Phase behavior of symmetric linear multiblock copolymers

P. E. Theodorakis, Nikolaos G. Fytas

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Molecular-dynamics simulations are used to study the phase behavior of a single linear multiblock copolymer with blocks of A- and B-type monomers under poor solvent conditions, varying the block length N, number of blocks n, and the solvent quality (by variation of the temperature T). The fraction f of A-type monomers is kept constant and equal to 0.5, and always the lengths of A and B blocks are equal (NA=NB=N), as well as the number of blocks (nA=nB). We identify the three following regimes where: i) full microphase separation between blocks of different type occurs (all blocks of A-type monomers form a single cluster, while all blocks of B-type monomers form another); ii) full microphase separation is observed with a certain probability; and iii) full microphase separation cannot take place. For a very high number of blocks n and very high N (not accessible to our simulations) further investigation is needed.
Original languageEnglish
Article number43001
JournalEPL
Volume93
Issue number4
DOIs
Publication statusPublished - 24 Feb 2011

Fingerprint

copolymers
monomers
simulation
molecular dynamics
temperature

Bibliographical note

The full text is currently unavailable on the repository.

Cite this

Phase behavior of symmetric linear multiblock copolymers. / Theodorakis, P. E.; Fytas, Nikolaos G.

In: EPL, Vol. 93, No. 4, 43001, 24.02.2011.

Research output: Contribution to journalArticle

@article{71d2ed07b31f4b7cb06335f97ba29a35,
title = "Phase behavior of symmetric linear multiblock copolymers",
abstract = "Molecular-dynamics simulations are used to study the phase behavior of a single linear multiblock copolymer with blocks of A- and B-type monomers under poor solvent conditions, varying the block length N, number of blocks n, and the solvent quality (by variation of the temperature T). The fraction f of A-type monomers is kept constant and equal to 0.5, and always the lengths of A and B blocks are equal (NA=NB=N), as well as the number of blocks (nA=nB). We identify the three following regimes where: i) full microphase separation between blocks of different type occurs (all blocks of A-type monomers form a single cluster, while all blocks of B-type monomers form another); ii) full microphase separation is observed with a certain probability; and iii) full microphase separation cannot take place. For a very high number of blocks n and very high N (not accessible to our simulations) further investigation is needed.",
author = "Theodorakis, {P. E.} and Fytas, {Nikolaos G.}",
note = "The full text is currently unavailable on the repository.",
year = "2011",
month = "2",
day = "24",
doi = "10.1209/0295-5075/93/43001",
language = "English",
volume = "93",
journal = "EPL",
issn = "0295-5075",
publisher = "European Physical Society",
number = "4",

}

TY - JOUR

T1 - Phase behavior of symmetric linear multiblock copolymers

AU - Theodorakis, P. E.

AU - Fytas, Nikolaos G.

N1 - The full text is currently unavailable on the repository.

PY - 2011/2/24

Y1 - 2011/2/24

N2 - Molecular-dynamics simulations are used to study the phase behavior of a single linear multiblock copolymer with blocks of A- and B-type monomers under poor solvent conditions, varying the block length N, number of blocks n, and the solvent quality (by variation of the temperature T). The fraction f of A-type monomers is kept constant and equal to 0.5, and always the lengths of A and B blocks are equal (NA=NB=N), as well as the number of blocks (nA=nB). We identify the three following regimes where: i) full microphase separation between blocks of different type occurs (all blocks of A-type monomers form a single cluster, while all blocks of B-type monomers form another); ii) full microphase separation is observed with a certain probability; and iii) full microphase separation cannot take place. For a very high number of blocks n and very high N (not accessible to our simulations) further investigation is needed.

AB - Molecular-dynamics simulations are used to study the phase behavior of a single linear multiblock copolymer with blocks of A- and B-type monomers under poor solvent conditions, varying the block length N, number of blocks n, and the solvent quality (by variation of the temperature T). The fraction f of A-type monomers is kept constant and equal to 0.5, and always the lengths of A and B blocks are equal (NA=NB=N), as well as the number of blocks (nA=nB). We identify the three following regimes where: i) full microphase separation between blocks of different type occurs (all blocks of A-type monomers form a single cluster, while all blocks of B-type monomers form another); ii) full microphase separation is observed with a certain probability; and iii) full microphase separation cannot take place. For a very high number of blocks n and very high N (not accessible to our simulations) further investigation is needed.

U2 - 10.1209/0295-5075/93/43001

DO - 10.1209/0295-5075/93/43001

M3 - Article

VL - 93

JO - EPL

JF - EPL

SN - 0295-5075

IS - 4

M1 - 43001

ER -