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Effect of polyphenylene sulfide containing amino unit on thermal and mechanical properties of polyphenylene sulfide/glass fiber composites
Author(s) -
Ren HaoHao,
Xu DongXia,
Yu Ting,
Yang JiaChao,
Zhang Gang,
Wang XiaoJun,
Yang Jie
Publication year - 2018
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.45804
Subject(s) - materials science , sulfide , composite material , ultimate tensile strength , composite number , polymerization , sodium sulfide , dynamic mechanical analysis , polymer chemistry , polymer , organic chemistry , chemistry , metallurgy
Three kinds of high‐molecular‐weight compatibilizers [copoly(1,4‐phenylene sulfide)‐poly(2,5‐phenylene sulfide amine)] (PPS‐NH 2 ) containing different proportions of amino units in the side chain) were synthesized by the reaction of dihalogenated monomer and sodium sulfide via nucleophilic substitution polymerization under high pressure. The intrinsic viscosity of the obtained copolymers was 0.354–0.489 dL/g and they were found to have good thermal performance with melting point ( T m ) of 271.3–281.0 °C and initial degradation temperature ( T d ) of 490.0–495.7 °C. There was an excellent physical compatibility between PPS‐NH 2 and the pure industrial PPS. The results of dynamic mechanical analysis and macro‐ and micromechanical test showed that the selective compatibilizer PPS‐NH 2 (1.0) (1.0% mol aminated ratio) can improve the mechanical and interfacial properties of polyphenylene sulfide/glass fiber (PPS/GF) composite. The macro‐optimal tensile strength, Young's modulus, bending strength, and notched impact strength of 5%PPS‐NH 2 (1.0)/PPS/GF composite raised up to 141 MPa, 1.98 GPa, 203 MPa, and 6.15 kJ/m 2 , which increased 12.8%, 9.4%, 4.1%, and 13.8%, respectively, comparing with the pure PPS/GF composite (125 MPa, 1.81 GPa, 195 MPa, and 5.40 kJ/m 2 , respectively). © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135 , 45804.