Polymer Bulletin

, Volume 54, Issue 1, pp 75–84

Rheology, Morphology and Estimation of Interfacial Tension of LDPE/EVA and HDPE/EVA Blends

Authors

    • Department of Polymer ProcessingIran Polymer and Petrochemical Institute (IPPI)
  • S.H. Jafari
    • Department of Chemical Engineering, Faculty of EngineeringUniversity of Tehran
    • Leibniz Institute of Polymer Research Dresden
  • A. Yavari
    • Department of Chemical Engineering, Faculty of EngineeringUniversity of Tehran
  • A. Asadinezhad
    • Department of Chemical Engineering, Faculty of EngineeringUniversity of Tehran
  • U. Wagenknecht
    • Leibniz Institute of Polymer Research Dresden
Article

DOI: 10.1007/s00289-005-0365-6

Cite this article as:
Khonakdar, H., Jafari, S., Yavari, A. et al. Polym. Bull. (2005) 54: 75. doi:10.1007/s00289-005-0365-6

Summary

Rheological characteristics and morphology of low-density polyethylene (LDPE) /ethylene vinyl acetate copolymer (EVA) and high-density polyethylene (HDPE)/EVA blends were compared. Morphological examinations clearly reveal a two-phase morphology in which the LDPE/EVA blends have smaller dispersed domain size than HDPE/EVA Furthermore, LDPE/EVA shows a finely interconnected morphology at 50wt% of EVA while HDPE/EVA exhibits a coarse co-continuous morphology at the same composition. The morphological observations can be attributed to the lower viscosity ratio and lower interfacial tension in the LDPE/EVA system. The Palierne model also successfully fits to the experimental data giving higher values for interfacial tension of HDPE/EVA system as compared to LDPE/EVA.

Copyright information

© Springer-Verlag 2005