Photostability and Durability Properties of Photochromic Organosilica Coating on Fabric

Abstract

Photochromic fabrics were prepared by a dipcoating method using a silica sol-gel solution containing photochromic dyes. The coated fabric showed a rapid photochromic response. Three methods; incorporating a UV stabilizer in the coating layer, hydrophobic treatment of the porous surface, and covering the coating layer with an additional silica layer; were used to improve the photostability and durability. All three treatments improved the photostability without noticeably changing the photochromic response/fading speeds. Most of the treatments reduced the washing and abrasion durability. The extra coating layer increased the fabric rigidity.

Synthesis and Characterization of Superhydrophobic, Self-cleaning NIR-reflective Silica Nanoparticles

“…The observed hydrophobicity of the lotus leaf surface has led to extensive research into the development of hydrophobic surfaces with hierarchal architectures13. For example, fabrics coated with dye incorporated silica nanoparticles were tested for the durability and wash fastness14, along with change in hydrophobicity with time151617.…”

Progress in Sol-Gel Technology for the Coatings of Fabrics

“…The color strength values (K/S), K/S (max) , changing in optical density and color difference (dE*) values of silane coated photochromic fabric is shown in Figure 25. In another work Parhizkar et al [176,177] prepared a photochromic textile fabric with the help of sol-gel coating with various silanes and the photochromic response depended on the type of silane used.…”

“…The overall results show that this treatment increased the abrasion resistance up to five times. In another work Parhizkar et al [176,177] prepared a photochromic textile fabric with the help of sol-gel coating with various silanes and the photochromic response depended on the type of silane used.…”

Спектральные Проявления Взаимодействия Наночастиц Диоксида Кремния С Молекулами Фотохромных Соединений

“…Наночастицы диоксида кремния с адсорбированными молекулами спирооксазина проявляли положительный фотохромизм и использовались для получения фотохромных тканей [12][13][14][15][16]. С той же целью разрабатывались фотохромные наночастицы диоксида кремния, полученные путем ковалентной иммобилизации фотохромных силилированных нафтопиранов (хроменов) [17][18][19].…”