Effect of polyphenylene sulfide containing amino unit on thermal and mechanical properties of polyphenylene sulfide/glass fiber composites

ABSTRACT Three kinds of high‐molecular‐weight compatibilizers [copoly(1,4‐phenylene sulfide)‐poly(2,5‐phenylene sulfide amine)] (PPS‐NH2) containing different proportions of amino units in the side chain) were synthesized by the reaction of dihalogenated monomer and sodium sulfide via nucleophilic s...

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Bibliographic Details
Published in:Journal of applied polymer science 2018-02, Vol.135 (6), p.n/a
Main Authors: Ren, Hao‐Hao, Xu, Dong‐Xia, Yu, Ting, Yang, Jia‐Chao, Zhang, Gang, Wang, Xiao‐Jun, Yang, Jie
Format: Article
Language:English
Subjects:
Bend strength
Bending modulus
Chemical synthesis
Compatibility
Compatibilizers
composites
Dynamic mechanical analysis
Glass fiber reinforced plastics
Impact strength
Interfacial properties
Materials science
Mechanical properties
Modulus of elasticity
Polymers
Polyphenylene sulfides
Product design
Sodium sulfide
thermal properties
Thermodynamic properties
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Summary:ABSTRACT Three kinds of high‐molecular‐weight compatibilizers [copoly(1,4‐phenylene sulfide)‐poly(2,5‐phenylene sulfide amine)] (PPS‐NH2) 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 (Tm) of 271.3–281.0 °C and initial degradation temperature (Td) of 490.0–495.7 °C. There was an excellent physical compatibility between PPS‐NH2 and the pure industrial PPS. The results of dynamic mechanical analysis and macro‐ and micromechanical test showed that the selective compatibilizer PPS‐NH2 (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‐NH2 (1.0)/PPS/GF composite raised up to 141 MPa, 1.98 GPa, 203 MPa, and 6.15 kJ/m2, 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/m2, respectively). © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45804.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.45804