Investigation of pyrrole end capped polytetrahydrofuran graft copolymers via mass spectrometry

Özdilek, Ceren


Investigation of thermal characteristics of naphthoxazines and polynaphthoxazines via pyrolysis mass spectrometry
Koyuncu, Zeynep; Hacaloğlu, Jale; Department of Chemistry (2009)
In this study, polymerization mechanisms of aromatic (C6H5 or C6F5) and alkyl (CH3, C2H5, C3H7, C6H13, C12H25 or C18H37) amine based naphthoxazine monomers (15-Na, 15Na-C1, 15Na-C2, 15Na-C3, 15Na-C6, 15Na-C12 and 15Na-C18) and thermal degradation mechanisms of polynaphthoxazines synthesized by curing the naphthoxazine monomers (P-15-Na, P-15NaF, P-15Na-C1, P-15Na-C2, P-15Na-C3, P-15Na-C6, P-15Na-C12 and P-15Na-C18) were studied by direct pyrolysis mass spectrometry. During the curing process, the evolutions...
Investigation of polymerization of benzoxazines and thermal degradation characteristics of polybenzoxazines via direct pyrolysis mass spectrometry
Fam, Shahla Bagheri; Uyar, Tamer; Ishida, Hatsuo; Hacaloğlu, Jale (2012-10-01)
Polymerization of benzoxazines and thermal degradation mechanisms of polybenzoxazines were investigated using the direct pyrolysis mass spectrometry (DP-MS) technique. The benzoxazine structures were based on phenol and aniline and on bisphenol-A and methylamine or aniline. Polymerizations of the benzoxazines were carried out by curing them at elevated temperatures without addition of initiator or catalyst. DP-MS data showed the presence of chains generated by opposing polymerization reaction pathways indic...
Investigation of thermal degradation characteristics of polyamide-6 containing melamine or melamine cyanurate via direct pyrolysis mass spectrometry
Isbasar, Ceyda; Hacaloğlu, Jale (2012-01-01)
In this work the changes in thermal degradation characteristics of polyamide 6 (PA6) in the presence of melamine (Me) or melamine cyanurate (MC) were investigated systematically via direct pyrolysis mass spectrometry. Though thermal stability of PA6 was not affected by the presence of flame retardants, the changes in the products and in their distributions were detected. The reaction of carbonyl groups of PA6 with amine groups of melamine was the main cause for the changes in the product distribution. In th...
Investigation of copolymers of thiophene-functionalized polystyrene with pyrrole by pyrolysis mass spectrometry
Papila, Ozge; Toppare, Levent Kamil; Hacaloğlu, Jale (2006-06-01)
The thermal and structural characterization of electrochemically synthesized thiophene-functionalized polystyrene and pyrrole (PS/PPy) and their copolymers were investigated by direct pyrolysis mass spectrometry. The pyrolysis data confirmed the growth of polypyrrole onto the pendant thiophene moiety of polystyrene. It is determined that the electrolytic film has different properties from the mechanical mixture and the related homopolymers.
Investigation of thermal characteristics of a series polyoxazolines by direct pyrolysis mass spectrometry
Atılkan, Nurcan; Hacaloğlu, Jale; Toppare, Levent Kamil; Department of Polymer Science and Technology (2011)
In the latest years, many studies especially on characterization and synthesis of polyoxazolines have been made. During these studies, new polyoxazolines such as poly(2-isopropyl-2-oxazoline) (PIPOX), poly(2-(3-butenyl)-2-oxazoline) (PBOX) and modified PBOX were synthesized. However, there has been no investigation on their thermal characteristics such as thermal stability and thermal degradation products. In this study, thermal degradation characteristics, thermal degradation products and thermal stability...
Citation Formats
C. Özdilek, “Investigation of pyrrole end capped polytetrahydrofuran graft copolymers via mass spectrometry,” Middle East Technical University, 2001.