Detail of "3068-78-8"

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Interaction of silane coupling agents with CaCO3

Interaction of silane coupling agents with CaCO3. Demjen, Zoltan; Pukanszky, Bela; Foldes, Enikos; Nagy, Jozsef ( Technical University of Budapest, Budapest H-1521, Hung.). Journal of Colloid and Interface Science, 190(2), 427-436 (English) 1997 Academic. CODEN: JCISA5. ISSN: 0021-9797. DOCUMENT TYPE: Journal CA Section: 37 (Plastics Manufacture and Processing) A study of eight silane coupling agents showed very different effect of these compds. on the mech. properties of polypropylene/CaCO3 composites. The application of aminofunctional silane coupling agents resulted in the reactive coupling of the two inactive components leading to increased strength and decreased deformability. A detailed study of the interaction between CaCO3 and the various coupling agents was carried out in order to find an explanation for the strong coupling effect. The amt. of coupling agent creating a monolayer coverages was detd. by a dissoln. method for each coupling agent. The obtained values changed between 0.3 and 1.0 wt% calcd. for the CaCO3. An attempt was made to det. the orientation of the adsorbed mols. to the filler surface. Most of the coupling agents are oriented perpendicularly to the surface with the exception of a methacryl functional silane compd. Possible interactions between hydrolyzed or condensed silane coupling agents and the filler were studied by Fourier transform IR spectroscopy using transmitting and diffuse reflectance modes, as well as gel permeation chromatog. The results showed that bulky organofunctional groups form a caged, polycyclic, low-mol.-wt. structure on the surface, while silanes with smaller groups tend to condense into open, ladder type, high-mol.-wt. polysiloxane chains. Polymer/filler adhesion, however, depends primarily on the chem. character of the organofunctional group. Aminofunctional silane coupling agents adhere well to the filler surface and react also with the polymer. In the case of similar functionality the size of the organofunctional group dets. 3068-78-8 is just another one chemical used in this study. the strength of the adhesion.Some commonly used reagents like 3068-78-8 is used in this experiment. ..

Interaction of silane coupling agents with CaCO3

Interaction of silane coupling agents with CaCO3. Demjen, Zoltan; Pukanszky, Bela; Foldes, Enikos; Nagy, Jozsef ( Technical University of Budapest, Budapest H-1521, Hung.). Journal of Colloid and Interface Science, 190(2), 427-436 (English) 1997 Academic. CODEN: JCISA5. ISSN: 0021-9797. DOCUMENT TYPE: Journal CA Section: 37 (Plastics Manufacture and Processing) A study of eight silane coupling agents showed very different effect of these compds. on the mech. properties of polypropylene/CaCO3 composites. The application of aminofunctional silane coupling agents resulted in the reactive coupling of the two inactive components leading to increased strength and decreased deformability. A detailed study of the interaction between CaCO3 and the various coupling agents was carried out in order to find an explanation for the strong coupling effect. The amt. of coupling agent creating a monolayer coverages was detd. by a dissoln. method for each coupling agent. The obtained values changed between 0.3 and 1.0 wt% calcd. for the CaCO3. An attempt was made to det. the orientation of the adsorbed mols. to the filler surface. Most of the coupling agents are oriented perpendicularly to the surface with the exception of a methacryl functional silane compd. Possible interactions between hydrolyzed or condensed silane coupling agents and the filler were studied by Fourier transform IR spectroscopy using transmitting and diffuse reflectance modes, as well as gel permeation chromatog. The results showed that bulky organofunctional groups form a caged, polycyclic, low-mol.-wt. structure on the surface, while silanes with smaller groups tend to condense into open, ladder type, high-mol.-wt. polysiloxane chains. Polymer/filler adhesion, however, depends primarily on the chem. character of the organofunctional group. Aminofunctional silane coupling agents adhere well to the filler surface and react also with the polymer. In the case of similar functionality the size of the organofunctional group dets. 3068-78-8 is just another one chemical used in this study. the strength of the adhesion.Some commonly used reagents like 3068-78-8 is used in this experiment. ..