Procedure for Measuring Monomer Partition Coefficients

A high-pressure unit with on-line sampling of the aqueous phase has been developed to measure monomer partition coefficients [19]. Eig. 14.4 shows a schematic set-up of the equipment and a description of the relevant components and features. With this equipment, the partition coefficient m2 given by Eq. (7) can be measured as a function of pressure and temperature. 

In the proposed method, the presence of only two phases was assumed. Moreover, any significant change of volume of the phases was neglected. From the measured MMA concentration in the aqueous phase at a certain pressure and temperature, the partition coefficient can be calculated using Eq. (12). Here Cw,o stands for the initial MMA concentration in the aqueous phase. 

Stainiess steei high-pressure equiiibrium ceii (64.33 mb) 

Sampie iine for extracting fluid phase sampies and venting vaive 

Sampie iine for extracting light phase samples and venting valve 

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