TY - JOUR
T1 - Thermoreversible, Epitaxial [Formula presented] Transitions in Block Copolymer Solutions
AU - Bang, Joona
AU - Lodge, Timothy P.
AU - Wang, Xiaohui
AU - Brinker, Kristin L.
AU - Burghardt, Wesley R.
PY - 2002
Y1 - 2002
N2 - Uncharged block copolymer micelles display thermoreversible transitions between close-packed and bcc lattices for a range of concentration, solvent selectivity, and copolymer composition. Using small-angle x-ray scattering on shear-oriented solutions, highly aligned fcc crystals are seen to transform epitaxially to bcc crystals, with fcc/bcc orientational relationships that are well established in martensitic transformations in metals. The transition is driven by decreasing solvent selectivity with increasing temperature, inducing solvent penetration of the micellar core.
AB - Uncharged block copolymer micelles display thermoreversible transitions between close-packed and bcc lattices for a range of concentration, solvent selectivity, and copolymer composition. Using small-angle x-ray scattering on shear-oriented solutions, highly aligned fcc crystals are seen to transform epitaxially to bcc crystals, with fcc/bcc orientational relationships that are well established in martensitic transformations in metals. The transition is driven by decreasing solvent selectivity with increasing temperature, inducing solvent penetration of the micellar core.
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U2 - 10.1103/PhysRevLett.89.215505
DO - 10.1103/PhysRevLett.89.215505
M3 - Article
AN - SCOPUS:85038304213
SN - 0031-9007
VL - 89
JO - Physical review letters
JF - Physical review letters
IS - 21
ER -