A new method to determine dispersive surface energy site distributions by inverse gas chromatography
Author(s)
Smith, RR
Williams, DR
Burnett, DJ
Heng, JYY
Type
Journal Article
Abstract
A computational model to predict the relative energy site contributions of a heterogeneous material from data collected by finite dilution–inverse gas chromatography (FD-IGC) is presented in this work. The methodology employed a multisolvent system site filling model utilizing Boltzmann statistics, expanding on previous efforts to calculate “experienced energies” at varying coverage, yielding a retention volume distribution allowing calculation of a surface free energy distribution. Surface free energy distributions were experimentally measured for racemic ibuprofen and β-mannitol powders, the energies of each were found in the ranges 43–52 and 40–55 mJ/m2, respectively, over a surface coverage range of 0–8%. The computed contributions to surface energy values were found to match closely with data collected on macroscopic crystals by alternative techniques (±<1.5 mJ/m2).
Date Issued
2014-07-15
Date Acceptance
2014-06-19
Citation
Langmuir: the ACS journal of surfaces and colloids, 2014, 30 (27), pp.8029-8035
ISSN
0743-7463
Publisher
American Chemical Society
Start Page
8029
End Page
8035
Journal / Book Title
Langmuir: the ACS journal of surfaces and colloids
Volume
30
Issue
27
Copyright Statement
© 2014 American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in Langmuir, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://dx.doi.org/10.1021/la500688d
Identifier
https://pubs.acs.org/doi/full/10.1021/la500688d
Subjects
Science & Technology
Physical Sciences
Technology
Chemistry, Multidisciplinary
Chemistry, Physical
Materials Science, Multidisciplinary
Chemistry
Materials Science
CHEMISTRY, MULTIDISCIPLINARY
CHEMISTRY, PHYSICAL
MATERIALS SCIENCE, MULTIDISCIPLINARY
LACTOSE
CRYSTALLINE
ADSORPTION
DELIVERY
POWDERS
Publication Status
Published
Date Publish Online
2014-06-30