Summary
Poly(1,2-butadiene) promotes crosslinking of branched polyethylene, which indeed indicates partial miscibility of the two polymers. Dynamic mechanical spectroscopy and transmission electron microscopy of blends of branched polyethylene and poly(1,2-butadiene) indicated that the polymers are partially immiscible even in the blend with only 3% of poly(1,2-butadiene). The thermal oxidative stability at temperatures above the melting point of samples stabilized with antioxidants was essentially unaffected by the percentage concentration of poly(1,2-butadiene), whereas the stability towards external partial discharges was lower in crosslinked polyethylene blends containing poly(1,2-butadiene) than in pure crosslinked polyethylene.
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References
Wallgren E, Hult A and Gedde UW (1993) Polymer 34:2585
Kato K (1966) Polymer Letter 4:35
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Wallgren, E., Hult, A., Terselius, B. et al. Miscibility assessment and thermal oxidative stability of blends of branched polyethylene and poly(1,2-butadiene). Polymer Bulletin 32, 687–692 (1994). https://doi.org/10.1007/BF00973920
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DOI: https://doi.org/10.1007/BF00973920