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- Title
Surface and spectroscopic properties of CdSe/ZnS/PVC nanocomposites.
- Authors
Ahmed, R.M.
- Abstract
It is valuable to understand the way the wettability is affected by the solid and the liquid surface free energies. For this study, transparent films of CdSe/ZnS/PVC nanocomposites have been prepared and characterized by FTIR and contact angle measurements. Moreover, the presence of polar interactions at the liquid/polymer interfaces, which show a proportionality to the polar components of the liquid surface energy for pure polyvinyl chloride (PVC) and all CdSe/ZnS/PVC nanocomposites, is also studied. By using the surface polarizability hypothesis, there is possibility to obtain the dispersion component of surface-free energies of pure PVC and also its nanocomposites from the contact angles measurement of only polar liquids. This approximately is coincident with that published data for pure PVC obtained from both polar and nonpolar liquids' contact angles. In addition to this, the absorption spectra and the photoluminescence illustrate clearly the effect of CdSe/ZnS quantum dots on their host matrix. The calculated values of the optical parameters, such as energy gap and Urbach energy, illustrate an inverse proportionality between them. POLYM. COMPOS., 38:749-758, 2017. © 2015 Society of Plastics Engineers
- Subjects
POLYVINYL chloride; OPTICAL properties of cadmium selenide; OPTICAL properties of zinc sulfide; OPTICAL properties of nanocomposite materials; PHOTOLUMINESCENCE measurement
- Publication
Polymer Composites, 2017, Vol 38, Issue 4, p749
- ISSN
0272-8397
- Publication type
Article
- DOI
10.1002/pc.23634