A Facile Synthesis of Dynamic, Shape-Changing Polymer Particles

Abstract

We herein report a new facile strategy to ellipsoidal block copolymer nanoparticles that exhibit a pH-triggered anistropic swelling profile. In a first step, elongated particles with an axially stacked lamellae structure are selectively prepared by utilizing functional surfactants to control the phase separation of symmetric polystyrene-b-poly(2-vinylpyridine) (PS-b-P2VP) in dispersed droplets. In a second step, the dynamic shape change is realized by cross-linking the P2VP domains, thereby connecting glassy PS discs with pH-sensitive hydrogel actuators.

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Document Details

Document Type
Technical Report
Publication Date
Apr 02, 2014
Accession Number
ADA616610

Entities

People

  • Craig Hawker
  • Cynthia X. Wang
  • Daniel Klinger
  • Debra J. Audus
  • Edward J. Kramer
  • Glenn H. Fredrickson
  • Kato L. Killops
  • Luke A. Connal
  • Se G. Jang
  • Stephan Kraemer

Organizations

  • University of California, Santa Barbara

Tags

Communities of Interest

  • Biomedical
  • Counter WMD
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aspect Ratio
  • Assembly
  • Block Copolymers
  • Copolymers
  • Energy
  • Films
  • Macromolecules
  • Materials
  • Molecular Weight
  • Nanoparticles
  • Particle Size
  • Particles
  • Payload
  • Phase Separation
  • Polymers
  • Self Assembly
  • Thin Films

Fields of Study

  • Chemistry

Readers

  • Fluid Dynamics.
  • Nanocomposite Materials Science
  • Polymer Science and Technology

Technology Areas

  • Biotechnology
  • Microelectronics