Abstract
Calcium carbonates of different degrees of surface hydrophobicity were obtained when sorbic acid or polyoxyethylene glycol were present during the precipitation. In the presence of trace amounts of divalent cations carbonates with high surface hydrophilicity and improved monodisperse character are obtained. Surface modification of the calcium carbonates by several proadhesive compounds can markedly improve the chemical affinity of the carbonates to polymers. Very effective are isostearoyl titanate and two polyoxyethylene compounds. Precipitated calcium carbonates modified with 2 to 3 percent (wt/wt) of isostearoyl titanate increased the tensile strenght of butadiene-styrene rubber by approximately 100%. Polyurethane is only strengthened when 30 wt/wt of a filler are introduced independently of the type proadhesive compounds. The best strength and hysteresis of polyurethanes are obtained with calcium carbonate modified with 2 percent (wt/wt) of polyoxyethylene glycol.
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References
Lee LH (1968) Colloid Interf Sci 27:751
Krysztafkiewicz A (1989) Chemia Stosowana 33:561
Kisielew AW (1968) J Colloid Interf Sci 28:430
Ferh H (1976) Chem Ing Techn 48:922
Krysztafkiewicz A, Domka L (1987) Tenside 24:227
Plueddemann WP (1974) Interfaces in polymer composites. Academie Press, N York
Plueddemann EP (1982) Silane Compling Agents. Plenum Press, N York
Monte SJ, Sugerman W, Titanate coupling agents in filler reinforced thermosets. 33 rd Ann Tech Conf 1978, Reinforced Plastics (Composites Institute)
Kessaissia Z, Papirer JB (1981) J Colloid Interf Sci 82:526
Domka LJ, Mater Sci (submitted for publication)
Toropow NA, Bulak LN (1972) Kristalografija i mineralogija. Stroizdat, Leningrad
India norm IZN-1958 (1961)
Domka L, Krysztafkiewicz A, Krysztafkiewicz W (1982) Pat PRL 119358
Zielenkiewicz W, Kurek T (1966) Przemysł Chemiczny 45:247
Krysztafkiewicz A, Wieczorek W, Domka L (1981) Polimery 26:175
Domka L (1981) Przemysł Chemiczny 60:22
Seollenberger CS, Hewitt LP (1978) Polym Prepr 19:17
Krysztafkiewicz A, Maik M (1987) Colloid Polym Sci 265:704
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Domka, L. Surface modified precipitated calcium carbonates at a high degree of dispersion. Colloid Polym Sci 271, 1091–1099 (1993). https://doi.org/10.1007/BF00659299
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DOI: https://doi.org/10.1007/BF00659299