Journal of Materials Science

, Volume 41, Issue 18, pp 5857–5861 | Cite as

Morphological, crystallization and plasticization studies on isomorphic blends of poly (vinyl fluoride) (PVF) and poly (vinylidene difluoride) (PVDF): using microhardness, XRD and SEM techniques

  • A. K. Gupta
  • R. BajpaiEmail author
  • J. M. Keller
Original Paper


Property modification by blending of polymers has been the area of immense interest. In this paper, the isomorphic blends of two polymers poly (vinyl fluoride) (PVF) and poly (vinylidene difluoride) (PVDF) with different ratios were prepared using solution cast technique. The microhardness studies have been carried out on pure and polyblend specimens at various loads to test the plasticization and hardening effects using Vickers microhardness testing. The X-ray diffraction (XRD) study has been utilized to detect the crystalline and amorphous characteristics of specimens. Thus PVDF acts as plasticizer in the polyblend when the content of PVDF is relatively high as compare to PVF. When the PVF is major component in the polyblend, the microhardness of the blend specimen increases and the isomorphic blend specimens with 50:50 proportion of two polymers exhibit the maximum value of microhardness. Scanning electron microscopy (SEM) micrographs indicate complete chain formation with uniform texture, when the two polymers are blended in equal proportions. The findings of XRD and SEM have been correlated with the microhardness values.


PVDF Polymer Blend Scan Electron Microscopy Study Crystallinity Index Crystalline Peak 



Authors are thankful to Inter University Consortium for DAE (Department of Atomic Energy facilities) Indore, M.P., for providing X-Ray Diffraction and Scanning Electron Microscopy (SEM) facilities.


  1. 1.
    Natta G, Allegra G, Bassi IW, Sianesi D, Poricco G, Tonfi E (1965) J Polym Sci A 3:4263Google Scholar
  2. 2.
    Lopez J (1993) Polym Test 12:437CrossRefGoogle Scholar
  3. 3.
    Ahn SH, An JH, Lee DS, Kim SC (1994) J Polym Sci B 13:103Google Scholar
  4. 4.
    Report of the Research Briefing Panel on High Performance Polymer Composites in Research Briefings (1984) National Academy Press, Washington D.C., p 4556Google Scholar
  5. 5.
    Natta G, Allegra G, Bassi IW, Sianrsi D, Carlino G, Chielini E, Montagholi G (1969) Macromolecules 2:311CrossRefGoogle Scholar
  6. 6.
    Esther Kim, Jae Yeon Lee, Bong Shik Kim, Lhoosung Lee (1995) Bull Korean Chem Sci 16:1133Google Scholar
  7. 7.
    Mason W, Johnson PF, Warner JR (1991) J Mater Sci 26:6576CrossRefGoogle Scholar
  8. 8.
    Bajpai R, Agarwal P, Agrawal K, Datt SC (1998) J Polym Mater 15:329Google Scholar
  9. 9.
    Pandey S, Bajpai R, Datt SC (1991) Polym Test 10:111CrossRefGoogle Scholar
  10. 10.
    Jawahari J, Mreinio JC, Pastor JM (1992) J Mater Sci 27:22Google Scholar
  11. 11.
    Bajpai R, Awasthi SK (2001) Indian J Pure Appl Phys 39:795Google Scholar
  12. 12.
    Mishra V, Agrawal P, Datt SC (2002) Bull Mater Sci 25(1):21CrossRefGoogle Scholar
  13. 13.
    Bajpai R, Dhagat NB, Katare R, Agarawal P, Datt SC (2003) Bull Mater Sci 26(4):101CrossRefGoogle Scholar
  14. 14.
    Fava RA (ed) (1980) Methods of experimental physics polymers part B: crystal structure and morphology, vol 16. Academic Press, New York, p 118Google Scholar
  15. 15.
    Bajpai R, Datt SC (1986) Indian J Pure Appl Phys 24:254Google Scholar
  16. 16.
    Gadde UlfW (1996) Polymer physics. Chapman and Hall, London, p 123Google Scholar
  17. 17.
    Rabinowetz S, Brown N (1969) J Polym Sci 5:143Google Scholar
  18. 18.
    Parrell JA, Dorris SE, Larbalestier DC (1994) Physica C231:137CrossRefGoogle Scholar
  19. 19.
    Mishra AK, Agarwal P, Bajpai R (2004) J Appl Polym Sci 92:3107CrossRefGoogle Scholar
  20. 20.
    Bajpai R, Keller JM, Datt SC (1988) Macromol Chem Sym 20/21:465CrossRefGoogle Scholar
  21. 21.
    Hermans PH, Weidinger A (1961) Macromol Chem 24:44Google Scholar
  22. 22.
    Battacharya TK, Ghosh A, Tripathi HS, Das SK, (2002) Bull Mater Sci 26(7):703CrossRefGoogle Scholar
  23. 23.
    Brown M, Ward IM (1968) J Polym Sci 6:607CrossRefGoogle Scholar
  24. 24.
    Mallu P, Siddaramaiam, Somashekar R (2000) Bull Mater Sci 23(5):413CrossRefGoogle Scholar
  25. 25.
    Sahoo B, Chattopadhyay AK, Chattopadhyay AB (2003) Bull Mater Sci 25(6):487CrossRefGoogle Scholar
  26. 26.
    Cimmino S, Martuscelli E, Silvestre C, Canetti M, De C, Seves A (1981–1995) J Polym Sci 27Google Scholar

Copyright information

© Springer Science+Business Media, LLC 2006

Authors and Affiliations

  1. 1.Department of Post Graduate Studies and Research in Physics & ElectronicsRani Durgavati UniversityJabalpurIndia

Personalised recommendations