INHIBITING EFFECT OF RADICAL POLYMERIZATION OF VINYL MONOMERS ⅩⅦ.INHIBITING EFFECTS OF 1-ACYL FORMYL-4[4′-(2,2,6,6-TETRAMETHYL PIPERIDINE)]THIOSEMICARBAZIDES ON POLYMERIZATION OF MMA

Chinese Journal of Applied Chemistry ›› 1993, Vol. 0 ›› Issue (3): 66-67.

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INHIBITING EFFECT OF RADICAL POLYMERIZATION OF VINYL MONOMERS ⅩⅦ.INHIBITING EFFECTS OF 1-ACYL FORMYL-4[4′-(2,2,6,6-TETRAMETHYL PIPERIDINE)]THIOSEMICARBAZIDES ON POLYMERIZATION OF MMA

Zhang Ziyi, Wei Xiuying, Shi Jihong

Department of Chemistry, Lanzhou University, 730000 Lanzhou

Received:1992-05-28 Revised:1993-01-05 Published:1993-06-10 Online:1993-06-10

Abstract

Abstract: The inhibiting effects of five 1-acyl formyl-4-[4′-(2, 2, 6, 6-tetramethyl piperidine)]thiosemicarbazides (ATSCPO) on radical polymerization of methyl methaerylate(MMA), initiated by azobisisobutyronitrile have been studied by dilatometric method. The inhibiting effects of the ATSCPO were only one third of that of TMHPO (2,2,6,6-tetramethyl-4-hydroxyl-piperidine-1-oxy) even used in the amount of 9.98×10^-3% to the amount of MMA monomer. The effects of ATSCPO on the conversion and rate of polymerization as well as the molecular weight of polymer were briefly discussed.

Key words: acylformyl tetramethyl piperidine thiosemicarbazide, inhibiting effect, methyl methacrylate, radical polymerization

Zhang Ziyi, Wei Xiuying, Shi Jihong. INHIBITING EFFECT OF RADICAL POLYMERIZATION OF VINYL MONOMERS ⅩⅦ.INHIBITING EFFECTS OF 1-ACYL FORMYL-4[4′-(2,2,6,6-TETRAMETHYL PIPERIDINE)]THIOSEMICARBAZIDES ON POLYMERIZATION OF MMA[J]. Chinese Journal of Applied Chemistry, 1993, 0(3): 66-67.

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INHIBITING EFFECT OF RADICAL POLYMERIZATION OF VINYL MONOMERS ⅩⅦ.INHIBITING EFFECTS OF 1-ACYL FORMYL-4[4′-(2,2,6,6-TETRAMETHYL PIPERIDINE)]THIOSEMICARBAZIDES ON POLYMERIZATION OF MMA

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