Efficient preparation of bamboo-based shape-stable phase change materials using a rapid pretreatment method combining low-intensity microwave

IF 2.5 3区农林科学 Q1 FORESTRY

European Journal of Wood and Wood Products Pub Date : 2025-08-20 DOI:10.1007/s00107-025-02310-3

Baiyang Qiu, Xune Fan, Xi Yang

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引用次数: 0

Abstract

High shape-stable phase change materials (PCMs) are critical for the application of thermal insulation or storage of building energy systems. In this work, the highly shape-stabilized PCM composites were prepared by using hierarchical porous bamboo supporting materials to stabilize polyethylene glycol (PEG). A rapid pretreatment method combining low-intensity microwave processing was employed for the first time to achieve porous bamboo with great structural integrity in which the PEG mass loading could be as high as 210%. The morphological, chemical, and hierarchical porous properties of bamboo supporting materials during the pretreatment process were systematically investigated. Due to the greatly developed pore structure and surface-active functional groups of bamboo supporting matrix, the formation of strong hydrogen bonds along with capillary actions between bamboo and PEG contributes to the excellent thermal storage properties of obtained bamboo-based PCM composites. The differential scanning calorimetry and liquid leakage tests of the composites exhibited high-stable shape and leak-proof performance with the phase change enthalpy high up to 100.6 J/g. This study provided a novel, rapid pretreatment method for bamboo and provided valuable insights for the future application of bamboo-based energy conservation materials.

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结合低强度微波快速预处理制备竹基形状稳定相变材料

高形状稳定的相变材料（PCMs）对于建筑能源系统的隔热或存储应用至关重要。本文采用层次化多孔竹支撑材料稳定聚乙二醇（PEG），制备了高度形状稳定的PCM复合材料。首次采用低强度微波处理相结合的快速预处理方法，制备了具有良好结构完整性的多孔竹材，其PEG质量载荷可高达210%。系统地研究了竹支撑材料在预处理过程中的形态、化学和分层多孔性。由于竹基支撑基质孔隙结构和表面活性官能团的高度发达，竹基与聚乙二醇之间形成了强氢键并发生毛细作用，从而获得了优异的储热性能。差示扫描量热和漏液试验表明，复合材料具有高稳定的形状和防漏性能，相变焓高达100.6 J/g。该研究为竹材提供了一种新的、快速的预处理方法，为竹材节能材料的未来应用提供了有价值的见解。

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来源期刊

European Journal of Wood and Wood Products 工程技术-材料科学：纸与木材

CiteScore

5.40

自引率

3.80%

发文量

124

审稿时长

6.0 months

期刊介绍： European Journal of Wood and Wood Products reports on original research and new developments in the field of wood and wood products and their biological, chemical, physical as well as mechanical and technological properties, processes and uses. Subjects range from roundwood to wood based products, composite materials and structural applications, with related jointing techniques. Moreover, it deals with wood as a chemical raw material, source of energy as well as with inter-disciplinary aspects of environmental assessment and international markets. European Journal of Wood and Wood Products aims at promoting international scientific communication and transfer of new technologies from research into practice.