skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Microdomain contraction in microphase-separated multiblock copolymers

Abstract

Linear multiblock copolymers, like their diblock analogs, undergo microphase separation and order into periodic morphologies when the blocks are sufficiently incompatible. To explore the conformations of such materials, four symmetric poly(styrene-[ital b]-isoprene)[sub [ital n]] copolymers with 2[ital n] (1[le][ital n][lt]=4) perfectly alternating blocks of nearly equal mass have been synthesized. Small-angle x-ray scattering reveals that the microdomain periodicity decreases with [ital n] along the lamellar normal, thereby confirming theoretical predictions and providing direct evidence for bridging among the 2([ital n][minus]1) middle blocks.

Authors:
 [1];  [2]; ;  [1];  [3]
  1. Corporate Research Division, The Procter Gamble Company, Cincinnati, Ohio 45239 (United States)
  2. Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695 (United States)
  3. Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)
Publication Date:
OSTI Identifier:
6785586
Resource Type:
Journal Article
Journal Name:
Physical Review, B: Condensed Matter; (United States)
Additional Journal Information:
Journal Volume: 47:21; Journal ID: ISSN 0163-1829
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COPOLYMERS; CONFORMATIONAL CHANGES; DOMAIN STRUCTURE; LAMELLAE; SMALL ANGLE SCATTERING; X-RAY DIFFRACTION; COHERENT SCATTERING; DIFFRACTION; ORGANIC COMPOUNDS; ORGANIC POLYMERS; POLYMERS; SCATTERING; 360602* - Other Materials- Structure & Phase Studies

Citation Formats

Smith, S D, Spontak, R J, Satkowski, M M, Ashraf, A, and Lin, J S. Microdomain contraction in microphase-separated multiblock copolymers. United States: N. p., 1993. Web. doi:10.1103/PhysRevB.47.14555.
Smith, S D, Spontak, R J, Satkowski, M M, Ashraf, A, & Lin, J S. Microdomain contraction in microphase-separated multiblock copolymers. United States. https://doi.org/10.1103/PhysRevB.47.14555
Smith, S D, Spontak, R J, Satkowski, M M, Ashraf, A, and Lin, J S. 1993. "Microdomain contraction in microphase-separated multiblock copolymers". United States. https://doi.org/10.1103/PhysRevB.47.14555.
@article{osti_6785586,
title = {Microdomain contraction in microphase-separated multiblock copolymers},
author = {Smith, S D and Spontak, R J and Satkowski, M M and Ashraf, A and Lin, J S},
abstractNote = {Linear multiblock copolymers, like their diblock analogs, undergo microphase separation and order into periodic morphologies when the blocks are sufficiently incompatible. To explore the conformations of such materials, four symmetric poly(styrene-[ital b]-isoprene)[sub [ital n]] copolymers with 2[ital n] (1[le][ital n][lt]=4) perfectly alternating blocks of nearly equal mass have been synthesized. Small-angle x-ray scattering reveals that the microdomain periodicity decreases with [ital n] along the lamellar normal, thereby confirming theoretical predictions and providing direct evidence for bridging among the 2([ital n][minus]1) middle blocks.},
doi = {10.1103/PhysRevB.47.14555},
url = {https://www.osti.gov/biblio/6785586}, journal = {Physical Review, B: Condensed Matter; (United States)},
issn = {0163-1829},
number = ,
volume = 47:21,
place = {United States},
year = {Tue Jun 01 00:00:00 EDT 1993},
month = {Tue Jun 01 00:00:00 EDT 1993}
}