Preparation and thermal characterization of poly(2-vinylpyridine) copolymers coordinated to Cr nanoparticles

Lekesiz T. O., Kayran C., HACALOĞLU J.

POLYMERS FOR ADVANCED TECHNOLOGIES, cilt.26, sa.6, ss.555-560, 2015 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 26 Sayı: 6
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1002/pat.3484
  • Dergi Adı: POLYMERS FOR ADVANCED TECHNOLOGIES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.555-560
  • Anahtar Kelimeler: polystyrene-b-(2-vinyl pyridine), polyisoprene-b-(2-vinyl pyridine), poly(2-vinyl pyridine)-b-poly(methyl methacrylate), nanoparticles, direct pyrolysis mass spectrometry, POLY(METHYL METHACRYLATE), PYROLYSIS, DEGRADATION, COMPLEXES, ARRAYS, METAL, GLASS, GOLD
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

In this study, polystyrene-block-poly(2-vinylpyridine), PS-b-P2VP, polyisoprene-block-poly(2-vinylpyridne), PI-b-P2VP and poly(methyl metacrylate)-block-poly(2-vinylpyridine), PMMA-b-P2VP, coordinated to Cr metal were synthesized and characterized by Fourier transform infrared, transmission electron microscopy and direct pyrolysis mass spectrometry techniques. Both thermal degradation mechanism and thermal stability of P2VP blocks were affected by the coordination of Cr nanoparticles to nitrogen of pyridine rings. Thermal decomposition of P2VP blocks was started by loss of pyridine units leaving an unsaturated and/or crosslinked polymer backbone that degraded at relatively high temperatures. Incorporation of Cr metal did not noticeably influence thermal behavior of PS and PI blocks. However, increase in thermal stability of PMMA block was detected and associated with inhibition of the interactions between carbonyl groups of MMA chains with nitrogen atom of pyridine ring as a consequence of coordination to metal. Copyright (c) 2015 John Wiley & Sons, Ltd.