TAILIEUCHUNG - Study of interfaces in polymer-metal oxide films and free-volume hole using low-energy positron lifetime measurements

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. | Journal of Science Advanced Materials and Devices 4 2019 413e419 Contents lists available at ScienceDirect Journal of Science Advanced Materials and Devices journal homepage locate jsamd Original Article Study of interfaces in polymer-metal oxide films and free-volume hole using low-energy positron lifetime measurements Aman Deep Acharya a b Bhawna Sarwan a b Ratnesh Sharma a . Shrivastava a Manoj Kumar Rathore c a Vikram University Ujjain 456010 MP India b Lovely Professional University Jalandhar Punjab India c . Council of Science and Technology Bhopal India a r t i c l e i n f o a b s t r a c t Article history To reveal how the distribution of different nano fillers affect the UV-shielding efficiency of their polymer- Received 5 February 2019 based composites and to further develop a simple strategy to refrain the erection of the composites we Received in revised form prepared ZnO doped polystyrene PS ZnO and TiO2 doped polystyrene PS TiO2 films by the solution 28 July 2019 cast technique with different concentrations of ZnO and TiO2 and 1 . . Contrary to the Accepted 10 August 2019 Available online 16 August 2019 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 Keywords Polystyrene thin films efficiency of the PS matrix. This analysis is equally supported by the PALS study where the free vol- ZnO ume was closely associated with the interfacial interaction between the filler and the PS matrix. These TiO2 observations recommend that the better dispersion of filler particles leads a stronger interfacial inter- Positron annihilation action and enhances the UV-protection efficiency of the composite materials. Free volume hole 2019 The Authors. Publishing services by Elsevier . on behalf .

• Vật lý
• Polystyrene thin films
• Positron annihilation
• Free volume hole
• Interfacial interaction
• Solution cast method