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Morphology of polyethylene blends: 1. From spheres to fibrils and extended co-continuous phases in blends of polyethylene with styrene-isoprene-styrene triblock copolymers

par David, Christiane ;Trojan, Michèle ;Jacobs, Robert;Piens, Marcel
Référence Polymer, 32, 3, page (510-515)
Publication Publié, 1991

Article révisé par les pairs

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Résumé :

Blends containing 85% polyethylene (LDPE/LLDPE) and 15% styrene-isoprene-styrene triblock copolymers have been obtained using a single screw extruder fitted with different exit dies (annular, flat and capillary). The morphology of the blends has been investigated by scanning electron microscopy and related to the extrusion conditions (type of die, presence or absence of melt drawing). Spheres, elongated droplets, fibrils and extended co-continuous phases have been observed. © 1991.