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J. Żurakowska-Orszagh, J. Bartnik, A. Chajewski, K. Mirowski


X-ray diffraction in studiem on the solid-state radiation-induced polymerization of acrylamide and its N-tert-alkylsubstituted derivatives. Part II


Polimery 1984, No 3, 100


DOI: dx.doi.org/10.14314/polimery.1984.100

Summary

The solid-phase radiation-induced polymerization of above mentioned crystalline monomers leads to the formation of amorphous polymers. Therefore, it is possible to investigate into the monomer conversion and polymer formation by means of X-ray diffractometry. Such a procedure is, however, complicated by the fact that at low conversion an abnormal increase in the degree of crystallinity Is observed and that a standard of the completely amorphous phase is to be selected. An attempt to solve these problems with­out the necessity for taking into account the X-ray charac­teristics of monomer and polymer by the adoption of an extrapolation method in the system: peak surface area — height of halo, has been presented. Such a method of de­termination of the conversion is particularly suitable in the range of conversion equal to 5—90% and is independent from the gravimetric measurements.

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