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https://open.uns.ac.rs/handle/123456789/8733
Nаziv: | The influence of organoclays on the morphology, phase separation and thermal properties of polycarbonate-based polyurethane hybrid materials | Аutоri: | Pavličević, Jelena Ŝpírková, Milena Sinadinović-Fišer, Snežana Budinski-Simendić, Jaroslava Govedarica (Borota), Olga Janković, Milovan |
Ključnе rеči: | Polycarbonate-Based Polyurethane;Bentonite;Montmorillonite;Phase separation;Thermal properties | Dаtum izdаvаnjа: | 27-авг-2013 | Izdаvаč: | Society of Chemists and Technologists of Macedonia co-published with the Ss. Cyril and Methodius University in Skopje. | Čаsоpis: | Macedonian Journal of Chemistry and Chemical Engineering | Sažetak: | Polycarbonate-based polyurethane (PC-PU) nanostructured composites were obtained using a onestep technique, by the addition of 1 wt.% organically modified clays (either bentonite or montmorillonite). Only aliphatic components (polycarbonate diol, hexamethylene-diisocyanate and 1,4-butane diol) were used as reactants. The hard segment content of the obtained polyurethanes was 30 wt.%. Scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FT-IR) were performed to investigate the morphology and hydrogen bonding formation in prepared elastomers. The influence of nanofilleraddition on thermal properties of PC-PUs was studied using differential scanning calorimetry (DSC). The degree of phase separation of polyurethane nanocomposites was not influenced by the dispersion ofsilicate layers in the elastomeric matrix. It was determined that bentonite and montmorillonite affectthe melting transition of hard segments and the recrystallization process, which is very important for the processing and recycling of the prepared polyurethane hybrid materials. | URI: | https://open.uns.ac.rs/handle/123456789/8733 | ISSN: | 18575552 |
Nаlаzi sе u kоlеkciјаmа: | TF Publikacije/Publications |
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