A5075088260- Advanced Polymer Synthesis and Characterization
- Polymer composites and self-healing
- Polymer Nanocomposites and Properties
- Synthesis and properties of polymers
- Epoxy Resin Curing Processes
- Hydrogels: synthesis, properties, applications
- Photopolymerization techniques and applications
- Polymer crystallization and properties
- Surfactants and Colloidal Systems
- biodegradable polymer synthesis and properties
- Adsorption, diffusion, and thermodynamic properties of materials
- Polymer Science and PVC
- Material Dynamics and Properties
- Advanced Physical and Chemical Molecular Interactions
- Phase Equilibria and Thermodynamics
- Silicone and Siloxane Chemistry
- Inorganic and Organometallic Chemistry
- Dendrimers and Hyperbranched Polymers
- Rheology and Fluid Dynamics Studies
- Material Properties and Applications
- Asphalt Pavement Performance Evaluation
- Molecular Junctions and Nanostructures
- Thermal and Kinetic Analysis
- Complex Network Analysis Techniques
- Analytical Chemistry and Chromatography
Czech Technical University in Prague
2020-2024
Czech Academy of Sciences, Institute of Macromolecular Chemistry
2011-2021
Czech Agrifood Research Center
2007-2017
Centre of the Region Haná for Biotechnical and Agricultural Research
2017
Charles University
2003-2014
Czech Academy of Sciences
1994-2014
Czech Academy of Sciences, Institute of Biophysics
2014
University of Utah
2002-2012
University of Novi Sad
2010
Institute of Macromolecular Chemistry
1998-2007
Abstract It is predicted that the net repulsion between segments of a polymer network and poor solvent can cause phase transition marked by sudden change in degree swelling. This analogous to “coil–globule” recently Ptitsyn occur for macromolecule solution. The critical conditions transition. as well diagrams, are calculated gel free swelling under uniaxial tension, which facilitates depends on being formed chains crosslinked while greatly swollen diluent also having high crosslinking....
Abstract By using the model of a randomly coiled chain, relation is derived describing equilibrium stress–strain behavior variously ionized polyelectrolyte gels swollen in solutions uni–univalent salt. The effect concentration bound counterions calculated on basis cylindrical and change length statistical chain segment with ionization gel stress–strain, swelling, potentiometric equilibria discussed.
The present paper introduces a novel, sustainable approach to produce an eco-friendly Printed Circuit Board (PCB) substrate; substitute for traditional substrates, significantly reduce e-waste. We the prepreg technology, road actual circuit assembly with application studies, life cycle analysis (LCA), and sustainability analysis. flame-retarded prepregs resulting PCB assemblies were based on polylactic acid (PLA), structure is reinforced flax textiles. After copper lamination, subtractive...
Cloud-point curves by DSC measurements at different scanning rates on solutions of two samples poly(vinyl methyl ether) in water show minima a temperature−composition plot. The significance the data was confirmed static coexisting-phase compositions and phase-volume ratios. A thermodynamic analysis terms strongly concentration-dependent interaction parameter leads to conclusion that system H2O/PVME exhibits so-called type III behavior. For polymers infinite molar mass, such behavior is...
Polyurethane networks based on vegetable oils have very heterogeneous composition, and it is difficult to find a close correlation between their structure properties. To establish benchmark structure−properties relationships, we prepared model polyurethane triolein 4,4'-diphenylmethane diisocyanate (MDI). Cross-linking in the middle of fatty acid chains leaves significant parts triglyceride as dangling chains. examine effect properties, synthesized another network using without (removed by...
Abstract The mechanism of acid curing epoxy resins catalyzed with tertiary amines was investigated by using model systems composed phenylglycidyl ether and benzoic or acetic anhydrides in the presence benzyldimethylamine. reaction studied NMR spectrometry, liquid chromatography, ozone absorption. main findings are that (1) tert‐amine is bound chemically irreversibly during under formation a quaternary ammonium salt magnified image (2) 1‐phenyloxypropanediol‐2,3‐dibenzoate diacetate product....
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSimulation of polymer network formation by the Monte Carlo methodJosef Mikes and Karel DusekCite this: Macromolecules 1982, 15, 1, 93–99Publication Date (Print):January 1982Publication History Published online1 May 2002Published inissue 1 January 1982https://pubs.acs.org/doi/10.1021/ma00229a018https://doi.org/10.1021/ma00229a018research-articleACS PublicationsRequest reuse permissionsArticle Views534Altmetric-Citations105LEARN ABOUT THESE...
Abstract In this article, we report on the rheological properties of agarose aqueous solutions and gels. Viscosity curves were determined for homogeneous at different temperatures (from 68 to 38 °C) study viscosity behavior as systems undergo gelation. The gelation phenomenon was also investigated by shear oscillation experiments differential scanning calorimetry. melting temperature a function concentration together with enthalpies. results obtained interpreted using two‐step model...
Abstract The reaction of tetrafunctional diamines and bifunctional amines with monoepoxy compounds was investigated by gel‐permeation chromatography. At a stoichiometrically equivalent ratio the functional groups or excess amine, consecutive epoxide hydrogen atoms amino is only that taking place; if present in excess, OH formed are gradually added to groups. rate constants epoxy group primary secondary calculated from concentrations products at various amounts amines. good accord value gel...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTGraphlike State of Matter. 10. Cyclization and Concentration Elastically Active Network Chains in Polymer NetworksKarel Dušek, Manfred Gordon, Simon B. Ross-MurphyCite this: Macromolecules 1978, 11, 1, 236–245Publication Date (Print):January 1978Publication History Published online1 May 2002Published inissue 1 January 1978https://pubs.acs.org/doi/10.1021/ma60061a044https://doi.org/10.1021/ma60061a044research-articleACS PublicationsRequest reuse...
Abstract The composition of copolymers p- and m-divinylbenzene with styrene was determined by infrared spectrometry during copolymerization compared values calculated on the assumption that polymerizing system is homogeneous, reactivities both vinyl groups in monomers pendant are independent extent copolymerization. At lower conversions content all divinylbenzene units, especially copolymer, than calculated, whereas at higher a fraction does not react. gel point do depend concentration...
Abstract Phase separation during the formation of three‐dimensional polymers in presence inert diluents, by crosslinking linear polymers, or polymerization multifunctional monomers, was treated under assumption thermodynamic equilibrium using Flory theory swelling equilibria and rubber elasticity. The begins when maximum network diluent diluent‐monomer mixture drops to degree dilution network; two quantities remain equal even after phases. formed this way is a composite one. Relations have...
Abstract The curing of epoxy resins with amine agents has been statistically treated as irreversible alternating polyaddition the aid theory cascade processes for cases when polymerization groups and cyclization are negligible. coefficients vectorial generating functions obtained by solving kinetic differential equations. solution carried out reaction diepoxide diamine an independent reactivity in amino diamine, but a different hydrogen atoms primary secondary group. Relationships have...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhase Transitions in Swollen NetworksR. Moerkerke, R. Koningsveld, H. Berghmans, K. Dusek, and SolcCite this: Macromolecules 1995, 28, 4, 1103–1107Publication Date (Print):February 1, 1995Publication History Published online1 May 2002Published inissue 1 February 1995https://pubs.acs.org/doi/10.1021/ma00108a043https://doi.org/10.1021/ma00108a043research-articleACS PublicationsRequest reuse permissionsArticle Views592Altmetric-Citations117LEARN ABOUT...