Hydration and glass transition of hybrid non-isocyanate polyurethanes with POSS inclusions
Authors:
- Konstantinos N. Raftopoulos,
- Izabela Łukaszewska,
- Carlos Bujalance Calduch,
- Piotr Stachak,
- Sebastian Lalik,
- Edyta Hebda,
- Monika Marzec,
- Krzysztof Pielichowski
Abstract
A non-isocyanate poly (hydroxyurethane) network was synthesized by reaction of a tricyclic carbonate compound with diamines. The system was modified by two types of Polyhedral Oligomeric Silsesquioxane (POSS) molecules, one retaining the crosslinked nature of the system, and another effectively loosening it. We studied water absorption as a function of environmental humidity and observed that all systems are extremely hydrophilic, absorbing up to 65% of water when exposed to 97% environmental humidity. In parallel, using differential scanning calorimetry and dielectric spectroscopy, we studied the effects of POSS and the significant plasticization caused by absorbed water on the glass transition and charge mobility. In dry materials, crosslinking POSS seems to reinforce the matrix and at least initially slow down mobility while the opposite effect is observed for the moiety that loosens the network. Both POSS inhibit plasticization, both indirectly by inhibiting water absorption, and directly, by stiffening the network, especially in the case of crosslinking POSS.
- Record ID
- CUT761822ba5c9d4edc905f4c651b1a01fa
- Publication categories
- ;
- Author
- Journal series
- Polymer, ISSN 0032-3861, e-ISSN 1873-2291
- Issue year
- 2022
- Vol
- 253
- Pages
- [1-16]
- Article number
- 125010
- Other elements of collation
- fot.; schem.; tab.; wykr.; Bibliografia (na s.) - 14-16; Bibliografia (liczba pozycji) - 92; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 253
- Substantive notes
- Supplementary data to this article at https://doi. org/10.1016/j.polymer.2022.125010.
- Keywords in English
- polyurethane, POSS, hydration, non-isocyanate
- ASJC Classification
- ;
- DOI
- DOI:10.1016/j.polymer.2022.125010 Opening in a new tab
- URL
- https://www.sciencedirect.com/science/article/pii/S0032386122004980 Opening in a new tab
- Related project
- Language
- eng (en) English
- License
- Score (nominal)
- 100
- Score source
- journalList
- Score
- Publication indicators
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT761822ba5c9d4edc905f4c651b1a01fa/
- URN
urn:pkr-prod:CUT761822ba5c9d4edc905f4c651b1a01fa
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.