Effect of electron beam irradiation on structure, morphology, and optical properties of PVDF-HFP/PEO blend polymer electrolyte films

  • L. Yesappa
  • S. P. Ashokkumar
  • H. Vijeth
  • M. Basappa
  • Sanjeev Ganesh
  • H. DevendrappaEmail author


The effect of 8 MeV energy electron beam (EB) on poly (vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP)/polyethylene oxide (PEO) (@ w/w 90:10, PHP10) polymer blend films have been prepared and studied. The change in structure, morphology, and optical properties at 40, 80, and 120 kGy EB doses were investigated. The effect of the radiation process may responsible to occurs the degradation (chain scission) and chain link (cross linking) which are confirmed by the FT-IR analysis. The band at 1401 cm−1 corresponding to the –CH2– bending or scission mode have shifted to 1397 cm−1 after 120 kGy EB dose is due to the intermolecular interaction and the changes of the macromolecular chain by breaking of bonds with increased EB dose was observed. The XRD pattern shows decreased in the crystallinity from 60.03 to 23.42% and increased amorphousity for 120 kGy EB dose the and the surface morphology was drastically changed by decreasing the size of spherulites upon increased EB dose. The increase in optical absorption and the shifting of wavelength toward a higher end (red shift) was observed after the irradiation. The energy band gaps (Eg), and Urbach energy were estimated and they are found to be decreased, but the number of carbon atoms in a cluster of was increased with increased EB dose. The obtained results notice that the physical properties of polymer blend electrolytes can be improved by EB irradiation to use in different potential applications.


Polymer electrolyte Electron beam irradiation Structural analysis FESEM UV–visible spectroscopy 



The author acknowledged to DAE-BRNS for Sanctioning Major Research Project (Letter No. 34(1)/14/39/2014-BRNS/dated10-12-2014) and PURSE, Mangalore University Mangalore for FESEM Facility and Department of Physics, Mangalore University Mangalore for providing XRD facility.


  1. 1.
    Xiang M, Jiang M, Zhang Y, Wu C (1997) Intermacromolecular complexation due to specific interactions. Macromolecules 30:5339–5344CrossRefGoogle Scholar
  2. 2.
    Ajit S (2001) Irradiation of polymer blends containing a polyolefin. Radiat Phys Chem 60:453–459CrossRefGoogle Scholar
  3. 3.
    Maziad NA, Hassan MM (2007) Study of some properties of waste LDPE/waste butyl rubber blends using different compatibilizing agents and gamma irradiation. J Appl Polym Sci 106:4157–4163CrossRefGoogle Scholar
  4. 4.
    Dalai S, Wenxiu C (2002) Radiation effects on LDPE/EVA blends. J Appl Polym Sci 86:1296–1302CrossRefGoogle Scholar
  5. 5.
    Raghu S, Archana K, Sharanappa C, Ganesh S, Devendrappa H (2016) Electron beam and gamma ray irradiated polymer electrolyte films: dielectric properties. J Radiat Res Appl Sci 9:117–124CrossRefGoogle Scholar
  6. 6.
    Raghu S, Subramanya K, Ganesh S, Devendrappa H (2013) Electron beam induced modifications in conductivity and dielectric property of polymer electrolyte film. Radiat Meas 53–54:56–64CrossRefGoogle Scholar
  7. 7.
    Karuppanan P, Mohanty S, Nayak SK (2015) Improved electrochemical and photovoltaic performance of dye sensitized solar cell based on PEO/PVDF-HFP/silane modified TiO2 electrolytes and MWCNT/Nafion® counter electrode. RSC Adv. CrossRefGoogle Scholar
  8. 8.
    Das S, Ghosh A (2017) Charge carrier relaxation in different plasticized PEO/PVDF-HFP blend solid polymer electrolytes. J Phys Chem B 121:5422–5432CrossRefPubMedGoogle Scholar
  9. 9.
    Virk HS, Chandi PS, Srivastava AK (2001) Physical and chemical response of 70 MeV carbon ion irradiated Kapton-H polymer. Bull Mater Sci 24(5):529–534CrossRefGoogle Scholar
  10. 10.
    Subramanya K, Manjunatha V, Raghu S, Ambika Prasad MVN, Devendrappa H (2011) Effect of 8 MeV electron irradiation on the optical properties of doped polymer electrolyte films. J Phys D Appl Phys 44:105403CrossRefGoogle Scholar
  11. 11.
    Lakshmi GBVS, Ali V, Siddiqui AM, Kulriyac PK, Zulfequar M (2009) Structural, optical and electrical properties of 60 MeV C5 + ion-irradiated poly(3-methylthiophene) films. Radiat Eff Defects Solids 164:162–169CrossRefGoogle Scholar
  12. 12.
    Yesappa L, Niranjana M, Ashokkumar SP, Vijeth H, Basappa M, Jishnu D, Petwal VC, Ganesh S, Devendrappa H (2018) Optical properties and ionic conductivity studies of an 8 MeV electron beam irradiated poly(vinylidene fluoride-co-hexafluoropropylene)/LiClO4 electrolyte film for opto-electronic applications. RSC Adv 8:15297–15309CrossRefGoogle Scholar

Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  • L. Yesappa
    • 1
  • S. P. Ashokkumar
    • 1
  • H. Vijeth
    • 1
  • M. Basappa
    • 1
  • Sanjeev Ganesh
    • 1
  • H. Devendrappa
    • 1
    Email author
  1. 1.Department of PhysicsMangalore UniversityMangalagangothriIndia

Personalised recommendations