Number of found documents: 381
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Double layer humidity sensor based on phthalocyanine derivatives
Rakušan, J.; Karásková, M.; Hamáček, A.; Řeboun, J.; Kubáč, L.; Černý, J.; Rais, David; Nešpůrek, Stanislav
2011 - English
New type of humidity sensors based on double layer structure consisting of hydrophilic and hydrophobic phthalocyanine derivatives is presented. The sensor shows high sensitivity in the range from 20 to 90 % relative humidity (RH), good long-time stability and fast response. The impedance change vs. RH is quasi-linear in semilogarithmic plot and fully reversible. Keywords: humidity sensor; phthalocyanines; double layer structure Fulltext is available at external website.
Double layer humidity sensor based on phthalocyanine derivatives

New type of humidity sensors based on double layer structure consisting of hydrophilic and hydrophobic phthalocyanine derivatives is presented. The sensor shows high sensitivity in the range from 20 ...

Rakušan, J.; Karásková, M.; Hamáček, A.; Řeboun, J.; Kubáč, L.; Černý, J.; Rais, David; Nešpůrek, Stanislav
Ústav makromolekulární chemie, 2011

Swelling and mechanical properties of particulate composites with matrix in rubbery state
Dušek, Karel; Dušková-Smrčková, Miroslava; Šomvársky, J.; Nezbedová, E.; Náhlík, Luboš
2011 - English
Keywords: swelling; mechanical properties Available at various institutes of the ASCR
Swelling and mechanical properties of particulate composites with matrix in rubbery state

Dušek, Karel; Dušková-Smrčková, Miroslava; Šomvársky, J.; Nezbedová, E.; Náhlík, Luboš
Ústav makromolekulární chemie, 2011

Wheat B-starch based polymeric materials
Kotek, Jiří; Kruliš, Zdeněk; Šárka, E.
2011 - English
The contribution is aimed at preparation of a thermoplastic material derived from the wheat B-starch. Two ways have been followed, namely blending of the starch with poly(ε-caprolactone) (PCL) and plasticizing of the starch. In both cases, properties of the materials based on the B-starch are comparable to analogous materials based on the A-starch. The prepared materials have potential application as biodegradable films for agriculture. Keywords: biodegradable plastic; polycaprolactone; B-starch Available at various institutes of the ASCR
Wheat B-starch based polymeric materials

The contribution is aimed at preparation of a thermoplastic material derived from the wheat B-starch. Two ways have been followed, namely blending of the starch with poly(ε-caprolactone) (PCL) and ...

Kotek, Jiří; Kruliš, Zdeněk; Šárka, E.
Ústav makromolekulární chemie, 2011

Hybrid structures based on montmorillonite/modified starch intercalate
Duchek, P.; Špírková, Milena
2010 - English
Intercalates based on several commercial cationized starches with degree of substitution D=0.04-0.17, and sodium montmorillonite were prepared. The XRD analyses of resulting organic/inorganic hybrids proved that modification in the starch structure leads to embedding the polycation into montmorillonite clay gallery. Lower degree of starch cationization results in bigger enlargement of the interlayer space in the hybrid structure. Keywords: organic/inorganic hybrides; montmorillonite Available at various institutes of the ASCR
Hybrid structures based on montmorillonite/modified starch intercalate

Intercalates based on several commercial cationized starches with degree of substitution D=0.04-0.17, and sodium montmorillonite were prepared. The XRD analyses of resulting organic/inorganic hybrids ...

Duchek, P.; Špírková, Milena
Ústav makromolekulární chemie, 2010

Vliv struktury materiálu na chemickou recyklaci polyurethanu při mikrovlnném ohřevu
Prokop, Jiří; Beneš, Hynek; Kruliš, Zdeněk; Mikešová, Jana; Kříž, Jaroslav
2010 - Czech
Keywords: microwave heating; glycolysis; recycling Available at various institutes of the ASCR
Vliv struktury materiálu na chemickou recyklaci polyurethanu při mikrovlnném ohřevu

Prokop, Jiří; Beneš, Hynek; Kruliš, Zdeněk; Mikešová, Jana; Kříž, Jaroslav
Ústav makromolekulární chemie, 2010

Humidity sensor based on TiO2 nanoparticles and sodium salt of sulfonated AlOH phthalocyanine
Rakušan, J.; Karásková, M.; Hamáček, A.; Řeboun, J.; Rais, David; Nešpůrek, Stanislav
2010 - English
New type of humidity sensor based on TiO2 nanoparticles and sodium salt of sulfonated AlOH phthalocyanine is presented. The sensor shows high sensitivity due to the high surface area of TiO2 nanoparticles, good long-time stability and sensitivity in the range from 20 to 80 % RH. The response is linear in semilogarithmic plot – logarithm of impedance vs. RH and fully reversible. Keywords: humidity sensor; TiO2; phthalocyanines Fulltext is available at external website.
Humidity sensor based on TiO2 nanoparticles and sodium salt of sulfonated AlOH phthalocyanine

New type of humidity sensor based on TiO2 nanoparticles and sodium salt of sulfonated AlOH phthalocyanine is presented. The sensor shows high sensitivity due to the high surface area of TiO2 ...

