USANS as a probe of large-scale structure in attractive colloidal glasses of block copolymer micelles

Mark A. Crichton; Neil S. Forbes; Surita R. Bhatia

USANS as a probe of large-scale structure in attractive colloidal glasses of block copolymer micelles

Mark A. Crichton
, Neil S. Forbes
, Surita R. Bhatia

Chemistry

University of Massachusetts

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

Abstract

We have used ultra-small-angle scattering (USANS) and fluorescence microscopy to show the existence of large-scale structure in attractive colloidal glasses composed of block polyelectrolyte micelles. Our systems display evidence of surface scattering, with the scattered intensity I at low scattering vector q scaling as I ∼ q^x with x in the range -3 to -4. We believe this is due to surface scattering from large, highly polydisperse aggregates with rough interfaces. USANS may provide an ideal way to distinguish fractal colloidal gels and colloidal glasses.

Original language	English
Article number	Q7.11
Pages (from-to)	63-68
Number of pages	6
Journal	Materials Research Society Symposium - Proceedings
Volume	840
State	Published - 2005
Event	Neutron and X-Ray Scattering as Probes of Multiscale Phenomena - Boston, MA, United States Duration: Nov 29 2004 → Dec 1 2004

Cite this

@article{1c9d3c9308454a139b49aea50710d650,

title = "USANS as a probe of large-scale structure in attractive colloidal glasses of block copolymer micelles",

abstract = "We have used ultra-small-angle scattering (USANS) and fluorescence microscopy to show the existence of large-scale structure in attractive colloidal glasses composed of block polyelectrolyte micelles. Our systems display evidence of surface scattering, with the scattered intensity I at low scattering vector q scaling as I ∼ qx with x in the range -3 to -4. We believe this is due to surface scattering from large, highly polydisperse aggregates with rough interfaces. USANS may provide an ideal way to distinguish fractal colloidal gels and colloidal glasses.",

author = "Crichton, \{Mark A.\} and Forbes, \{Neil S.\} and Bhatia, \{Surita R.\}",

year = "2005",

language = "English",

volume = "840",

pages = "63--68",

journal = "Materials Research Society Symposium - Proceedings",

issn = "0272-9172",

note = "Neutron and X-Ray Scattering as Probes of Multiscale Phenomena ; Conference date: 29-11-2004 Through 01-12-2004",

}

TY - JOUR

T1 - USANS as a probe of large-scale structure in attractive colloidal glasses of block copolymer micelles

AU - Crichton, Mark A.

AU - Forbes, Neil S.

AU - Bhatia, Surita R.

PY - 2005

Y1 - 2005

N2 - We have used ultra-small-angle scattering (USANS) and fluorescence microscopy to show the existence of large-scale structure in attractive colloidal glasses composed of block polyelectrolyte micelles. Our systems display evidence of surface scattering, with the scattered intensity I at low scattering vector q scaling as I ∼ qx with x in the range -3 to -4. We believe this is due to surface scattering from large, highly polydisperse aggregates with rough interfaces. USANS may provide an ideal way to distinguish fractal colloidal gels and colloidal glasses.

AB - We have used ultra-small-angle scattering (USANS) and fluorescence microscopy to show the existence of large-scale structure in attractive colloidal glasses composed of block polyelectrolyte micelles. Our systems display evidence of surface scattering, with the scattered intensity I at low scattering vector q scaling as I ∼ qx with x in the range -3 to -4. We believe this is due to surface scattering from large, highly polydisperse aggregates with rough interfaces. USANS may provide an ideal way to distinguish fractal colloidal gels and colloidal glasses.

UR - https://www.scopus.com/pages/publications/20344390269

M3 - Conference article

AN - SCOPUS:20344390269

SN - 0272-9172

VL - 840

SP - 63

EP - 68

JO - Materials Research Society Symposium - Proceedings

JF - Materials Research Society Symposium - Proceedings

M1 - Q7.11

T2 - Neutron and X-Ray Scattering as Probes of Multiscale Phenomena

Y2 - 29 November 2004 through 1 December 2004

ER -

USANS as a probe of large-scale structure in attractive colloidal glasses of block copolymer micelles

Abstract

Other files and links

Fingerprint

Cite this