Synthesis, Characterization and Optimum Reaction Conditions of Oligo-N-Salicylidenephenylhydrazone via Oxidative Polymerization

FEYZA KOLCU

doi:https://doi.org/10.18596/jotcsa.374150

Article Details

Synthesis, Characterization and Optimum Reaction Conditions of Oligo-N-Salicylidenephenylhydrazone via Oxidative Polymerization

Authors:

FEYZA KOLCU

Publisher:

Turkish Chemical Society

Main Topics:

Chemical engineering

Journal:

Journal of the Turkish Chemical Society Section A: Chemistry 2018 Vol.5 Issue 2, pp.919-930

Document Type:

Article

Publication Date:

12/2017

Document Language:

English

Document ID (Org No.):

2000503270

Frequency:

Quarterly

eISSN:

2149-0120

DOI:

https://doi.org/10.18596/jotcsa.374150

Abstract:

 


The oxidative polycondensation reaction conditions and
optimum parameters of N-salicylidenephenylhydrazone (SPH) were determined using
air, H2O2 and NaOCl as oxidants at a temperature range
between 50 °C and 95 °C in an aqueous alkaline medium. The molecular structures
of the obtained monomer and oligomer were confirmed by FT-IR, UV-Vis, 1H-NMR and elemental analyses. The
characterization was fulfilled by TG-DTA, size exclusion chromatography (SEC)
and solubility tests. The conversion of N-salicylidenephenylhydrazone into oligomer
was performed using air, H2O2 and NaOCl as oxidants in an
aqueous alkaline medium. According to SEC analysis, the number-average
molecular weight (Mn), weight-average molecular weight (Mw)
and polydispersity index (PDI) values of oligo-N-salicylidenephenylhydrazone
(OSPH) obtained using NaOCl oxidant were found to be 1436 g mol-1, 1631 g mol-1
and 1.14, respectively. The conversion yield of N-salicylidenephenylhydrazone
into oligo-N-salicylidenephenylhydrazone was 100% at optimum reaction
conditions such as [SPH]0 = [KOH]0 = [H2O2]0
=0.06, mol/L and at 90 °C for 10 h. Also, according to TG-DTA analysis,
oligo-N-salicylidenephenylhydrazone was shown to be thermally stable and
resistant to thermo-oxidative decomposition. The weight loss of OSPH was found to be 20, 50 and 92.56% at 275°, 597°
and 1000 °C, respectively.


.

Article Details

Synthesis, Characterization and Optimum Reaction Conditions of Oligo-N-Salicylidenephenylhydrazone via Oxidative Polymerization

Authors: FEYZA KOLCU

Publisher: Turkish Chemical Society

Main Topics: Chemical engineering

Journal: Journal of the Turkish Chemical Society Section A: Chemistry 2018 Vol.5 Issue 2, pp.919-930

Document Type: Article

Publication Date: 12/2017

Document Language: English

Document ID (Org No.): 2000503270

Frequency: Quarterly

eISSN: 2149-0120

DOI: https://doi.org/10.18596/jotcsa.374150

Issues

Authors:

FEYZA KOLCU

Publisher:

Turkish Chemical Society

Main Topics:

Chemical engineering

Journal:

Journal of the Turkish Chemical Society Section A: Chemistry 2018 Vol.5 Issue 2, pp.919-930

Document Type:

Article

Publication Date:

12/2017

Document Language:

English

Document ID (Org No.):

2000503270

Frequency:

Quarterly

eISSN:

2149-0120

DOI:

https://doi.org/10.18596/jotcsa.374150