Facile synthesis of processable semiaromatic polyamides containing thioether units / Gang Zhang in Industrial & engineering chemistry research, Vol. 50 N° 11 (Juin 2011)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 50 N° 11 (Juin 2011) . - pp. 7056-7064 Titre : Facile synthesis of processable semiaromatic polyamides containing thioether units Type de document : texte imprimé Auteurs : Gang Zhang, Auteur ; Guang - Shun Huang, Auteur ; Dong - Sheng Li, Auteur Année de publication : 2011 Article en page(s) : pp. 7056-7064 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Semiaromatic polyamides Résumé : Semiaromatic polyamides containing thioether units were synthesized through the reaction of 4,4'-thiodibenzoyl chloride (TDC) and diamine by the method of interfacial polycondensation. The inherent viscosities of the resultant polyamides prepared with optimum synthesis conditions were 1.08―1.26 dL/g. These polyamides had excellent thermal properties with glass transition temperatures (Tg) of 119.8-190.1 °C, melting temperatures (Tm) of 281.4―355.5 °C, and initial degradation temperatures (Td) of 433.5―466 °C. They had wider processing windows than traditional semiaromatic polyamides. At the same time, they had better tensile strengths of 62.1―86.5 MPa, better low-temperature mechanical properties, lower water absorption, lower dielectric constants of 3.16―3.81 at 100 kHz, and better melt flowability properties. The results suggest that these semiaromatic polyamides containing thioether units [poly(hexanelene 4,4'-thiodibenzoamide) (PA-6), poly(octanelene 4,4'-thiodibenzoamide) (PA-8), and poly(decanelene 4,4'-thiodibenzoamide) (PA-10)] represent a promising type of heat-resistant and processable engineering plastic. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24199924 [article] Facile synthesis of processable semiaromatic polyamides containing thioether units [texte imprimé] / Gang Zhang, Auteur ; Guang - Shun Huang, Auteur ; Dong - Sheng Li, Auteur . - 2011 . - pp. 7056-7064. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 11 (Juin 2011) . - pp. 7056-7064 Mots-clés : Semiaromatic polyamides Résumé : Semiaromatic polyamides containing thioether units were synthesized through the reaction of 4,4'-thiodibenzoyl chloride (TDC) and diamine by the method of interfacial polycondensation. The inherent viscosities of the resultant polyamides prepared with optimum synthesis conditions were 1.08―1.26 dL/g. These polyamides had excellent thermal properties with glass transition temperatures (Tg) of 119.8-190.1 °C, melting temperatures (Tm) of 281.4―355.5 °C, and initial degradation temperatures (Td) of 433.5―466 °C. They had wider processing windows than traditional semiaromatic polyamides. At the same time, they had better tensile strengths of 62.1―86.5 MPa, better low-temperature mechanical properties, lower water absorption, lower dielectric constants of 3.16―3.81 at 100 kHz, and better melt flowability properties. The results suggest that these semiaromatic polyamides containing thioether units [poly(hexanelene 4,4'-thiodibenzoamide) (PA-6), poly(octanelene 4,4'-thiodibenzoamide) (PA-8), and poly(decanelene 4,4'-thiodibenzoamide) (PA-10)] represent a promising type of heat-resistant and processable engineering plastic. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24199924

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