Synthesis of Piperazine Based Polyimide in the Presence of Ionic Liquids

Bülent ALICI; Süleyman Köytepe And Turgay SEÇKİN

Makale detayları

Synthesis of Piperazine Based Polyimide in the Presence of Ionic Liquids

Yazarlar:

Bülent ALICI | Süleyman Köytepe And Turgay SEÇKİN

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2007 Vol.31 Issue 6, pp.569-578

Belge Tipi:

Makale

Yayın Tarihi:

5/2007

Belge Dili:

Türkçe

Document ID (Org No.):

2000728581

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527

Özet:

 

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.

 

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.

Makale detayları

Synthesis of Piperazine Based Polyimide in the Presence of Ionic Liquids

Yazarlar: Bülent ALICI | Süleyman Köytepe And Turgay SEÇKİN

Yayıncı: TUBITAK

Dergi: Turkish Journal of Chemistry 2007 Vol.31 Issue 6, pp.569-578

Belge Tipi: Makale

Yayın Tarihi: 5/2007

Belge Dili: Türkçe

Document ID (Org No.): 2000728581

Sıklık: İki Aylık

eISSN: 1303-6130

pISSN: 1300-0527

Sayı

Yazarlar:

Bülent ALICI | Süleyman Köytepe And Turgay SEÇKİN

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2007 Vol.31 Issue 6, pp.569-578

Belge Tipi:

Makale

Yayın Tarihi:

5/2007

Belge Dili:

Türkçe

Document ID (Org No.):

2000728581

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527