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

• ZnS and CdS NPs successfully synthesized in the Modified PE/NBR Copolymer.
• The neat modified copolymer and obtained PNC's have been studied comparatively by FT-IR spectroscopy.
• Optical properties of the PNC's were studied by PL, UV-Vis techniques.
• Scheme of the stabilization process of the NPs and synthesis reaction is given.
• Structural properties, morphology of the PNC’s is studied by XRD and AFM techniques.

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.

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