In our laboratory, we conduct research on photobleaching of cotton, snow bleaching of Japanese paper, and molecular simulation for polymer materials. We aim to develop an environmentally friendly cotton bleaching process without chlorine-based chemicals. We also investigate structural and chemical changes in kozo fibers caused by traditional snow bleaching in Nagaoka City. In addition, we develop simulation methods to design new polymer blend materials and improve polymer performance.

Photobleaching rapidly whitens cotton fabric
(left: after, right: before).