Preparation, Characterization and Spectroscopic Investigations of PEOX-PVOH Blend Films

• Main Authors: Manohara S. R., Rajashekara T. N., Shubha A., Subhranshu S. S., Murugendrappa M. V., Navya P. N.
• Format: Article
• Language: English
• Published: IFSA Publishing, S.L. 2017-03-01
• Series: Sensors & Transducers
• Subjects: Polymer blend; Solution casting; Band edge; Band gap; Optical spectroscopy.
• Online Access: http://www.sensorsportal.com/HTML/DIGEST/march_2017/Vol_210/P_2913.pdf

A stable and free standing polymer blend films of poly (2-ethyl-2-oxazoline) [PEOX] and poly(vinyl alcohol) [PVOH] were prepared by solution casting technique at different weight percentages (70/30, 50/50, 30/70). The prepared blends were characterized by scanning electron microscopy (SEM), and ultraviolet-visible (UV-Vis) and Fourier transform infrared (FTIR) spectroscopy. Various optical properties such as absorption band edge, direct and indirect band gap, and optical activation energy were obtained by UV-Vis spectral analysis. FTIR analysis confirms the specific hydrogen bonding between –CH3 groups of PEOX and –OH groups of PVOH, and also the hydrophilic nature of the blends.