Influence of the clay modification on the degree of dispersion and final properties of epoxy-clay nanocomposites
Rýznarová, B.; Zelenka, J.; Lednický, František; Baldrian, Josef
2006 - English The effect of four different clay surface modifiers on the degree of dispersion and final properties of epoxy-clay nanocomposites was studied. Byl studován vliv čtyř různých modifikátorů povrchu jílu na stupeň dispergace a konečné vlastnosti nanokompozitů epoxid-montmorilonit. Keywords: epoxy-clay nanocomposites; organoclay; clay surface modification Available at various institutes of the ASCR Influence of the clay modification on the degree of dispersion and final properties of epoxy-clay nanocomposites

The effect of four different clay surface modifiers on the degree of dispersion and final properties of epoxy-clay nanocomposites was studied....

Rýznarová, B.; Zelenka, J.; Lednický, František; Baldrian, Josef
Ústav makromolekulární chemie, 2006

Influence of the phase separation of active components on the solar cell performance
Podhájecká, Klára; Pfleger, Jiří
2006 - English The influence of solvent vapor treatment on organic photovoltaic cells based on .pi.-conjugated polymer poly[1-(4-trimethylsilylphenyl)-2-phenylvinylene], and a low molecular-weight compound: N,N´-di(pent-3-yl)-perylene-3,4:9,10-bis(dicarboximide) was investigated. Byl zkoumán vliv působení par organického rozpouštědla na fotovoltaické články tvořené .pi.-konjugovaným polymerem, poly[1-(4-trimethylsilylfenyl)-2-fenylvinylen]em, obsahujícím nízkomolekulární organickou příměs N,N'-di(pent-3-yl)-perylen-3,4:9,10-bis(dicarboximid)u. Keywords: organic photovoltaic devices; heterojunction; postprocessing vapor treatment Available at various institutes of the ASCR Influence of the phase separation of active components on the solar cell performance

The influence of solvent vapor treatment on organic photovoltaic cells based on .pi.-conjugated polymer poly[1-(4-trimethylsilylphenyl)-2-phenylvinylene], and a low molecular-weight compound: ...

Podhájecká, Klára; Pfleger, Jiří
Ústav makromolekulární chemie, 2006

Surface and mechanical properties of organic - inorganic nanocomposite coating films
Špírková, Milena; Bláhová, O.; Farkačová, T.; Benešová, J.
2006 - English Surface hardness of transparent colorless epoxy-based organic-inorganic nanocomposite coatings was investigated by atomic force microscopy, nanoindentation and the Persoz pendulum test. The influence of mechanical properties on the measured surface characteristics is discussed. Pomocí mikroskopie atomových sil, nanoindentace a kyvadlového testu typu Persoz byla studována povrchová tvrdost bezbarvých transparentních organicko - anorganických nanokompozitních nátěrů. Rovněž je diskutován vliv mechanických vlastností na měřené povrchové charakteristiky. Keywords: nanocomposite; coating; atomic force microscopy Available at various institutes of the ASCR Surface and mechanical properties of organic - inorganic nanocomposite coating films

Surface hardness of transparent colorless epoxy-based organic-inorganic nanocomposite coatings was investigated by atomic force microscopy, nanoindentation and the Persoz pendulum test. The influence ...

Špírková, Milena; Bláhová, O.; Farkačová, T.; Benešová, J.
Ústav makromolekulární chemie, 2006

Intercalation of esters into vanadyl phosphate
Melánová, Klára; Beneš, L.; Svoboda, Jan; Zima, Vítězslav
2006 - English Various lactones, carbonates, aliphatic esters and diesters were intercalated into vanadyl phosphate. The intercates prepared were characterized by powder XRD, thermogravimetry and infrared spectroscopy. Byly připraveny interkaláty fosforečnanu vanadylu s laktony, karbonáty, estery karboxylových kyselin a diestery dikarboxylových kyselin. Připravené sloučeniny byly charakterizovány pomocí práškové rentgenové difrakce, IČ spektroskopie a termogravimetie. Keywords: vanadyl phosphate Available at various institutes of the ASCR Intercalation of esters into vanadyl phosphate

Various lactones, carbonates, aliphatic esters and diesters were intercalated into vanadyl phosphate. The intercates prepared were characterized by powder XRD, thermogravimetry and infrared ...

