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Šupová M, Suchý T, Chlup H, Šulc M, Kotrč T, Šilingová L, Žaloudková M, Rýglová Š, Braun M, Chvátil D, Hrdlička Z, Houška M. The electron beam irradiation of collagen in the dry and gel states: The effect of the dose and water content from the primary to the quaternary levels. Int J Biol Macromol 2023; 253:126898. [PMID: 37729990 DOI: 10.1016/j.ijbiomac.2023.126898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 09/05/2023] [Accepted: 09/12/2023] [Indexed: 09/22/2023]
Abstract
The aim of our study was to describe the impact of collagen in the gel and dry state to various doses of electron beam radiation (1, 10 and 25 kGy) which are using for food processing and sterilization. The changes in the chemical compositions (water, amino acids, lipids, glycosaminoglycans) were analyzed and the changes in the structure (triple-helix or β-sheet, the integrity of the collagen) were assessed. Subsequently, the impact of the applied doses on the mechanical properties, stability in the enzymatic environment, swelling and morphology were determined. The irradiated gels evinced enhanced degrees of cross-linking with only partial degradation. Nevertheless, an increase was observed in their stability manifested via a higher degree of resistance to the enzymatic environment, a reduction in swelling and, in terms of the mechanical behaviour, an approximation to the non-linear behavior of native tissues. In contrast, irradiation in the dry state exerted a somewhat negative impact on the observed properties and was manifested mainly via the scission of the collagen molecule and via a lower degree of stability in the aqueous and enzymatic environments. Neither the chemical composition nor the morphology was affected by irradiation.
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Affiliation(s)
- Monika Šupová
- Department of Composites and Carbon Materials, Institute of Rock Structure and Mechanics, Czech Academy of Sciences, 182 09 Prague 8, Czech Republic.
| | - Tomáš Suchý
- Department of Composites and Carbon Materials, Institute of Rock Structure and Mechanics, Czech Academy of Sciences, 182 09 Prague 8, Czech Republic; Department of Mechanics, Biomechanics and Mechatronics, Faculty of Mechanical Engineering, Czech Technical University in Prague, 166 07, Prague 6, Czech Republic
| | - Hynek Chlup
- Department of Mechanics, Biomechanics and Mechatronics, Faculty of Mechanical Engineering, Czech Technical University in Prague, 166 07, Prague 6, Czech Republic
| | - Miloslav Šulc
- Food Research Institute Prague, 102 00 Prague 10, Czech Republic
| | - Tomáš Kotrč
- Department of Mechanics, Biomechanics and Mechatronics, Faculty of Mechanical Engineering, Czech Technical University in Prague, 166 07, Prague 6, Czech Republic
| | - Lucie Šilingová
- Department of Mechanics, Biomechanics and Mechatronics, Faculty of Mechanical Engineering, Czech Technical University in Prague, 166 07, Prague 6, Czech Republic
| | - Margit Žaloudková
- Department of Composites and Carbon Materials, Institute of Rock Structure and Mechanics, Czech Academy of Sciences, 182 09 Prague 8, Czech Republic
| | - Šárka Rýglová
- Department of Composites and Carbon Materials, Institute of Rock Structure and Mechanics, Czech Academy of Sciences, 182 09 Prague 8, Czech Republic
| | - Martin Braun
- Department of Composites and Carbon Materials, Institute of Rock Structure and Mechanics, Czech Academy of Sciences, 182 09 Prague 8, Czech Republic
| | - David Chvátil
- Nuclear Physics Institute CAS, v.v.i., 250 68 Řež, Czech Republic
| | - Zdeněk Hrdlička
- Department of Polymers, University of Chemistry and Technology Prague, 166 28, Prague 6, Czech Republic
| | - Milan Houška
- Food Research Institute Prague, 102 00 Prague 10, Czech Republic
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2
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Knotek V, Ďurovič M, Dolenský B, Hrdlička Z. Influence of Disinfection Methods on Cinematographic Film. Materials (Basel) 2023; 16:ma16093493. [PMID: 37176375 PMCID: PMC10180128 DOI: 10.3390/ma16093493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 04/20/2023] [Accepted: 04/28/2023] [Indexed: 05/15/2023]
Abstract
Microbiological contamination of cinematographic films can cause damage and loss of image information. A large part of the films is made with the base of cellulose triacetate, which has been used from the 1940s until today. Cellulose triacetate is relatively resistant to common organic solvents, but some types of microorganisms can contribute to its faster degradation. In this work, we tested four types of disinfectants suitable for mass disinfection and sufficiently effective against various types of microorganisms. Butanol vapours, a commercial mixture of alcohols (Bacillol® AF), Septonex® (an aqueous solution of [1-(ethoxycarbonyl)pentadecyl] trimethylammonium bromide) and ethylene oxide applied as a gas mixed with carbon dioxide were tested. Samples of a commercial film made of cellulose triacetate were disinfected. The samples were aged for 56 days at 70 °C and 55% RH. Changes in optical, mechanical and chemical properties were studied. None of the disinfectants affected the change in the degree of substitution. For samples disinfected with Bacillol® AF (alcohol mixture), part of the plasticiser (triphenyl phosphate) was extracted and the intrinsic viscosity of the cellulose triacetate solution was reduced after ageing. A slight decrease in intrinsic viscosity also occurred after disinfection with ethylene oxide. Compared to the non-disinfected samples, butanol vapours and Septonex® appear to be the most gentle disinfectants for the cellulose triacetate film base, within the studied parameters.
