THERMAL TRANSITIONS AND DEGRADATIVE PROCESSES IN FE(III)-TETRACARBOXYPHTHALOCYANINE-GRAFTED POLY(N-VINYLCARBAZOLE)

Citation
F. Zamora et al., THERMAL TRANSITIONS AND DEGRADATIVE PROCESSES IN FE(III)-TETRACARBOXYPHTHALOCYANINE-GRAFTED POLY(N-VINYLCARBAZOLE), Journal of macromolecular science. Physics, B37(5), 1998, pp. 601-613
Citations number
30
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Polymer Sciences
ISSN journal
0022-2348
Volume
B37
Issue
5
Year of publication
1998
Pages
601 - 613
Database
ISI
SICI code
0022-2348(1998)B37:5<601:TTADPI>2.0.ZU;2-N
Abstract
The introduction of 2,9,16,23-tetracarboxy-Fe(III)phthalocyanine [Fe(I II)tcPc] units onto fractions of poly(N-vinylcarbazole) (PVK) by Fried el-Crafts reaction leads to amorphous PVK-based grafted compounds that show major interchain distances by the wide-angle x-ray scattering (W AXS) technique. Glass transition temperatures of the products are lowe r than the main glass transition temperature of PVK and are attributed to local movements of the voluminous added groups. Dynamic thermograv imetric experiments show decarboxylation processes within the 250 degr ees C-500 degrees C range and little weight loss. The large remaining residue, up to 70% of the sample at 800 degrees C, is suggested to be the consequence of successive cross-linking reactions. The Fourier tra nsform infrared (FTIR) spectrum of the residue is similar to that of t he grafted sample before degradation.