Synhesis of piperazine based polyimide in the presence of ionic liquids
Yükleniyor...
Dosyalar
Tarih
2007
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Turkish Journal of Chemistry
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Öz: Başlık (İngilizce): Öz (İngilizce): Ionic liquids derived from imidazolium, pyridinium, and alkylammonium salts were investigated not only as catalysts but also as solvents in polymerization of 1,4-bis(3-aminopropyl) piperazine. Results were compared with the conventional polymerizations in N-methylpyrrolidone (NMP). The catalyst has not only a detectable influence on polymer solubility, but also the degrees of polymerization are notably higher. They are even greater than the values obtained by conventional 2-stage polymerization in organic liquids. Ionic liquids based on imidazolium salts seem preferable over pyridinium and alkylammonium salts due to the higher degree of polydispersity of the polyimides obtained. The glass transition temperatures and thermal stabilities were higher for polyimide synthesized in ionic liquids than conventional polyimides prepared in aprotic solvents.
Açıklama
Anahtar Kelimeler
Mühendislik, Kimya
Kaynak
Turkish Journal of Chemistry
WoS Q Değeri
Scopus Q Değeri
Cilt
31
Sayı
6
Künye
Bülent A., Süleyman K., Turgay S. (2007). Synhesis of piperazine based polyimide in the presence of ionic liquids, Turkish Journal of Chemistry, İnönü Üniversitesi, Malatya.