Melánová, Klára; Beneš, L.; Svoboda, Jan; Zima, Vítězslav
Ústav makromolekulární chemie, 2006

Supermolecular structure and rheology of modified UHMWPE for total joint replacements
Horák, Zdeněk; Šlouf, Miroslav; Mikešová, Jana; Baldrian, Josef; Fencl, J.
2006 - English Keywords: UHMWPE; irradiation; structure Available at various institutes of the ASCR Supermolecular structure and rheology of modified UHMWPE for total joint replacements

Horák, Zdeněk; Šlouf, Miroslav; Mikešová, Jana; Baldrian, Josef; Fencl, J.
Ústav makromolekulární chemie, 2006

Photoinduced trans/cis isomerization of azobenzenealkanethiol molecules anchored to Au nanoparticles
Dammer, Ondřej; Pfleger, Jiří; Vlčková, B.; Procházka, M.; Špringer, T.; Sedláková, Zdeňka
2006 - English Photoinduced trans/cis isomerization of -[4-(4-octyloxy-phenylazo)-phenoxy]-pentane-1-thiol (ABT) attached to geld nanoparticles was investigated in Au organosol/ABT system as well as on glass slides functionalized by gold nanoparticles. Byl studován proces cis/trans izomerizace 5-[4-(4-octyloxy-phenylazo)-phenoxy]-pentane-1-thiolu navázaného na povrchu nanočástic zlata (i) dispergovaných v organosolu a (ii) sorbovaných na funkcionalizovaném povrchu skleněného substrátu. Keywords: gold nanoparticles; SERS; azobenzene-alkanethiol Available at various institutes of the ASCR Photoinduced trans/cis isomerization of azobenzenealkanethiol molecules anchored to Au nanoparticles

Photoinduced trans/cis isomerization of -[4-(4-octyloxy-phenylazo)-phenoxy]-pentane-1-thiol (ABT) attached to geld nanoparticles was investigated in Au organosol/ABT system as well as on glass slides ...

Dammer, Ondřej; Pfleger, Jiří; Vlčková, B.; Procházka, M.; Špringer, T.; Sedláková, Zdeňka
Ústav makromolekulární chemie, 2006

Polymer nanostructures for solar cell applications: Morphology-to-performance relationship
Pfleger, Jiří; Podhájecká, Klára; Vu, Q. T.
2006 - English Polymer nanocomposites were studied based on two systems: (i) a soluble derivative of polydiphenylvinylene with a nanocrystalline fraction of n-type low-molecular weight organic material N,N'-di(pent-yl)-perylene-3,4:9,10-bis(dicarboximide), and (ii) polythiophene with titanium dioxide nanoparticles, respectively. Byly studovány polymerní nanokompozity dvou typů: (i) rozpustný derivát polydifenylacetylenu s nanostrukturní krystalickou frakcí nízkomolekulárního organického materiálu N,N'-di(pent-yl)-perylen-3,4:9,10-bis(dikarboximid)u, a (ii) polythiofen obsahující nanočástice kysličníku titaničitého. Keywords: solar cells; TiO2; .pi.-conjugated polymers Available at various institutes of the ASCR Polymer nanostructures for solar cell applications: Morphology-to-performance relationship

Polymer nanocomposites were studied based on two systems: (i) a soluble derivative of polydiphenylvinylene with a nanocrystalline fraction of n-type low-molecular weight organic material ...

