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Spin‐Coating: In Situ Studies of Phase Separation and Crystallization Directed by Marangoni Instabilities During Spin‐Coating (Adv. Mater. 48/2013)
Author(s) -
Toolan Daniel T. W.,
Pullan Nikki,
Harvey Michael J.,
Topham Paul D.,
Howse Jonathan R.
Publication year - 2013
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201370299
Subject(s) - materials science , crystallization , spherulite (polymer physics) , coating , spin coating , phase (matter) , polarizer , polymer , crystallinity , chemical engineering , optics , composite material , organic chemistry , chemistry , physics , birefringence , engineering
A spherulite of PEO is imaged during spin‐coating using a combination of crossed polarizers and white‐light stroboscopic microscopy. The interplay between the phase separation and crystallization in polymer blends during spin‐coating is investigated by J. R. Howse and co‐workers on page 7033, revealing the appearance of Bernard cells during the phase separation process and that, critically in blends of PS:PEO, phase separation occurs first, which is then followed by crystallization.