Synthesis and characterization of polyimides prepared from optically active (R,R) and (S,S)-1,3-bis(p-N,N?-dimethylaminobenzyl)-perhydrobenzimidazol- 2-thion
Küçük Resim Yok
Tarih
2007
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
This paper presents the synthesis and characterization of polyimides containing a chiral (R,R) or (S,S) 1,3-bis(p ? N,N?-dimethylaminobenzyl)- perhydrobenzimidazol-2-thion unit in the backbone. The reactions occur between equimolar amounts of a dianhydride and an aromatic dimethylamine in the presence of the solvent N-methyl-2-pyrollidone (NMP). In this work, the chiral monomer RR and SS -1,3-bis(p ? N,N?-dimethylaminobenzyl)-perhydrobenzimidazol-2- thion were used as diamines. The polyimides obtained were characterized by thermogravimetry (TGA), differential thermal analysis (DTA), differential scanning calorimeter (DSC), infrared spectroscopy (FT-IR), and gel permeation chromatography (GPC). It was found that the composition of the polymer had a significant effect upon the thermal behavior of the material. © TÜBİTAK.
Açıklama
Anahtar Kelimeler
Dianhydride, Optically active polymers, Polyimides, Thermally stable polymers
Kaynak
Turkish Journal of Chemistry
WoS Q Değeri
Scopus Q Değeri
Q3
Cilt
31
Sayı
2
