文献类型：期刊文献

英文题名：Fabrication Flexible and Luminescent Nanofibrillated Cellulose Films with Modified SrAl2O4: Eu, Dy Phosphors via Nanoscale Silica and Aminosilane

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

第一作者：张龙飞;Zhang, Longfei

通信作者：Chen, ZL[1];Wang, SQ[1];Wang, SQ[2]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[2]Univ Tennessee, Ctr Renewable Carbon, Knoxville, TN 37996 USA

年份：2018

卷号：8

期号：5

外文期刊名：NANOMATERIALS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000435198300083)】；

基金：The authors gratefully acknowledge the National Nonprofit Institute Research Grant of CAF (CAFYBB2017ZX003) and USDA National Institute of Food and Agriculture (Hatch project 1012359). Additional thanks to financial support from China Scholarship Council (CSC). We also greatly thank Yun Lu and Yuan Chen at CAF for their detailed guidance and valuable suggestions for enhancing this paper with chemical analysis.

语种：英文

外文关键词：nanofibrillated cellulose; luminescent; phosphor; modification; composite film

摘要：Flexible 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO)-oxidized nanofibrillated cellulose (ONFC) films with long afterglow luminescence containing modified SrAl2O4: Eu2+, Dy3+ (SAOED) phosphors were fabricated by a template method. Tetraethyl orthosilicate (TEOS) and (3-aminopropyl) trimethoxy-silane (APTMS) were employed cooperatively to improve the water resistance and compatibility of the SAOED particles in the ONFC suspension. The structure and morphology after modification evidenced the formation of a superior SiO2 layer and coarse amino-compounds on the surface of the phosphors. Homogeneous dispersions containing ONFC and the modified phosphors were prepared and the interface of composite films containing the amino-modified particles showed a more closely packed structure and had less voids at the interface between the cellulose and luminescent particles than that of silica-modified phosphors. The emission spectra for luminescent films showed a slight blue shift (3.2 nm) at around 512 nm. Such flexible films with good luminescence, thermal resistance, and mechanical properties can find applications in fields like luminous flexible equipment, night indication, and portable logo or labels.