Synthesis and studies of CdS and ZnS-PE/NBR modified thermoplastic elastomeric copolymer nanocomposite films

The CdS and ZnS nanoparticles have been synthesized successfully by the simple chemical method of "layer-by-layer" in the functionalized thermoplastic elastomeric NBR/PE copolymer films. Structural and optical properties have been characterized by FT-IR, XRD, AFM, UV-vis and PL spectroscopy measurements. The XRD results indicate that CdS and ZnS nanoparticles were formed with hexagonal and cubic phase with their preferred orientation along the [002] and [111] in the polymeric matrix, respectively. The optical measurements of the CdS and ZnS nanoparticles are apparently blue-shifted compared to a bulk which indicates the decreases of the particles size. The direct allowed band gap was estimated 2.67 eV for CdS and 3.72 eV for ZnS nanoparticles. According to the characterization methods, it was revealed that the average grain size for the both materials takes the values in 5-10 nm. (C) 2015 Elsevier B.V. All rights reserved.