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Affiliation(s)
- Vítězslav Knotek
- Department of Chemical Technology of Monument Conservation, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague, Czech Republic
| | - Michal Ďurovič
- Department of Chemical Technology of Monument Conservation, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague, Czech Republic
| | - Bohumil Dolenský
- Department of Analytical Chemistry, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague, Czech Republic
| | - Zdeněk Hrdlička
- Department of Polymers, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague, Czech Republic
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3
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Durďáková TM, Hrdlička Z, Král M, Hovorka Š, Vögele A, Eichler R, Trtik P, Vopička O. Radiation softening and hardening of PDMS in combined neutron and γ rays. Polym Degrad Stab 2022. [DOI: 10.1016/j.polymdegradstab.2022.110241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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4
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Bílková L, Bartl B, Urbánek Š, Zapletal M, Holakovská L, Ďurovič M, Hrdlička Z, Havlín J. Evaluation of Permulgin 3274 as a Material for the Conservation of Beeswax Seals. Materials (Basel) 2022; 15:ma15051909. [PMID: 35269140 PMCID: PMC8912028 DOI: 10.3390/ma15051909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 02/24/2022] [Accepted: 03/02/2022] [Indexed: 11/16/2022]
Abstract
When treating historical beeswax seals, it seems a natural choice to use materials as similar to the original as possible. The properties of analogous recent materials, however, differ from those of the aged ones, not to mention the fact that the exact composition of the particular sealing wax is usually uncertain. In order to obtain the material of desired properties, recent beeswax is often combined with various additives, including petroleum waxes, or even replaced by mixtures based solely on these products. Within this study, the relevant properties of Permulgin 3274, a ceresin-type wax, were compared with the characteristics of recent and historical beeswaxes. The aim was to evaluate its advantages and limitations, in terms of its possible use for the conservation of beeswax seals. The properties studied were comprised of the chemical composition, thermal properties, mechanical properties, possibilities of colour adjustment and ageing properties. Permulgin 3274′s workability was evaluated by conservators from the National Archives in Prague. The results indicate that, from the technological point of view, Permulgin 3274 could be considered a welcome alternative to the use of traditional conservation mixtures.
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Affiliation(s)
- Lenka Bílková
- National Archives, Archivní 2257/4, 149 00 Prague 4, Czech Republic; (L.B.); (Š.U.); (L.H.)
| | - Benjamin Bartl
- National Archives, Archivní 2257/4, 149 00 Prague 4, Czech Republic; (L.B.); (Š.U.); (L.H.)
