S051045 Visualization of solidified reaction of photopolymer using micro-encapsulated thermo-chromic liquid crystal

Abstract

A parallel disk viscometer was used to investigate the solidification of a photopolymer under shear. Micro-encapsulated thermo-chromic liquid crystal was used to detect the solidification through temperature increase. Under the shear flow, delay of solidification was observed at the radial outer region of the disk, where the shear rate was higher than the inner ragion. In progress of the solidification, the delay was recovered. This delay was induced by the radial non-uniformity of the velocity gradient between the parallel disks.