Polyester of dimethyl 7-(N-pyrrolidinyl)-2, 7-cycloheptadiene-1,2-dicarboxylate and its lithium triflate complex
ADVANCES IN POLYMER TECHNOLOGY, cilt.21, sa.2, ss.125-131, 2002 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 21 Sayı: 2
- Basım Tarihi: 2002
- Doi Numarası: 10.1002/adv.2001
- Dergi Adı: ADVANCES IN POLYMER TECHNOLOGY
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.125-131
- Hacettepe Üniversitesi Adresli: Hayır
Özet
A new polyester, poly[ethylene 7-(N-pyrrolidinyl)-2,7-cycloheptadiene-1,2-dicarboxylate] and its lithium triflate complex have been successfully synthesized and characterized in detail. Solution studies (viscosity and electronic spectroscopy) were realized in two different solvent mixtures, dimethyl sulphoxide (DMSO)/dimethyl formamide (DMF) (1:1 v/v) and DMSO/p-chlorophenol (p-CP) (1:1 v/v). DMSO/p-CP was a better solvent mixture to obtain Li+ ion-doped polyester. FTIR spectra supported the complex formation. According to viscosimetric measurements the polymer was a low molecular weight polyester. In DTG analysis, the polymer decomposed by a multi-step process whereas two-step decomposition was observed for polymer-Li+ ion complex. The glass transition temperature of the polyester and its Li+ complex were determined as 345degreesC and 360degreesC respectively by means of DSC analysis. (C) 2002 Wiley Periodicals, Inc.