Journal of Materials Science

, Volume 42, Issue 20, pp 8645–8651 | Cite as

Analysis of brittle–ductile transition of polypropylene/ethylene-octene copolymer blends by scanning electron microscopy and small angle laser light scattering

  • Xueliang Yan
  • Xinhua XuEmail author
  • Lin Zhu


Blends of polypropylene (PP)/ethylene-octene copolymer (EOC) were studied. The influences of blend composition and mixing time on phase morphology development of the blends were investigated by scanning electron microscopy (SEM) and on-line small-angle light scattering (SALS) in detail. The toughness of the PP/EOC blends was investigated over wide ranges of EOC content and determined from the impact fracture energy of the side-edge notched samples. The concept of interparticle distance (ID) and the surface-to-surface interparticle distance (τ) were introduced into this study to probe the size effect on the brittle–ductile transition (BDT) of PP/EOC blends. The results showed that ID based on the SEM photograph and the surface-to-surface interparticle distance (τ) getting from SALS have similar effects on charactering the toughness of the PP/EOC blends. But the surface-to-surface interparticle distance (τ) is more prone to character the BDT of PP/EOC blends than the ID value. On-line SALS can be applied to the research of BDT of PP/EOC blends.


Impact Strength EPDM Interparticle Distance Phase Morphology Notch Impact Strength 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



The authors gratefully acknowledge the financial support of National Natural Science Foundation of China (No. 02490220).


  1. 1.
    Huang L, Pei QW, Yuan Q (2004) Polymer 45:6427CrossRefGoogle Scholar
  2. 2.
    Jiang W, Yu DH, An LJ, Jian BZH (2004) J Polym Sci, Part B: Polym Phy 42:1433CrossRefGoogle Scholar
  3. 3.
    van der Wal A, Nijhof R, Gaymans RJ (1999) Polymer 40:6031CrossRefGoogle Scholar
  4. 4.
    Jiang W, Liu CH, Wang ZG, An LJ (1998) Polymer 39:3285CrossRefGoogle Scholar
  5. 5.
    Zhang Z, Chiu DS, Siu GG (1997) J Reinf Plast Comp 16:S603Google Scholar
  6. 6.
    Phase structure and adhesion in polymer blends: a criterion for rubber toughening (1985) Polymer 26:1855Google Scholar
  7. 7.
    Li Q, Zheng W, Qi Z, Zhu X, Choy C (1992) Sci China B 22:236Google Scholar
  8. 8.
    Bartczak Z, Argon AS, Cohen RE, Weinberg M (1999) Polymer 40:2331CrossRefGoogle Scholar
  9. 9.
    Wilson Cheung’J Y, Stein Richard S (1994) Macromolecules 27:2520CrossRefGoogle Scholar
  10. 10.
    Mewis J, Yang H, Walker LM (1998) Chem Eng Sci 53:2231CrossRefGoogle Scholar
  11. 11.
    Akpalu YA, Youyu L (2002) J Polym Sci, Part B: Polym Phys 40:2714CrossRefGoogle Scholar
  12. 12.
    Sacks MS, Bowes LE, Hiester ED, Brahmatewari PM (1998) 5th Southern Biomedical Engineering ConferenceGoogle Scholar
  13. 13.
    Zhou JM, Sheng J (1997) Polymer 38:3727CrossRefGoogle Scholar
  14. 14.
    Sun H, Sheng J (2006) Polym Plast Technol Eng 45:1175CrossRefGoogle Scholar
  15. 15.
    Da Silva ALN, Rocha MCG, Coutinho FMB, Bretas R, Scuracchio C (1997) J Appl Polym Sci 66:2005CrossRefGoogle Scholar
  16. 16.
    Da Silva ALN, Rocha MCG, Coutinho FMB, Bretas R, Scuracchio C (2002) J Appl Polym Sci 75:692CrossRefGoogle Scholar
  17. 17.
    Da Silva ALN, Rocha MCG, Coutinho FMB, Bretas RES, Farah M (2002) Polym Test 21:647CrossRefGoogle Scholar
  18. 18.
    Paul S, Kale DD (2000) J Appl Polym Sci 76:1480CrossRefGoogle Scholar
  19. 19.
    Paul S, Kale DD (2002) J Appl Polym Sci 84:665CrossRefGoogle Scholar
  20. 20.
    Yang JH, Zhang Y, Zhang YX (2003) Polymer 44:5047CrossRefGoogle Scholar
  21. 21.
    McNally T, McShane P, Nally GM, Murphy WR, Cook M, Miller A (2002) Polymer 43:3785CrossRefGoogle Scholar
  22. 22.
    Kontopoulou M, Wang W, Gopakumar TG, Cheung C (2003) Polymer 44:7495CrossRefGoogle Scholar
  23. 23.
    Debye P, Bueche AN (1949) J Appl Phys 20:518CrossRefGoogle Scholar
  24. 24.
    Crugnola AM, Deanin RD (1979) Toughness and Brittleness of Plastic [M], p 286Google Scholar

Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  1. 1.School of Materials Science & EngineeringTianjin UniversityTianjinChina

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