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Thermodynamic Differences Between Deuterated and Protonated Polystyrenes Evaluated Using Reversed Phase Liquid Chromatography
Author(s) -
Kayillo Sindy,
Shalliker R. Andrew,
Dennis Gary R.
Publication year - 2005
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200500207
Subject(s) - protonation , deuterium , chemistry , molecule , neutron scattering , phase (matter) , high performance liquid chromatography , polymer chemistry , organic chemistry , chromatography , neutron , ion , physics , quantum mechanics
Summary: Deuterated compounds are generally considered to possess very similar properties to their protonated analogues. Reversed phase liquid chromatography (RPLC) was used to measure thermodynamic interactions between deuterated and protonated n ‐butyl polystyrenes and a C18 stationary phase. Significant differences in enthalpies and entropies of interaction were observed for deuterated and protonated n ‐butyl polystyrenes. This is very important because many techniques, such as small‐angle neutron scattering and neutron reflectivity, assume that the interaction of these molecules are identical.Structure of n ‐butyl polystyrenes.