BERSHTEIN, Vladimir A., Larisa M. EGOROVA, Pavel N. YAKUSHEV, Vladimír ŠINDELÁŘ, Petr SYSEL, Tatiana E. SUKHANOVA, Irina P. DOBROVOLSKAYA, Anatoly I. GRIGORIEV, Sotiria KRIPOTOU and Polycarpos PISSIS. Poly(imide-amide)-poly(ethylene glycol) hybrid networks: nanostructure, molecular dynamics and membrane properties. Polymer Bulletin. Germany: Springer, 2007, vol. 58, No 1, p. 65-74. ISSN 0170-0839.
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Basic information
Original name Poly(imide-amide)-poly(ethylene glycol) hybrid networks: nanostructure, molecular dynamics and membrane properties
Name in Czech Hybridní sítě poly(imid-amidy)-poly(ethylen glycol):nanostruktura, molekulární dynamika a separační vlastnosti
Authors BERSHTEIN, Vladimir A. (643 Russian Federation), Larisa M. EGOROVA (643 Russian Federation), Pavel N. YAKUSHEV (643 Russian Federation), Vladimír ŠINDELÁŘ (203 Czech Republic, guarantor), Petr SYSEL (203 Czech Republic), Tatiana E. SUKHANOVA (643 Russian Federation), Irina P. DOBROVOLSKAYA (643 Russian Federation), Anatoly I. GRIGORIEV (643 Russian Federation), Sotiria KRIPOTOU (300 Greece) and Polycarpos PISSIS (300 Greece).
Edition Polymer Bulletin, Germany, Springer, 2007, 0170-0839.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10404 Polymer science
Country of publisher Czech Republic
Confidentiality degree is not subject to a state or trade secret
Impact factor Impact factor: 1.022
RIV identification code RIV/00216224:14310/07:00031977
Organization unit Faculty of Science
UT WoS 000243051200007
Keywords in English polyimides;nanostructure;molecular dynamics
Tags molecular dynamics, nanostructure, polyimides
Tags International impact, Reviewed
Changed by Changed by: prof. Ing. Vladimír Šindelář, Ph.D., učo 203255. Changed: 5/2/2010 15:20.
Abstract
Nanometer-scale structure, mol. dynamics (at 100-580 K) and membrane properties were studied in two series of poly(imide-amide) (PIA)-poly(ethylene glycol) (PEG) hybrid networks with regularly varied compn. and different lengths of PEG crosslinks (Mn= 1000 or 3400). Combined WAXD/SAXS/polarized microscopy/DSC/DRS/TSDC/creep rate spectroscopy (CRS) anal. of these hybrids was performed. Depending on their compn., semicryst. or mesomorphous, or amorphous state, and nanostructural heterogeneity were obsd. for these networks. They could be subdivided into (a) the PIA-rich hybrids with spatially isolated PEG domains, "suppressed" dynamics in the PEG glass transition, and PIA domains with Tg=520-570 K (group 1), and (b) the other hybrids with a continuous PEG phase and low-temp. glass transition only (group 2). Heterogeneity in segmental dynamics was revealed by CRS over the temp. range from TgPEG to TgPIA. In the second group of hybrids, the permeability coeffs. were higher, by 2 or 3 orders of magnitude, for org. vapors than those for air gases.
Abstract (in Czech)
Byly připraveny hybridní sítě poly(imid-amidy)-poly(ethylen glycol)s lišící se zastoupením jednotlivých složek a rozdílnou délkou PEG oligomerů (Mn= 1000 or 3400). U těchto materiálů byly studovány nanostruktura, molekulární dynamika a separační vlastnosti.
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