A study of linear optical properties of ternary blends PVA/CMC/aloe vera biofilm for UV shielding
- PDF / 5,491,177 Bytes
- 10 Pages / 595.276 x 790.866 pts Page_size
- 44 Downloads / 139 Views
ORIGINAL ARTICLE
A study of linear optical properties of ternary blends PVA/CMC/aloe vera biofilm for UV shielding N. R. Dhineshbabu1 · R. Vettumperumal2 · R. Kokila3 Received: 24 September 2020 / Accepted: 11 November 2020 © King Abdulaziz City for Science and Technology 2020
Abstract In this study, the solvent casting method was applied to prepare ternary blend PVA/CMC/aloe vera (60%/20%/20%) biofilms in the form of the freestanding polymeric film. The X-ray diffraction pattern revealed 93% of crystallinity of the polymeric film. The presence of functional bonding on the biofilms was analyzed by Fourier-transform infrared spectroscopy. The hardness and Young’smodulus of the prepared biofilms were examined by the nanoindentation technique. Ultraviolet (UV) absorption spectroscopy study showed that the PVA/CMC/aloe vera (PCA) blended biofilm absorption was around 280 nm, indicating a well-defined n − π* electronic transition. From the UV spectroscopy study, the absorption coefficient; Urbach energy; direct, indirect, and forbidden bandgap; optical and dielectric constant, and loss tangent of the PCA biofilm were calculated. Viscoelastic behavior of the PCA polymeric film was verified from the determined plasticity index value. The shielding efficiency of this ternary biofilm could be considered as a potential candidate for future technology-based device/ packaging applications. Keywords Pva/cmc/aloe vera (PCA) · Bandgap · UV spectroscopy study · Shielding efficiency
Introduction In this study, intelligent environment-friendly biopolymers were developed as an advanced proprietary tool in scientific and technological research. These biodegradable thermoplastics have outstanding properties such as processing, flexibility, inexpensive, and other physical properties, and contain no toxic additives. These products represent a viable biodegradable material that can be used to meet a specific requirement for a variety of applications such as lacquers, resins, surgical threads, and food packaging materials (Amass et al. 1998; DeMerlis and Schoneker 2003; Tayser et al. 2015; Tianqi et al. 2019). Generally, for the blending * N. R. Dhineshbabu [email protected]; [email protected] 1
Department of Electronics and Communication Engineering, Aditya Engineering College, East Godavari Dist, Surampalem 533437, Andhra Pradesh, India
2
Department of Physics, Fodhdhoo School, NoonuAttol 04120, Republic of Maldives
3
Department of Nanoscience and Technology, K. S. Rangasamy College of Technology, Triuchengode 627513, Tamil Nadu, India
process, ahomogeneous mixture of at least two macromolecular substances is chemically/physically interacted based on their properties. This plays a significant role in the modification/expansion of new polymeric material with essential features that diverge from their parent polymers (He et al. 2004; Robeson, 2014). This process is an effective method for the preparation of a composite or a blended polymer matrix with a high degree of miscibility and reduces the interfaci
Data Loading...
