Department of Chemistry, Hannam University, Daejeon, Korea;
Jin Woo Yoon;Seong Ho Choi;Jong Han Chun;Chul Hun Eum;Sung Kwang Cho;HaiDoo Kwen;Seungho Lee;
Split-flow thin cell (SPLITT) fraclionation (SF) provides separation of colloidal particles or macromolecules into two fractions. A gravitational SF(GSF) system was constructed and Us applicability was tested for removal of aggregates from mass-produced polymelhyl methacrylate (PMMA) latex beads. The full-feed depletion (FFD) mode of GSF (FFD-GSF) was found to be a simpler alternative to the conventional mode for removal of the aggregates. Unlike in the conventional mode, where two inlets are used for feeding of the sample suspension and the carrier liquid respectively, only one inlet (for the sample feeding) is used in the FFD mode, allowing easier control of the flow rate. Also the sample suspension is not diluted during FFD mode operation. Aggregated particles were found only in one of the two fractions, allowing removal of the aggregates. The sample was continuously fed into the GSF system, showing potential application to a large quantity operation for removal of the PMMA aggregates.