Molecular dynamics in polyurethane foams chemically reinforced with POSS
Authors:
- Konstantinos N. Raftopoulos,
- Joanna Pagacz,
- Jan Ozimek,
- Stefanos Koutsoumpis,
- Sławomir Michałowski,
- Edyta Hebda,
- Jan Pielichowski,
- Krzysztof Pielichowski
Abstract
In this work, we report on the thermal and thermomechanical properties of rigid PU foams modified with POSS moieties, paying special attention to molecular dynamics of these systems. 1,2-Propanediolisobutyl POSS (PHI-POSS) are used as pendent groups and octa(3-hydroxy-3-methylbutyldimethylsiloxy) POSS (OCTA-POSS) serve as chemical crosslinks. DSC reveals an initial slowing down of the segmental dynamics for small loadings (5 wt%) of both POSS moieties, followed by an acceleration, probably due to changes in the topology of the PU network and the morphology of the foam. A low-temperature mechanical relaxation is observed by DMA and is attributed tentatively to a local β relaxation, much similar to that observed in hyperbranched polyurethanes.
- Record ID
- CUT91b217d4774840ef8378dd3b1a030256
- Publication categories
- ;
- Author
- Journal series
- Polymer Bulletin, ISSN 0170-0839, e-ISSN 1436-2449
- Issue year
- 2019
- Vol
- 76
- No
- 6
- Pages
- 2887-2898
- Other elements of collation
- tab.; wykr.; Bibliografia (na s.) - 2896-2898; Bibliografia (liczba pozycji) - 30; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 76, Iss. 6
- Keywords in English
- polyurethane foams, POSS, molecular dynamics, DMA
- DOI
- DOI:10.1007/s00289-018-2528-2 Opening in a new tab
- URL
- https://link.springer.com/article/10.1007/s00289-018-2528-2 Opening in a new tab
- Related project
- Zaawansowane organiczno-nieorganiczne materiały hybrydowe zawierające POSS: od nanorozmiarów do makroarchitektury. . Project leader at PK: , ,
Projects financed by NSC [Projekty finansowane przez NCN] - Language
- eng (en) English
- License
- Score (nominal)
- 40
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT91b217d4774840ef8378dd3b1a030256/
- URN
urn:pkr-prod:CUT91b217d4774840ef8378dd3b1a030256
* 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.