**2.5 Determination of the particle size in the dispersion**

The average particle size in the dispersions G8, G9 and G10 in Table 3 was determined by quasielastic laser light scattering with a Malvern Zetasizer (Malvern Instruments Limited, England). The dispersions were diluted by 300 times in water before the measurement. The size determination was repeated 3 times/sample. The average size and the size distribution were estimated from the log-normal size distribution function as shown previously (Chung et al., 2001)
