Study of interfaces in polymer-metal oxide films and free-volume hole using low-energy positron lifetime measurements
Source abstract
Abstract
To reveal how the distribution of different nano fillers affect the UV-shielding efficiency of their polymer-based composites and to further develop a simple strategy to refrain the erection of the composites, we prepared ZnO doped polystyrene (PS/ZnO) and TiO2 doped polystyrene (PS/TiO2) films by the solution cast technique with different concentrations of ZnO and TiO2 (0.25%, 0.5%, 0.75% and 1%.). Contrary to the common observation, the better tunability for UV shielding efficiency was found in the case of TiO2 as compared to ZnO. This is mainly due to the appearance of a rod like structure on neat PS which has improved the dispersion as well as provides a higher interface area that enhanced the UV-absorption efficiency of the PS matrix. This analysis is equally supported by the PALS study where the free volume was closely associated with the interfacial interaction between the filler and the PS matrix. These observations recommend that the better dispersion of filler particles leads a stronger interfacial interaction and enhances the UV-protection efficiency of the composite materials.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Muon and positron interactions and applications · Polymer crystallization and properties · Polymer Nanocomposite Synthesis and Irradiation
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (29)
Show source-provided references
1. Positron annihilation characterization of TiO2 doped polystyrene10.4028/www.scientific.net/MSF.771.169 ↗
2. UV-shielding efficiency of TiO2-polystyrene thin films prepared by solution cast method10.1088/1742-6596/836/1/012048 ↗
3. Effect of Cd dopant on electrical and optical properties of ZnO thin films prepared by spray pyrolysis route10.1016/j.tsf.2012.10.100 ↗
4. Evolution of the optical properties of Polystyrene thin films filled with Zinc Oxide nanoparticles
5. Investigation of interfacial interaction and structural transition for epoxy/nanotube composites by positron annihilation lifetime spectroscopy10.1063/1.3067873 ↗
6. Effect of interfacial interaction on free volumes in phenolformaldehyde resine carbon nanotube composites: positron annihilation lifetime and age momentum correlation studies10.1039/c2cp41057e ↗
7. Preparation and characterization of carbon nanotube/polyacrylonitrile composites10.1002/1527-2648(200203)4:3<109::AID-ADEM109>3.0.CO;2-5 ↗
8. Simultaneous enhancements of UV-shielding properties and photostability of poly(vinyl alcohol) via incorporation of sepia eumelanin10.1021/acssuschemeng.5b01734 ↗
9. Transparent poly(methyl methacrylate)/TiO2 nanocomposites for UV shielding applications10.1134/S0965545X11100099 ↗
10. Poly(L-lactide)/ZnO nanocomposites as efficient UV-shielding coatings for packaging applications
11. Influence of interfacial layers upon the barrier properties of polymer nanocomposites10.1063/1.3079138 ↗
12. Characterization of free volume and density gradients of polystyrene surfaces by low-energy positron lifetime measurements10.1016/j.polymer.2004.04.008 ↗
13. Scrosati · 1988
14. Functional inorganic nanofillers for transparent polymers10.1039/b608177k ↗
15. The effect of film thickness and TiO2 content on film formation from PS/TiO2 nanocomposites prepared by dip-coating method
16. Cu nanoparticles induced structural, optical and electrical modification in PVA10.1016/j.matchemphys.2012.04.004 ↗
17. Electrical and optical properties of pure and silver nitrate-doped polyvinyl alcohol films10.1016/S0167-577X(02)00434-2 ↗
18. The effect of protein-free versus protein-containing medium on the mechanical properties and uptake of ions of PVA/PVP hydrogels
19. On the optical and thermal properties of in situ/ex situ reduced Ag NP's/PVA composites and its role as a simple SPR-based protein sensor10.1007/s13204-011-0010-7 ↗
20. Characterization of free volume during vulcanization of styrene butadiene rubber by means of positron annihilation lifetime spectroscopy and dynamic mechanical test
21. Effects of functionalization on thermal properties of single-wall and multi-wall carbon nanotube polymer nanocomposites10.1021/nn400726g ↗
22. Thermal boundary resistance at the graphene-oil interface10.1063/1.3251794 ↗
23. Effects of chemical modifications on the thermal conductivity of carbon nanotube composites10.1063/1.1887839 ↗
24. Correlation between the free volume and thermal conductivity of porous poly(vinyl alcohol)/reduced graphene oxide composites studied by positron spectroscopy10.1016/j.carbon.2015.10.041 ↗
25. Evaluation and identification of electrical and thermal conduction mechanisms in carbon nanotube/epoxy composites10.1016/j.polymer.2006.01.029 ↗
26. Thermal conductivity of a graphene oxide carbon nanotube hybrid/epoxy composite10.1016/j.carbon.2012.07.029 ↗
27. Effects of process parameters on the defects in graphene oxide-polyaniline composites investigated by positron annihilation spectroscopy10.1039/c3cp54032d ↗
28. High-performance composite membrane with enriched CO2-philic groups and improved adhesion at the interface10.1021/am500356g ↗
29. Free volume profiles at polymer solid interfaces probed by focused slow positron beam10.1021/acs.macromol.5b00180 ↗