Free-radical polymerization of N-vinylpyrrolidone under the conditions of secondary inhibition
В. О. КудышкинInstitute of Polymer Chemistry and Physics, Academy of Sciences of Uzbekistan, ul. A. Kadyri 7b, Tashkent, 100128, UzbekistanС. Ш. РашидоваInstitute of Polymer Chemistry and Physics, Academy of Sciences of Uzbekistan, ul. A. Kadyri 7b, Tashkent, 100128, UzbekistanA. V. SurdinaFaculty of Chemistry, Moscow State University, Leninskie gory, Moscow, 119991, RussiaM. Yu. ZaremskiFaculty of Chemistry, Moscow State University, Leninskie gory, Moscow, 119991, RussiaВ. Б. ГолубевFaculty of Chemistry, Moscow State University, Leninskie gory, Moscow, 119991, Russia
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The polymerization of N-vinylpyrrolidone has been studied in the presence of the stable radical 2,2,6,6-tetramethyl-1-piperidinyloxy. It has been shown that at 120°C the polymerization proceeds via the irreversible inhibition mechanism, while, at 60°C, secondary inhibition occurs in the system during the postinduction period. This effect may be used for regulation of the molecular-mass characteristics of polymers.
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