolyte accessibility. Structural analyses confirmed the orthorhombic Ni₃V₂O₈ phase and strong interfacial coupling with rGO, while XPS verified the coexistence of Ni²⁺/Ni³⁺ and V⁴⁺/V⁵⁺ redox couples. Among the composites, the optimized Ni₃V₂O₈@rGO (4 mg rGO) exhibited a specific capacitance of 509 F/g at 3 mA/cm² in a three-electrode system. The assembled asymmetric supercapacitor (Ni₃V₂O₈@rGO//AC) delivered 16.47 F/g capacitance, 7.41 Wh/kg energy density, and 523 W/ kg power density, maintaining 89 % coulombic efficiency after 10,000 cycles. These findings highlight the effective role of rGO in boosting electron mobility and mitigating volume expansion, positioning Ni₃V₂O₈@rGO as a highly stable, high-performance electrode for next-generation hybrid supercapacitors.

氧化镍钒（Ni3V2O8）是一种新兴的氧化还原活性过渡金属氧化物，具有较高的赝电容电位，但受固有电导率差和循环过程中结构降解的限制。在这项研究中，通过简单的水热途径战略性地设计了ni3v2o8还原氧化石墨烯（rGO）纳米复合材料来克服这些限制。Ni3V2O8纳米粒子与交错氧化石墨烯纳米片的协同集成增强了电子输运、结构稳定性和电解质可及性。结构分析证实了Ni3V2O8为正交相，与rGO具有较强的界面耦合，XPS证实了Ni2+/Ni3+和V4+/V5+氧化还原偶对共存。在三电极体系中，优化后的Ni3V2O8@rGO（4 mg rGO）在3 mA/cm2下的比电容为509 F/g。组装的非对称超级电容器（Ni3V2O8@rGO//AC）的电容为16.47 F/g，能量密度为7.41 Wh/kg，功率密度为523 W/ kg，循环10000次后库仑效率为89 %。这些发现强调了还原氧化石墨烯在提高电子迁移率和减轻体积膨胀方面的有效作用，将Ni3V2O8@rGO定位为下一代混合超级电容器的高度稳定，高性能电极。

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引用次数: 0

Preparation and research of GMA/ NMA-containing composite fluorine-free cross-linked water-repellent membrane materials modified by nanoparticles 纳米粒子改性含GMA/ nma复合无氟交联拒水膜材料的制备与研究

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-01-22 DOI: 10.1016/j.colsurfa.2026.139695

Xinrui Chen , Yudong Shang , Peng Gu , Yan Ren , Shihua Li , Siyu Fang , Huajie Zhong , Linhe Zhu , Jianhui Mei , Yuanlin Wu , Suqing Chen

In response to the growing global restrictions on fluorinated compounds, this study aims to develop an environmentally friendly and durable fluorine-free water-repellent finishing agent for textiles. A series of cross-linked acrylic emulsions were synthesized using MMA as the hard monomer, BA as the soft monomer, ODA as the hydrophobic functional monomer, and GMA and NMA as the crosslinking monomers. The effects of GMA content on the water repellency and emulsion properties were systematically investigated. To further enhance the hydrophobic performance, SiO₂ and TiO₂ nanoparticles were introduced through both composite emulsification and a step-by-step finishing method. The results showed that the optimal GMA content effectively improved the gelation rate, conversion rate, and contact angle of the treated fabric. Nanoparticle modification increased surface roughness, improved wash durability, and enhanced thermal stability, as confirmed by TG and DSC analyses. Among the modifiers tested, PTES achieved the best hydrophobic enhancement with a maximum contact angle of 146 °. Compared with untreated fabric, the spray grade increased from 0 to 4, and the abrasion resistance was markedly improved. This fluorine-free water-repellent system provides a promising alternative to traditional fluorinated agents, offering high water repellency, thermal stability, and fluorine-free and environmentally preferable.

