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Toughening of recycled poly(ethylene terephthalate)/glass fiber blends with ethylene–butyl acrylate–glycidyl methacrylate copolymer and maleic anhydride grafted polyethylene–octene rubber
Author(s) -
Cheng Hongyuan,
Tian Ming,
Zhang Liqun
Publication year - 2008
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.27564
Subject(s) - materials science , glycidyl methacrylate , composite material , dynamic mechanical analysis , copolymer , izod impact strength test , maleic anhydride , octene , polyethylene terephthalate , butyl acrylate , compatibilization , differential scanning calorimetry , ultimate tensile strength , polymer chemistry , acrylate , polymer blend , polymer , thermodynamics , physics
The aim of this study was to improve the toughness of recycled poly(ethylene terephthalate) (PET)/glass fiber (GF) blends through the addition of ethylene–butyl acrylate–glycidyl methacrylate copolymer (EBAGMA) and maleic anhydride grafted polyethylene–octene (POE‐ g ‐MAH) individually. The morphology and mechanical properties of the ternary blend were also examined in this study. EBAGMA was more effective in toughening recycled PET/GF blends than POE‐ g ‐MAH; this resulted from its better compatibility with PET and stronger fiber/matrix bonding, as indicated by scanning electron microscopy images. The PET/GF/EBAGMA ternary blend had improved impact strength and well‐balanced mechanical properties at a loading of 8 wt % EBAGMA. The addition of POE‐ g ‐MAH weakened the fiber/matrix bonding due to more POE‐ g ‐MAH coated on the GF, which led to weakened impact strength, tensile strength, and flexural modulus. According to dynamic rheometer testing, the use of both EBAGMA and POE‐ g ‐MAH remarkably increased the melt storage modulus and dynamic viscosity. Differential scanning calorimetry analysis showed that the addition of EBAGMA lowered the crystallization rate of the PET/GF blend, whereas POE‐ g ‐MAH increased it. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008