Journal
PHYSICAL REVIEW LETTERS
Volume 84, Issue 18, Pages 4120-4123Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.84.4120
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Crystallization within the discrete spheres of a block copolymer mesophase was studied by time-resolved x-ray scattering. The cubic packing of microdomains, established by self-assembly in the melt, is preserved throughout crystallization by strong interblock segregation even though the amorphous matrix block is well above its glass transition temperature. Homogeneous nucleation within each sphere yields isothermal crystallizations which follow first-order kinetics, contrasting with the sigmoidal kinetics normally exhibited in the quiescent crystallization of bulk polymers.
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