International Conference

Permanent URI for this collectionhttps://dspace.psgrkcw.com/handle/123456789/41

Browse

Author: search.filters.author.Chandrashekar BHas files: Yes

Search Results

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    SYTHESIS AND CHARACTRIZATION OF CHITOSAN BIOPOLYMER
    (Kongunadu Arts and Science College, Coimbatore, 2019-09-19) Thilagavathi P; Sharmila C; Ranjith Kumar R; Chandrashekar B
    Chitin is one of the most abundant natural polysaccharides and it is mainly used for the production of chitosan by a de-acetylation process. Chitosanis a biopolymer used as a packing material in food industry. Chitosan biopolymer is an effective material, due to its functional properties such as antibacterial activity, non-toxicity and biodegradability. The main objective of the study focuses on the synthesis and characterization of the chitosan biopolymer. The chitosan is synthesized by wet chemical synthesis method. The absorbance characteristic was studied by UV visible spectroscopic technique. The crystallinity of the material was confirmed by X-ray diffraction technique. The morphological structure of the polymer sheet was confirmed by SEM analysis. The mechanical strength of the chitosan bio-polymer was analyzed by Tensile and Tear techniques and from the result it is observed that the elongation% and force of biopolymer sheet is about 117% and 1.12 N.
  • No Thumbnail Available
    Item
    STRUCTURAL AND OPTICAL CHARACTERIZATION OF AG DOPED ZNO NANOPARTICLES
    (Amritha University, Coimbatore, 2016-12-20) Selvi C; Jincy C S; Sharmila C; Chandrashekar B
    Ag doped ZnO nanoparticles were synthesized by wet chemical process. The synthesized Ag doped ZnO nanoparticles were characterized by different characterization techniques like UV double beam spectrophotometer, X-ray diffraction (XRD), Photoluminescence (PL), Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM) along with Energy Dispersive X-ray analysis (EDAX). From the optical characterization it was found that Ag doped ZnO nanoparticles exhibit a broad absorption peak corresponding to 380nm to 400nm. The band gap energy of the as prepared Ag doped ZnO nanoparticles were calculated. From the PL spectra the emission band was found at 555nm. The structural characterization reveals that the synthesized nanoparticles were highly crystalline in nature, possessing spherical and cube shaped grains and are grown in high density. The average grain size was determined from X-ray line broadening spectra using Debye-Scherrer equation. From the characterizations it was found that Ag doped ZnO nanoparticle have a wide range of optical applications.