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  • 1 Maria Curie-Skłodowska University Faculty of Chemistry, Department of Polymer Chemistry and Technology Lublin Poland 20-614 Gliniana 33 street
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Abstract  

In this paper, the non-isothermal differential scanning calorimetry (DSC) was employed to investigate the cure process and to determine the kinetic parameters of the curing reaction of the unsaturated polyester resin catalyzed with promoter-cobalt(II)octoate and free-radical initiators. The initiators were formed by the oxidation process of acetylacetone with 60% hydrogen peroxide in the presence of the catalyst-sulphuric acid and the solvents: propano-1,2-diol or the mixture of propano-1,2-diol and hydroxypolyether TG 500. As a reference, the typical curing system containing ethyl methyl ketone hydroperoxide (Luperox) and promoter was used. It was found that the cure process of the unsaturated polyester resin with the new initiators/cobalt(II)octoate was described through lower maximum peak temperatures (Tmax) and lower values of the total heat of the curing reaction (ΔHR) in comparison with Luperox/cobalt(II)octoate. The computed values of activation energies were in the range of 40.8–44.9 and 80.4–87.6 kJ mol–1 for unsaturated polyester resin cured with the new initiators/cobalt(II)octoate. The values of activation energies were little lower or comparable to those obtained when Luperox/cobalt(II)octoate system was used (45.8 and 82.3 kJ mol–1).

Manuscript Submission: HERE

  • Impact Factor (2019): 2.731
  • Scimago Journal Rank (2019): 0.415
  • SJR Hirsch-Index (2019): 87
  • SJR Quartile Score (2019): Q3 Condensed Matter Physics
  • SJR Quartile Score (2019): Q3 Physical and Theoretical Chemistry
  • Impact Factor (2018): 2.471
  • Scimago Journal Rank (2018): 0.634
  • SJR Hirsch-Index (2018): 78
  • SJR Quartile Score (2018): Q2 Condensed Matter Physics
  • SJR Quartile Score (2018): Q2 Physical and Theoretical Chemistry

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
4
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)