X-ray diffraction in studiem on the solid-state radiation-induced polymerization of acrylamide and its N-tert-alkylsubstituted derivatives. Part I
During the solid-state radiation-induced polymerization of acrylamide and its N-tert-alkylderivatives (N-tert-butyl-,N-tert-amyl-,N-tert-hexyl-, and N-tert-heptylacryloamides), an amorphous polymer is formed from a crystalline monomer and thus, the degree of monomer conversion can be followed by the methods of X-ray diffractometry. The determination of the degree of conversion of the above mentioned monomers on the basis of X-ray measurements of the content of amorphous phase in the material being polymerized has been attempted. A diversified charakter of this phase and transformations taking part inside polymer under the effect of g-irradiation (cross-linking, degradation) make it difficult to find a standard of the completely amorphous phase, what makes the results vague. The values of the degree of conversion determined by the X-ray method are in between those obtained by the gravimetric method and those from X-ray measurements of the content of crystalline monomer in the sample.
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