Open AccessPreparation and properties of NIR-Responsive microcapsules
Author(s) -
Shizhuo Xiao,
Yangyang Xin,
Na Li,
Yingquan Zou,
Shuyun Zhou
Publication year - 2020
Publication title -
materials research express
Language(s) - English
Resource type - Journals
ISSN - 2053-1591
DOI - 10.1088/2053-1591/abc8be
Subject(s) - materials science , near infrared spectroscopy , particle size , phase (matter) , substrate (aquarium) , viscosity , analytical chemistry (journal) , chemical engineering , chromatography , optics , chemistry , composite material , organic chemistry , physics , oceanography , geology , engineering
In this paper, near infrared (NIR) absorbing dye and fluorane dye (FD) was successfully encapsulated into microcapsules with NIR light responsive performance. The NIR responsive microcapsules are able to be utilized in information recording and anti-counterfeiting fields. Specifically, the factors effecting on synthesis of NIR responsive microcapsules were studied in detail. Microcapsules with an average particle size of 0.2 ∼ 0.5 μ m were prepared by adjusting the mass ratio of shell/core material, the viscosity of oil phase and the mass ratio of water/oil (W/O) phase. It was found that the preferred reaction condition was the feeding mass ratio of shell/core materiel at 1:2 and the W/O phase mass ratio of 2:1. When the feeding mass ratio of NIR absorbing dye and FD is 1/10, the NIR responsive microcapsules have the best coloration performance. Then the NIR responsive microcapsules were coated on aluminum substrate and scanned by 808 nm near-infrared laser, the image precision reached 20 μ m.