Flexible polyurethane foams reinforced by functionalized polyhedral oligomeric silsesquioxanes: structural characteristics and evaluation of thermal/flammability properties
Authors:
- Edyta Hebda,
- Artur Bukowczan,
- Sławomir Michałowski,
- Krzysztof Pielichowski
Abstract
In this work, we report on flexible toluene diisocyanate (TDI)-based polyurethane foams (FPUFs) chemically modified by POSS moieties, i.e., octa (3-hydroxy-3-methylbutyldimethylsiloxy) POSS (OCTA-POSS) and 1,2-propanediolizo-butyl POSS (PHI-POSS). The influence of silsesquioxane on the PU foaming process, structure, morphology, physicochemical, and mechanical properties, as well as flammability, was examined. FT-IR analysis provided evidence for the chemical incorporation of the nanofiller into the foam structure. It was found that the addition of POSS increases the apparent density of the foam and its compressive strength. The XRD and SEM-EDS techniques showed the uniform distribution of POSS in the FPUF with agglomeration depending on the kind and content of the introduced POSS moieties. The analysis of the thermogravimetric and microcalorimetry data revealed an improved resistance to the burning of FPUFs containing reactive POSS, as evidenced by the reduced rate of heat release (HRR). Importantly, the mechanical properties tests showed that the incorporation of silsesquioxane nanoparticles into the polyurethane structure via covalent bonds strengthens the foam integrity.
- Record ID
- CUT41a750be173a45c9b737c5b81c236663
- Publication categories
- ;
- Author
- Journal series
- Polymers, ISSN , e-ISSN 2073-4360, Biweekly
- Issue year
- 2022
- Vol
- 14
- No
- 21
- Pages
- [1-14]
- Article number
- 4743
- Other elements of collation
- rys.; tab.; wykr.; Bibliografia (na s.) - 12-14; Bibliografia (liczba pozycji) - 38; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 14, Iss. 21
- Substantive notes
- This article belongs to the Special Issue: Advances in Flame Retardant Polymeric Materials II
- Keywords in English
- flexible polyurethane foam, oligosilsesquioxanes, hybrid materials, POSS, flammability
- ASJC Classification
- ;
- DOI
- DOI:10.3390/polym14214743 Opening in a new tab
- URL
- https://www.mdpi.com/2073-4360/14/21/4743 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)
- 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/CUT41a750be173a45c9b737c5b81c236663/
- URN
urn:pkr-prod:CUT41a750be173a45c9b737c5b81c236663
* 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.