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
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Scientific Technical Research Council Turkey-Tubitak
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'-dimetylaminobenzyl)-perhydrobenzimidazol-2-thion unit in the backbone. The reactions occur betweem equimolar amounts of a dianhydride and all 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 bu 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.
Açıklama
Anahtar Kelimeler
polimides, thermally stable polymers, dianhydride, optically active polymers
Kaynak
Turkish Journal of Chemistry
WoS Q Değeri
Q3
Scopus Q Değeri
Cilt
31
Sayı
2
