Procesy relaksacyjne i struktura fazowa kopolimerów estrowo-eteroamidowych

A. Kozłowska; J. Majszczyk

Published : 2022-09-01

Vol. 50 No. 11-12 (2005)

Relaxation processes and phase structure of ester-etheramide copolymers

A. Kozłowska J. Majszczyk

Abstract

The results of investigations by DSC and DMTA methods as well as dielectric properties of ester-etheramide copolymers - poly[ester-block-(ether-amide)] (PEEA) built of hard oligoester blocks (PBT) and soft oligoetheramide ones (OEA). Three series of PEEA differing in weight parts and polymerization degrees of hard and soft blocks were evaluated (Table 1). The effects of these variables on the following values were determined: phase transition temperatures (Fig. 1), dynamic mechanical properties (storage modulus, loss modulus and loss tangent - Fig. 2) and on the courses of dielectric relaxation processes (Fig. 3-6). An increase in phase separation has been found with elongation of oligoetheramide chain. The results of all our investigations show that PEEA type materials discussed show the properties typical for multiblock thermoplastic elastomers.

Keywords

termoplastyczne elastomery multiblokowe ; oligoestrowe bloki sztywne ; oligoamidowe bloki giętkie ; przemiany fazowe ; dynamiczne właściwości mechaniczne ; relaksacja dielektryczna multiblock thermoplastic elastomers ; oligoester soft blocks ; oligoester hard blocks ; phase transition ; dynamic mechanical properties ; dielectric relaxation

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Kozłowska, A., & Majszczyk, J. (2022). Relaxation processes and phase structure of ester-etheramide copolymers. Polimery, 50(11-12), 844–850. Retrieved from https://polimery.ichp.vot.pl/index.php/p/article/view/1696

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A. Kozłowska polimery@ichp.pl

Affiliation
Politechnika Szczecińska, Instytut Polimerów, ul. Pułaskiego 10, 70-310 Szczecin

J. Majszczyk

Affiliation
Politechnika Szczecińska, Instytut Fizyki, al. Piastów 48/49, 70-310 Szczecin