2015
DOI: 10.1007/s00289-015-1465-6
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Synthesis and characterization of high performance poly(thioether imide)s via aromatic nucleophilic substitution reaction of isomeric AB-type monomers

Abstract: A series of isomeric poly(thioether imide)s (PTIs) containing thioether linkages were prepared by aromatic nucleophilic substitution reaction of isomeric N-(4-mercaptophenyl)-3-chlorophthalimide and/or N-(4-mercaptophenyl)-4-chlorophthalimide. The inherent viscosities of these polymers were in the range of 0.38-0.42 dL/g. The glass transition temperature increased with increasing the content of 3-substituted phthalimide unit in the polymer backbone. The 5 % weight loss temperatures of isomeric PTIs (a-e) were … Show more

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“…As with perfluoroaryl-containing polymers, poly(aryl thioethers) are attractive materials that display excellent performance characteristics such as high thermal stability and hydrophobicity 15 . Poly(aryl thioethers) are traditionally prepared via nucleophilic aromatic substitution (S N Ar) under conditions that utilize stoichiometric amounts of base, extended reaction times, or in some cases, high temperatures 16 21 . Although these conditions have been utilized for the incorporation of perfluoroaryl-containing monomers into poly(aryl thioethers) 22 , they are not ideal, given the propensity of perfluoroarenes to undergo multiple substitutions 3 , 23 26 potentially leading to uncontrolled branching or cross-linking.…”
Section: Introductionmentioning
confidence: 99%
“…As with perfluoroaryl-containing polymers, poly(aryl thioethers) are attractive materials that display excellent performance characteristics such as high thermal stability and hydrophobicity 15 . Poly(aryl thioethers) are traditionally prepared via nucleophilic aromatic substitution (S N Ar) under conditions that utilize stoichiometric amounts of base, extended reaction times, or in some cases, high temperatures 16 21 . Although these conditions have been utilized for the incorporation of perfluoroaryl-containing monomers into poly(aryl thioethers) 22 , they are not ideal, given the propensity of perfluoroarenes to undergo multiple substitutions 3 , 23 26 potentially leading to uncontrolled branching or cross-linking.…”
Section: Introductionmentioning
confidence: 99%