Poly(imide-amide)-poly(ethylene adipate) hybrid networks. I.
Nanostructure and segmental dynamics

J 2002

Poly(imide-amide)-poly(ethylene adipate) hybrid networks. I. Nanostructure and segmental dynamics

BERSHTEIN, V. A.; V. M. EGOROV; P. N. YAKUSHEV; L. DAVID; Petr SYSEL et al.

Základní údaje

Originální název

Poly(imide-amide)-poly(ethylene adipate) hybrid networks. I. Nanostructure and segmental dynamics

Název česky

Hybridní sítě na bázi poly(imid-amid)ů-polyethyleneadipatů

Autoři

BERSHTEIN, V. A.; V. M. EGOROV; P. N. YAKUSHEV; L. DAVID; Petr SYSEL; Vladimír ŠINDELÁŘ a P. PISSIS

Vydání

Polymer, Amsterdam, Elsevier, 2002, 0032-3861

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10404 Polymer science

Stát vydavatele

Rusko

Utajení

není předmětem státního či obchodního tajemství

Impakt faktor

Impact factor: 1.838

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/02:00031277

Organizační jednotka

Přírodovědecká fakulta

UT WoS

000179075700034

Klíčová slova anglicky

polyimides; hybrid networks

Štítky

hybrid networks, polyimides

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 5. 2. 2010 15:20, prof. Ing. Vladimír Šindelář, Ph.D.

Anotace

ORIG CZ

V originále

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.

Česky

Hybridní sítě na bázi poly(imid-amid)ů-polyethyleneadipatů byly charakterizovány pomocí metod SAXS, DSC, CRS.

Citovat

BERSHTEIN, V. A.; V. M. EGOROV; P. N. YAKUSHEV; L. DAVID; Petr SYSEL; Vladimír ŠINDELÁŘ a P. PISSIS. Poly(imide-amide)-poly(ethylene adipate) hybrid networks. I. Nanostructure and segmental dynamics. Polymer. Amsterdam: Elsevier, 2002, roč. 43, č. 25, s. 6943-6953. ISSN 0032-3861.

@article{601346,
   author = {Bershtein, V. A. and Egorov, V. M. and Yakushev, P. N. and David, L. and Sysel, Petr and Šindelář, Vladimír and Pissis, P.},
   article_location = {Amsterdam},
   article_number = {25},
   keywords = {polyimides; hybrid networks},
   language = {eng},
   issn = {0032-3861},
   journal = {Polymer},
   title = {Poly(imide-amide)-poly(ethylene adipate) hybrid networks. I. Nanostructure and segmental dynamics},
   volume = {43},
   year = {2002}
}

TY  - JOUR
ID  - 601346
AU  - Bershtein, V. A. - Egorov, V. M. - Yakushev, P. N. - David, L. - Sysel, Petr - Šindelář, Vladimír - Pissis, P.
PY  - 2002
TI  - Poly(imide-amide)-poly(ethylene adipate) hybrid networks. I. Nanostructure and segmental dynamics
JF  - Polymer
VL  - 43
IS  - 25
SP  - 6943-6953
EP  - 6943-6953
PB  - Elsevier
SN  - 00323861
KW  - polyimides
KW  - hybrid networks
N2  - 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.
ER  -

BERSHTEIN, V. A.; V. M. EGOROV; P. N. YAKUSHEV; L. DAVID; Petr SYSEL; Vladimír ŠINDELÁŘ a P. PISSIS. Poly(imide-amide)-poly(ethylene adipate) hybrid networks. I. Nanostructure and segmental dynamics. \textit{Polymer}. Amsterdam: Elsevier, 2002, roč.~43, č.~25, s.~6943-6953. ISSN~0032-3861.

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