文献类型：期刊文献

英文题名：Preparation and characterization of dual-functional coatings of nanofibrillated cellulose and modified SrAl2O4: Eu, Dy phosphors

作者：Zhang, Longfei[1,2] Lyu, Shaoyi[1,2] Chen, Zhilin[1] Wang, Siqun[1,2]

第一作者：张龙飞;Zhang, Longfei

通信作者：Chen, Zhilin|[a0005007664f28b6d2226]陈志林;

机构：[1] Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing, 100091, China; [2] Center for Renewable Carbon, University of Tennessee, Knoxville, TN, 37996, United States

年份：2018

卷号：349

起止页码：318-327

外文期刊名：Surface and Coatings Technology

收录：EI(收录号：20182805531610);Scopus(收录号：2-s2.0-85049535483)

语种：英文

外文关键词：Morphology - X ray diffraction analysis - Nanocrystals - Blending - Contact angle - Fourier transform infrared spectroscopy - Emission spectroscopy - Film preparation - Polyvinyl alcohols - Surface roughness - X ray photoelectron spectroscopy - Chemical analysis - Chemical vapor deposition - Coatings - Hydrophobicity - Surface morphology

摘要：To prepare luminescent and superhydrophobic dual-functional coating materials, SrAl2O4:Eu2+, Dy3+ (SAOED) phosphors were modified with tetraethyl orthosilicate and (3-aminopropyl)trimethoxysilane for enhancing the water resistance and surface activity. Dual-functional coatings were fabricated by blending nanocellulose, 1,2,3,4-butanetetracarboxylic acid (BTCA), and modified SAOED phosphors on the poly(vinyl alcohol) pretreated surfaces of wood substrates using a two-step process combining spraying and chemical vapor deposition. The surface morphology, chemical structure, and mechanical properties of the hybrid coatings were characterized by SEM, energy dispersive X-ray analysis, FTIR, X-ray photoelectron spectroscopy, and abrasion tests. Incorporation of the modified SAOED particles and ONFC induced surface roughness on the wood surface with simultaneous afterglow luminescence and superhydrophobicity after low-energy modification. The water contact angle of the coating could go up to 153° and the slide angle was only 8.5°. The emission spectra for hybrid films showed a slight blue shift (2.8 nm) at around 512 nm compared to the SAOED particles. The obtained superhydrophobic wood materials with long afterglow luminescence can find application in interior decoration, intelligent ceilings, night indicators, or luminous logos and labels. ? 2018 Elsevier B.V.