Weighted concentration of effective strands

Figure 3. Weighted concentration of effective strands for a typical polyol-urethane coating using the kinetics of Figure 2.

Figure 4. Weighted concentration of effective strands versus humidity at constant cure time for different initial ratios of isocyanate to hydroxy. The cure time is chosen so that at equal isocyanate and hydroxy and H=0, the extent of reaction is 85%.

Figure 5. Weighted concentration of effective strands versus bake temperature for a typical high solids polyol crosslinked with hexamethoxymethylmelamine. The ratio of methoxy to hydroxy groups is given by "R". For the dashed lines, the extent of methoxy self-condensation is assumed to be zero. The solid lines use the self-condensation data of T. Nakamichi, Prog. Org. Coat., 14, 23 (1986).

THIS CROSSLINK DENSITY IS CALLED THE WEIGHTED CONCENTRATION OF" EFFECTIVE STRANDS. ... 

PRINT "THE WEIGHT CONCENTRATION OF EFFECTIVE STRANDS -" LINK 3350 PRINT 3360 PRINT 3370 GOTO 2220... 

Effect of crosslinker concentration on gel pore structure in a 6 %T crosslinked polyacrylamide hydrogel. Evolution of (a) crosslink strand molecular weight, and (b) average pore size (L/2) estimated from Equation 5 are plotted for crosshnker concentrations ranging from 1-8 %C. Polymerization conditions T=20 °C, UV intensity = 5 W/ml. 

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