Preparation and Photochromic Behavior of Spiropyran-Containing Fluorinated Polyacrylate Hydrophobic Coatings

Abstract

In this study, spiropyran (SP)-containing fluorinated polyacrylate (F-PA−SP) latex was prepared by emulsion polymerization using fluorinated and SP-based acrylic monomers as raw materials. Fourier transform infrared and 1 H NMR demonstrate that the F-PA−SP copolymer has been successfully synthesized, and dynamic light scattering and transmission electron microscopy analyses indicate that the synthesized latex has presented a uniform particle size of approximately 200 nm. X-ray photoelectron spectroscopy, atomic force microscopy, and water contact angle (WCA) analyses were used to investigate the surface properties of the F-PA−SP coating and demonstrate that its hydrophobicity is enhanced by the addition of a fluorinated acrylic monomer. The photochromic properties of the coating were investigated by UV/vis spectroscopy, and the results reveal that the F-PA−SP coating possesses better photoresponsiveness, fatigue resistance, and photoreversibility under UV/vis irradiation than the coating prepared using fluorinated polyacrylate/SP blended latex. Moreover, the WCA of the F-PA−SP coating subjected to UV/vis irradiation shows minimal changes and retains its excellent hydrophobicity. Finally, the F-PA−SP latex was applied to cellulosic paper, and the resulting photochromic paper exhibits outstanding reversible color changes and hydrophobicity.

Influence of Varied Fluorine Contents on Long-Term Storage Stability of Polyacrylate Nanoparticles and Film Properties

“…Over the past decade, a variety of polymeric nanoparticles have been reported in the literature, including polyolefins [11], polyesters [12], polyurethanes [13], polyaryletherketones [14], polysaccharide [15], and polyacrylates [16] as well as their copolymers [16]. Polymeric nanoparticles and their films possess prominent economic value, which are applied for finishing agent [17,18], anticorrosion coating [19], photoresponsive material [20], dielectrics, and adhesives [21].…”

Fabricated of Superhydrophobic Silanized Melamine Sponge with Photochromic Properties for Efficiency Oil/Water Separation

“…All chemicals used as received without further puri cation. 1′-(2-Methacryloxyethyl)-3′,3′-dimethyl-6nitro-spiro(2H-1-benzopyran-2′,2′-indoline) (SPMA) was synthesized according to previous work [39], showed in Figure 1(b).…”

“…In our group, epoxy resin is thoroughly mixed with an SP derivative to formulate anti-counterfeiting coatings that could be applied to exible substrates, such as food and medicine packaging [38]. Spiropyran (SP)-containing uorinated polyacrylate (F-PA-SP) latex is prepared by emulsion polymerization, which is potential to cellulosic paper with outstanding reversible color changes and hydrophobicity [39].…”

Photochromic Polyamide 6 Based on Spiropyran Synthesized via Hydrolyzed Ring-Opening Polymerization

“…Since last decades, incorporation of photochromic SP into the polymeric matrix could be accomplished by chemical binding via different polymerization reactions and modification of polymer substrate [ 17 , 18 ]. Chemical modification and covalent bonding of SP to the polymer matrix via polymerization will enhance the photostability and photofatigue and the spiropyran moiety can be used in most polymerization conditions.…”