Reactivity of the Functional Groups in Functional Polymers (Use of T-for-H Exchange Reaction)

Abstract

In order to reveal the reactivity of several functional polymers, the following two experiments were carried out : (1) observing the hydrogen-isotope exchange reaction (T-for-H exchange reaction) between one of T-labeled functional polymers and 0.500 mol·1^-1 aniline dissolved in p-xylene, (2) observing the degree of the T dispersed from the surface area of the polymer under the several conditions. Consequently, the following six matters have been quantitatively obtained. (1) The T-for-H exchange reaction occurred between each T-labeled polymer and aniline, and is more predominant than other chemical reactions within the range of 50 - 90°C. (2) The reactivity of the polymers are strongly affected by their matrix structures. (3) The degree of the T dispersed from the surface area of each T-labeled polymer is hardly affected by humidity. (4) The higher the temperature is, the larger is the degree of the T dispersed from the surface area. (5) At the same temperature, the degree of the T dispersed from the surface area of each polymer is strongly affected by the physical form of the polymer even if the polymer has the same functional group as the others, and the T existing in the surface area of a T-labeled glassy polymer is less dispersed than that of a porous one. (6) The degree of the T dispersed from the surface area of a T-labeled polymer is small when the degree of the polymerization of the polymer is high.