
94 Engineering of Polymers and Chemical Complexity
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-0.2
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
R
a
m.10
3
1
2
3
4
FIGURE 3 The dependence of grain (R
) on the removed layer mass ( m, moles) at different
crystallinity %: 5(1); 30(2); 40(3); 50(4) [6].
According to one of existing explanations, the roughness on a surface at pickling
will be derived at preferred destroying of an amorphous part, where the miscibility of
water, alkalis, salts is rather great, and naked crystal chips form observed jaggings.
Apparently, such mechanism of pickling can be carried out, but in a case PETP it is not
...