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https://doi.org/10.15255/CABEQ.2017.1196

Photooxidative Stability of Polyurethane/Polycarbonate Blends

E. Govorčin Bajsić ; Department of Polymer Engineering and Organic Chemical Technology, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, 10 000 Zagreb, Croatia
E. Zdraveva ; Department of Basic Natural and Technical Sciences, Faculty of Textile Technology, University of Zagreb, Prilaz baruna Filipovića 28a, 10 000 Zagreb, Croatia

Puni tekst: engleski, pdf (3 MB) str. 191-203 preuzimanja: 337* citiraj
APA 6th Edition
Govorčin Bajsić, E. i Zdraveva, E. (2018). Photooxidative Stability of Polyurethane/Polycarbonate Blends. Chemical and Biochemical Engineering Quarterly, 32 (2), 191-203. https://doi.org/10.15255/CABEQ.2017.1196
MLA 8th Edition
Govorčin Bajsić, E. i E. Zdraveva. "Photooxidative Stability of Polyurethane/Polycarbonate Blends." Chemical and Biochemical Engineering Quarterly, vol. 32, br. 2, 2018, str. 191-203. https://doi.org/10.15255/CABEQ.2017.1196. Citirano 15.06.2021.
Chicago 17th Edition
Govorčin Bajsić, E. i E. Zdraveva. "Photooxidative Stability of Polyurethane/Polycarbonate Blends." Chemical and Biochemical Engineering Quarterly 32, br. 2 (2018): 191-203. https://doi.org/10.15255/CABEQ.2017.1196
Harvard
Govorčin Bajsić, E., i Zdraveva, E. (2018). 'Photooxidative Stability of Polyurethane/Polycarbonate Blends', Chemical and Biochemical Engineering Quarterly, 32(2), str. 191-203. https://doi.org/10.15255/CABEQ.2017.1196
Vancouver
Govorčin Bajsić E, Zdraveva E. Photooxidative Stability of Polyurethane/Polycarbonate Blends. Chemical and Biochemical Engineering Quarterly [Internet]. 2018 [pristupljeno 15.06.2021.];32(2):191-203. https://doi.org/10.15255/CABEQ.2017.1196
IEEE
E. Govorčin Bajsić i E. Zdraveva, "Photooxidative Stability of Polyurethane/Polycarbonate Blends", Chemical and Biochemical Engineering Quarterly, vol.32, br. 2, str. 191-203, 2018. [Online]. https://doi.org/10.15255/CABEQ.2017.1196

Sažetak
In this work the photooxidative stability of polyurethane/polycarbonate (PU/PC) blends was studied. Poly (ester–urethane) elastomers based on polycaprolactone glycol and an aromatic type of diisocyanate (MDI) were synthesized by a prepolymer procedure. Blends of PU and PC with different weight ratios were prepared using a Brabender mixer. Thermal and mechanical properties were evaluated after UV irradiation (200
hours) performing DSC, DMA, TGA and tensile tests. DMA results indicated partial miscibility of PC and PU in the PU/PC blends with higher hard segment content, attributed to favourable interactions between the ester groups from the soft segments and urethane groups from the hard segments. The photochemical degradation of the polyurethane is associated with the scission of the urethane group and photooxidation of the central CH2 group between the aromatic rings. The processes of photooxidative degradation are less pronounced in PU/PC blends with higher hard segment content in the polyurethane.






Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.

Ključne riječi
polyurethane; polycarbonate; elastomers; polymer blends; UV irradiation

Hrčak ID: 203171

URI
https://hrcak.srce.hr/203171

Posjeta: 514 *