Reach Us +44-1904-929220

Abstract

Thermokinetic parameters of terpolymer resin-II derived from p-hydroxybenzaldehyde, urea and ethylene glycol

Terpolymer abbreviated as HBUE-II was synthesized by polycondensation using monomers p-hydroxybenzaldehyde (0.2M), urea (0.1M) and ethylene glycol (0.4M) in the presence of polyphosphoric acid as catalyst at 120oC. Terpolymer was characterized by elemental analysis, FT-IR, 1H NMR and UV-Visible spectra. Thermokinetic parameters were calculated by using Freeman-Carroll (FC) and Sharp-Wentworth (SW) methods in the temperature range 270°C – 625°C. The values of the activation energy (Ea), frequency factor (A), apparent entropy change (ΔS) and free energy changes (ΔG) were in good agreement. The order of degradation reaction determined by the FC method was confirmed by SW method


Author(s): Amit N. Gupta

Abstract | PDF

Share this  Facebook  Twitter  LinkedIn  Google+
Flyer image

Abstracted/Indexed in

  • Chemical Abstracts Service (CAS)
  • Index Copernicus
  • Google Scholar
  • Genamics JournalSeek
  • China National Knowledge Infrastructure (CNKI)
  • CiteFactor
  • Electronic Journals Library
  • Directory of Research Journal Indexing (DRJI)
  • WorldCat
  • Proquest Summons
  • Publons
  • Serials Union Catalogue (SUNCAT)
  • Geneva Foundation for Medical Education and Research
  • Secret Search Engine Labs