Reactive polymers, XXXV. The effect of polymerization conditions on the specific surface area of macroporous copolymers from glycidylmethacrylate‐ethylenedimethacrylate

Abstract

By the method of design of experiments it was investigated the effect of some components of polymerization feed as the content of inert components, crosslinking agent, initiator, thermodynamic quality of inert components and polymerization temperature on the specific surface area of the produced sorbents which were copolymers from glycidylmethacrylate and ethylenedimethacrylate. By varying the five parameters given above, it was possible to control the specific surface area within the range 0-460 m2 g-I. ZUSAMMENFASSUNG:Bei der Copolymerisation von Glycidylmethacrylat mit Ethylenglykoldimethacrylat wurden folgende Parameter variiert: Die Konzentration von Inertkomponente, Vernetzer, Initiator, die thermodynamische Qualitat der Inertkomponenten sowie die Polymerisationstemperatur. Hierdurch war es moglich, die spezifische Oberflache der Copolymeren in einem Bereich von 0 bis 460 m2g -' zu variieren.

Methacrylate‐based chromatographic media

“…With decreasing content of the crosslinking agent, the specific surface area also decreases. This is in agreement with results that have been observed in the standard suspension polymerization (vide supra) [37].…”

“…The concentration of initiator in the polymerization mixture is most often 1 wt% or less with respect to the monomers. The temperature range shown above is suitable for initiation using a number of common initiators such as dibenzoyl peroxide and 2,29-azobisisobutyronitrile [37]. Suspension polymerizations can also be initiated at low temperatures using UV light.…”

“…However, the effect of mixed porogens is not always a linear interpolation between those encountered for pure solvents. Relation of porous structure to the composition of the mixed porogenic mixture was demonstrated for GMA-EDMA beads in a series of extensive studies using factorial design of experiments and their statistical evaluation [18,37].…”

“…Porous structures prepared in the presence of high percentage of the porogen tend to be mechanically unstable and collapse on drying. For example, maximum specific surface area has been achieved for 40% crosslinked GMA-EDMA beads by polymerizing 36% of monomers and 64% of a dodecanol -cyclohexanol mixture [37].…”

Production and characterization of poly(ethylene glycol dimethacrylate-styrene-glycidyl methacrylate) microbeads

“…6 In this process, the porous matrices may be obtained by using diluents as extensively Polymer beads are widely used as carrier matrices studied for polystyrene, polymethymethacrylate, in various medical and biological applications, and polyacrylamide. [7][8][9][10][11][12][13][14] The type and concentrasuch as drug delivery systems, scintigraphic imtion of diluent in the monomer phase and the exaging, affinity chromatograpy, enzyme immobilitent of crosslinking control the porosity of the mization, and cell culturing.…”