Pregled bibliografske jedinice broj: 294295
Photodegradation of Polyurethane
Photodegradation of Polyurethane // Advances in urethane science and technology, 12 (1993), 134-165 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 294295 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Photodegradation of Polyurethane
Autori
Rek, Vesna
Izvornik
Advances in urethane science and technology (0044-6378) 12
(1993);
134-165
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
polyurethane; mechanism of photooxidative degradation; supermolecular; structures; spectroscopic measurements; yellowing
Sažetak
This chapter is a review of the investigations of photooxidative degradation of polyurethane, PUR. The mechanism of photooxidative degradation and secondary crosslinking reactions in PUR are presented. The course and the intensity of the changes in molecular, supermolecular and morphological structures of PUR due to photooxidative degradation are reviewed. These structural changes were followed by comparative spectroscopic measurements (IR, NMR, UV), as well as by DSC analysis, DMA, X-ray measurements, electron microscopy and GPC measurements samples of PUR samples before and after various times of photooxidative degradation. The influence of the nature of the polyols and the isocyanate components used in the syntheses of PUR on the photooxidative process and changes in PUR structures mentioned above as well as on the rate of yellowing of PUR samples are discussed. The correlation between intensities of structural changes of PUR and its mechanical properties are presented. The influence of the physical state of PUR and the thickness of the PUR samples on the photooxidative stability of PUR are also described.
Izvorni jezik
Engleski
Znanstvena područja
Kemijsko inženjerstvo
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- SCI-EXP, SSCI i/ili A&HCI
