基于聚多巴胺-银/碳球/壳聚糖双壳微胶囊的光热储能和电磁干扰屏蔽织物涂层

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings Pub Date : 2025-09-29 DOI:10.1016/j.porgcoat.2025.109705

Yunyi Guo , Zhonghua Yuan , Kejing Yu , Kunlin Chen

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引用次数: 0

摘要

针对传统单壳微胶囊功能受限、环境适应性不足等局限性，本研究创新性地设计了碳球/chitosan@polydopamine-Ag双壳复合微胶囊，协同实现高效光热转换、电磁干扰（EMI）屏蔽和抗菌性能。以石蜡为相变核，采用化学沉淀法直接凝聚法制备壳聚糖和碳球组成的内壳和聚多巴胺-银有机无机复合材料的外层。然后将这些微胶囊与MXene集成，以生产多功能织物涂层。表征结果证实了明确的双壳结构，银纳米粒子均匀分布在聚多巴胺的外壳上。这种双壳结构显著提高了石蜡的热稳定性。在功能上，银纳米粒子的等离子体共振与聚多巴胺的宽带光吸收之间的协同作用显著提高了微胶囊的光热转换和储能效率，最高可达77.9%。此外，微胶囊和MXene复合形成的多级损耗机制使涂层织物在x波段内具有58 dB的电磁干扰屏蔽效果。该涂层织物对金黄色葡萄球菌和大肠杆菌的抑菌率分别达到95.8%和99.9%。这种双壳设计通过材料选择和结构配置的战略性整合实现，为开发具有智能热管理和电磁防护能力的先进纺织品提供了一种新的途径。

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Fabric coatings based on polydopamine-silver/carbon sphere/chitosan double-shell microcapsules for photothermal energy storage and electromagnetic interference shielding performance

To address the limitations of conventional single-shell microcapsules, such as limited functionality and inadequate environmental adaptability, this study innovatively designed a carbon sphere/chitosan@polydopamine-Ag dual-shell composite microcapsule to synergistically achieve efficient photothermal conversion, electromagnetic interference (EMI) shielding, and antibacterial properties. Using paraffin as the phase-change core, the inner shell composed of chitosan and carbon sphere and the outer shell of a polydopamine-Ag organic-inorganic composite were sequentially fabricated through a straightforward coacervation process combined with chemical precipitation. These microcapsules were then integrated with MXene to produce a multifunctional fabric coating. Characterization results confirmed that the well-defined dual-shell structure, with silver nanoparticles uniformly distributed on the polydopamine outer shell. This dual-shell architecture markedly improved the thermal stability of the paraffin. Functionally, the synergistic interaction between the plasmonic resonance of silver nanoparticles and the broadband light absorption of polydopamine significantly enhanced the photothermal conversion and energy storage efficiency of the microcapsules, achieving a maximum of 77.9 %. Furthermore, the multi-level loss mechanism created by the combined microcapsules and MXene endows the coated fabric with an EMI shielding effectiveness of 58 dB within the X-band. The coated fabrics also exhibited excellent antibacterial performance, achieving inhibition rates of 95.8 % and 99.9 % against Staphylococcus aureus and Escherichia coli, respectively. This dual-shell design, realized through the strategic integration of material selection and structural configuration, provides a novel approach for developing advanced textiles with intelligent thermal management and electromagnetic protection capabilities.

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来源期刊

Progress in Organic Coatings 工程技术-材料科学：膜

CiteScore

11.40

自引率

15.20%

发文量

577

审稿时长

48 days

期刊介绍： The aim of this international journal is to analyse and publicise the progress and current state of knowledge in the field of organic coatings and related materials. The Editors and the Editorial Board members will solicit both review and research papers from academic and industrial scientists who are actively engaged in research and development or, in the case of review papers, have extensive experience in the subject to be reviewed. Unsolicited manuscripts will be accepted if they meet the journal''s requirements. The journal publishes papers dealing with such subjects as: • Chemical, physical and technological properties of organic coatings and related materials • Problems and methods of preparation, manufacture and application of these materials • Performance, testing and analysis.