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Preparation of Highly Porous Coordination Polymer Coatings on Macroporous Polymer Monoliths for Enhanced Enrichment of Phosphopeptides
Published on: July 14, 2015
Monolithic columns with optimized pore structure for molecular size-based separations of synthetic polymers
Alexander Korolev1, Elena Victorova, Timur Ibragimov
1Topchiev Institute of Petrochemical Synthesis RAS, Moscow, Russia.
Journal of Separation Science
|May 17, 2012
Summary
Synthesizing monolithic capillary columns with specific porogens improved polystyrene separation. Shorter alcohol chains enhanced molar mass (MM) separation performance, optimizing polymer analysis.
Area of Science:
- Polymer Chemistry
- Chromatography Science
Background:
- Monolithic capillary columns are crucial for polymer analysis.
- Divinylbenzene-based columns offer tunable properties.
- Porogen selection significantly impacts column performance.
Purpose of the Study:
- To synthesize monolithic capillary columns using divinylbenzene and various alcohol porogens.
- To evaluate the impact of porogen composition on column permeability and separation efficiency.
- To optimize column synthesis for effective separation of polystyrene standards by molar mass (MM).
Main Methods:
- Synthesis of monolithic capillary columns using divinylbenzene and different alcohol porogens.
- Chromatographic separation of polystyrene standards to determine molar mass (MM).
- Characterization of column permeability and calibration graph generation.
Main Results:
- Decreasing alcohol chain length (dodecanol to octanol) reduced column permeability and improved polystyrene separation.
- Removing good solvents from the porogen mixture increased permeability but decreased separation performance.
- Optimized columns using nonanol with toluene or mesitylene effectively separated 14 polystyrene standards across a wide MM range.
Conclusions:
- Alcohol porogen chain length is a critical factor in controlling monolithic column permeability and separation characteristics.
- Careful selection of porogen composition, including solvents, is essential for achieving high-performance polymer separations.
- Optimized monolithic capillary columns demonstrate significant potential for accurate molar mass determination of polymers.
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