BERSHTEIN, V. A., V. M. EGOROV, P. N. YAKUSHEV, L. DAVID, Petr SYSEL, Vladimír ŠINDELÁŘ and P. PISSIS. Poly(imide-amide)-poly(ethylene adipate) hybrid networks. I. Nanostructure and segmental dynamics. Polymer. Amsterdam: Elsevier, 2002, vol. 43, No 25, p. 6943-6953. ISSN 0032-3861.
Other formats:   BibTeX LaTeX RIS
Basic information
Original name Poly(imide-amide)-poly(ethylene adipate) hybrid networks. I. Nanostructure and segmental dynamics
Name in Czech Hybridní sítě na bázi poly(imid-amid)ů-polyethyleneadipatů
Authors BERSHTEIN, V. A. (643 Russian Federation), V. M. EGOROV (643 Russian Federation), P. N. YAKUSHEV (643 Russian Federation), L. DAVID (643 Russian Federation), Petr SYSEL (203 Czech Republic), Vladimír ŠINDELÁŘ (203 Czech Republic, guarantor) and P. PISSIS (300 Greece).
Edition Polymer, Amsterdam, Elsevier, 2002, 0032-3861.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10404 Polymer science
Country of publisher Russian Federation
Confidentiality degree is not subject to a state or trade secret
Impact factor Impact factor: 1.838
RIV identification code RIV/00216224:14310/02:00031277
Organization unit Faculty of Science
UT WoS 000179075700034
Keywords in English polyimides; hybrid networks
Tags hybrid networks, polyimides
Tags International impact, Reviewed
Changed by Changed by: prof. Ing. Vladimír Šindelář, Ph.D., učo 203255. Changed: 5/2/2010 15:20.
Abstract
Segmental dynamics at 200-500 K and nanometer-scale structure were studied by SAXS, DSC and creep rate spectroscopy (CRS) techniques in two series of poly(ethylene adipate)-crosslinked poly(imide-amides) with regularly varied compn. and different lengths of PEA crosslinks (Mn=1.300 and 2.700 g mol-1). The crystn. ability was obsd. in networks with longer PEA crosslinks. Shorter PEA crosslinks induced non-cryst., nanostructured PIA-PEA networks. Combined DSC/CRS anal. indicated the pronounced heterogeneity of segmental dynamics in the latter networks. The wide dispersions of motional activation energies within the glass transitions were found by DSC, and manifestation of a few constituent segmental motions was shown in the creep rate spectra. The obsd. effects could be explained in terms of (i) the different constraining influence of PIA rigid constituents on dynamics in PEA crosslinks, and (ii) the breakdown of motional cooperativity as a result of loosening of PEA chain packing in presence of the PIA rigid nanodomains.
Abstract (in Czech)
Hybridní sítě na bázi poly(imid-amid)ů-polyethyleneadipatů byly charakterizovány pomocí metod SAXS, DSC, CRS.
PrintDisplayed: 25/7/2024 08:54