I
Ivo Křivka
Researcher at Charles University in Prague
Publications - 30
Citations - 814
Ivo Křivka is an academic researcher from Charles University in Prague. The author has contributed to research in topics: Polyaniline & Polypyrrole. The author has an hindex of 12, co-authored 27 publications receiving 716 citations.
Papers
More filters
Journal ArticleDOI
Polyaniline Dispersions. 6.† Stabilization by Colloidal Silica Particles
Jaroslav Stejskal,Pavel Kratochvíl,Steven P. Armes,Stuart F. Lascelles,Andrea Riede,Martin Helmstedt,Jan Prokeš,Ivo Křivka +7 more
TL;DR: In this article, aniline was polymerized in the presence of ultrafine colloidal silica particles (hydrodynamic diameter 35 nm) in aqueous media and, given a sufficient silica concentration, colloidally stable polyaniline−silica particles were obtained.
Journal ArticleDOI
Solid-State Protonation and Electrical Conductivity of Polyaniline
TL;DR: In this paper, a polyaniline base was protonated by blending with camphorsulfonic and picric acids in the solid state, and the electrical conductivities of the equimolar mixture was more than 107 times higher compared with the conductivity of components used for blending.
Journal ArticleDOI
Aniline-phenylenediamine copolymers
TL;DR: In this article, the electrical conductivity of polyaniline copolymerization of aniline with various phenylenediamines was investigated and the dependence of the conductivity on the composition of reaction mixture was investigated.
Journal ArticleDOI
Polyaniline-coated silica gel
Jaroslav Stejskal,Otakar Quadrat,Irina Sapurina,Josef Zemek,Alicja Drelinkiewicz,Magdalena Hasik,Ivo Křivka,Jan Prokeš +7 more
TL;DR: In this paper, the surface composition of coated microspheres was characterized by X-ray photoelectron spectroscopy, and potential applications of particles in electrorheology, organic catalysis, and in modeling of conductivity behavior in composites were demonstrated.
Journal ArticleDOI
Conductivity of colloidal polyaniline dispersions
TL;DR: The conductivity of polyaniline dispersions stabilized in aqueous medium with poly(N-vinylpyrrolidone) is related to the prediction for the model system composed of conducting spheres dispersed in a continuous medium.