Conformation of A2B and A3B miktoarm star copolymers in dilute solutions

Costas Vlahos; Yiannis Tselikas; Nikos Hadjichristidis; Jacques Roovers; Antonio Rey; Juan Freire

doi:10.1021/ma960291p

Conformation of A₂B and A₃B miktoarm star copolymers in dilute solutions

Costas Vlahos, Yiannis Tselikas, Nikos Hadjichristidis^*, Jacques Roovers, Antonio Rey, Juan Freire

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

The dimensionless ratio σ_G, expressing quantitatively the effects of heterointeractions between unlike units on the conformational properties of copolymers, has been determined experimentally by intrinsic viscosity analysis for the A₂B and A₃B miktoarm stars in various solvent conditions. In the case of symmetric samples (where the lengths of A and B arms are the same) in a common good solvent, the values of the required Flory parameter Φ for homopolymer stars with three and four arms were used. For the other cases and solvent conditions, Φ was determined by extended Monte Carlo calculations which provide a lower bound of this quantity. The experimental values of σ_G are compared with the results obtained by Monte Carlo simulations and recent renormalization group predictions.

Original language	English (US)
Pages (from-to)	5599-5604
Number of pages	6
Journal	Macromolecules
Volume	29
Issue number	17
DOIs	https://doi.org/10.1021/ma960291p
State	Published - Aug 12 1996
Externally published	Yes

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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title = "Conformation of A2B and A3B miktoarm star copolymers in dilute solutions",

abstract = "The dimensionless ratio σG, expressing quantitatively the effects of heterointeractions between unlike units on the conformational properties of copolymers, has been determined experimentally by intrinsic viscosity analysis for the A2B and A3B miktoarm stars in various solvent conditions. In the case of symmetric samples (where the lengths of A and B arms are the same) in a common good solvent, the values of the required Flory parameter Φ for homopolymer stars with three and four arms were used. For the other cases and solvent conditions, Φ was determined by extended Monte Carlo calculations which provide a lower bound of this quantity. The experimental values of σG are compared with the results obtained by Monte Carlo simulations and recent renormalization group predictions.",

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T1 - Conformation of A2B and A3B miktoarm star copolymers in dilute solutions

AU - Vlahos, Costas

AU - Tselikas, Yiannis

AU - Hadjichristidis, Nikos

AU - Roovers, Jacques

AU - Rey, Antonio

AU - Freire, Juan

PY - 1996/8/12

Y1 - 1996/8/12

N2 - The dimensionless ratio σG, expressing quantitatively the effects of heterointeractions between unlike units on the conformational properties of copolymers, has been determined experimentally by intrinsic viscosity analysis for the A2B and A3B miktoarm stars in various solvent conditions. In the case of symmetric samples (where the lengths of A and B arms are the same) in a common good solvent, the values of the required Flory parameter Φ for homopolymer stars with three and four arms were used. For the other cases and solvent conditions, Φ was determined by extended Monte Carlo calculations which provide a lower bound of this quantity. The experimental values of σG are compared with the results obtained by Monte Carlo simulations and recent renormalization group predictions.

AB - The dimensionless ratio σG, expressing quantitatively the effects of heterointeractions between unlike units on the conformational properties of copolymers, has been determined experimentally by intrinsic viscosity analysis for the A2B and A3B miktoarm stars in various solvent conditions. In the case of symmetric samples (where the lengths of A and B arms are the same) in a common good solvent, the values of the required Flory parameter Φ for homopolymer stars with three and four arms were used. For the other cases and solvent conditions, Φ was determined by extended Monte Carlo calculations which provide a lower bound of this quantity. The experimental values of σG are compared with the results obtained by Monte Carlo simulations and recent renormalization group predictions.

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U2 - 10.1021/ma960291p

DO - 10.1021/ma960291p

M3 - Article

AN - SCOPUS:0030214655

SN - 0024-9297

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SP - 5599

EP - 5604

JO - Macromolecules

JF - Macromolecules

IS - 17

ER -

Conformation of A₂B and A₃B miktoarm star copolymers in dilute solutions

Abstract

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