Polymer Crystallization in 25-nm Spheres

Phys. Rev. Lett. 84, 4120 – Published 1 May 2000
Yueh-Lin Loo, Richard A. Register, and Anthony J. Ryan

Abstract

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.

DOI: http://dx.doi.org/10.1103/PhysRevLett.84.4120

  • Received 27 October 1999
  • Published in the issue dated 1 May 2000

© 2000 The American Physical Society

Authors & Affiliations

Yueh-Lin Loo and Richard A. Register

  • Department of Chemical Engineering, Princeton University, Princeton, New Jersey 08544-5263

Anthony J. Ryan

  • Department of Chemistry, University of Sheffield, Sheffield S3 7HF, United Kingdom

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