Well-ordered microdomain structures in polydisperse poly(styrene)-poly(acrylic acid) diblock copolymers from controlled radical polymerization

D. Bendejacq; Virginie Ponsinet; M. Joanicot; Yueh Lin Loo; Richard Alan Register

doi:10.1021/ma020158z

Well-ordered microdomain structures in polydisperse poly(styrene)-poly(acrylic acid) diblock copolymers from controlled radical polymerization

D. Bendejacq, Virginie Ponsinet, M. Joanicot, Yueh Lin Loo, Richard Alan Register

Research output: Contribution to journal › Article › peer-review

157 Scopus citations

Abstract

To investigate whether diblock copolymers with substantial distributions of molecular weight and composition can self-assemble into highly regular microdomain structures, we examine the morphologies of polystyrene-b-poly(acrylic acid), diblock copolymers (PS-PAA) synthesized by controlled radical polymerization in emulsion. Despite diblock polydispersity indices of ca. 2, solvent-cast films of these diblocks, as well as their blends with PS homopolymer of low molecular weight, exhibit well-ordered lamellar or hexagonally packed cylindrical morphologies in the midrange of composition, as shown by small-angle X-ray scattering and transmission electron microscopy. In several specimens, well-ordered regions of lamellae and cylinders appear to coexist, Films of very asymmetric diblocks or blends exhibit spherical microdomains without lattice order.

Original language	English (US)
Pages (from-to)	6645-6649
Number of pages	5
Journal	Macromolecules
Volume	35
Issue number	17
DOIs	https://doi.org/10.1021/ma020158z
State	Published - Aug 13 2002

All Science Journal Classification (ASJC) codes

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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abstract = "To investigate whether diblock copolymers with substantial distributions of molecular weight and composition can self-assemble into highly regular microdomain structures, we examine the morphologies of polystyrene-b-poly(acrylic acid), diblock copolymers (PS-PAA) synthesized by controlled radical polymerization in emulsion. Despite diblock polydispersity indices of ca. 2, solvent-cast films of these diblocks, as well as their blends with PS homopolymer of low molecular weight, exhibit well-ordered lamellar or hexagonally packed cylindrical morphologies in the midrange of composition, as shown by small-angle X-ray scattering and transmission electron microscopy. In several specimens, well-ordered regions of lamellae and cylinders appear to coexist, Films of very asymmetric diblocks or blends exhibit spherical microdomains without lattice order.",

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T1 - Well-ordered microdomain structures in polydisperse poly(styrene)-poly(acrylic acid) diblock copolymers from controlled radical polymerization

AU - Bendejacq, D.

AU - Ponsinet, Virginie

AU - Joanicot, M.

AU - Loo, Yueh Lin

AU - Register, Richard Alan

PY - 2002/8/13

Y1 - 2002/8/13

N2 - To investigate whether diblock copolymers with substantial distributions of molecular weight and composition can self-assemble into highly regular microdomain structures, we examine the morphologies of polystyrene-b-poly(acrylic acid), diblock copolymers (PS-PAA) synthesized by controlled radical polymerization in emulsion. Despite diblock polydispersity indices of ca. 2, solvent-cast films of these diblocks, as well as their blends with PS homopolymer of low molecular weight, exhibit well-ordered lamellar or hexagonally packed cylindrical morphologies in the midrange of composition, as shown by small-angle X-ray scattering and transmission electron microscopy. In several specimens, well-ordered regions of lamellae and cylinders appear to coexist, Films of very asymmetric diblocks or blends exhibit spherical microdomains without lattice order.

AB - To investigate whether diblock copolymers with substantial distributions of molecular weight and composition can self-assemble into highly regular microdomain structures, we examine the morphologies of polystyrene-b-poly(acrylic acid), diblock copolymers (PS-PAA) synthesized by controlled radical polymerization in emulsion. Despite diblock polydispersity indices of ca. 2, solvent-cast films of these diblocks, as well as their blends with PS homopolymer of low molecular weight, exhibit well-ordered lamellar or hexagonally packed cylindrical morphologies in the midrange of composition, as shown by small-angle X-ray scattering and transmission electron microscopy. In several specimens, well-ordered regions of lamellae and cylinders appear to coexist, Films of very asymmetric diblocks or blends exhibit spherical microdomains without lattice order.

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Well-ordered microdomain structures in polydisperse poly(styrene)-poly(acrylic acid) diblock copolymers from controlled radical polymerization

Abstract

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