Naslov
Lamellar block copolymers as viewed by deuterium NMR spectroscopy

Autori
Valić, Srećko ; Šorgić, Božica ; Deloche, Bertrand ; Gallot, Yves

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Abstracts of the 40th International Symposium on Macromolecules / - Pariz : International Union of Pure and Applied Chemistry, 2004, 4110-4110

Skup
40th International Symposium on Macromolecules (40 ; 2004)

Mjesto i datum
Pariz, Francuska, 04.07.2004. - 09.07.2004

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
block copolymer; lamellar; orientation; NMR; crystallization
(block copolymer; lamellar; orientation; NMR)

Sažetak
Oriantational dynamics of the chain segments in a lamellar structure of block copolymer was studied by deuterium NMR spectroscopy. Polystyrene-polybutadiene diblock (PS-PB) and polystyrene-polybutadiene-polystyrene triblock (PS-PB-PS) were studied by the use of short perdeuterated PB chains (NMR probes). The results show an uniaxial character of the chain dynamics. This effect is more pronounced in PS-PB-PS, because of possible different chain conformations. The orientational dynamics of probe chains in PS-PB is compared with that observed in PS-PB having perdeuterated PB block. The segmental dynamics of a semicrystalline polystyrene-polydimethylsiloxane (PS-PDMS) was investigated by the use of deuterated octane (C8D18).

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA