4.7 Article

Nanotechnology for purifying nematic liquid crystals based on magnetic separation accompanied by phase transition

Journal

JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 640, Issue -, Pages 61-66

Publisher

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2023.02.087

Keywords

Liquid crystal; Ions; Purification; Magnetic separation

Ask authors/readers for more resources

In this work, the precipitation and separation of doped colloidal y-Fe2O3@OA MNPs resulting from the magnetic field accompanied by an isotropic-nematic phase transition are more efficient. The residual ion concentrations have decreased distinctly using a low gradient magnetic field with the phase transition. As a result, the commercial nematic LC can be purified by this approach based on nanotechnology.
Free ions are generally unfavorable in liquid crystal (LC) displays, and LC purification technologies are critically important. The colloidal y-Fe2O3 magnetic nanoparticles coated with oleic acid (y-Fe2O3@OA MNPs) have a high ratio of surface to volume, which may adsorb more free ions and are uniform in the LC at room temperature. In this work, the precipitation and separation of the doped colloidal y- Fe2O3@OA MNPs resulting from the magnetic field accompanied by an isotropic-nematic phase transition are more efficient than in the single case of the phase transition or the magnetic field. The residual ion concentrations have decreased distinctly using the low gradient magnetic field (V B ti 2 T/m) with the phase transition. In addition, when the doped colloidal y-Fe2O3@OA MNPs are 0.4 % and 0.2 % by weight, the former concentrations of the residual ions and y-Fe2O3@OA MNPs are lower than the latter. As a result, the commercial nematic LC can be purified by this approach based on nanotechnology in our study. (c) 2023 Elsevier Inc. All rights reserved.

Authors

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

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available