Spontaneous pinning of domain growth during spinodal decomposition of off‐critical polymer mixtures. II. Scaling analysis

Autor:	Tatsuo Izumitani, Mikihito Takenaka, Takeji Hashimoto
Rok vydání:	1993
Předmět:	Materials science Scattering Spinodal decomposition Critical phenomena General Physics and Astronomy Thermodynamics Light scattering chemistry.chemical_compound Polybutadiene chemistry Polymer chemistry Polystyrene Physical and Theoretical Chemistry Structure factor Scaling
Zdroj:	The Journal of Chemical Physics. 98:3528-3539
ISSN:	1089-7690 0021-9606
DOI:	10.1063/1.464073
Popis:	Later‐stage spinoidal decomposition (SD) of off‐critical mixtures of poly(styrene‐ran‐butadiene) SBR/polyisoprene or SBR/polybutadiene was investigated by time‐resolved light scattering. Changes in the scaled structure factor F(x,t)≡qm(t)3I(x,t) with x≡q/qm(t) were determined as a function of the composition w of the mixture and of the phase separation temperature T, where qm(t) is the wave number q at the peak position of the scattering intensity profile I(q,t) at time t. It was found that the later‐stage SD for the off‐critical mixture is divided into four stages: intermediate, pseudolate, transition, and pinning. The change in the structure factor F(x,t) at large x implied that the dynamical percolation‐to‐cluster transition occurs before the pinning stage.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0cfef5c3ccea067f37ca8144b68fe04c https://doi.org/10.1063/1.464073 Zobrazit plný text záznamu