title: Anisotropic optical film embedded with cellulose nanowhisker.
abstract: We investigated anisotropic optical behaviors of composite films embedded with CNWs. To control the orientation of CNWs, elongation was applied to the composite film. Morphological and mechanical analyses of the specimens were carried out to examine the influence of the applied extension. The CNWs were found to be aligned in the elongated direction, yielding remarkable anisotropic microstructure and optical properties. As the applied elongation and CNW loading increased, the resulting degree of polarization and birefringence increased due to increased interactions between the embedded particles. This study suggests a way to prepare an anisotropic optical component with nanoparticles of which the microstructures, such as orientation and filler content, can be controlled.
authors.affiliation: Department of Fiber System Engineering, Dankook University, Jukjeon-dong, Yongin, Gyeonggi-do, Korea.
authors.forename: Dah Hee
authors.initials: DH
authors.lastname: Kim
authors.affiliation: Department of Fiber System Engineering, Dankook University, Jukjeon-dong, Yongin, Gyeonggi-do, Korea. Electronic address: ysong@dankook.ac.kr.
authors.forename: Young Seok
authors.initials: YS
authors.lastname: Song
mesh_terms: D016880:Anisotropy; D002482:Cellulose / Q000737:chemistry*; D055595:Mechanical Phenomena; D053761:Nanocomposites / Q000737:chemistry*; D055095:Optics and Photonics; D013718:Tensile Strength
chemical_list: D002482:Cellulose
keywords: Cellulose; Nanowhisker; Orientation