Journal of Scientific and Technical Research (Sharda University, Noida)

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Structural and Thermokinetic Parameters of Terpolymer Resin Derived from P-Hydroxybenzaldehyde, Urea and Ethylene Glycol


Affiliations
1 Department of Applied Chemistry, J. D. College of Engineering & Management, Nagpur, India
2 Arts, Commerce and Science College, Arvi, Dist., Wardha, India
3 Department of Chemistry, Institute of Science, R.T. Road, Nagpur, India
4 Department of Applied Chemistry, Priyadarshini College of Engineering, Nagpur, India
     

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Terpolymer abbreviated as HBUE-I was synthesized by polycondensation using monomers p-hydroxybenzaldehyde (0.1M), urea (0.1M) and ethylene glycol (0.3M) in the presence of polyphosphoric acid as catalyst at 120°C. The molecular weight was determined by non-aqueous conductometric titration. 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 170-500°C. The values of the activation energy (Ea), frequency factor (A), apparent entropy change (ΔS*) and free energy change (ΔG) were in good agreement. The order of degradation reaction determined by the FC method was confirmed by SW method.

Keywords

Polycondensation, Apparent Entropy, Free Energy, Thermal Degradation, Order of Degradation, Terpolymer.
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  • Structural and Thermokinetic Parameters of Terpolymer Resin Derived from P-Hydroxybenzaldehyde, Urea and Ethylene Glycol

Abstract Views: 246  |  PDF Views: 0

Authors

Amit N. Gupta
Department of Applied Chemistry, J. D. College of Engineering & Management, Nagpur, India
Vinay V. Hiwase
Arts, Commerce and Science College, Arvi, Dist., Wardha, India
Ashok B. Kalambe
Department of Chemistry, Institute of Science, R.T. Road, Nagpur, India
N. T. Khaty
Department of Applied Chemistry, Priyadarshini College of Engineering, Nagpur, India

Abstract


Terpolymer abbreviated as HBUE-I was synthesized by polycondensation using monomers p-hydroxybenzaldehyde (0.1M), urea (0.1M) and ethylene glycol (0.3M) in the presence of polyphosphoric acid as catalyst at 120°C. The molecular weight was determined by non-aqueous conductometric titration. 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 170-500°C. The values of the activation energy (Ea), frequency factor (A), apparent entropy change (ΔS*) and free energy change (ΔG) were in good agreement. The order of degradation reaction determined by the FC method was confirmed by SW method.

Keywords


Polycondensation, Apparent Entropy, Free Energy, Thermal Degradation, Order of Degradation, Terpolymer.