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Compatibility of poly(ethylene 2,6‐naphthalate) and poly(butylene 2,6‐naphthalate) blends
Author(s) -
Yoon Kwan Han,
Lee Sang Cheol,
Park O Ok
Publication year - 1995
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760352210
Subject(s) - materials science , miscibility , polyethylene naphthalate , composite material , ultimate tensile strength , polymer blend , modulus , glass transition , amorphous solid , izod impact strength test , ethylene , polymer , copolymer , organic chemistry , chemistry , catalysis
Blends prepared from poly(ethylene 2,6‐naphthalate) (PEN) and poly(butylene 2,6‐naphthalate) (PBN) show only partial miscibility judged from their glass transition temperatures. Two distinct mechanical behaviors are observed: brittle for the blends < 20 wt% of PBN, while ductile > 20 wt% of PBN. The experimental modulus and strength values of the blends are within the predicted values according to Kleiner and Paul models, respectively. This means that PEN/PBN blends are somewhat compatible based on their tensile properties. Especially for 20 wt% of PBN blend, the high modulus and strength are observed. The viscosity of the blend is high, which may imply a somewhat entangled morphology in the amorphous state.