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The Empirical Core-Chain Model



Boualem Hammouda, Man-Ho Kim


Small-angle scattering requires models to analyze the data. A core-chain model has been available to fit data from solutions of core-chain particles. When the core particles are "hard" with well-defined surface, that model has been found to work well and produce characteristic oscillations observed in the data. In the case of "soft" core particles with no well-defined surface and no distinct oscillations in the data, an empirical core-chain model is introduced here. This model includes chain swelling in the grafted polymer chains. It was used to fit small-angle neutron scattering (SANS) data from a dilute solution to core-chain particles in which the core is "soft". The smooth data trends (no oscillations) are nicely reproduced. Moreover, the radius of gyration of core-chain particles has been worked out and estimated for the measured sample.
Journal of Molecular Liquids


Small-angle scattering, core-grafted chain, form factor, soft shell, Guinier-Porod, SANS


Hammouda, B. and Kim, M. (2017), The Empirical Core-Chain Model, Journal of Molecular Liquids, [online], (Accessed April 15, 2024)
Created July 12, 2017, Updated June 19, 2018