Table 2: Diffusion coefficients of the three nTiO2 carriers in nitrile rubber, latex, and neoprene. Values were obtained by mass gain based upon (5).

Diffusion coefficients (10−14 m²·s−1)
WaterEGPG

Nitrile rubber1.60.70.5
Latex1.41.40.4
Neoprene10.46.91.5