Cited by 100Block Copolymer Self-AssemblyPolymer crystallization and propertiesAdvanced Polymer Synthesis and Characterization

Fluctuations, Order, and Disorder in Short Diblock Copolymers

Lee, Sangwoo, Gillard, Timothy M., Bates, Frank S.·2013·AIChE Journal

Abstract

The phase behavior for a series of poly(1,4‐isoprene‐b‐DL‐lactide) diblock copolymers characterized by a relatively large Flory–Huggins segment–segment interaction parameter (χ) and low degrees of polymerization (N) over a range of compositions was reported. Ordered‐state morphologies were deduced from small‐angle x‐ray scattering (SAXS) measurements, and χ(T) was determined from order‐disorder transition temperatures (TODT's) associated with the compositionally symmetric specimens and assuming the mean‐field theory, that is, (χN)ODT=10.5. The ODT was determined by differential scanning calorimetry, SAXS, and dynamic mechanical spectroscopy, and shown to be weakly first‐order, with latent heats of transition that vary strongly with composition. We interpret this behavior in terms of the mean and Gauss interfacial curvature of the ordered‐state morphologies and with respect to composition fluctuations in the disordered state. These results offer a fresh strategy for investigating weakly first‐order phase transitions within the Brazovskii universality class. © 2013 American Institute of Chemical Engineers AIChE J, 59: 3502–3513, 2013

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Crossref · 10.1002/aic.14023

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  • Since the hard block is poly(lactide), at a fixed molar mass, decreasing the polarity of the midblock segment effectively increases the segregation strength of the two blocks.

    “Since in this work the hard block is poly(lactide), at a fi xed molar mass, decreasing the polarity of the midblock segment e ff ectively increases the segregation strength of the two blocks. 11,13,64,85 -89”

    From Aliphatic Polyester Block Polymer Design (2016) · cites this paper as [88]

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Authors
Lee, S., Gillard, T. M., & Bates, F. S.
Affiliations
University of Minnesota (US)
Corresponding author
Bates, Frank S.
Venue
AIChE Journal
Publisher
Wiley
Published
2013-02-11
Volume
59
Issue
9
Pages
3502-3513
ISSN
  • 0001-1541 (ISSN-L)
  • 1547-5905
OpenAlex
W2108642112
Cited by
100
References
0
Citations by year
2026: 4 · 2025: 1 · 2024: 8 · 2023: 2 · 2022: 8 · 2021: 5 · 2020: 9 · 2019: 4 · 2018: 8 · 2017: 15 · 2016: 12 · 2015: 11 · 2014: 11 · 2013: 2
FWCI
5.41
Type
journal article
Language
en
Open access
closed
Locations
AIChE Journal (publishedVersion)
Topics
  • Physical Sciences › Materials Science › Materials Chemistry › Block Copolymer Self-Assembly
  • Physical Sciences › Materials Science › Polymers and Plastics › Polymer crystallization and properties
  • Physical Sciences › Chemistry › Organic Chemistry › Advanced Polymer Synthesis and Characterization
Keywords
diblock copolymers, order-disorder transition, Flory-Huggins interaction parameter, compositional fluctuations, interfacial curvature, small-angle X-ray scattering, mean-field theory, block copolymer phase behavior

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