Superhydrophobic and luminescent cotton fabrics prepared by dip-coating of APTMS modified SrAl₂O₄:Eu²⁺,Dy³⁺ particles in the presence of SU8 and fluorinated alkyl silane

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• 作者：Jing LI (李 婧)^a ; ^b ; Yan ZHAO (赵 燕)^b ; ^{yan.zhao@deakin.edu.au" class="auth_mail" title="E-mail the corresponding author} ; Mingqiao GE (葛明桥)^a ; ^{ge_mingqiao@126.com" class="auth_mail" title="E-mail the corresponding author} ; Sida FU (符思达)^b ; Tong LIN (林 童)^b
• 关键词：superhydrophobicity ; luminescent properties ; SrAl2O4 ; Eu2+ ; Dy3+ particles ; cotton fabric ; dip-coating ; rare earths
• 刊名：Journal of Rare Earths
• 出版年：2016
• 出版时间：July 2016
• 年：2016
• 卷：34
• 期：7
• 页码：653-660
• 全文大小：1757 K

文摘

An organic-inorganic composite dip-coating method was adopted in order to obtain ideal water repellent cotton fabrics. To be specific, a dual-functional coating with both superhydrophobic and luminescent properties was prepared on cotton fabric by using a dip-coating solution comprising (3-aminopropyl) trimethoxysilane (APTMS) modified SrAl₂O₄:Eu²⁺,Dy³⁺ particles, SU8, and fluorinated alkyl silane (FAS). The micro/nano-scale roughness generated by SrAl₂O₄:Eu²⁺,Dy³⁺ particles, together with low-surface-energy FAS, rendered the cotton fabric superhydrophobic with a water contact angle of about 160° and a sliding angle as small as 2°. The coated fabric could withstand at least 100 cycles of standard laundry. The emission spectra of the coated fabric showed two emission peaks at 440 and 520 nm, which belonged to the blue and yellow-green color areas, respectively. The afterglow duration of the coated fabric was mainly influenced by the different depths of the trap levels in the SrAl₂O₄:Eu²⁺,Dy³⁺.