Hyperbranched poly(ether-siloxane)s containing ammonium groups: Synthesis, characterization and catalytic activity

Paweł Parzuchowski , Aleksandra Świderska , Marlena Roguszewska , Karolina Rolińska , Dominik Wołosz , Mariusz Mamiński


In this article we report an easy synthetic route towards hyperbranched polyglycerols (Amm-HBPGs) containing trimethylammonium groups and siloxane or hydroxyl end-groups. Siloxane derivatives of Amm-HBPGs were synthesized in an efficient five-step procedure including an anionic ring opening copolymerization of the phthalimide-epoxy monomer with glycidol, followed by reactions with allyl bromide, hydrosililation with hydrogenheptamethyltrisiloxane, hydrazinolysis of phthalimide groups and quaternization of resulting amine groups with methyl iodide. Hydroxyl derivatives were obtained by quaternization of previously reported aminated HBPG's with methyl iodide. Polymeric products were characterized using various NMR techniques, FTIR, and elemental analysis. Both Amm-HBPGs were shown to be effective in catalysis of addition of CO2 to oxirane. The hydrophilic catalysts showed higher efficiency but synthesis of ethylene carbonate was accompanied by formation of small amounts of ethylene glycol. The siloxane-containing catalyst was easily separable from reaction mixture showing high potential in the process of converting carbon dioxide into valuable chemical raw materials.

Author Paweł Parzuchowski (FC / CPCT)
Paweł Parzuchowski,,
- Chair Of Polymer Chemistry And Technology
, Aleksandra Świderska (FC / CPCT)
Aleksandra Świderska,,
- Chair Of Polymer Chemistry And Technology
, Marlena Roguszewska (FC / CPCT)
Marlena Roguszewska,,
- Chair Of Polymer Chemistry And Technology
, Karolina Rolińska (FC / CPCT)
Karolina Rolińska,,
- Chair Of Polymer Chemistry And Technology
, Dominik Wołosz (FC / CPCT)
Dominik Wołosz,,
- Chair Of Polymer Chemistry And Technology
, Mariusz Mamiński - [Szkola Glowna Gospodarstwa Wiejskiego]
Mariusz Mamiński,,
Journal seriesPolymers, ISSN 2073-4360
Issue year2020
Publication size in sheets0.9
Keywords in Englishhyperbranched polymer; carbon dioxide; cycloaddition; polysiloxane; polyglycidol; catalysis; oxirane; ethylene carbonate
ASJC Classification1600 General Chemistry; 2507 Polymers and Plastics
URL https://www.mdpi.com/2073-4360/12/4/856
Languageen angielski
polymers-12-00856-v2.pdf 2.5 MB
Score (nominal)100
Score sourcejournalList
ScoreMinisterial score = 100.0, 28-08-2020, ArticleFromJournal
Publication indicators Scopus Citations = 0; WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2018 = 1.057; WoS Impact Factor: 2017 = 2.935 (2) - 2017=3.509 (5)
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