Colloid and Polymer Science

, Volume 269, Issue 8, pp 795–806 | Cite as

Crsslinking effect of ultrahigh molecular weight polyethylene-low molecular weight polyethylene blend films produced by gelation/crystallization from solutions

  • C. Sawatari
  • F. Ozaki
  • M. Kimura
  • T. Ogita
  • M. Matsuo
Original Contributions


Polyethylene-polyethylene blend films were prepared by gelation/crystallization from semidilute solution by using ultrahigh molecular-weight (mw) polyethylene (UHMWPE) (mw=6×106) and low molecular weight polyethylene (LMWPE) (mw=4×104). The UHMWPE/LMWPE compositions chosen were 50/50, 67/33, and 91/9. Elongation was carried out in a hot oven at 115–130°C. The drawn films were exposed to an electron beam under nitrogen flow. Radiation doses chosen were 10, 20, 40, and 100 Mrad. crosslinking caused a significant effect in improving high temperature resistance for the blend film with draw ratio of 20 in the case of irradiation doses less than 20 Mrad. The elongation beyond 20 times and high doses beyond 20 Mrad hampered the crosslinking effect and the specimens were easily torn manually. This is thought to be due to the fact that the excess irradiation dose causes main chain scission apart from crosslinking.

Key words

Polyethylene-polyethylene blend films electron beam radiation doses cross-linking high temperature resistance 


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Copyright information

© Steinkopff-Verlag 1991

Authors and Affiliations

  • C. Sawatari
    • 1
  • F. Ozaki
    • 2
  • M. Kimura
    • 1
  • T. Ogita
    • 2
  • M. Matsuo
    • 3
  1. 1.Faculty of EducationShizuoka UniversityShizuokaJapan
  2. 2.Department of Polymer Materials Engineering, Faculty of EngineeringYamagata UniversityYonezawaJapan
  3. 3.Department of Clothing Science, Faculty of Home EconomicsNara Women's UniversityNaraJapan

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