A new approach for the preparation of durable and reversible color changing polyester fabrics using thermochromic leuco dye-loaded silica nanocapsules

Abstract

Durable, reversible color changing polyester fabrics were successfully fabricated using thermochromic leuco dye-loaded silica nanocapsules via dyeing.

Raspberry‐Shaped Thermochromic Energy Storage Nanocapsule with Tunable Sunlight Absorption Based on Color Change for Temperature Regulation

“…RTESN ( W paraffin@PSG / W amino‐TLD@SiO2 = 1:4) is spherical with rough surfaces composed of nanoparticles, showing as a raspberry ( Figure a,b). The size of these nanoparticles on the surface is about 20 nm, which can be identified as amino‐TLD@SiO 2 according to our previous study . The size of the RTESN is between 300 and 500 nm with an average particle size of 450 nm (Figure S4, Supporting Information).…”

“…The thermal stability of RTESN with different W paraffin@PSG / W amino‐TLD@SiO2 were evaluated by thermogravimetry in nitrogen atmosphere from 100 to 700 °C. In Figure , the onset distinct weight loss appears in the range of 150–230 °C, which is attributed to the decomposition of the core material of amino‐TLD@SiO 2 . The following weight loss between 230 and 350 °C results from the decomposition of paraffin .…”

“…Materials : Styrene, divinyl benzene, acrylic acid, azodiisobutyronitrile, glycidyl methacrylate, paraffin (54–56 °C), tetraethyl orthosilicate (TEOS), sodium dodecyl benzenesulfonate (SDBS), NH 3 ·H 2 O (28%), HCl solution (0.5 N), ethanol, petroleum ether, and bromocresol green were of chemical grade, and obtained from Sinopharm Chemical Reagent Co., Ltd, China. Polyvinylpyrrolidone (PVP, molecular weight:350 000) was provided by Ark Pharm, Inc. 3‐Aminopropyltriethoxysilane was obtained from Jingzhou Jianghan Fine Chemical Co., Ltd. Thermochromic materials were synthesized according to the previous study . Among which, red and black thermochromic materials were synthesized by using different color former of thermochromic red (TF‐R1), thermochromic black (TF‐BL) provided by Changshu dye chemical plant.…”

“…In our previous study, leuco‐dye based thermochromic nanoparticle with silica shell was prepared through sol–gel method. The prepared thermochromic dye possessed sensitive thermal‐color change and higher thermal conductivity due to its large surface area and the silica shell.…”

A graphene-based electro-thermochromic textile display

“…7 Thermochromic textile devices have already been demonstrated using metal oxide (such as CoO and Pb 3 O 4 ) and leuco dye or polymer (such as polydyne) through various methods of textile integration such as coating, 8 spinning, 9 and dyeing. 10 Thermochromic dyes are composed of thermochromic molecules (TMs). These molecules have the property to change in colour when exposed to an increase in the surrounding temperature (above a certain critical temperature, T c ).…”