title: Peak parking determination of the obstruction factor in lauryl acrylate monolithic CEC columns.
abstract: The peak parking method was used to determine the obstruction factor of lauryl acrylate porous polymer monoliths. Polymers were prepared in situ in fused-silica capillaries using thermally initiated polymerization. These columns have been used for CEC of neutral analytes. Thiourea, which is unretained, was used as the test analyte for the obstruction factor measurement. The obstruction factor was determined to be 0.72 with a SD of (+/-0.01), which is consistent with the concept that organic porous polymer monoliths are more permeable than traditional LC stationary phases.
authors.affiliation: Department of Chemistry, Trinity University, San Antonio, TX 78212, USA.
authors.forename: Gwendolyn J
authors.initials: GJ
authors.lastname: Anderson
authors.forename: Zoe
authors.initials: Z
authors.lastname: LaPier
authors.forename: Michael B
authors.initials: MB
authors.lastname: Cammarata
authors.forename: Tae Sun
authors.initials: TS
authors.lastname: Cullum
authors.forename: Michelle M
authors.initials: MM
authors.lastname: Bushey
mesh_terms: D000179:Acrylates / Q000737:chemistry*; D053801:Capillary Electrochromatography / Q000379:methods*; D004058:Diffusion; D016014:Linear Models; D008956:Models, Chemical; D011108:Polymers / Q000737:chemistry; D013890:Thiourea / Q000737:chemistry
chemical_list: D000179:Acrylates; D011108:Polymers; D013890:Thiourea