Rakušan, J.; Karásková, M.; Hamáček, A.; Řeboun, J.; Rais, David; Nešpůrek, Stanislav
Ústav makromolekulární chemie, 2010

Novel nanocomposite materials for power engineering
Boček, J.; Matějka, Libor; Mentlík, V.
2010 - English
The epoxy-POSS nanocomposites were prepared and their electrical/dielectric and thermomechanical properties were determined. The mono- and octa-epoxyfunctionalized POSS (POSS,E1 and POSS,E8) were covalently incorporated in the epoxy network matrix DGEBA- 3,3’-dimethyl-4,4’-diaminocyclohexylmethane (Laromin C260) as pendant units or as polyhedral junctions, respectively. While the POSS junctions are well dispersed in the hybrid network DGEBA-Laromin-POSS,E8, the pendant POSS aggregate to form large crystalline POSS domains. Keywords: nanocomposite; epoxy resin; insulating system Available at various institutes of the ASCR
Novel nanocomposite materials for power engineering

The epoxy-POSS nanocomposites were prepared and their electrical/dielectric and thermomechanical properties were determined. The mono- and octa-epoxyfunctionalized POSS (POSS,E1 and POSS,E8) were ...

Boček, J.; Matějka, Libor; Mentlík, V.
Ústav makromolekulární chemie, 2010

Nízkoenergetický způsob recyklace polyurethanového odpadu
Beneš, Hynek; Kruliš, Zdeněk; Hájek, Milan; Holler, Petr; Látalová, Petra; Prokop, Jiří
2010 - Czech
Keywords: polyurethane waste; recycling; microwave Available at various institutes of the ASCR
Nízkoenergetický způsob recyklace polyurethanového odpadu

Beneš, Hynek; Kruliš, Zdeněk; Hájek, Milan; Holler, Petr; Látalová, Petra; Prokop, Jiří
Ústav makromolekulární chemie, 2010

Cation and anion exchangers from nanofibrous polystyrene for fast water treatment
Marek, J.; Beneš, Milan J.; Jelínek, L.
2009 - English
Strongly acidic sulfonovaný cation exchanger on polystyrene nanofibrous matrix (Nanospider TM technology) was prepared by simultaneous sulfonation and crosslinking. Weakly basic nanofibrous anion exchanger was prepared after transformation of sulfogroups to sulfochloride by reaction with ethylene diamine. Nanofibrous products were characterized by sorption capacity. They have sorption kinetic significantly faster in comparison with standard granular ion exchangers. Současnou sulfonací a síťováním byl připraven silně kyselý sulfonový katex na polystyrenové nanovláknité matrici (Nanospider TM technologie). Slabě bázický anex byl připraven po převedení sulfoskupin na sulfochlorid reakci s ethylen diaminem. Nanovláknité produkty byly charakterizovány pomocí sorpční kapacity. Mají kinetiku sorpce výrazně rychlejší než standardní sorbenty granulární. Keywords: polystyrene; nanofiber; ion exchanger Available at various institutes of the ASCR
Cation and anion exchangers from nanofibrous polystyrene for fast water treatment

Strongly acidic sulfonovaný cation exchanger on polystyrene nanofibrous matrix (Nanospider TM technology) was prepared by simultaneous sulfonation and crosslinking. Weakly basic nanofibrous anion ...

Marek, J.; Beneš, Milan J.; Jelínek, L.
Ústav makromolekulární chemie, 2009

Self-assembled nanostructures in copolymer blends: SAXS, SANS and TEM study
Holoubek, Jaroslav; Baldrian, Josef; Hromádková, Jiřina; Steinhart, Miloš
2009 - English
Phenomena associated with the phase behaviour and self-assembled nanostructures of three block copolymer systems have been studied by small-angle X-ray scattering (SAXS), small-angle neutron scattering (SANS) and transmision electron microscopy (TEM) Keywords: total hip replacement; polyethylene wear; aseptic loosening Available at various institutes of the ASCR
Self-assembled nanostructures in copolymer blends: SAXS, SANS and TEM study

Phenomena associated with the phase behaviour and self-assembled nanostructures of three block copolymer systems have been studied by small-angle X-ray scattering (SAXS), small-angle neutron ...

Holoubek, Jaroslav; Baldrian, Josef; Hromádková, Jiřina; Steinhart, Miloš
Ústav makromolekulární chemie, 2009

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