针对全球对含氟化合物的限制越来越多，本研究旨在开发一种环保耐用的无氟防水性纺织品整理剂。以MMA为硬单体，BA为软单体，ODA为疏水功能单体，GMA和NMA为交联单体，合成了一系列交联丙烯酸乳液。系统研究了GMA含量对乳液防水性和乳液性能的影响。为了进一步提高疏水性能，采用复合乳化和分步整理的方法引入了SiO₂和TiO₂纳米颗粒。结果表明，最佳GMA含量能有效提高织物的胶凝率、转化率和接触角。纳米颗粒改性增加了表面粗糙度，改善了洗涤耐久性，增强了热稳定性，TG和DSC分析证实了这一点。在所测试的改性剂中，PTES的疏水增强效果最好，最大接触角为146°。与未处理织物相比，喷雾等级由0级提高到4级，耐磨性明显提高。这种无氟防水剂系统提供了一种有前途的替代传统的含氟剂，具有高拒水性，热稳定性，无氟和环保的优点。

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引用次数: 0

Coaxial electrospinning of PAN/TPU and PVDF/PS nanofibers for triboelectric nanogenerators: Fabrication, characterization, and output performance 摩擦学纳米发电机用PAN/TPU和PVDF/PS纳米纤维的同轴静电纺丝：制备、表征和输出性能

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-01-22 DOI: 10.1016/j.colsurfa.2026.139689

Mengying Li , Xinglong Song , Na Cheng , Tong Lu , Yilun Hu , Xu Wang , Kai Weng , Baoji Hu , Yalan Yang

A coaxial composite nanofiber triboelectric nanogenerator (TENG) was fabricated using electrospinning technology, featuring a polyacrylonitrile (PAN)/thermoplastic polyurethane (TPU) tribopositive layer (TP) and a polyvinylidene fluoride (PVDF)/polystyrene (PS) tribonegative layer (TN). The diversified interface design enhances energy conversion efficiency and environmental adaptability. Under vertical contact separation mode, the device achieves an open-circuit voltage (VOC) of 198.2 V and a short-circuit current (ISC) of 0.83 μA, outperforming most conventional fiber-based TENGs. It can stably power low-power wearable devices such as LED arrays and digital clocks. Mechanical testing demonstrates the spun nanofiber membrane’s exceptional flexibility and structural integrity: the optimized 10PAN/15TPU fiber membrane exhibits a tensile strength of 6.5 MPa and elongation at break of 79 %, while the 10PVDF/22PS fiber membrane achieves a tensile strength of 0.43 MPa and ductility of 3.7 %, both meeting the mechanical requirements for wearable applications. Characterization via scanning electron microscope (SEM), Fourier transform infrared (FTIR), and XRD confirmed excellent interfacial compatibility, uniform fiber morphology, and tunable crystallinity, which enhance charge retention and reduce leakage. COMSOL Multiphysics simulations revealed an inverse relationship between electrode spacing and output potential, providing theoretical guidance for geometric optimization. This study demonstrates that coaxial PAN/TPU and PVDF/PS nanofibers are viable materials for high-performance flexible TENGs, offering a practical solution for self-powered wearable smart systems integrating mechanical and electrical functionality.

采用静电纺丝技术制备了一种同轴复合纳米纤维摩擦电纳米发电机（TENG），其结构为聚丙烯腈(PAN)/热塑性聚氨酯（TPU）摩擦正层（TP）和聚偏氟乙烯(PVDF)/聚苯乙烯（PS）摩擦负层（TN）。多样化的界面设计提高了能量转换效率和环境适应性。在垂直触点分离模式下，器件的开路电压（VOC）为198.2 V，短路电流（ISC）为0.83 μA，优于大多数传统的基于光纤的teng。它可以稳定地为LED阵列和数字时钟等低功耗可穿戴设备供电。力学测试表明，纺丝纳米纤维膜具有优异的柔韧性和结构完整性：优化后的10PAN/15TPU纤维膜的抗拉强度为6.5 MPa，断裂伸长率为79 %，而10PVDF/22PS纤维膜的抗拉强度为0.43 MPa，延展性为3.7 %，均满足可穿戴应用的力学要求。通过扫描电镜（SEM）、傅里叶变换红外（FTIR）和x射线衍射（XRD）表征，证实了优异的界面相容性、均匀的纤维形态和可调的结晶度，增强了电荷保留，减少了泄漏。COMSOL Multiphysics模拟结果揭示了电极间距与输出电位之间的反比关系，为几何优化提供了理论指导。该研究表明，同轴PAN/TPU和PVDF/PS纳米纤维是高性能柔性TENGs的可行材料，为集成机械和电气功能的自供电可穿戴智能系统提供了实用的解决方案。