Pfleger, Jiří; Podhájecká, Klára; Vu, Q. T.
Ústav makromolekulární chemie, 2006

Swelling behavior of charged poly(N-isopropylmethacrylamide) and poly(N-isopropylacrylamide) networks in water/ethanol mixtures
Alenichev, I.; Sedláková, Zdeňka; Ilavský, Michal
2005 - English Swelling behavior of negatively (ionic comonomer - sodium ethacrylate) and positively (ionic comonomer - (2-crylamidoethyl)trimethylammonium chloride) charged networks of poly(N-isopropylmethacrylamide) (PIPMAm) and poly(N-isopropylacrylamide) (PIPAAm) was investigated in water/ethanol mixtures at room temperature. Strong cononsolvency effect was observed for uncharged and negatively charged gels of both systems. Bylo proměřeno botnací chování negativně a positivně nabitůých sítí na bázi poly(N-isopropylmethakrylamidu) a poly(N-isopropylakrylamidu) ve směsných rozpouštědlech voda/ethanol. U obou systémů byl nalezen výrazný kononsolvenční efekt (výrazné minimum ve stupni nabotnání na složení rozpouštědla). Keywords: swelling behavior; networks with charges; mixed solvent Available at various institutes of the ASCR Swelling behavior of charged poly(N-isopropylmethacrylamide) and poly(N-isopropylacrylamide) networks in water/ethanol mixtures

Swelling behavior of negatively (ionic comonomer - sodium ethacrylate) and positively (ionic comonomer - (2-crylamidoethyl)trimethylammonium chloride) charged networks of ...

Alenichev, I.; Sedláková, Zdeňka; Ilavský, Michal
Ústav makromolekulární chemie, 2005

Electrorheological properties of silica modified with polyaniline
Pavlínek, V.; Lengálová, A.; Sáha, P.; Quadrat, Otakar; Stejskal, Jaroslav
2005 - English Electrorheological properties of silica suspensions particles coated with polyaniline in silicone oil have been investigated. The role of the interfacial polyarization of particles is emphasized. Byly studovány elektrorheologické vlastností suspensí částic siliky pokrytých polyanilinem v silikonovém oleji. Je zdůrazněn význam mezifázové polarizace částic. Keywords: electrorheology; silica; polyaniline Available at various institutes of the ASCR Electrorheological properties of silica modified with polyaniline

Electrorheological properties of silica suspensions particles coated with polyaniline in silicone oil have been investigated. The role of the interfacial polyarization of particles is ...

Pavlínek, V.; Lengálová, A.; Sáha, P.; Quadrat, Otakar; Stejskal, Jaroslav
Ústav makromolekulární chemie, 2005

Laser-induced size reduction of gold nanoparticles
Dammer, Ondřej; Pfleger, Jiří; Šlouf, Miroslav; Vlčková, B.
2005 - English We focused on the interaction of gold nanoparticles of various mean size embedded in aqueous environment with nanosecond pulsed laser irradiation of various energy per pulse at wavelength 355 and 532 nm, respectively. We performed a sequence of in-situ surface plasmon extinction (SPE) measurements of the fragmented hydrosol as well as ex-situ TEM studies to evaluate the size distribution of resulting Au nanoparticles. It was found that laser pulses of 355 nm wavelength provide smaller nanoparticles compared with 532 nm pulses at the same absorbed energy. Práce se zabývá interakcí zlatých nanočástic různých velikostí ve vodném prostředí s vysokoenergetickými laserovými pulsy o vlnové délce 355 a 532 nm a různé energii. Fragmentované hydrosoly byly charakterizovány in-situ měřenými extinkčními spektry a transmisní elektronovou mikroskopií, která byla použita k získání distribuce velikostí fragmentovaných nanočástic. Bylo zjištěno, že laserové pulsy s vlnovou délkou 355 nm poskytují menší částice ve srovnání s 532 nm pulsy stejné absorbované energie. Keywords: Au nanoparticles; Au hydrosol; plasmon extinction Available at various institutes of the ASCR Laser-induced size reduction of gold nanoparticles

We focused on the interaction of gold nanoparticles of various mean size embedded in aqueous environment with nanosecond pulsed laser irradiation of various energy per pulse at wavelength 355 and 532 ...

Dammer, Ondřej; Pfleger, Jiří; Šlouf, Miroslav; Vlčková, B.
Ústav makromolekulární chemie, 2005