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Chen L, Luo L, Mao Z, Wang B, Feng X, Sui X. Electrothermal Phase Change Composite with Flexibility over a Wide Temperature Range for Wearable Thermotherapy. ACS APPLIED MATERIALS & INTERFACES 2024; 16:4089-4098. [PMID: 38268145 DOI: 10.1021/acsami.3c17269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
Flexible electrothermal composite phase change materials (PCMs) are promising candidates for portable thermotherapy. However, a great challenge remains to achieve high PCM loading while maintaining reasonable flexibility. Herein, the polypyrrole-decorated melamine foam (PPy@MF) was fabricated and thereafter applied to confine binary PCM mixtures composed of a high-enthalpy long-chain polyethylene glycol (PEG4000) and its short-chain homologue (PEG200) to make the novel PPy@MF-PEG4000+200 composite PCM. At a high loading of up to 74.1% PEG4000 and a high latent heat energy storage density of 150.1 J/g, the composite PCM remained flexible at temperature (-20 °C) far below its phase transition point thanks to the plasticine effect of PEG200. The composite also demonstrated good Joule heating performance, providing fast heating from 28 to 70 °C at low applied voltages (4.5-6.0 V). The energy could be stored efficiently and released to maintain the composites at the proper temperature. The electrothermal performance of the composite remained undisturbed during curved or repeated bending, showing good potential to be used for personal thermal management and thermotherapy.
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Affiliation(s)
- Luying Chen
- Shanghai Frontier Science Research Center for Modern Textiles, Donghua University, Shanghai 201620, China
- Key Lab of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry and Chemical Engineering, Donghua University, Shanghai 201620, China
| | - Liushan Luo
- Shanghai Frontier Science Research Center for Modern Textiles, Donghua University, Shanghai 201620, China
- Key Lab of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry and Chemical Engineering, Donghua University, Shanghai 201620, China
| | - Zhiping Mao
- Key Lab of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry and Chemical Engineering, Donghua University, Shanghai 201620, China
- Shanghai Belt and Road Joint Laboratory of Textile Intelligent Manufacturing, Donghua University, Shanghai 201620, China
- National Innovation Center of Advanced Dyeing & Finishing Technology, Shandong Zhongkang Guochuang Research Institute of Advanced Dyeing & Finishing Technology Co., Ltd., Taìan ,Shandong 271000, China
| | - Bijia Wang
- Shanghai Frontier Science Research Center for Modern Textiles, Donghua University, Shanghai 201620, China
- Key Lab of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry and Chemical Engineering, Donghua University, Shanghai 201620, China
| | - Xueling Feng
- Shanghai Frontier Science Research Center for Modern Textiles, Donghua University, Shanghai 201620, China
- Key Lab of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry and Chemical Engineering, Donghua University, Shanghai 201620, China
- Shanghai Belt and Road Joint Laboratory of Textile Intelligent Manufacturing, Donghua University, Shanghai 201620, China
| | - Xiaofeng Sui
- Key Lab of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry and Chemical Engineering, Donghua University, Shanghai 201620, China
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