Structural colors can be used in fabrics coloring due to their bright color and non-fading properties. However, it is still a challenge to construct structural color on the high crystallinity,...

Structural coloration as the most possible way to realize the ecofriendly dying process for textiles or fabrics has attracted significant attention in the past decades. However, photonic crystals (PCs) are a typical example of materials with structural color usually located on the surface of the fabrics or textiles, which make them not stable when rubbed, bent, or washed due to the weak interaction between the PC coatings and fabrics. Here, double networks were constructed between the PC coatings and the fabrics for the first time via a hydrogen bond by introducing tannic acid (TA) and dynamic cross-linking with 2-formylphenylboronic acid to increase the wash resistance of the structural colored fabrics. On modifying the monodispersed SiO2 nanoparticles, poly­(dimethylsiloxane), and the fabrics, the interaction between the PC coatings and the fabrics increased by the formation of double networks. The structural color, wash, and rub resistance of the PC-coated fabrics were systematically studied. The obtained fabrics with the TA content at 0.030% (SiDT30) showed the best wash and rub resistance. The construction of double networks not only improved the wash and rub resistance of PCs but also retained the bright structural color of the PC coatings, facilitating the practical application of structural coloration in the textile industry.

Photonic crystals (PCs) prepared from monodispersed nanoparticles into regular lattices has attract great attention in the past decades. PCs have showed great advantages in textiles comparing with the traditional dyes due to their bright color, not fade and environment friendly. However, textiles colored by PCs generally do not have antifouling properties and poor stability on the fabrics makes them not resistant to wash. In this work, monodispersed SiO 2 and polydimethylsiloxane (PDMS) with low glass transition temperature is chosen to make up the PCs coatings. To increase the stability of the PCs on the fabrics SiO 2 nanoparticles was also modi ed by PDMS. Then the washability and antifouling properties of the PCs coated fabric was systematically studied. To further verify the availability of this method, fabrics with different chemical compositions, weaving modes, surface densities, and original color were used as the substrate to construct PCs-coatings. The in uence of the fabrics structure on the structural color, re ectance spectrum, and stability of the coatings were further studied. This work will play as a guide for constructing washable and antifouling PCs on different fabric surfaces.

A series of three-armed star polystyrene-block-poly(n-butylacrylate) copolymers (PS-b-PBA)3 were synthesized to study the phase-transition behavior of the copolymers. The order-to-disorder transition temperature has been determined by oscillatory at different temperatures and dynamic temperature sweep at a fixed frequency. Moreover, the micro-phase separation in the block copolymers has been evaluated by time–temperature superposition, while the free volume and the active energy of the copolymers have been calculated. Interestingly, active energy decreased with the increase in the molecular weight of the PBA components. To further determine the order-to-disorder transition temperature precisely, small angle X-ray scattering was performed at different temperatures. These results confirm that the chain mobility of the star-shaped copolymers is strongly dependent on the arm molecular weight of the star polymers, which will be beneficial for the processing and material preparation of the block copolymers.

Photonic crystals (PCs) prepared from monodispersed nanoparticles into regular lattices has attract great attention in the past decades. PCs have showed great advantages in textiles comparing with the traditional dyes due to their bright color, not fade and environment friendly. However, textiles colored by PCs generally do not have antifouling properties and poor stability on the fabrics makes them not resistant to wash. In this work, monodispersed SiO2 and polydimethylsiloxane (PDMS) with low glass transition temperature is chosen to make up the PCs coatings. To increase the stability of the PCs on the fabrics SiO2 nanoparticles was also modified by PDMS. Then the washability and antifouling properties of the PCs coated fabric was systematically studied. To further verify the availability of this method, fabrics with different chemical compositions, weaving modes, surface densities, and original color were used as the substrate to construct PCs-coatings. The influence of the fabrics structure on the structural color, reflectance spectrum, and stability of the coatings were further studied. This work will play as a guide for constructing washable and antifouling PCs on different fabric surfaces.