Authors:
V. Šutinská Department of Chemical Technologies and Environment, Faculty of Industrial Technologies, University of Trenčín, 020 01, Púchov, Slovakia
Novácke chemické závody, a.s., 972 71, Nováky, Slovakia

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M. Pajtášová Department of Chemical Technologies and Environment, Faculty of Industrial Technologies, University of Trenčín, 020 01, Púchov, Slovakia

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D. Ondrušová Department of Chemical Technologies and Environment, Faculty of Industrial Technologies, University of Trenčín, 020 01, Púchov, Slovakia

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S. Ľalíková Department of Chemical Technologies and Environment, Faculty of Industrial Technologies, University of Trenčín, 020 01, Púchov, Slovakia

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A. Ferjancová Department of Chemical Technologies and Environment, Faculty of Industrial Technologies, University of Trenčín, 020 01, Púchov, Slovakia

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J. Paliesková Department of Chemical Technologies and Environment, Faculty of Industrial Technologies, University of Trenčín, 020 01, Púchov, Slovakia

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S. C. Mojumdar Department of Chemical Technologies and Environment, Faculty of Industrial Technologies, University of Trenčín, 020 01, Púchov, Slovakia
Department of Engineering, University of New Brunswick, Saint John, NB, E2L 4L5, Canada

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Abstract

A double metal cyano (DMC) catalyst is very effective for ring opening polymerization of propylene oxide (PO). The characteristics of the DMC complex were studied by Fourier transform infrared spectroscopy (FTIR) and thermogravimetry (TG). DMC complex generally result in a significant reduction of monols in the polyol production process. DMC catalyst is characterized by an approximately 1000 times higher activity compared to the conventional KOH catalyst. Disadvantages of the conventional KOH process are long reaction times, costly work-up procedures to remove the base catalyst and the formation of undesired unsaturated by-products (so called “monols”) especially in the preparation of long chain polyether polyols.

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  • 7. Mojumdar, SC, Raki, L. Preparation, thermal, spectral and microscopic studies of calcium silicate hydrate-poly(acrylic acid) nanocomposite materials. J Therm Anal Calorim. 2006;85:99105. .

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  • 8. Sawant, SY, Verenkar, VMS, Mojumdar, SC. Preparation, thermal, XRD, chemical and FT-IR spectral analysis of NiMn2O4 nanoparticles and respective precursor. J Therm Anal Calorim. 2007;90:669672. .

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  • 9. Porob, RA, Khan, SZ, Mojumdar, SC, Verenkar, VMS. Synthesis, TG, SDC and infrared spectral study of NiMn2(C4H4O4)3·6N2H4—a precursor for NiMn2O4 nanoparticles. J Therm Anal Calorim. 2006;86:605608. .

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  • 10. Mojumdar, SC, Varshney, KG, Agrawal, A. Hybrid fibrous ion exchange materials: past, present and future. Res J Chem Environ. 2006;10:89103.

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  • 11. Doval, M, Palou, M, Mojumdar, SC. Hydration behaviour of C2S and C2AS nanomaterials, synthesized by sol-gel method. J Therm Anal Calorim. 2006;86:595599. .

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  • 12. Tiwari, NR, Rathore, A, Prabhune, A, Kulkarni, SK. Gold nanoparticles for colorimetric detection of hydrolysis of antibiotics by penicillin G acylase. Adv Biosci Biotechnol. 2010;1:322329. .

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  • 13. Varshney, G, Agrawal, A, Mojumdar, SC. Pyridine based cerium(IV) phosphate hybrid fibrous ion exchanger: synthesis, characterization and thermal behaviour. J Therm Anal Calorim. 2007;90:731734. .

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  • 14. Mojumdar, SC, Melnik, M, Jona, E. Thermal and spectral properties of Mg(II) and Cu(II) complexes with heterocyclic N-donor ligands. J Anal Appl Pyrolysis. 2000;53:149160. .

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  • 15. Borah, B, Wood, JL. Complex hydrogen bonded cations. The benzimidazole benzimidazolium cation. Can J Chem. 1976;50:24702481. .

  • 16. Mojumdar, SC, Sain, M, Prasad, RC, Sun, L, Venart, JES. Selected thermoanalytical methods and their applications from medicine to construction. J Therm Anal Calorim. 2007;60:653662. .

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  • 17. Meenakshisundarm, SP, Parthiban, S, Madhurambal, G, Mojumdar, SC. Effect of chelating agent (1,10-phenanthroline) on potassium hydrogen phthalate crystals. J Therm Anal Calorim. 2008;94:2125. .

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  • 18. Rejitha, KS, Mathew, S. Investigations on the thermal behavior of hexaamminenickel(II) sulphate using TG-MS and TR-XRD. Glob J Anal Chem. 2010;1: 1 100108.

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  • 19. Ondrusova, D, Jona, E, Simon, P. Thermal properties of N-ethyl-N-phenyldithiocarbamates and their influence on the kinetics of cure. J Therm Anal Calorim. 2002;67:147152. .

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  • 20. Madhurambal, G, Ramasamy, P, Anbusrinivasan, P, Vasudevan, G, Kavitha, S, Mojumdar, SC. Growth and characterization studies of 2-bromo-4′-chloro-acetophenone (BCAP) crystals. J Therm Anal Calorim. 2008;94:5962. .

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  • 21. Ukraintseva, EA, Logvinenko, VA, Soldatov, DV, Chingina, TA. Thermal dissociation processes for clathrates [CuPy4(NO3)2]·2G (G=tetrahydrofurane, chloroform). J Therm Anal Calorim. 2004;75:337345. .

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  • 22. Raileanu, M, Todan, L, Crisan, M, Braileanu, A, Rusu, A, Bradu, C, Carpov, A, Zaharescu, M. Sol-gel materials with pesticide delivery properties. J Environ Protect. 2010;1:302313. .

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  • 23. Varshney, KG, Agrawal, A, Mojumdar, SC. Pectin based cerium(IV) and thorium(IV) phosphates as novel hybrid fibrous ion exchangers synthesis, characterization and thermal behaviour. J Therm Anal Calorim. 2005;81:183189. .

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  • 24. Mojumdar, SC, Šimon, P, Krutošíková, A. [1]Benzofuro[3,2-c]pyridine: synthesis and coordination reactions. J Therm Anal Calorim. 2009;96:103109. .

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  • 25. Jona, E, Rudinska, E, Sapietova, M, Pajtasova, M, Ondrusova, D, Jorik, V, Mojumdar, SC. Interaction of pyridine derivatives into the interlayer spaces of Cu(II)-montmorillonites. Res J Chem Environ. 2005;9:4143.

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  • 26. Mojumdar, SC, Miklovic, J, Krutosikova, A, Valigura, D, Stewart, JM. Furopyridines and furopyridine-Ni(II) complexes—synthesis, thermal and spectral characterization. J Therm Anal Calorim. 2005;81:211215. .

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  • 27. Vasudevan, G, AnbuSrinivasan, P, Madhurambal, G, Mojumdar, SC. Thermal analysis, effect of dopants, spectral characterisation and growth aspects of KAP crystals. J Therm Anal Calorim. 2009;96:99102. .

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  • 28. ASTM D4671, Standard test methods for polyurethanes raw materials: determination of unsaturation of polyols; 1999.

  • 29. ISO 17710. Plastics—polyols for use in the production of polyurethane—determination of degree of unsaturation by microtitration; 2002.

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  • 30. Kazuo, N. Infrared and Raman spectra of inorganic coordination compounds B2. 6 Hoboken, NJ: Wiley; 2009 110117.

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
1
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)

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