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A compatibilizer for a blend of polysulfone with a liquid crystalline polyester
Author(s) -
Yang Hongli,
Wu Xuqin,
Li Shijin
Publication year - 1996
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.10678
Subject(s) - materials science , polysulfone , thermotropic crystal , differential scanning calorimetry , ultimate tensile strength , composite material , polyester , terephthalic acid , copolymer , polymer , polymer chemistry , liquid crystalline , physics , thermodynamics
A ternary blend of polysulfone (PSF), a thermotropic liquid crystalline polymer (TLCP), and a compatibilizer was investigated. The TLCP was composed of terephthalic acid (TPA), m‐phthalic acid (MPA), p‐acetoxybenzoic acid (Ac‐HBA), and 4,4′‐diacetoxy bisphenyl (Ac‐BP). The compatibilizer was a block copolymer of low molecular weight polysulfone and a rigid‐rod chain. Morphological investigations showed that the TLCP in the ternary system exhibited improved adhesion and dispersion in a much finer scale than in binary blends of PSF/TLCP prepared under the same processing conditions. Differential scanning calorimetry confirmed this result. Significant improvements were seen in the values of tensile modulus and strength.