Experimental procedure seed preparation

The experimental procedure was as follows. One litre of supersaturated aqueous solution was prepared, of which 0.8 was poured Into the crystallizer. After a constant temperature (of 298.2 K) was attained, the solution concentration was determined, and a seed crystal (0.59-0.71 mm) was put Into the solution and was allowed to grow for either 600 or 900 s. The crystal was then taken out of the crystallizer and put Into a 50 ml beaker In which a small quantity of alcohol was placed. The crystal was removed from the beaker and dried In the air for a few mlnltes, then Its weight and surface area were measured. The same crystal was again placed Into the crystallizer and allowed to resume growth. 

The core-shell particles were prepared by seeded semi-continuous emulsion polymerization under monomer-starved conditions. A detailed experimental procedure for similar latices is given by Winnik et al. [20] and Kruger et al. [21]. The seed was prepared by batch emulsion polymerization. After synthesizing the PBMA core a highly crosslinked PnBA-shell with MAA comonomer... 

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