|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||2018 Technical Division Student Poster Competition
||SPG-7: Determination of Crystalline Domains Alignment in the Cellulose Nanocrystal Films with an Improved Birefringence Technique
||Reaz A Chowdhury, Jeffrey Youngblood
|On-Site Speaker (Planned)
||Reaz A Chowdhury
Birefringence, regarding the transmitted light intensity, has been investigated for the determination of crystal orientation of a cellulose nanocrystal (CNC) film. Conventional UV-Vis spectrometer was utilized for the measurement of bright and dark field transmittance light intensity that leads to the order parameter determination for isotropic and anisotropic CNC films. A transition from the chiral to nematic chiral configuration was explored regarding the optical transparency. Two-dimensional X-ray diffraction technique was compared to the birefringence technique to explore the presence of aligned short order amorphous domain, which is significant in the anisotropic region. Hence, the new birefringence method offered a more accurate order parameter determination, which is feasible, reproducible, and inexpensive with compared to other traditional techniques.