Investigation of curing kinetics of diglycidyl ether of bisphenol A and zinc (II) complexes using dynamic DSC technique

Khadijehbeigom Ghoreishi, Mohd. Ambar Yarmo, Nilofar Asim

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Abstract

Cure kinetics of the reaction of diglycidyl ether of bisphenol A with inorganic complexes based on zinc (II) chelate with diethylene triamine (Dien) as ligand were studied using non-isothermal differential scanning calorimetry (DSC). The complex curing agents were synthesized and characterized by elemental analysis, FT-IR, and ICP- Plasma techniques. Thermal dissociation behaviour of curing agents was also studied using thermogravimetric (TG) analysis in isolated form. The parameters of non-isothermal curing kinetics, activation energy (Ea), pre-exponential factor (A) and rate constant (K) were obtained according to Kissinger, Ozawa, and iso-conversion equations. The activation energy values for DGEBA/Zn(Dien)2Br2 and DGEBA/Zn(Dien)2(NO3)2 systems obtained by Kissinger method were 106.50 and 86.95, by Ozawa method were 108.63 and 91.12 kJ/mol and by iso-conversion equation were 107.67 and 92.66 kJ/mol, respectively. The values for pre-exponential factor (A) obtained for DGEBA/Zn(Dien)2Br2 and DGEBA/Zn(Dien)2(NO3)2 systems were 4.80 × 1011 and 4.44 × 107 s−1 with rate constants (K) of 0.90 and 0.12 s−1, respectively. The DSC thermograms of DGEBA with bromide complex showed two exothermic peaks, while DGEBA curing with nitrate complex displayed only one isolated peak.

Original languageEnglish
JournalJournal of Polymer Research
Volume22
Issue number2
DOIs
Publication statusPublished - 2015

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Curing
Zinc
Differential scanning calorimetry
Ethers
Kinetics
Rate constants
Activation energy
Inductively coupled plasma
Thermogravimetric analysis
Nitrates
Ligands
Plasmas
2,2-bis(4-glycidyloxyphenyl)propane
Bromides
Chemical analysis

Keywords

  • Curing of polymers
  • Differential scanning calorimetry (DSC)
  • Epoxy resin
  • Kinetics

ASJC Scopus subject areas

  • Materials Chemistry
  • Polymers and Plastics
  • Organic Chemistry

Cite this

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title = "Investigation of curing kinetics of diglycidyl ether of bisphenol A and zinc (II) complexes using dynamic DSC technique",
abstract = "Cure kinetics of the reaction of diglycidyl ether of bisphenol A with inorganic complexes based on zinc (II) chelate with diethylene triamine (Dien) as ligand were studied using non-isothermal differential scanning calorimetry (DSC). The complex curing agents were synthesized and characterized by elemental analysis, FT-IR, and ICP- Plasma techniques. Thermal dissociation behaviour of curing agents was also studied using thermogravimetric (TG) analysis in isolated form. The parameters of non-isothermal curing kinetics, activation energy (Ea), pre-exponential factor (A) and rate constant (K) were obtained according to Kissinger, Ozawa, and iso-conversion equations. The activation energy values for DGEBA/Zn(Dien)2Br2 and DGEBA/Zn(Dien)2(NO3)2 systems obtained by Kissinger method were 106.50 and 86.95, by Ozawa method were 108.63 and 91.12 kJ/mol and by iso-conversion equation were 107.67 and 92.66 kJ/mol, respectively. The values for pre-exponential factor (A) obtained for DGEBA/Zn(Dien)2Br2 and DGEBA/Zn(Dien)2(NO3)2 systems were 4.80 × 1011 and 4.44 × 107 s−1 with rate constants (K) of 0.90 and 0.12 s−1, respectively. The DSC thermograms of DGEBA with bromide complex showed two exothermic peaks, while DGEBA curing with nitrate complex displayed only one isolated peak.",
keywords = "Curing of polymers, Differential scanning calorimetry (DSC), Epoxy resin, Kinetics",
author = "Khadijehbeigom Ghoreishi and Yarmo, {Mohd. Ambar} and Nilofar Asim",
year = "2015",
doi = "10.1007/s10965-014-0653-7",
language = "English",
volume = "22",
journal = "Journal of Polymer Research",
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TY - JOUR

T1 - Investigation of curing kinetics of diglycidyl ether of bisphenol A and zinc (II) complexes using dynamic DSC technique

AU - Ghoreishi, Khadijehbeigom

AU - Yarmo, Mohd. Ambar

AU - Asim, Nilofar

PY - 2015

Y1 - 2015

N2 - Cure kinetics of the reaction of diglycidyl ether of bisphenol A with inorganic complexes based on zinc (II) chelate with diethylene triamine (Dien) as ligand were studied using non-isothermal differential scanning calorimetry (DSC). The complex curing agents were synthesized and characterized by elemental analysis, FT-IR, and ICP- Plasma techniques. Thermal dissociation behaviour of curing agents was also studied using thermogravimetric (TG) analysis in isolated form. The parameters of non-isothermal curing kinetics, activation energy (Ea), pre-exponential factor (A) and rate constant (K) were obtained according to Kissinger, Ozawa, and iso-conversion equations. The activation energy values for DGEBA/Zn(Dien)2Br2 and DGEBA/Zn(Dien)2(NO3)2 systems obtained by Kissinger method were 106.50 and 86.95, by Ozawa method were 108.63 and 91.12 kJ/mol and by iso-conversion equation were 107.67 and 92.66 kJ/mol, respectively. The values for pre-exponential factor (A) obtained for DGEBA/Zn(Dien)2Br2 and DGEBA/Zn(Dien)2(NO3)2 systems were 4.80 × 1011 and 4.44 × 107 s−1 with rate constants (K) of 0.90 and 0.12 s−1, respectively. The DSC thermograms of DGEBA with bromide complex showed two exothermic peaks, while DGEBA curing with nitrate complex displayed only one isolated peak.

AB - Cure kinetics of the reaction of diglycidyl ether of bisphenol A with inorganic complexes based on zinc (II) chelate with diethylene triamine (Dien) as ligand were studied using non-isothermal differential scanning calorimetry (DSC). The complex curing agents were synthesized and characterized by elemental analysis, FT-IR, and ICP- Plasma techniques. Thermal dissociation behaviour of curing agents was also studied using thermogravimetric (TG) analysis in isolated form. The parameters of non-isothermal curing kinetics, activation energy (Ea), pre-exponential factor (A) and rate constant (K) were obtained according to Kissinger, Ozawa, and iso-conversion equations. The activation energy values for DGEBA/Zn(Dien)2Br2 and DGEBA/Zn(Dien)2(NO3)2 systems obtained by Kissinger method were 106.50 and 86.95, by Ozawa method were 108.63 and 91.12 kJ/mol and by iso-conversion equation were 107.67 and 92.66 kJ/mol, respectively. The values for pre-exponential factor (A) obtained for DGEBA/Zn(Dien)2Br2 and DGEBA/Zn(Dien)2(NO3)2 systems were 4.80 × 1011 and 4.44 × 107 s−1 with rate constants (K) of 0.90 and 0.12 s−1, respectively. The DSC thermograms of DGEBA with bromide complex showed two exothermic peaks, while DGEBA curing with nitrate complex displayed only one isolated peak.

KW - Curing of polymers

KW - Differential scanning calorimetry (DSC)

KW - Epoxy resin

KW - Kinetics

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