A Monte Carlo Study of Mixtures of Charged and Neutral Polymers in Solution

Mixtures of neutral and charged polymers are studied by Monte Carlo simulation techniques. The charges on the chains are assumed to interact with a Debye–Hückel potential. The monomer density and the screening are kept constant, while the proportion between charged and neutral polymer is changed. Th...

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Bibliographic Details
Published in:Macromolecular theory and simulations 2001-11, Vol.10 (9), p.802-807
Main Authors: Irurzun, I. M., Matteo, C. L.
Format: Article
Language:English
Subjects:
Chains (polymeric)
charge effects
Charging
Computer simulation
Density
Incompatibility
miscibility
Monomers
Monte Carlo methods
Monte Carlo simulation
polyelectrolytes
Polymers
structure
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Summary:Mixtures of neutral and charged polymers are studied by Monte Carlo simulation techniques. The charges on the chains are assumed to interact with a Debye–Hückel potential. The monomer density and the screening are kept constant, while the proportion between charged and neutral polymer is changed. The single‐chain structure factor of each species is analyzed, and drastic changes are observed with the variation of the fraction of charged chains. Changes entail modifications of the radius of gyration, which suggest the existence of attractive interactions. Results agree with experimental evidence of incompatibility in mixtures at low polyelectrolyte concentrations.
ISSN:1022-1344
1521-3919
DOI:10.1002/1521-3919(20011101)10:9<802::AID-MATS802>3.0.CO;2-5