4.5 Article

Sunlight-activated long persistent luminescent polyurethane incorporated with amino-functionalized SrAl2O4:Eu2+,Dy3+ phosphor

Journal

POLYMER INTERNATIONAL
Volume 65, Issue 10, Pages 1238-1244

Publisher

WILEY-BLACKWELL
DOI: 10.1002/pi.5196

Keywords

long persistent; luminescent; polyurethane; modification; luminescent effect

Funding

  1. National Natural Science Foundation of China [51273128, 21206096]
  2. New Teachers' Fund for Doctor Stations, Ministry of Education of China [20120181120116]

Ask authors/readers for more resources

An amino-terminated long persistent luminescent phosphor (Amino-SrAl2O4:Eu2+,Dy3+) was prepared based on inorganic SrAl2O4:Eu2+,Dy3+ phosphor, chemically modified with 3-aminopropyltriethoxysilane (KH550). Fourier transform infrared and X-ray photoelectron spectral, thermogravimetric and scanning electron microscopic measurements confirmed the successful synthesis of Amino-SrAl2O4:Eu2+,Dy3+. Then this amino-functionalized phosphor was introduced into polyurethane (PU) through urea linkages, and the effects of the chemical combination of Amino-SrAl2O4:Eu2+,Dy3+ and PU on the morphology, structure, storage stability, and mechanical, thermal and luminescent properties of the resultant long persistent luminescent polyurethane (LPLPU) were investigated. Compared with SrAl2O4:Eu2+,Dy3+/PU composites prepared by physical blending, the LPLPU shows better mechanical properties and storage stability due to the good compatibility of Amino-SrAl2O4:Eu2+,Dy3+ with PU. More residues and higher initial decomposition temperature are observed because the interaction of the amino-phosphor and PU delays the degradation. Study of the luminescent effect reveals that the LPLPU shows more than 10h afterglow after cessation of the excitation light, and the brightness of green light in darkness is basically the same as that of LPLPU and SrAl2O4:Eu2+,Dy3+/PU. (c) 2016 Society of Chemical Industry

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.5
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available