| POLYMERS AND POL YMER MATRIX COMPOSITES |
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| Superhydrophobicity Modification of Photothermally Induced Materials and Its Effect on Photothermal Conversion Performance |
| DU Mimi1, XUE Chaohua1,*, GUO Xiaojing2, JIA Shuntian1
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1 College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China
2 School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China |
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Abstract Photothermal coating of polydopamine/polydimethylsiloxane (PDA/PDMS) with superhydrophobicity was fabricated on cotton textile by self-polymerization of dopamine hydrochloride (DA) on the fiber surface. The formed polydopamine (PDA) nanoparticles can not only rough the surface of fibers but also endow the textile photothermal conversion performance, followed by post-treatment with polydimethylsiloxane (PDMS). The PDMS characteristic of the low surface energy was combined with the micro/nano structure of the material surface, in order to offer the superhydrophobic property to the textiles.Thermal infrared camera was used to test the photothermal properties of the material, scanning electron microscope (SEM) was used to observe the microstructure of the material surface, and the hydrophobic properties of the material surface were evaluated through contact angle measuring instrument. The results show that surface temperature of the textile can reach 66.2 ℃ after 1 kW/m2 simulated sunlight for 5 min, and that the water contact angle of the material is up to 161° with the rolling angle as low as 0.9°. It showed excellent superhydrophobic self-cleaning performance, which protects the photothermal coating from being polluted by dirt so as to guarantee the durability of the photothermal conversion efficiency.
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Published: 10 August 2022
Online: 2022-08-15
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| Fund:National Natural Science Foundation of China (51572161) and Major Project of Ministry of Science and Technology of China (2017YFB0307700). |
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2022, Vol. 36 
