Complementary assessment of γ-irradiated polyurethane-POSS hybrids by chemiluminescence and differential scanning calorimetry
Authors:
- Traian Zaharescu,
- Yaxuan Chou,
- Edyta Hebda,
- Konstantinos N. Raftopoulos,
- Krzysztof Pielichowski
Abstract
A series of segmental polyurethane organic inorganic hybrids with polyhedral oligomeric silsesquioxanes (POSS) incorporated along the chain contour on the hard segments is irradiated by γ radiation at doses up to 100 kGy. The effects of this treatment on the morphology of the materials and the low temperature stability to oxidation are assessed complementary by non-isothermal and isothermal chemiluminescence experiments as well as with differential scanning calorimetry. From the methodological point of view, it was found that both physical and chemical processes have a footprint on both methods, but the physical ones manifest themselves more intensely in the thermal method, whereas chemical ones in chemiluminescence. Due to γ-exposure the onset oxidation temperatures decrease by several degrees, but POSS seems to protect the material to some extent. γ-Irradiation damage has also a negative effect on the development of phase separation, which is further enhanced by the presence of POSS. The crystallinity of the soft segments in the matrix is completely suppressed by irradiation, however, even a small amount of POSS preserves the phenomenon.
- Record ID
- CUTbb1c2624206e4d75ab22a99cc8eb4b63
- Publication categories
- ;
- Author
- Journal series
- Polymer Testing, ISSN 0142-9418, e-ISSN 1873-2348
- Issue year
- 2021
- Vol
- 96
- Pages
- [1-9]
- Article number
- 107117
- Other elements of collation
- wykr.; Bibliografia (na s.) - 8-9; Bibliografia (liczba pozycji) - 45; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 96
- Keywords in English
- polyurethane, POSS, irradiation, degradation, chemiluminescence, DSC
- DOI
- DOI:10.1016/j.polymertesting.2021.107117 Opening in a new tab
- URL
- https://www.sciencedirect.com/science/article/pii/S0142941821000672 Opening in a new tab
- Language
- eng (en) English
- License
- Score (nominal)
- 100
- Additional fields
- Indeksowana w: Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUTbb1c2624206e4d75ab22a99cc8eb4b63/
- URN
urn:pkr-prod:CUTbb1c2624206e4d75ab22a99cc8eb4b63
* 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.