Depletion and cluster formation in soft colloid - Polymer mixtures

E. Stiakakis; G. Petekidis; D. Vlassopoulos; C. N. Likos; H. Iatrou; N. Hadjichristidis; J. Roovers

doi:10.1209/epl/i2005-10283-y

Depletion and cluster formation in soft colloid - Polymer mixtures

E. Stiakakis^*, G. Petekidis, D. Vlassopoulos, C. N. Likos, H. Iatrou, N. Hadjichristidis, J. Roovers

^*Corresponding author for this work

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

63 Scopus citations

Abstract

The dynamics of colloidal star - linear homopolymer mixtures is investigated by photon correlation spectroscopy. In dilute star solutions, osmotic forces due to the added polymers lead initially to a shrinkage of the stars and eventually, at higher polymer concentrations, to stable star clusters. Furthermore, concentrated glassy star solutions melt upon addition of small amounts of linear polymers, as manifested by the remarkable speed-up of the star self-diffusion. Quantitative description of the experimental findings is provided by calculations of the effective star-star pair potential.

Original language	English (US)
Pages (from-to)	664-670
Number of pages	7
Journal	Europhysics Letters
Volume	72
Issue number	4
DOIs	https://doi.org/10.1209/epl/i2005-10283-y
State	Published - Nov 15 2005
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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title = "Depletion and cluster formation in soft colloid - Polymer mixtures",

abstract = "The dynamics of colloidal star - linear homopolymer mixtures is investigated by photon correlation spectroscopy. In dilute star solutions, osmotic forces due to the added polymers lead initially to a shrinkage of the stars and eventually, at higher polymer concentrations, to stable star clusters. Furthermore, concentrated glassy star solutions melt upon addition of small amounts of linear polymers, as manifested by the remarkable speed-up of the star self-diffusion. Quantitative description of the experimental findings is provided by calculations of the effective star-star pair potential.",

author = "E. Stiakakis and G. Petekidis and D. Vlassopoulos and Likos, {C. N.} and H. Iatrou and N. Hadjichristidis and J. Roovers",

year = "2005",

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language = "English (US)",

volume = "72",

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T1 - Depletion and cluster formation in soft colloid - Polymer mixtures

AU - Stiakakis, E.

AU - Petekidis, G.

AU - Vlassopoulos, D.

AU - Likos, C. N.

AU - Iatrou, H.

AU - Hadjichristidis, N.

AU - Roovers, J.

PY - 2005/11/15

Y1 - 2005/11/15

N2 - The dynamics of colloidal star - linear homopolymer mixtures is investigated by photon correlation spectroscopy. In dilute star solutions, osmotic forces due to the added polymers lead initially to a shrinkage of the stars and eventually, at higher polymer concentrations, to stable star clusters. Furthermore, concentrated glassy star solutions melt upon addition of small amounts of linear polymers, as manifested by the remarkable speed-up of the star self-diffusion. Quantitative description of the experimental findings is provided by calculations of the effective star-star pair potential.

AB - The dynamics of colloidal star - linear homopolymer mixtures is investigated by photon correlation spectroscopy. In dilute star solutions, osmotic forces due to the added polymers lead initially to a shrinkage of the stars and eventually, at higher polymer concentrations, to stable star clusters. Furthermore, concentrated glassy star solutions melt upon addition of small amounts of linear polymers, as manifested by the remarkable speed-up of the star self-diffusion. Quantitative description of the experimental findings is provided by calculations of the effective star-star pair potential.

UR - http://www.scopus.com/inward/record.url?scp=28244452855&partnerID=8YFLogxK

U2 - 10.1209/epl/i2005-10283-y

DO - 10.1209/epl/i2005-10283-y

M3 - Article

AN - SCOPUS:28244452855

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VL - 72

SP - 664

EP - 670

JO - Europhysics Letters

JF - Europhysics Letters

IS - 4

ER -

Depletion and cluster formation in soft colloid - Polymer mixtures

Abstract

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