Multiblock segmented polyurethanes and polyurethane-ureas based on poly(ethylene oxide)/poly(propylene oxide)/poly(ethylene oxide) macrodiols. Synthesis and characterization

D. Filip; D. Macocinschi; E. Ioanid; S. Vlad

Published : 2010-05-30

Vol. 55 No. 5 (2010)

Multiblock segmented polyurethanes and polyurethane-ureas based on poly(ethylene oxide)/poly(propylene oxide)/poly(ethylene oxide) macrodiols. Synthesis and characterization

D. Filip D. Macocinschi E. Ioanid S. Vlad

Abstract

The amphiphilic behavior of poly(ethylene oxide)/poly(propylene oxide)/poly(ethylene oxide) block copolymers has been broadened by introducing new urethane-urea as well as poly(ethylene glycol) co-segments in polyurethane (PUR) and polyurethane-ureas (PURU) materials. Supermolecular organization and self-assembly was confirmed by electron microscopy transmission observations. The driving force for self-assembling is represented by the amphiphilic nature of these materials, the interactional segment length and stabilization through hydrogen bonding. FT-IR spectroscopy was used to investigate the hydrogen bonding related to phase segregation. Phase transitions and phase segregation was evidenced by DSC analyses. The relationship between structure and thermal stability was investigated by thermogravimetric analysis.

Keywords

poliuretany ; poliuretanomoczniki ; struktura multiblokowa ; amfifilowość ; zdolność do samorzutnej agregacji polyurethane ; polyurethane-urea ; multi-block structure ; amphiphility ; self assembly

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Filip, D., Macocinschi, D., Ioanid, E., & Vlad, S. (2010). Multiblock segmented polyurethanes and polyurethane-ureas based on poly(ethylene oxide)/poly(propylene oxide)/poly(ethylene oxide) macrodiols. Synthesis and characterization. Polimery, 55(5), 358-365. Retrieved from https://ichp.vot.pl/index.php/p/article/view/1016

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