Complementary assessment of γ-irradiated polyurethane-POSS hybrids by chemiluminescence and differential scanning calorimetry
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 t...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-04-01
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| Series: | Polymer Testing |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0142941821000672 |
| _version_ | 1823926932269432832 |
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| author | Traian Zaharescu Yaxuan Chou Edyta Hebda Konstantinos N. Raftopoulos Krzysztof Pielichowski |
| author_facet | Traian Zaharescu Yaxuan Chou Edyta Hebda Konstantinos N. Raftopoulos Krzysztof Pielichowski |
| author_sort | Traian Zaharescu |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-16T20:31:40Z |
| format | Article |
| id | doaj.art-189778c266934669bc9194c7907555a8 |
| institution | Directory Open Access Journal |
| issn | 0142-9418 |
| language | English |
| last_indexed | 2024-12-16T20:31:40Z |
| publishDate | 2021-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Polymer Testing |
| spelling | doaj.art-189778c266934669bc9194c7907555a82022-12-21T22:17:25ZengElsevierPolymer Testing0142-94182021-04-0196107117Complementary assessment of γ-irradiated polyurethane-POSS hybrids by chemiluminescence and differential scanning calorimetryTraian Zaharescu0Yaxuan Chou1Edyta Hebda2Konstantinos N. Raftopoulos3Krzysztof Pielichowski4INCDIE ICPE CA, Radiochemistry Center, 313 Splaiul Unirii st, Bucharest, 030138, Romania; Corresponding author. INCDIE ICPE CA, Radiochemistry Center, 313 Splaiul Unirii st, Bucharest, 030138, Romania.Cracow University of Technology, Department of Chemistry and Technology of Polymers, 24 Warszawska st, 31-155, Kraków, Poland; School of Material Science and Chemical Engineering, Xi'an Technological University, Xi'an, 710021, ChinaCracow University of Technology, Department of Chemistry and Technology of Polymers, 24 Warszawska st, 31-155, Kraków, PolandCracow University of Technology, Department of Chemistry and Technology of Polymers, 24 Warszawska st, 31-155, Kraków, Poland; Corresponding author. Cracow University of Technology, Department of Chemistry and Technology of Polymers, 24 Warszawska st, 31-155, Kraków, Poland.Cracow University of Technology, Department of Chemistry and Technology of Polymers, 24 Warszawska st, 31-155, Kraków, PolandA 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.http://www.sciencedirect.com/science/article/pii/S0142941821000672PolyurethanePOSSIrradiationDegradationChemiluminescenceDSC |
| spellingShingle | Traian Zaharescu Yaxuan Chou Edyta Hebda Konstantinos N. Raftopoulos Krzysztof Pielichowski Complementary assessment of γ-irradiated polyurethane-POSS hybrids by chemiluminescence and differential scanning calorimetry Polymer Testing Polyurethane POSS Irradiation Degradation Chemiluminescence DSC |
| title | Complementary assessment of γ-irradiated polyurethane-POSS hybrids by chemiluminescence and differential scanning calorimetry |
| title_full | Complementary assessment of γ-irradiated polyurethane-POSS hybrids by chemiluminescence and differential scanning calorimetry |
| title_fullStr | Complementary assessment of γ-irradiated polyurethane-POSS hybrids by chemiluminescence and differential scanning calorimetry |
| title_full_unstemmed | Complementary assessment of γ-irradiated polyurethane-POSS hybrids by chemiluminescence and differential scanning calorimetry |
| title_short | Complementary assessment of γ-irradiated polyurethane-POSS hybrids by chemiluminescence and differential scanning calorimetry |
| title_sort | complementary assessment of γ irradiated polyurethane poss hybrids by chemiluminescence and differential scanning calorimetry |
| topic | Polyurethane POSS Irradiation Degradation Chemiluminescence DSC |
| url | http://www.sciencedirect.com/science/article/pii/S0142941821000672 |
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