Effect of ethylene‐propylene copolymer with residual PE crystallinity on mechanical properties and morphology of PP/HDPE blends | Zendy

Zhu Wei | Zendy; Zhang Xuequan | Zendy; Feng Zhiliu | Zendy; Huang Baotong | Zendy

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Effect of ethylene‐propylene copolymer with residual PE crystallinity on mechanical properties and morphology of PP/HDPE blends

Author(s) -

Zhu Wei,

Zhang Xuequan,

Feng Zhiliu,

Huang Baotong

Publication year - 1995

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.1995.070580309

Subject(s) - high density polyethylene , crystallinity , materials science , ultimate tensile strength , polypropylene , elongation , copolymer , polyethylene , composite material , polymer blend , compatibilization , izod impact strength test , polymer chemistry , polymer

Morphology and mechanical properties of polypropylene (PP)/high density polyethylene (HDPE) blends modified by ethylene‐propylene copolymers (EPC) with residual PE crystallinity were investigated. The EPC showed different interfacial behavior in PP/HDPE blends of different compositions. A 25/75 blend of PP/HDPE (weight ratio) showed improved tensile strength and elongation at break at low EPC content (5 wt %). For the PP/HDPE = 50/50 blend, the presence of the EPC component tended to make the PP dispresed phase structure transform into a cocontinuous one, probably caused by improved viscosity matching of the two components. Both tensile strength and elongation at break were improved at EPC content of 5 wt %. For PP/HDPE 75/25 blends, the much smaller dispersed HDPE phase and significantly improved elongation at break resulted from compatibilization by EPC copolymers. © 1995 John Wiley & Sons, Inc.

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