About the Institute of Chemistry, SAS People at the Institute of Chemistry, SAS Research groups at the Institute of Chemistry, SAS Research at the Institute of Chemistry, SAS Products of the Institute of Chemistry, SAS






Ivan ©IMKOVIC, PhD, DSc
Principal research scientist

M.Sc. Organic Technology, 1974, Slovak Technical University, Slovakia
Ph.D. Organic Chemistry, 1984, Institute of Chemistry, Slovak Academy of Sciences, Slovakia

Tel.: +421-2-59410289
Publications
1. A. EbringerovŠ , I. ©imkovic: Acetylation of (4-O-methyl-D-glucurono)-D-xylan. Chem. zvesti, 33, 645-655 (1979).
2. I. ©imkovic, A. EbringerovŠ : Acetolysis of (4-O-methyl-D-glucurono)-D-xylan. 2. Characterization of the the uronic acid-containing fraction of the acetolyzate. Chem. zvesti, 35, 263-269 (1981).
3. I. ©imkovic, A. EbringerovŠ : Stability of wood polysaccharides in alkaline medium. Chemickť listy, 75, 723-742 (1981).
4. I. ©imkovic, J. TiÚo, J. PlaŤek, Z. MaÚŠsek: ESR study of alkaline, oxidative degradation of saccharides. Identification of 2,5-dihydroxy-p-benosemiquinone. Carbohydr, Res., 116, 263-269 (1983).
5. I. ©imkovic, A. EbringerovŠ, J. KŲnigstein, V. MihŠlov, F. JaneŤek: Cleavage of the glycosidic bonds in methyl 9-D-cellotrioside in alkaline medium. Chem. zvesti, 38, 223-229 (1984).
6. M. Antal, A. EbringerovŠ, I. ©imkovic: New aspects in cationization of lignocellulose materials. I. Preparation of lignocellulose materials containing quarternary ammonium groups. J. Appl. Polym. Sci., 29, 637-642 (1984).
7. M. Antal, A. EbringerovŠ, I. ©imkovic: New aspects in cationization of lignocellulose materials. II. Distribution of functional groups in lignin, hemicellulose and cellulose components. J. Appl. Polym. Sci., 29, 643-650 (1984).
8. I. ©imkovic, J. TiÚo, J. PlaŤek, Z. MaÚŠsek: Semiquinons formed during alkaline, oxidative degradation of saccharides. Carbohydr. Res., 142, 127-131 (1985).
9. I. ©imkovic, M. Antal, K. Balog, ©. KoĻŪk, J. PlaŤek: Thermooxidation of TMAHP-cellulose in dependence to its anionic form. Thermochim. Acta, 93, 421-424 (1985).
10. I. ©imkovic, M. Antal, V. MihŠlov, J. KŲnigstein, M. M. Micko: Influence of anopnic form on thermal degradation of TMAHP-cellulose. J. Appl. Polym. Sci., 30, 4707-4711 (1985).
11. I. ©imkovic, M. Antal, K. Balog, ©. KoĻŪk, J. PlaŤek: Influence of anionic form on thermooxidation of TMAHP-cellulose. J. Appl. Polym. Sci., 30, 4713-4721.
12. I. ©imkovic, A. EbringerovŠ, J. Ti2o, J. Pla2ek, Z. Ma2Šsek, L. 1ilka: ESR study of soda waste liquors, Holzforschung, 40, 15-18 (1986).
13. I. ©imkovic: Free radicals in wood chemistry. J. Macromol. Sci. - Rev. Macromol. Chem. Phys., C26, 67-80 (1986).
14. I. ©imkovic, M. ŌurindovŠ, V. MihŠlov, J. KŲnigstein, P. AmbroviŤ: Thermal degradation of cellulose model compounds in inert atmosphere. J. Appl. Polym. Sci., 31, 2433-2441 (1986).
15. A. EbringerovŠ, M. Antal, I. ©imkovic, M. M. Micko: New aspects in cationization of lignocellulose materials. III. Influence of delignification on reactivity and extractability of TMAHP-hemicelluloses. J. Appl. Polym. Sci., 31, 303-308 (1986).
16. M. Antal, I. ©imkovic, A. EbringerovŠ, M. M. Micko: New aspects in cationization of lignocellulose materials. IV. Modification of aspen wood meal with quarternary ammonium groups. J. Appl. Polym. Sci., 31, 621-625 (1986).
