Figures Experimental” section contents

The dried block copolymer-coated titanium dioxide particles were dispersed in toluene (secondary dispersions) and subjected to the settling test described in the experimental section. In the first few experiments, dispersions with 9.1% solids were prepared later, under standardized conditions, the solids content of the dispersions was 10 wt %. Adsorption and settling data obtained under these conditions are given in Table I. The settling data of the first three samples of this table are plotted in Figure 2. 

Fig. 38, the apparent densities decrease with increasing wood powder content. The effect of molecular weight of ethylene glycol was more prominent in KL polyols than in LS whose results are not shown here. Apparent density of veneer was 0.54 gcm and that of composites 1.2gcm accordingly, apparent densities of the PU composites filled with wood powder sandwiched by two veneer plates were smaller than those of PU composites. Figure 39 shows apparent density obtained by two samples, i.e. PU composite with veneer plates and those that were prepared directly without plates in the same procedure as described in the experimental section. KLD was used for the above two series of samples. Calculated values assuming the summation of each volume of venire plates and sandwiched composite are also shown in Fig. 39. It is clearly seen that calculated values are almost similar to those of samples prepared without plates. These results indicate, foaming reaction took place regardless of veneer plates.

The degree of hydration of hydronium has relevance to structural diffusion as it requires the presence of Eigen ion (HsO + 3 H2O), which is discussed in detail in Section III. Figure 14 supports the experimental observation of low proton conductivity at low water contents due in part to the reduction of stractural diffusion because the probability of finding HsO surrounded by sufficient H2O molecules is lower. Figure 14 shows that at intermediate water contents, the probabilities for hydronium ions hydrated with three or more H2O molecules are higher in Nafion than in... 

The amount of bound rubber depends on carbon black loading (Figure 7.20). Experimental studies show that small additions of carbon black (below 40 phr) obey different relationship than larger additions. The cross-section of both relationships gives a critical coherent loading. This data also shows that bound rubber increases rapidly above 30 phr. Above 80 phr, the bound rubber content begins to level off. NMR studies show a very restricted chain mobility above 80 phr. ... 

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