- Correspondence:
| | - Štěpán Urbánek
- National Archives, Archivní 2257/4, 149 00 Prague 4, Czech Republic; (L.B.); (Š.U.); (L.H.)
| | - Martin Zapletal
- Department of Organic Technology, Faculty of Chemical Technology, University of Chemistry and Technology, Technická 5, 166 28 Prague 6, Czech Republic;
| | - Libuše Holakovská
- National Archives, Archivní 2257/4, 149 00 Prague 4, Czech Republic; (L.B.); (Š.U.); (L.H.)
| | - Michal Ďurovič
- Department of Chemical Technology of Monument Conservation, Faculty of Chemical Technology, University of Chemistry and Technology, Technická 5, 166 28 Prague 6, Czech Republic;
| | - Zdeněk Hrdlička
- Department of Polymers, Faculty of Chemical Technology, University of Chemistry and Technology, Technická 5, 166 28 Prague 6, Czech Republic;
| | - Jakub Havlín
- Laboratory of Thermal-Gravimetric Analysis, Faculty of Chemical Technology, University of Chemistry and Technology, Technická 5, 166 28 Prague 6, Czech Republic;
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5
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Polena J, Hrdlička Z, Hovorka Š, Švecová M, Parchaňská A, Durďáková T, Vopička O. Pervaporation of dichloromethane‐cyclopentane and methylal‐cyclopentane mixtures through membranes from chloroprene rubber. J Appl Polym Sci 2021. [DOI: 10.1002/app.51320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jan Polena
- Department of Physical Chemistry University of Chemistry and Technology Prague Czech Republic
| | - Zdeněk Hrdlička
- Department of Polymers University of Chemistry and Technology Prague Czech Republic
| | - Štěpán Hovorka
- Department of Physical Chemistry University of Chemistry and Technology Prague Czech Republic
| | - Marie Švecová
- Department of Physical Chemistry University of Chemistry and Technology Prague Czech Republic
- Department of Analytical Chemistry University of Chemistry and Technology Prague Czech Republic
| | - Alžběta Parchaňská
- Department of Physical Chemistry University of Chemistry and Technology Prague Czech Republic
| | | | - Ondřej Vopička
- Department of Physical Chemistry University of Chemistry and Technology Prague Czech Republic
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Durďáková TM, Hovorka Š, Hrdlička Z, Vopička O. Comparison of pervaporation and perstraction for the separation of p‑xylene/m‑xylene mixtures using PDMS and CTA membranes. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118986] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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7
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Regmi C, Ashtiani S, Sofer Z, Hrdlička Z, Průša F, Vopička O, Friess K. CeO 2-Blended Cellulose Triacetate Mixed-Matrix Membranes for Selective CO 2 Separation. Membranes (Basel) 2021; 11:632. [PMID: 34436395 PMCID: PMC8400081 DOI: 10.3390/membranes11080632] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 08/04/2021] [Accepted: 08/15/2021] [Indexed: 01/24/2023]
Abstract
Due to the high affinity of ceria (CeO2) towards carbon dioxide (CO2) and the high thermal and mechanical properties of cellulose triacetate (CTA) polymer, mixed-matrix CTA-CeO2 membranes were fabricated. A facile solution-casting method was used for the fabrication process. CeO2 nanoparticles at concentrations of 0.32, 0.64 and 0.9 wt.% were incorporated into the CTA matrix. The physico-chemical properties of the membranes were evaluated by SEM-EDS, XRD, FTIR, TGA, DSC and strain-stress analysis. Gas sorption and permeation affinity were evaluated using different single gases. The CTA-CeO2 (0.64) membrane matrix showed a high affinity towards CO2 sorption. Almost complete saturation of CeO2 nanoparticles with CO2 was observed, even at low pressure. Embedding CeO2 nanoparticles led to increased gas permeability compared to pristine CTA. The highest gas permeabilities were achieved with 0.64 wt.%, with a threefold increase in CO2 permeability as compared to pristine CTA membranes. Unwanted aggregation of the filler nanoparticles was observed at a 0.9 wt.% concentration of CeO2 and was reflected in decreased gas permeability compared to lower filler loadings with homogenous filler distributions. The determined gas selectivity was in the order CO2/CH4 > CO2/N2 > O2/N2 > H2/CO2 and suggests the potential of CTA-CeO2 membranes for CO2 separation in flue/biogas applications.
