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Buchumschlag von Synthesis and properties of copolymers of poly(ether ether sulfone)/semiaromatic polyamides (PEES/PA)
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Synthesis and properties of copolymers of poly(ether ether sulfone)/semiaromatic polyamides (PEES/PA)

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Zeitschriftentitel: Polymer Engineering & Science
Personen und Körperschaften: Li, Yan, Zhang, Gang, Wang, Xiaojun, Li, Zhi‐Min, Yang, Jie
In: Polymer Engineering & Science, 56, 2016, 1, S. 44-50
Medientyp: E-Article
Sprache: Englisch
veröffentlicht:
Wiley
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Zusammenfassung: <jats:p>Poly(ether ether sulfone) (PEES) containing semi‐aromatic polyamides with methylene units and ether linkage were synthesized through the copolymerization of m‐dihydroxybenzene, 4,4‐dichlorodiphenylsulfone (DCDPS) and 1,6‐<jats:italic>N</jats:italic>, <jats:italic>N</jats:italic>′‐bis(4‐fluorobenzamide) hexane (BFBH) by the method of nucleophilic polymerization. The inherent viscosities of the resultant different proportion of copolymers were in the range of 0.39–0.78 dL/g. These copolymers were found to have excellent thermal properties with glass transition temperatures (<jats:italic>T</jats:italic><jats:sub>g</jats:sub>) of 121–177°C, and initial degradation temperatures (<jats:italic>T</jats:italic><jats:sub>d</jats:sub>) of 417.5–432.5°C. These copolymers showed good mechanical properties with tensile strengths of 45–83 MPa, storage modulus of 1.8–2.6 GPa. The complex viscosities of pure Poly(ether ether sulfone) (PEES) was in the range of 176,000–309.8 Pas from 0.01 to 100 Hz, the complex viscosities of the copolymers decreased significantly with the increase of semi‐aromatic amide content, the copolymers of 20% decreased from 4371 to 142.4 Pas (from 0.01 to 100 Hz), and the copolymers of 70% dropped from 634.6 Pas to 55.97 Pas (from 0.01 Hz to 100 Hz). All copolymers exhibited non‐Newtonian and shear‐thinning behavior. These results suggested the resultant copolymers possess better melt flowability that is beneficial for the materials’ melt processing. POLYM. ENG. SCI., 56:44–50, 2016. © 2015 Society of Plastics Engineers</jats:p>
Umfang: 44-50
ISSN: 1548-2634
0032-3888
DOI: 10.1002/pen.24190