In:
Macromolecular Rapid Communications, Wiley, Vol. 30, No. 7 ( 2009-04), p. 515-520
Abstract:
The morphology transition of polystyrene‐ block ‐poly(butadiene)‐ block ‐poly(2‐vinylpyridine) (SBV) triblock thin film induced in benzene vapor showing weak selectivity for PS is investigated. The order‐order transitions (OOT) in the sequence of core‐shell cylinders (C), sphere in ‘diblock gyroid’ (sdG), sphere in lamella (sL) and sphere (S) are observed. The projection along (111) direction in Gyroid phase (sdG(111)) is found to epitaxially grow from C(001) in the film. Instead of sdG(111), sdG(110) 0.1875 develops to the phase of sL. Consequently, the film experiences the transition sequence of sdG(111) → sdG(211) → sdG(110) 0.25 → sdG(110) 0.1875 between C and sL. The mechanism is analyzed from the total surface area of the blocks. magnified image
Type of Medium:
Online Resource
ISSN:
1022-1336
,
1521-3927
DOI:
10.1002/marc.200800675
Language:
English
Publisher:
Wiley
Publication Date:
2009
detail.hit.zdb_id:
1475027-2