Abstract
It was demonstrated that the liquid-phase polymerization of CMA is more rapid by several orders of magnitude than that in the solid state. In monoclinic crystals of CMA, preconditions of a topochemical process can be established but polymerization has a heterogeneous character. The heterogeneous polymerization shows high activation energy and leads to the appearance of a new phase demonstrated by X-ray diffractometry. The amount of the new phase increases more rapidly than the conversion. The role of the crystalline system in the reaction is supported by the observation that the crystalline particles are used up just at the conversion limit. For CVE, topochemical conditions are not fulfilled, thus the solid-state polymerization cannot start.
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