Some cellulose derivatives are employed in optical functional films because of its good transparency with high glass transition temperature. Since the main chain of cellulose has low level of optical anisotropy, orientation birefringence of a stretched film can be easily controlled by chemical modification such as esterification. Moreover, good miscibility with various plasticizers for cellulose derivatives widens the material design to control the birefringence. In this presentation, material design of a multi-band quarter-wave plate, one of the optical retardation films, is presented using cellulose derivatives.

Control of optical anisotropy of cellulose derivatives

253rd National Meeting (2017)

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