The invention belongs to the technical field of chemical materials, and in particular relates to a
lyotropic color response transparent
film material and a preparation method thereof. Methods of
emulsion polymerization,
dispersion polymerization,
suspension polymerization, mini-
emulsion polymerization and the like are adopted to prepare
polymer latex which has hydrophilic groups, average particle size of between 100 and 500 nanometers, narrow
particle size distribution, and glass-
transition temperature of between 0 and 100 DEG C, the
polymer latex is coated on a substrate material and is dried; and when the
moisture is volatized, the
polymer latex can be automatically assembled into a three-dimensional order colorless transparent film arranged periodically. The transparent
film material has the advantages of quick
lyotropic color responsibility and wide-range reversible regulation; and when the film contacts with a
solvent, the colorless transparent
film material can be changed into a colorized film material with beautiful colors which disappear along with the volatilization of the
solvent. The material has excellent mechanical properties and
lyotropic color response reversibility, simple, environment-friendly and nontoxic production process, and can be prepared in large areas directly. The lyotropic
color response transparent film material can be widely applied to film or
coating materials for color response, an optical and detection sensor,
simulation, decoration, printing, anti-counterfeiting and the like.