Affordable Access

Access to the full text

Polymerization-Induced Microphase Separation with Long-Range Order in Melts of Gradient Copolymers

Authors
  • Gavrilov, Alexey A.
  • Chertovich, Alexander V.1
  • 1 Semenov Federal Research Center for Chemical Physics, 119991 Moscow, Russia
Type
Published Article
Journal
Polymers
Publisher
MDPI AG
Publication Date
Nov 10, 2020
Volume
12
Issue
11
Identifiers
DOI: 10.3390/polym12112637
PMID: 33182631
PMCID: PMC7696285
Source
PubMed Central
Keywords
Disciplines
  • Communication
License
Green

Abstract

In this work, we studied the question of whether it is possible to develop a one-step approach for the creation of microphase-separated materials with long-range order with the help of spontaneous gradient copolymers, i.e., formed during controlled copolymerization solely due to the large difference in the reactivity ratios. To that end, we studied the polymerization-induced microphase separation in bulk on the example of a monomer pair with realistic parameters based on styrene (S) and vinylpirrolydone (VP) by means of computer simulation. We showed that for experimentally reasonable chain lengths, the structures with long-range order start to appear at the conversion degree as low as 76%; a full phase diagram in coordinates (fraction of VP—conversion degree) was constructed. Rather rich phase behavior was obtained; moreover, at some VP fractions, order–order transitions were observed. Finally, we studied how the conversion degree at which the order–disorder transition occurs changes upon varying the maximum average chain length in the system.

Report this publication

Statistics

Seen <100 times