Chemistry Reference
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Figure 2.41. Kinetic of intrinsic viscosity change at ultra-violet irradiation of PVA: a) -undyed; b)-dyed
I; c)-dyed II.
Thus, we may come to a conclusion that dyeing of polymers, containing free OH-groups,
by active dyes considerably improves their thermal and photooxidative stability; this is
connected with substitution of hydrogen labile atom by more volumetric molecule.
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