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Affiliation(s)
- Chhabilal Regmi
- Department of Physical Chemistry, University of Chemistry and Technology, Technická 5, 16628 Prague, Czech Republic; (S.A.); (O.V.)
| | - Saeed Ashtiani
- Department of Physical Chemistry, University of Chemistry and Technology, Technická 5, 16628 Prague, Czech Republic; (S.A.); (O.V.)
| | - Zdeněk Sofer
- Department of Inorganic Chemistry, University of Chemistry and Technology, Technická 5, 16628 Prague, Czech Republic;
| | - Zdeněk Hrdlička
- Department of Polymers, University of Chemistry and Technology, Technická 5, 16628 Prague, Czech Republic;
| | - Filip Průša
- Department of Metals and Corrosion Engineering, University of Chemistry and Technology, Technická 5, 16628 Prague, Czech Republic;
| | - Ondřej Vopička
- Department of Physical Chemistry, University of Chemistry and Technology, Technická 5, 16628 Prague, Czech Republic; (S.A.); (O.V.)
| | - Karel Friess
- Department of Physical Chemistry, University of Chemistry and Technology, Technická 5, 16628 Prague, Czech Republic; (S.A.); (O.V.)
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8
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Wilson JF, Zahradník B, Šrom O, Jaquet B, Hassouna F, Hrdlička Z, Kosek J, Šoóš M. Study of the Shear-Thinning Effect between Polymer Nanoparticle Surfaces during Shear-Induced Aggregation. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c00232] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- José Francisco Wilson
- Department of Chemical Engineering, University of Chemistry and Technology Prague, Technicka 5, 166 28 Prague 6, Czech Republic
| | - Boleslav Zahradník
- Department of Chemical Engineering, University of Chemistry and Technology Prague, Technicka 5, 166 28 Prague 6, Czech Republic
| | - Ondřej Šrom
- Department of Chemical Engineering, University of Chemistry and Technology Prague, Technicka 5, 166 28 Prague 6, Czech Republic
| | - Baptiste Jaquet
- Institute for Chemical and Bioengineering, ETH Zurich, Vladimir-Prelog-Weg 1-5/10, 8093 Zurich, Switzerland
| | - Fatima Hassouna
- Department of Computing and Control Engineering, University of Chemistry and Technology Prague, Technicka 3, 166 28 Prague 6, Czech Republic
| | - Zdeněk Hrdlička
- Department of Polymers, University of Chemistry and Technology Prague, Technicka 5, 166 28 Prague 6, Czech Republic
| | - Juraj Kosek
- Department of Chemical Engineering, University of Chemistry and Technology Prague, Technicka 5, 166 28 Prague 6, Czech Republic
| | - Miroslav Šoóš
- Department of Chemical Engineering, University of Chemistry and Technology Prague, Technicka 5, 166 28 Prague 6, Czech Republic
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9
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Kludský M, Dendisová M, Hrdlička Z, Jeništová A, Hovorka Š, Vopička O. Nafion modified with simple bases and amino acid derivatives: Survey of physical properties and search for effective pervaporation membranes. POLYM ENG SCI 2021. [DOI: 10.1002/pen.25638] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Miroslav Kludský
- Department of Physical Chemistry University of Chemistry and Technology, Prague Prague Czechia
| | - Marcela Dendisová
- Department of Physical Chemistry University of Chemistry and Technology, Prague Prague Czechia
| | - Zdeněk Hrdlička
- Department of Polymers University of Chemistry and Technology, Prague Prague Czechia
| | - Adéla Jeništová
- Department of Physical Chemistry University of Chemistry and Technology, Prague Prague Czechia
| | - Štěpán Hovorka
- Department of Physical Chemistry University of Chemistry and Technology, Prague Prague Czechia
| | - Ondřej Vopička
- Department of Physical Chemistry University of Chemistry and Technology, Prague Prague Czechia
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Zborníková E, Gallo J, Večeřová R, Bogdanová K, Kolář M, Vítovská D, Do Pham DD, Pačes O, Mojr V, Šanderová H, Ulrichová J, Galandáková A, Čadek D, Hrdlička Z, Krásný L, Rejman D. Evaluation of Second-Generation Lipophosphonoxins as Antimicrobial Additives in Bone Cement. ACS Omega 2020; 5:3165-3171. [PMID: 32118132 PMCID: PMC7045315 DOI: 10.1021/acsomega.9b03072] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 01/28/2020] [Indexed: 06/10/2023]
Abstract
Successful surgeries involving orthopedic implants depend on the avoidance of biofilm development on the implant surface during the early postoperative period. Here, we investigate the potential of novel antibacterial compounds-second-generation lipophosphonoxins (LPPOs II)-as additives to surgical bone cements. We demonstrate (i) excellent thermostability of LPPOs II, which is essential to withstand elevated temperatures during exothermic cement polymerization; (ii) unchanged tensile strength and elongation at the break properties of the composite cements containing LPPOs II compared to cements without additives; (iii) convenient elution kinetics on the order of days; and (iv) the strong antibiofilm activity of the LPPO II-loaded cements even against bacteria resistant to the medicinally utilized antibiotic, gentamicin. Thus, LPPOs II display promising potential as antimicrobial additives to surgical bone cements.
