2008/05/29 by Abigail Klopper, A. V. Klopper, Carsten Svaneborg +1
Materials Science · Physics and Astronomy · #Biological system #Block Copolymer Self-Assembly #Chemical physics #Computer science #Condensed matter physics #Correlation function (quantum field theory) #Function (biology) #Material Dynamics and Properties #Materials science #Neutron scattering #Nuclear magnetic resonance #Optics #Phase (matter) #Physics #Polymer #Quantum mechanics #Random phase approximation #Replica #Scale (ratio) #Scattering #Separation (statistics) #Statistical physics #Theoretical and Computational Physics #cond-mat.soft
paper · pdf · doi:10.1140/epje/i2008-10420-6
8 pages, 5 figures
arxiv created 2008/05/29 · openalex publication_date 2009/01/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We investigate the behaviour of randomly cross-linked (co)polymer blends using a combination of replica theory and large-scale molecular dynamics simulations. In particular, we derive the analogue of the random phase approximation for systems with quenched disorder and show how the required correlation functions can be calculated efficiently. By post-processing simulation data for homopolymer networks we are able to describe neutron scattering measurements in heterogeneous systems without resorting to microscopic detail and otherwise unphysical assumptions. We obtain structure function data which illustrate the expected microphase separation and contain system-specific information relating to the intrinsic length scales of our networks.