It could be also noticed thatthe ad

It could be also noticed that
the addition of ammonium chloride at the levels above
0.6–1.0% is not as much effective, which probably results
in conditions when the most of the reactive groups
of the adhesive were activated and when further addition
of ammonium chloride only slightly affects the peak
temperatures. Figure 2 also shows that the UF1 adhesive
has lower peak temperatures in regard to UF2,
suggesting to its higher reactivity.