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Affiliation(s)
- Eva Zborníková
- Institute
of Organic Chemistry and Biochemistry, Czech
Academy of Sciences v.v.i., Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
- Department
of Analytical Chemistry, Faculty of Science, Charles University Prague, Hlavova 8, 128 43 Prague 2, Czech Republic
| | - Jiří Gallo
- Department
of Orthopedics, Faculty of Medicine and Dentistry, Palacký University Olomouc, I.P. Pavlova 6, 775
20 Olomouc, Czech Republic
| | - Renata Večeřová
- Department
of Microbiology, Faculty of Medicine and Dentistry, Palacký University Olomouc, Hněvotínská 3, 775 15 Olomouc, Czech Republic
| | - Kateřina Bogdanová
- Department
of Microbiology, Faculty of Medicine and Dentistry, Palacký University Olomouc, Hněvotínská 3, 775 15 Olomouc, Czech Republic
| | - Milan Kolář
- Department
of Microbiology, Faculty of Medicine and Dentistry, Palacký University Olomouc, Hněvotínská 3, 775 15 Olomouc, Czech Republic
| | - Dragana Vítovská
- Institute
of Microbiology, Czech Academy of Sciences
v.v.i., Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - Duy Dinh Do Pham
- Institute
of Organic Chemistry and Biochemistry, Czech
Academy of Sciences v.v.i., Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Ondřej Pačes
- Institute
of Organic Chemistry and Biochemistry, Czech
Academy of Sciences v.v.i., Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Viktor Mojr
- Institute
of Organic Chemistry and Biochemistry, Czech
Academy of Sciences v.v.i., Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Hana Šanderová
- Institute
of Microbiology, Czech Academy of Sciences
v.v.i., Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - Jitka Ulrichová
- Department
of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University Olomouc, Hněvotínská 3, 775 15 Olomouc, Czech Republic
| | - Adéla Galandáková
- Department
of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University Olomouc, Hněvotínská 3, 775 15 Olomouc, Czech Republic
| | - Drahomír Čadek
- Department
of Polymers, University of Chemistry and
Technology Prague, Technická 5, Dejvice, 166 28 Praha 6, Czech Republic
| | - Zdeněk Hrdlička
- Department
of Polymers, University of Chemistry and
Technology Prague, Technická 5, Dejvice, 166 28 Praha 6, Czech Republic
| | - Libor Krásný
- Institute
of Microbiology, Czech Academy of Sciences
v.v.i., Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - Dominik Rejman
- Institute
of Organic Chemistry and Biochemistry, Czech
Academy of Sciences v.v.i., Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
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11
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Durďáková TM, Hrdlička Z, Dendisová M, Švecová M, Vopička O. Swelling and plasticization of PDMS and PTMSP in methanol and dimethyl carbonate vapors and liquids: Volume, mechanical properties, Raman spectra. POLYMER 2020. [DOI: 10.1016/j.polymer.2019.122140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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12
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Hassouna F, Korbelářová J, Jaquet B, Kutorglo EM, Kopecký D, Ulbrich P, Fulem M, Hrdlička Z, Šoóš M. An environmentally benign methodology to elaborating polymer nanocomposites with tunable properties using core-shell nanoparticles and cellulose nanocrystals. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.05.054] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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13
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Michalec R, Mikula P, Sedláková L, Chalupa B, Zelenka J, Petržílka V, Hrdlička Z. Effects of thickness-shear vibrations on neutron diffraction by quartz single crystals. J Appl Crystallogr 1975. [DOI: 10.1107/s0021889875010667] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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14
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Beránek I, Hrdlička Z. Physikalisches Modell zum Studium der Pulsströmung im arteriellen Flußbett. Basic Res Cardiol 1972. [DOI: 10.1007/bf02123141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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