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Morphological Evolution of Polystyrene/Polyethylene Blend Induced by Strong Second Melt Penetration
Author(s) -
Zhang RuiYan,
Yang Wei,
Xia XiaoChao,
Zhu ChunXia,
He Shan,
Huang YanHao,
Liu ZhengYing,
Fu XiaoRong,
Feng JianMing,
Yang MingBo
Publication year - 2016
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.201500458
Subject(s) - materials science , polystyrene , penetration (warfare) , composite material , melt flow index , polymer , molding (decorative) , polyethylene , copolymer , operations research , engineering
Recently, a melt penetration process in which one kind of polymer melt severely penetrated by a second polymer melt is achieved in our home‐made multimelt multi‐injection molding instrument. The morphologies of polystyrene (PS)/polyethylene blends are observed to study the characteristics of melt flow during melt penetration. For comparison, the morphologies of dispersed phase in injection molded samples with only the “first” melt injection process (FIM) and only the “second” melt (SIM) are also examined. In the penetrated layer, the dispersed phases PS deforms much more in comparison to those in the molding parts by FIM and SIM processes, which can be ascribed to a larger deformation induced by the second flow via melt penetration. In the penetrating layer, the deformity degree of PS is less than those in the molding parts during SIM processes, owing to the resistance of the “first” melt.