Abstract
AbstractWhen pursuing sustainable approaches to fabricate photonic structures, nature can be used as a source of inspiration for both the nanoarchitecture and the constituent materials. Although several biomaterials have been promised as suitable candidates for photonic materials and pigments, their fabrication processes have been limited to the small to medium-scale production of films. Here, by employing a substrate-free process, structurally coloured microparticles are produced via the confined self-assembly of a cholesteric cellulose nanocrystal (CNC) suspension within emulsified microdroplets. Upon drying, the droplets undergo multiple buckling events, which allow for greater contraction of the nanostructure than predicted for a spherical geometry. This buckling, combined with a solvent or thermal post-treatment, enables the production of dispersions of vibrant red, green, and blue cellulose photonic pigments. The hierarchical structure of these pigments enables the deposition of coatings with angular independent colour, offering a consistent visual appearance across a wide range of viewing angles.
Publisher
Springer Science and Business Media LLC
Subject
General Physics and Astronomy,General Biochemistry, Genetics and Molecular Biology,General Chemistry,Multidisciplinary
Reference53 articles.
1. Maile, F. J., Pfaff, G. & Reynders, P. Effect pigments - past, present and future. Prog. Org. Coat. 54, 150–163 (2005).
2. Pfaff, G. Special Effect Pigments: Technical Basics and Applications. (Vincentz Network, 2008).
3. Green, D. S., Jefferson, M., Boots, B. & Stone, L. All that glitters is litter? Ecological impacts of conventional versus biodegradable glitter in a freshwater habitat. J. Hazard. Mater. 402, 124070 (2021).
4. ten Kate, A., Schipper, I., Kiezebrink, V. & Remmers, M. Beauty and a beast: child labour in India for sparkling cars and cosmetics. Sticht. Onderz. Multinatl. Ondernem. (2016).
5. Burg, S. L. & Parnell, A. J. Self-assembling structural colour in nature. J. Phys. Condens. Matter 30, 413001 (2018).
Cited by
36 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献