Formation and reconstruction of sorption centers in isotactic polypropylene

Properties of a polymer depend not only on its composition and molecular ma ss but also on the method of its preparation and on subsequent treatment of the polymer sample. To understand this phenomenon, the authors studied the effect of the rate of sedimentation of isotactic polypropylene from soluti on on its sorption capacity toward the low-molecular compound phenyl-beta-n aphthylamine and on the antioxidant effectivity of this compound at polypro pylene melt. The data obtained may be explained by taking into account the topological disorder in the arrangement of the polymer chains. Reversible variations of the polymer properties caused by the addition of p henyl-beta-naphthylamine were observed.