Preparation and application of alkyl alcohol azobenzene photothermal cotton fabric
In order to improve the temperature-raising performance of personal thermal management fab-rics,an alkyl alcohol azobenzene cotton fabric with photothermal properties was developed through the cou-pling of alkyl alcohol azobenzene and azobenzene.The phase transition points of alkyl alcohol azobenzene with different proportions affected the photothermal properties.The alkyl alcohol azobenzene fabric with 3∶7 ratio exhibited higher phase transition temperature,reaching 68.4℃.It achieved isomerization metastable state within 12 min and returned to stable state within 15 min,demonstrating fast photothermal response rate.Un-der the intensity of 600 W/m2,the average surface temperature of alkyl alcohol azobenzene cotton fabric reached 43.9℃,showing 38.5%improvement in photothermal performance compared to regular cotton fabric.The alkyl alcohol azobenzene fabric exhibited excellent photothermal properties.
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