Kinetic and ESR studies on radical polymerization of methyl methacrylate in the presence of fullerene

Seno, Makiko; Fukunaga, Hironori; Sato, Tsuneyuki

doi:10.1002/(sici)1099-0518(19981130)36:16<2905::aid-pola9>3.3.co;2-0

Cited by 4 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The observed spectrum ( g-value ϭ 2.003) is nearly same as that of the fullerene radical (C 60 •) formed in the MMA polymerization with MAIB as reported previously. 19 So, the spectrum is assignable to fullerene radical derived from the reaction of C 60 with poly(VAc) radicals or the primary radicals from MAIB. The concentration of C 60 • was determined at different MAIB concentrations at 60°C by ESR and is shown as a function of time in Figure 9, where the concentrations of VAc and C 60 were 5.42 and 2.08 ϫ 10 Ϫ4 mol/L, respectively.…”

Section: Esr Study On the Polymerization Of Vac With Maib In Benzene mentioning

confidence: 99%

“…12,15 There are also kinetic studies on the effect of C 60 on radical polymerizations of St 10,12,15,17 and MMA. 15,18,19 C 60 serves as a retarder for the MMA polymerization initiated with azoinitiators such as dimethyl 2,2Јazobisisobutyrate (MAIB) 19 and azobisisobutyronitrile (AIBN), 15,18 whereas it serves as an inhibitor for the St polymerization initiated with AIBN 12 and also with benzoyl peroxide. 17 Vinyl acetate (VAc), a nonconjugative monomer, is well known to show often different polymerization behaviors from those of conjugative monomers like MMA and St.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of fullerene on radical polymerization of vinyl acetate

Seno

Maeda

Sato

2000

J. Polym. Sci. A Polym. Chem.

Self Cite

View full text Add to dashboard Cite

The effect of fullerene (C 60 ) on the radical polymerization of vinyl acetate (VAc) with dimethyl 2,2Ј-azobisisobutyrate (MAIB) in benzene was investigated kinetically and by means of ESR. C 60 was found to act as an effective inhibitor in the present polymerization. All C 60 molecules used were incorporated into poly(VAc) during polymerization. The relationship of induction period and initiation rate reveals that a C 60 molecule can trap 15 radicals formed in the polymerization system. The polymerization rate (R p ) after the induction period is given by R p ϭ k [MAIB] 0.6 [VAc] 2.0 (60°C), which is similar to that observed in the absence of C 60 . Stable fullerene radical (C 60 •) was observed in the polymerization system by ESR. The C 60 • concentration increased with time and was then saturated. The saturation time well corresponds to the induction period observed in the polymerization. About 20% of C 60 molecules added could survive as stable C 60 •.

show abstract

Section: Esr Study On the Polymerization Of Vac With Maib In Benzene mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of fullerene on radical polymerization of vinyl acetate

Seno

Maeda

Sato

2000

J. Polym. Sci. A Polym. Chem.

Self Cite

View full text Add to dashboard Cite

show abstract

“…For instance, fullerene C 60 effectively inhibits the free radical polymerization of styrene [17][18][19][20][21], methyl methacrylate [17,22,23], vinyl acetate [24] and acrylonitrile [25].…”

Section: Introductionmentioning

confidence: 99%

Radical scavenging efficiency of different fullerenes C60–C70 and fullerene soot

Zeynalov

Allen

Salmanova

2009

Polymer Degradation and Stability

View full text Add to dashboard Cite

“…Thus, diacetylenes do not suffer from the addition of vinyl propagating radicals under the normal polymerization conditions. This behavior is different from other electron acceptors, such as fullerenes and carbon nanotubes, 18,19 in which the ESR signals observed in the polymerization of vinyl monomers [20][21][22] correspond to the ESR signals of fullerene and nanotube radicals formed by the addition of propagating radicals.…”

Section: Resultsmentioning

confidence: 60%