Identification of relaxation processes in the dynamic structure factor of diblock copolymers. Far from the ordering transition

G. Fytas; R. Sigel; S. Pispas; D. Vlassopoulos; N. Hadjichristidis

Identification of relaxation processes in the dynamic structure factor of diblock copolymers. Far from the ordering transition

G. Fytas^*, R. Sigel, S. Pispas, D. Vlassopoulos, N. Hadjichristidis

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

Abstract

The dynamic structure factor S(q,t) of entangled solutions of ultra high molecular weight styrene-isoprene (SI) diblock copolymers in a common good solvent (toluene) is explored by photon correlation spectroscopy. One symmetric and two asymmetric SI samples with two and five fractionations were examined. In the disordered state, the order parameter fluctuations relax via two distinct chain relaxations (fast Rouse and slow reputation) and chain diffusion. This relaxation mechanism is S(q,t) is valid only in the homogeneous region, away from the strong fluctuations.

Original language	English (US)
Pages (from-to)	1024-1025
Number of pages	2
Journal	American Chemical Society, Polymer Preprints, Division of Polymer Chemistry
Volume	40
Issue number	2
State	Published - Aug 1999
Externally published	Yes

ASJC Scopus subject areas

Polymers and Plastics

Cite this

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title = "Identification of relaxation processes in the dynamic structure factor of diblock copolymers. Far from the ordering transition",

abstract = "The dynamic structure factor S(q,t) of entangled solutions of ultra high molecular weight styrene-isoprene (SI) diblock copolymers in a common good solvent (toluene) is explored by photon correlation spectroscopy. One symmetric and two asymmetric SI samples with two and five fractionations were examined. In the disordered state, the order parameter fluctuations relax via two distinct chain relaxations (fast Rouse and slow reputation) and chain diffusion. This relaxation mechanism is S(q,t) is valid only in the homogeneous region, away from the strong fluctuations.",

author = "G. Fytas and R. Sigel and S. Pispas and D. Vlassopoulos and N. Hadjichristidis",

year = "1999",

month = aug,

language = "English (US)",

volume = "40",

pages = "1024--1025",

journal = "American Chemical Society, Polymer Preprints, Division of Polymer Chemistry",

issn = "0032-3934",

number = "2",

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TY - JOUR

T1 - Identification of relaxation processes in the dynamic structure factor of diblock copolymers. Far from the ordering transition

AU - Fytas, G.

AU - Sigel, R.

AU - Pispas, S.

AU - Vlassopoulos, D.

AU - Hadjichristidis, N.

PY - 1999/8

Y1 - 1999/8

N2 - The dynamic structure factor S(q,t) of entangled solutions of ultra high molecular weight styrene-isoprene (SI) diblock copolymers in a common good solvent (toluene) is explored by photon correlation spectroscopy. One symmetric and two asymmetric SI samples with two and five fractionations were examined. In the disordered state, the order parameter fluctuations relax via two distinct chain relaxations (fast Rouse and slow reputation) and chain diffusion. This relaxation mechanism is S(q,t) is valid only in the homogeneous region, away from the strong fluctuations.

AB - The dynamic structure factor S(q,t) of entangled solutions of ultra high molecular weight styrene-isoprene (SI) diblock copolymers in a common good solvent (toluene) is explored by photon correlation spectroscopy. One symmetric and two asymmetric SI samples with two and five fractionations were examined. In the disordered state, the order parameter fluctuations relax via two distinct chain relaxations (fast Rouse and slow reputation) and chain diffusion. This relaxation mechanism is S(q,t) is valid only in the homogeneous region, away from the strong fluctuations.

UR - http://www.scopus.com/inward/record.url?scp=0032626265&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:0032626265

SN - 0032-3934

VL - 40

SP - 1024

EP - 1025

JO - American Chemical Society, Polymer Preprints, Division of Polymer Chemistry

JF - American Chemical Society, Polymer Preprints, Division of Polymer Chemistry

IS - 2

ER -

Identification of relaxation processes in the dynamic structure factor of diblock copolymers. Far from the ordering transition

Abstract

ASJC Scopus subject areas

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