Inhibiting Effect of Radical Polymerization of Vinyl Monomers(XⅧ)──Studies on Inhibiting Effect of ATSCPOs in Corporated with Common Inhibitors on MMA

Abstract

Abstract: The inhibiting effect of 1-arylformyl-4[4'-(2,2,6,6-tetramethyl piperidine)-1-oxy thiosemicarbazide(ATSCPOs)incorporated with common inhibitor(CIH), such as hydroquinone(HQ),1,4-benzoquione(BQ),N,N'-bisethylhydroxylamino(DEHA)and phenothiazone(PT) on radical polymerization of methyl methacrylate under the initiation of AIBNhas been studied by dilatometric method.The results showed that when ATCPO/CIHequalized to 5: 1,inhibiting effect of these prescription became more prominent than ATSCPOs or CIHused as inhibitor alone, but ATSCPOs-BQ composition, For example, test indicated that the inductive period of polymerization(t_i)was extended, the R_p after t_i, were decreased and the M_w of polymethylmethacrylate has been turned into smallish.The appearance revealed that there is a synergistic action between ATSCPOs and CHI.On the basis of retardation coefficient(K) and inhibiting factor(F), relative inhibiting reactivities of several ATSCPOs were determined as in the following order: ATSCPOs-HQ>ATSCPOs-PT>ATSCPOs-DAHA≈ATSCPOs-BQ

Key words: Inhibitor, Radical polymerization, 1-Arylformyl-4-(4'-(2,2,6,6-tetramethyl piperidine)-1-oxy]thiosemicarbazides, Methyl methacrylate

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ZHANG Zi-Yi, WEI Xiu-Ying, WANG Tie-Jun. Inhibiting Effect of Radical Polymerization of Vinyl Monomers(XⅧ)──Studies on Inhibiting Effect of ATSCPOs in Corporated with Common Inhibitors on MMA[J]. Chem. J. Chinese Universities, 1994, 15(3): 466.

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Inhibiting Effect of Radical Polymerization of Vinyl Monomers(XⅧ)──Studies on Inhibiting Effect of ATSCPOs in Corporated with Common Inhibitors on MMA

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