Diffusion of compact macromolecules through polymer meshes: Mesh dynamics and probe dynamics

R. Biehl; X. Guo; R. K. Prud'homme; M. Monkenbusch; J. Allgeier; D. Richter

doi:10.1016/j.physb.2004.03.258

Diffusion of compact macromolecules through polymer meshes: Mesh dynamics and probe dynamics

R. Biehl, X. Guo, R. K. Prud'homme, M. Monkenbusch, J. Allgeier, D. Richter

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

6 Scopus citations

Abstract

The diffusion of compact macromolecules in polymer networks is examined to understand how polymer networks or gels could be used to filter different types of macromolecules. We present new measurements of the network and probe dynamics by neutron spin-echo spectroscopy (NSE). The investigated system consists of the protein α-lactalbumin (R_g = 15.2Å) as probe and a network of high molecular weight polyethylenoxide. The high molecular weight ensures a long disentanglement time for the polymer in order to create a stable network. We compare the network dynamics and the dynamics of the probe protein in the network at different mesh sizes. We study the dynamics at different q values between 0.03 and 0.22Å^-1. The corresponding length scales reach from distances smaller than the mesh size to larger than the mesh size.

Original language	English (US)
Pages (from-to)	76-78
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	350
Issue number	1-3
DOIs	https://doi.org/10.1016/j.physb.2004.03.258
State	Published - Jul 30 2004

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Keywords

Gel dynamics
Macromolecule
Neutron spin echo
Probe diffusion

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10.1016/j.physb.2004.03.258

Cite this

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title = "Diffusion of compact macromolecules through polymer meshes: Mesh dynamics and probe dynamics",

abstract = "The diffusion of compact macromolecules in polymer networks is examined to understand how polymer networks or gels could be used to filter different types of macromolecules. We present new measurements of the network and probe dynamics by neutron spin-echo spectroscopy (NSE). The investigated system consists of the protein α-lactalbumin (Rg = 15.2{\AA}) as probe and a network of high molecular weight polyethylenoxide. The high molecular weight ensures a long disentanglement time for the polymer in order to create a stable network. We compare the network dynamics and the dynamics of the probe protein in the network at different mesh sizes. We study the dynamics at different q values between 0.03 and 0.22{\AA}-1. The corresponding length scales reach from distances smaller than the mesh size to larger than the mesh size.",

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T1 - Diffusion of compact macromolecules through polymer meshes

T2 - Mesh dynamics and probe dynamics

AU - Biehl, R.

AU - Guo, X.

AU - Prud'homme, R. K.

AU - Monkenbusch, M.

AU - Allgeier, J.

AU - Richter, D.

PY - 2004/7/30

Y1 - 2004/7/30

N2 - The diffusion of compact macromolecules in polymer networks is examined to understand how polymer networks or gels could be used to filter different types of macromolecules. We present new measurements of the network and probe dynamics by neutron spin-echo spectroscopy (NSE). The investigated system consists of the protein α-lactalbumin (Rg = 15.2Å) as probe and a network of high molecular weight polyethylenoxide. The high molecular weight ensures a long disentanglement time for the polymer in order to create a stable network. We compare the network dynamics and the dynamics of the probe protein in the network at different mesh sizes. We study the dynamics at different q values between 0.03 and 0.22Å-1. The corresponding length scales reach from distances smaller than the mesh size to larger than the mesh size.

AB - The diffusion of compact macromolecules in polymer networks is examined to understand how polymer networks or gels could be used to filter different types of macromolecules. We present new measurements of the network and probe dynamics by neutron spin-echo spectroscopy (NSE). The investigated system consists of the protein α-lactalbumin (Rg = 15.2Å) as probe and a network of high molecular weight polyethylenoxide. The high molecular weight ensures a long disentanglement time for the polymer in order to create a stable network. We compare the network dynamics and the dynamics of the probe protein in the network at different mesh sizes. We study the dynamics at different q values between 0.03 and 0.22Å-1. The corresponding length scales reach from distances smaller than the mesh size to larger than the mesh size.

KW - Gel dynamics

KW - Macromolecule

KW - Neutron spin echo

KW - Probe diffusion

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Diffusion of compact macromolecules through polymer meshes: Mesh dynamics and probe dynamics

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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