17. I. ©imkovic, A. EbringerovŠ, J. Hirsch, J. KŲnigstein: Alkaline degradation of model compounds related to (4-O-methyl-D-glucurono)-D-xylan. Carbohydr. Res., 152, 131-136 (1986).
18. I. ©imkovic, J. AlfŲldi, M. MatulovŠ: A 13C-NMR study of the alkaline degradation products of polysaccharides. Carbohydr. Res., 152, 137-141 (1986).
19. I. ©imkovic, A. EbringerovŠ, J. Hirsch, J. KŲnigstein: Thermal degradation of model compounds with blocked hemiacetal groups related to (4-O-methyl-D-glucurono)-D-xylan. J. Appl. Polym. Sci., 33, 1473-1477 (1987).
20. I. ©imkovic, A. EbringerovŠ, M. Antal, M. M. Micko: New aspects in cationization of lignocellulose materials. V. Modification of rotten aspen wood meal with quaternary ammonium groups. J. Appl. Polym. Sci., 33, 1955-1961 (1987).
21. I. ©imkovic, A. EbringerovŠ, M. Antal, M. M. Micko: New aspects in cationizatrion of lignocellulose materials. VI. Modification of steam-exploded aspen wood chips with quaternary ammonium groups. J. Appl. Polym. Sci., 34, 1779-1783 (1987).
22. I. ©imkovic, J. MlynŠr, J. AlfŲldi, M. Antal: New aspects in cationization of lignocellulose materials. VII. Modification of spruce wood meal with quarternaty ammonium groups. J. Appl. Polym. Sci., 33, 2651-2656 (1987).
23. I. ©imkovic, J. AlfŲldi, M. Antal: New aspects in cationization of lignocellulose materials. VIII. Modification of immited spruce wood with quarternary ammonium groups. J. Appl. Polym. Sci., 34, 2063-2068 (1987).
24. I. ©imkovic, J. Pastżr, M. Antal, K. Balog, ©. KoĻŪk, J. PlaŤek: New aspects in cationization of lignocellulose materials. IX. Flame retardancy effect of modification with nitrogen and sulphur containing groups. J. Appl. Polym. Sci., 34, 1057-1061 (1987).
25. I. ©imkovic, G. Varhegyi, M. J. Antal, Jr., A. EbringerovŠ, T. Szekely, P. Szabo: Thermogravimetric/mass spectrometric characterization of the thermal decomposition of (4-O-methyl-D-glucurono)-D-xylan. J. Appl. Polym. Sci., 36, 721-728 (1988).
26. I. ©imkovic, M. Antal, K. CsomorovŠ, M. M. Micko: New aspects in cationization of lignocellulose materials. X. Thermooxidation of TMAHP- sawdust. J. Appl. Polym. Sci., 38, 1913-1917 (1989).
27. I. ©imkovic, J. AlfŲldi: Acetylation of (4-O-methyl-D-glucurono)-D-xylan under homogeneous conditions using trifluoroacetic acid - acetic anhydride. Carbohydr. Res., 201, 346-348 (1990).
28. I. ©imkovic, J. MlynŠr, J. AlfŲldi, M. M. Micko: New aspects in cationiyation of lignocellulose materials. XI. Modification of bagasse with quarternary ammonium groups. Holzforschung, 44, 113-116 (1990).
29. I. ©imkovic, D. LiĻkovŠ, M. KoĻŪk, I. ©pilda: For a better utilization of phytomass in the future. Speculat. Sci. Technol., 13, 217-223 (1990).
30. I. ©imkovic, J. Pastżr, K. CsomorovŠ , K. Balog, M. M. Micko: Flame retardancy effect of crosslinking of lignocellulose materials. J. Appl. Polym. Sci., 41, 1333-1337 (1990).
31. I. ©imkovic, P. PelikŠn, J. Pla2ek: Enolate semiquinones formed during alkaline, oxidative degradation of 2-deoxy-sugars. Carbohydr. Res., 212, 273-276 (1991).
32. I. ©imkovic, J. MlynŠr, J. AlfŲldi, H. LŁbke, M. M. Micko: Increased extractibility of irradiated wood meal. Holzforschung, 45, 229-232 (1991).
33. I. ©imkovic, K. Balog, M. M. Micko: Flame retardancy effect of elemental sulphur caused by covering the lignocellulose materials. Holzforschung, 45, 367-370 (1991).
34. I. ©imkovic, B. Plage, H.-R. Schulten: Pyrolysis-field ionization mass spectrometry of modified bagasse fractions. Biomass Bioenergy, 1, 329-337 (1991).