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引用次数: 0

High-performance epoxy coatings with polydopamine-functionalized graphene oxide and ceramic nanoparticles: Corrosion resistance, mechanical, hydrophobicity, and flame retardancy 聚多巴胺功能化氧化石墨烯和纳米陶瓷的高性能环氧涂料：耐腐蚀、机械、疏水性和阻燃性

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-01-22 DOI: 10.1016/j.colsurfa.2026.139692

SP Vinodhini , JR Xavier

This work focuses on the development of multifunctional epoxy (EP) coatings with enhanced corrosion resistance, mechanical strength, hydrophobicity, and thermal stability by integrating polydopamine (PDA)-functionalized graphene oxide (GO) with aluminum oxide (Al₂O₃) and aluminum nitride (AlN) nanoparticles. GO was functionalized using PDA to facilitate uniform dispersion of bilayered Al₂O₃/AlN nanofillers, resulting in a nanocomposite (GO/PDA- Al₂O₃/AlN) with strong covalent interactions and improved interfacial compatibility. EP coatings incorporating 0.5 wt% of GO/PDA-Al₂O₃/AlN showed superior corrosion protection (R_coat: 8.05E11 Ω.cm²) in seawater environments, demonstrated by electrochemical impedance spectroscopy (EIS), scanning electrochemical microscopy (SECM), and salt spray tests. Additionally, the coatings exhibited outstanding mechanical performance, achieving tensile strength retention up to 247 MPa and hardness up to 1352 MPa after prolonged immersion. Water contact angle measurements demonstrated outstanding hydrophobicity (143°), while flame-retardant tests indicated marked reductions in both peak heat release rate (PHRR) (85 %) and total smoke release (71 %). The synergistic interactions among GO, PDA, Al₂O₃, and AlN not only enhanced barrier performance and interfacial adhesion but also substantially improved the long-term durability of EP coatings under harsh marine conditions. These findings demonstrate the potential of this nanocomposite strategy for long-term protection in structural and marine applications.

这项工作的重点是通过将聚多巴胺（PDA）功能化氧化石墨烯（GO）与氧化铝（Al2O3）和氮化铝（AlN）纳米颗粒结合，开发具有增强耐腐蚀性、机械强度、疏水性和热稳定性的多功能环氧树脂（EP）涂层。使用PDA对氧化石墨烯进行功能化，以促进双层Al2O3/AlN纳米填料的均匀分散，从而形成具有强共价相互作用和改善界面相容性的纳米复合材料（GO/PDA- Al2O3/AlN）。电化学阻抗谱（EIS）、扫描电化学显微镜（SECM）和盐雾测试表明，含有0.5 wt%氧化石墨烯/PDA-Al2O3/AlN的EP涂层在海水环境中具有较好的防腐性能（Rcoat: 8.05E11 Ω.cm2）。此外，涂层表现出优异的力学性能，在长时间浸泡后，抗拉强度保持率高达247 MPa，硬度达到1352 MPa。水接触角测量显示出出色的疏水性（143°），而阻燃测试表明，峰值热释放率（PHRR）（85 %）和总烟雾释放率（71 %）均显着降低。氧化石墨烯、PDA、Al2O3和AlN之间的协同作用不仅增强了屏障性能和界面附着力，而且大大提高了EP涂层在恶劣海洋条件下的长期耐久性。这些发现证明了这种纳米复合材料策略在结构和海洋应用中的长期保护潜力。

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引用次数: 0