J 2006

Structure-property relationships in novel poly(imide-amide)-poly(ethylene glycol) hybrid networks

KRIPOTOU, S., P. PISSIS, Petr SYSEL, Vladimír ŠINDELÁŘ, V. A. BERSHTEIN et. al.

Basic information

Original name

Structure-property relationships in novel poly(imide-amide)-poly(ethylene glycol) hybrid networks

Name in Czech

Vztah mezi strukturou a vlastnostmi nových hybridních sítí na bázi poly(imid-amid)-poly(ethylen glykol)

Authors

KRIPOTOU, S. (300 Greece), P. PISSIS (300 Greece), Petr SYSEL (203 Czech Republic), Vladimír ŠINDELÁŘ (203 Czech Republic, guarantor) and V. A. BERSHTEIN (643 Russian Federation)

Edition

Polymer, Amsterdam, Elsevier, 2006, 0032-3861

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10404 Polymer science

Country of publisher

Czech Republic

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 2.773

RIV identification code

RIV/00216224:14310/06:00016589

Organization unit

Faculty of Science

UT WoS

000234617600047

Keywords in English

DRS;TSDC;hybrid networks

Tags

International impact, Reviewed
Změněno: 5/2/2010 15:20, prof. Ing. Vladimír Šindelář, Ph.D.

Abstract

V originále

Broadband dielec. relaxation spectroscopy (DRS), thermally stimulated depolarisation currents (TSDC), differential scanning calorimetry (DSC) and to a lesser extent water uptake measurements, were employed to investigate mol. mobility, morphol. and crystn./melting events of PEG in poly(imide-amide)-polyethylene glycol hybrid networks (PIA-PEG) with short (M n=1000 g/mol) and long (M n=3400 g/mol) PEG crosslinks. The results obtained suggest long range connectivity of the PEG component in the hybrids with short PEG crosslinks at PEG content higher than 40 wt% and in these with long PEG crosslinks at PEG content higher than 20 wt%. Crystn. of the PEG component is obsd. by DSC in the hybrids with the longer crosslinks at sufficiently high content of PEG, only. The glass transition temp., T g, of PEG component in the hybrids with the shorter PEG crosslinks is shifted to higher temps. compared to that of the hybrids with longer PEG crosslinks, while suppression of the glass transition of the PEG component is obsd. in the hybrids with the shorter PEG crosslinks at PEG content lower than 40 wt%. The results are discussed in terms of constraints to segmental motion of the PEG crosslinks, imposed by fixed PEG chain ends on the rigid PI chains.

In Czech

Vztah mezi strukturou a vlastnostmi nových hybridních sítí na bázi poly(imid-amid)-poly(ethylen glykol)byl studován pomocí širokopásové dielektrické relaxační spektroskopie(DRS), termicky stimulovaného depolarizačního proudu (TSDC) a diferenciální snímací kalorimetrie (DSC).