1538 流れ方向を変化させた時の液晶高分子溶液の構造変化に関する研究

抄録

We have investigated structural rearrangement caused in a transient Couette flow of an aqueous solution of hydroxypropylecellose (HPC). After a pre-shear flow, a subsequent flow starts in a different direction. After several strains in the subsequent one, a streak, generated in the SALS motion picture, became clear and sharp, and its direction was gradually turned to the final one. Moreover a periodic nondirective light was simultaneously observed. It was considered that the molecular orientation was gradually aligned and turned, and the synchronized tumbling motion was also generated. Then the tumbling period was getting long and an aligned structure was finally generated.