http://hdl.handle.net/20.500.12128/20546
Title: | New star-shaped polyether-pentols (PEPOs) for fabrication of crosslinked Polyurethanes-synthesis and characterization |
Authors: | Jurek-Suliga, Justyna Grobelny, Zbigniew Golba, Sylwia Okła, Hubert Bednarczyk, Katarzyna |
Keywords: | polymer synthesis; molecular engineering; ROP; oxiranes anionic polymerization; potassium hydroxyalkoxides; macropentols |
Issue Date: | 2021 |
Citation: | "Polymers" 2021, iss. 13, art. no. 2150 |
Abstract: | Polyether-pentols (PEPOs) were synthesized from glycidyl ethers and butylene oxide with the application of tripotassium salts of 2,2,6,6-tetrakis(hydroxymethyl)cyclohexanol (HMCH) activated 18C6 for ring-opening polymerization (ROP). The construction of the applied initiator system reflects the ability of crown ether to influence the degree of ion-pair separation with an increased activating effect. As a result formation of bi- or trimodal polymers was observed with molar masses in the range of (Mn = 1200–6000). The observed multi-fraction composition is prescribed to the formation of ionic aggregates with different reactivities during polymerization. The mechanism of the studied processes is discussed. The obtained PEPOs served for a crosslinked PUR synthesis, for which the hydrogen bond index for coupling of hard segments was calculated. Additionally, the range of phase separation was calculated that was higher for PUR-containing aromatic rings as the substituent. |
URI: | http://hdl.handle.net/20.500.12128/20546 |
DOI: | 10.3390/polym13132150 |
ISSN: | 2073-4360 |
Appears in Collections: | Artykuły (WNŚiT) |
File | Description | Size | Format | |
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Jurek-Suliga_New_star-shaped_polyether-pentols_(PEPOs)_for_fabrication.pdf | 2,55 MB | Adobe PDF | View/Open |
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