Radical polymerization of <i>n</i>‐butyl methacrylate initiated by stibonium ylide

Srivastava, Sumita; Srivastava, A. K.

doi:10.1002/app.25361

Cited by 4 publications

(3 citation statements)

References 30 publications

(10 reference statements)

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“…The CH 2 rocking particularly in the n-butyl group is assigned to the peak at 740 cm −1 . The results are corroborated with the reported IR analysis of poly BMA [36].…”

Section: Characterization Of Fullerene (C 60 )-Bma Copolymerssupporting

confidence: 95%

Radical copolymerization of fullerene (C₆₀) and n‐butyl methacrylate (BMA) using triphenylbismuthonium ylide and characterization of C₆₀–BMA copolymers

Katiyar¹,

Bag

Nigam³

2011

Int J of Chemical Kinetics

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Radical copolymerization of fullerene (C 60 ) and n-butyl methacrylate (BMA) has been carried out using triphenylbismuthonium ylide as an initiator at 70 • C for 4 h in a dilatometer under nitrogen atmosphere. The kinetic expression of the polymerization is R p α [Ylide] 0.5 [C 60 ] −1.0 [BMA] 1.2 , which is similar to that expected for ideal kinetics. The rate of polymerization increases with an increase in the concentration of initiator and BMA. However, it decreases with an increase in the concentration of fullerene. Fullerene acts as radical scavengers causing retardation in polymerization.

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“…The CH 2 rocking particularly in the n-butyl group is assigned to the peak at 740 cm −1 . The results are corroborated with the reported IR analysis of poly BMA [36].…”

Section: Characterization Of Fullerene (C 60 )-Bma Copolymerssupporting

confidence: 95%

Radical copolymerization of fullerene (C₆₀) and n‐butyl methacrylate (BMA) using triphenylbismuthonium ylide and characterization of C₆₀–BMA copolymers

Katiyar¹,

Bag

Nigam³

2011

Int J of Chemical Kinetics

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“…The absorption frequencies observed at 2690 cm −1 and 2874 cm −1 are the CH stretching vibration of CH 3 and CH 2 group. Further the C–O stretching vibration and the wagging vibrations of CH are appeared at 1060 and 1261 cm −1 , respectively . However, the spectrum of PBMA, with 5 and 10 wt.% of Sm 3+ ‐doped TiO 2 shows a characteristic strong peak at 665 cm −1 , verified the presence of metal oxide nanoparticles in the polymer chain.…”

Section: Resultsmentioning

confidence: 95%

Synthesis by In Situ‐Free Radical Polymerization, Characterization, and Properties of Poly (n‐butyl methacrylate)/Samarium‐Doped Titanium Dioxide Nanoparticles Composites

et al. 2016

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Using free radical polymerization process a series of samarium-doped titanium dioxide (Sm 3+ -doped TiO 2 ) nanoparticles containing poly (n-butyl methacrylate) (PBMA) composites were synthesized. The fabricated samples were characterized by XPS, FTIR, UV, XRD, DSC, TGA, flame retardancy studies, and impedance analyser. The shift in FTIR peak of the nanocomposites to higher wavenumber indicates the interfacial interaction between nanoparticles and PBMA. The UV spectra indicated that the metal oxide nanoparticles could enhances the interfacial interaction in the polymer composites. SEM images showed the uniform dispersion of nanoparticles into the macromolecular chain of PBMA. XRD patterns of the composites indicated the ordered arrangement of nanoparticles within the polymer and the regularity of the chain improved by the increase in concentration of nanoparticles. Better flame resistance and thermal stability were attained by the addition of nanoparticles. The flame retardancy and thermal stability of the composites were improved with the increase in concentration of Sm 3+ -doped TiO 2 . The glass transition temperatures of the composites were much enhanced by the increase in weight percentage of nano-filler. The AC conductivity, dielectric constant and dielectric loss tangent of the composites were higher than the pure PBMA and these properties enhanced with the loading of nanoparticles up to 7 wt.% and thereafter the values decreases.

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“…Ylides can be used as initiator, accelerator, retardant or chain-transfer agent during the polymerization [29][30][31][32][33]. The fullerene functionalized polymer is also reported during the polymerization of methyl methacrylate initiated by ylide [34].…”

Section: Introductionmentioning

confidence: 99%

Kinetics of Fullerene (C60) Inhibition in Polymerization of Vinyl Acetate (VA) Using Bismuthonium Ylide as Initiator

Singh

Srivastava

Upadhyay

2012

Designed Monomers and Polymers

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The kinetics of polymerization of vinyl acetate (VA) in presence of fullerene (C 60 ) have been studied using triphenylbismuthonium 1,2,3,4-tetraphenylcyclopentadiene ylide as initiator in dioxane at 80 ± 0.1°C under the blanket of nitrogen. The rate of polymerization (R p ) may be represented as5 , indicating non-ideal kinetics for the polymerization. The energy of activation for the polymerization was found to be 46.2 kJ/mol. The synthesized polymer has been characterized by Fourier transform infrared spectroscopy (FT-IR), proton ( 1 H-NMR) and Carbon-13 nuclear magnetic resonance ( 13 C-NMR) spectroscopic analysis. The molecular weight of the polymer, as determined by gelpermeation chromatographic (GPC) analysis, reduced as the C 60 concentration in the polymer increases. C 60 competed with vinyl acetate for free radicals, produced by ylide, and acts as a radical inhibitor. A part of fullerene was also inserted into the final polymer.

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Radical polymerization of n‐butyl methacrylate initiated by stibonium ylide

Cited by 4 publications

References 30 publications

Radical copolymerization of fullerene (C₆₀) and n‐butyl methacrylate (BMA) using triphenylbismuthonium ylide and characterization of C₆₀–BMA copolymers

Radical copolymerization of fullerene (C₆₀) and n‐butyl methacrylate (BMA) using triphenylbismuthonium ylide and characterization of C₆₀–BMA copolymers

Synthesis by In Situ‐Free Radical Polymerization, Characterization, and Properties of Poly (n‐butyl methacrylate)/Samarium‐Doped Titanium Dioxide Nanoparticles Composites

Kinetics of Fullerene (C60) Inhibition in Polymerization of Vinyl Acetate (VA) Using Bismuthonium Ylide as Initiator

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Radical polymerization of n‐butyl methacrylate initiated by stibonium ylide

Cited by 4 publications

References 30 publications

Radical copolymerization of fullerene (C60) and n‐butyl methacrylate (BMA) using triphenylbismuthonium ylide and characterization of C60–BMA copolymers

Radical copolymerization of fullerene (C60) and n‐butyl methacrylate (BMA) using triphenylbismuthonium ylide and characterization of C60–BMA copolymers

Synthesis by In Situ‐Free Radical Polymerization, Characterization, and Properties of Poly (n‐butyl methacrylate)/Samarium‐Doped Titanium Dioxide Nanoparticles Composites

Kinetics of Fullerene (C60) Inhibition in Polymerization of Vinyl Acetate (VA) Using Bismuthonium Ylide as Initiator

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Radical copolymerization of fullerene (C₆₀) and n‐butyl methacrylate (BMA) using triphenylbismuthonium ylide and characterization of C₆₀–BMA copolymers

Radical copolymerization of fullerene (C₆₀) and n‐butyl methacrylate (BMA) using triphenylbismuthonium ylide and characterization of C₆₀–BMA copolymers