35. I. ©imkovic, J. MlynŠr, J. AlfŲldi: Modofication of corn cob meal with quaternary ammonium groups. Carbohydr. Polym., 17, 285-288 (1992).
36. I. ©imkovic, J. AlfŲldi, H.-R. Schulten: Effect of pretreatment on pyrolysis-field ionization mass spectrometric data of (4-O-methyl-D-glucurono)-D-xylan from beech wood. Biomass Bioenergy, 4, 373-378 (1993).
37. I. ©imkovic, M. Antal, J. AlfŲldi: Fractionation of wheat straw meal after pretreatment with acidified zinc chloride solution. Carbohydr. Polym., 23, 111-114 (1994).
38. I. ©imkovic, K. CsomorovŠ, K. Balog: Thermal degradation and thermooxidation of O-acetyl-(4-O-methyl-D-glucurono)-D-xylan and related derivatives. Holzforschung, 49, 512-516 (1995).
39. I. ©imkovic, J. Alf2ldi, O. AuxtovŠ, D. LiĻkovŠ, P. Lerouge: Chemical modification and fractionation of pea stem polysaccharides. Carbohydr. Polym., 29, 51-56 (1996).
40. I. ©imkovic, J. A. Laszlo, A. R. Thompson: Preparation of weakly basic ion exchanger by crosslinking starch with epichlorohydrin in the presence of NH4OH. Carbohydr. Polym., 30, 25-30 (1996).
41. J. A. Laszlo, I. ©imkovic: Chemical strategies for producing anion exchangers from lignocellulosic residues to be used for removing textile dyes from wastewater. In "Ion exchange developments and applications", Proceedings of IEX '96, p. 128-134, Ed. J. A. Greig, SCI, England, 1996.
42. I. ©imkovic: One-step quaternization/crosslinking of starch with 3-chloro-2-hydroxypropyltrimethylammonium chloride/epichlorohydrin in the presence of NH4OH. Carbohydr. Polym., 31, 47-51 (1996).
43. I. ©imkovic: One-step introduction of amine and ammonium groups and croslinking of polygalacturonic acid. Carbohydr. Polym., 32, 1-6 (1997).
44. I. ©imkovic, J. A. Laszlo: Preparation of ion exchangers from bagasse by crosslinking with epichlorohydrin-NH4OH or epichlorohydrin-imidazole. J. Appl. Polym. Sci., 64, 2561-2566(1997).
45. I. ©imkovic: Quaternization/crosslinking of starch with choline chloride/ epichlorohydrin. Carbohydr. Polym., 34, 21-23 (1997).
46. I. ©imkovic, B. A. Francis, J. B. Reeves: Pyrolysis-gas chromatography mass spectrometry analysis of starch-based ion-exchangers. J. Anal. Appl. Pyrolysis, 43, 145-155 (1997).
47. I. ©imkovic, K. CsomorovŠ: Flame-retardant prperties of ion-exchanging groups introduced into beech sawdust. Fire Mat., 22, 149-154 (1998).
48. I. ©imkovic: Preparaion of anion exchangers from beech sawdust and wheat straw. Industrial Crops and Products, 10, 167-173 (1999).
49. J. B. Reeves, III, C. M. Zapf, S. R. Delwich, I. ©imkovic: Mid-infrared versus near-infrared spectroscopy for quanitative and qualitative analysis of agricultural products. Recent Res. Devel. Agricultural & Food Chem., 3, 201-222 (1999).
50. I. ©imkovic, M. HricovŪni, L. ©oltťs, R. Mendichi, C. Cosentino: Preparation of water-soluble/insoluble derivatives of hyaluronic acid by cross-linking with epichlorohydrin in aqueous NaOH/NH4OH soluion. Carbohydr. Polym., 41, 9-14 (2000).
51. I. ©imkovic, E. Jakab: Thermogravimetry/mass spectrometry study of weakly basic starch-based ion exchanger. Carbohydr. Polym., 45, 53-59 (2001).
52. I. ©imkovic, M. HricovŪni, V. SasinkovŠ: Preparation of ion-exchangers by cross-linking of starch or polygalacturonic acid with 1,3-bis(3-chloro-2-hydroxypropyl)imidazolium Hydrogen sulfate. Carbohydr. Polym., 47, 131-136 (2002).
53. I. ©imkovic, K. CsoomorovŠ: Thermogravimetric study of starch derivatives with amne/ammonium ion-exchanging groups in oxidative environment, Carbohdr. Polym. 49, 509-513 (2002).
Institute of Chemistry
Slovak Academy of Sciences
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2017