Facile preparation of functional decorated of phase change materials composites based on paraffin @ sodium alginate

IF 3.5 2区化学 Q2 CHEMISTRY, ANALYTICAL Thermochimica Acta Pub Date : 2025-02-01 Epub Date: 2025-01-04 DOI:10.1016/j.tca.2024.179922

Xiangyun Kong , Jinge Lu , Mengkun Xu, Mengyuan Song, Keqing Li, Wenshuai Qiu, Jiali Zhang, Xi Chen, Yongxin Liu

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Abstract

A novel and simple one-step method was proposed for the preparation of multifunctional microencapsulated phase change materials to satisfy the requirements of different application scenarios. Here, with the help of the super reaction ability and coordination effect of metal ions Zn²⁺, the paraffin (PCM) was well encapsulated by the sodium alginate (SA) shell by the cross-linking between SA and Zn²⁺. At the same time, Na₂S·9H₂O and 2-MeIM were selected to realize the loading of ZnS quantum dots and ZiF-8 in the materials by their coordination with excess Zn²⁺ in the system. The results of differential scanning calorimeter (DSC), Ultraviolet-visible-near-infrared (UV–vis-NIR), Photoluminescence and Brunauer–Emmett–Teller (BET) indicated that the obtained PCM@SA/ZnS and PCM@SA/ZiF-8 not only retained good heat resistance and heat storage properties, but also had new functions such as fluorescence and adsorption. This work would provide a new idea for the development of multi-functional composite materials.

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海藻酸钠基石蜡复合相变材料功能装饰的简易制备

为满足不同应用场合的需求，提出了一种新颖、简单的一步法制备多功能微胶囊化相变材料的方法。本文利用金属离子Zn2+的超反应能力和配位效应，通过SA与Zn2+的交联作用，将石蜡（PCM）包裹在海藻酸钠（SA）的壳层中。同时，选择Na2S·9H2O和2-MeIM，通过配合体系中过量的Zn2+，实现材料中ZnS量子点和ZiF-8的负载。差示扫描量热仪（DSC）、紫外-可见-近红外（UV-vis-NIR）、光致发光和Brunauer-Emmett-Teller （BET）测试结果表明，制备的PCM@SA/ZnS和PCM@SA/ZiF-8不仅保持了良好的耐热性和储热性能，而且具有荧光和吸附等新功能。这项工作将为多功能复合材料的发展提供新的思路。

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来源期刊

Thermochimica Acta 化学-分析化学

CiteScore

6.50

自引率

8.60%

发文量

210

审稿时长

40 days

期刊介绍： Thermochimica Acta publishes original research contributions covering all aspects of thermoanalytical and calorimetric methods and their application to experimental chemistry, physics, biology and engineering. The journal aims to span the whole range from fundamental research to practical application. The journal focuses on the research that advances physical and analytical science of thermal phenomena. Therefore, the manuscripts are expected to provide important insights into the thermal phenomena studied or to propose significant improvements of analytical or computational techniques employed in thermal studies. Manuscripts that report the results of routine thermal measurements are not suitable for publication in Thermochimica Acta. The journal particularly welcomes papers from newly emerging areas as well as from the traditional strength areas: - New and improved instrumentation and methods - Thermal properties and behavior of materials - Kinetics of thermally stimulated processes