A polarographic study of the effect of dioxan-water solvent systems on copolymerization of methyl methacrylate and methacrylic acid

Bezuglyi, V. D.; Voskresenskaya, I.B.; Alekseyeva, T.A.; Gerner, M.M.

doi:10.1016/0032-3950(72)90230-4

Cited by 3 publications

(3 citation statements)

References 5 publications

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“…In general, the reactivity of ionizable monomers is strongly influenced by the nature of the medium (notably its polarity and proton donor or proton acceptor abilities) and by the degree of dissociation of the ionic groups (and so by the pH). There is to our knowledge only two articles reporting the reactivity ratios of MAA (monomer 1) with MMA (monomer 2) in water. , In Bezuglyi et al, the reactivity ratios were reported to be r 1 = 0.43 and r 2 = 2.61, while Daswani et al used the chemical composition of the very short oligomers formed at very low conversions during surfactant-free emulsion copolymerization (as determined by MALDI-ToF MS analysis) and estimated the apparent reactivity ratios to be r 1 = 2.74 and r 2 = 3.99 at chain length 6. Note that these values are very different from reactivity ratios reported in bulk .…”

Section: Resultsmentioning

confidence: 99%

“…Although there are a lot of reactivity ratios reported in the literature under different reaction conditions, examples of reactivity ratios determined in the aqueous phase of emulsion polymerization are scarce. According to the literature, reactivity ratios for MAA/MMA , and MAA/BA copolymerizations in water indicate that both MMA and BA tend to polymerize faster than MAA, resulting in the formation of MMA- or BA-rich oligomers during the nucleation step, which does not favor a strong interaction of IO nanoparticles with the resulting copolymer chains. Most primary particles are thus created by the collapse of MAA-poor growing polymer chains, which does not favor the stabilization of these particles leading to some coalescence.…”

Section: Resultsmentioning

confidence: 99%

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Surfactant-Free Emulsion Polymerization Stabilized by Ultrasmall Superparamagnetic Iron Oxide Particles Using Acrylic Acid or Methacrylic Acid as Auxiliary Comonomers

Dugas

Lansalot

et al. 2016

Macromolecules

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Iron oxide (IO)-based composite latex particles with a patchy IO overlayer were successfully prepared by Pickering emulsion polymerization of acrylic monomers and/or styrene using acrylic acid or methacrylic acid as auxiliary comonomers. The ultrasmall IO particles adsorbed at the latex surface and played the role of a solid stabilizer. The influence of the synthesis conditions on the composite particle size, polymerization kinetics, IO incorporation efficiency and particle morphology was studied. Thermogravimetric analysis indicated that the efficiency of iron oxide incorporation was improved with increasing the suspension pH, the amount of auxiliary comonomer or the IO content, and reached ca. 90% under optimized conditions. Reducing the initial iron oxide concentration at constant monomer concentration led to an increased particle size and a reduced colloid stability, indicating that the magnetic nanoparticles stabilized the colloidal nanocomposites. Transmission electron microscopy studies confirmed the presence of iron oxide at the particle surface. In the light of these results, a tentative mechanism for Pickering emulsion polymerization using IO nanoparticles as solid stabilizer in the presence of (meth)acrylic acid auxiliary comonomers was proposed.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Surfactant-Free Emulsion Polymerization Stabilized by Ultrasmall Superparamagnetic Iron Oxide Particles Using Acrylic Acid or Methacrylic Acid as Auxiliary Comonomers

Dugas

Lansalot

et al. 2016

Macromolecules

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“…The Polarographic method was used to determine esters and cellulose type plastics (99), coumarins (1162), and to follow the copolymerization of methyl methacrylate with methacrylic acid (102). The kinetics of polymerization of propargyl acrylate and itaconates was studied polarographically (923).…”

Section: Carboxylic Acids Esters Amides and Nitrilesmentioning

confidence: 99%

Organic polarography

Pietrzyk¹

1974

Anal. Chem.

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Chemical Titles, and readily available journals ending November 30, 1973. This period has seen a continued growth in the use of polarography and related electrochemical techniques to follow chemical reactions and to supplement other physical and spectral measurements for purposes of characterization. Interest in applications toward biochemical and pharmaceutical problems has also increased. There also appears to be renewed interest in utilizing polarographic and related electrochemical data to predict and follow organoelectrochemical synthesis.In this review the symbols cv, dc, ac, and op are used to identify cyclic voltammetry, direct current polarography, alternating current polarography, and oscillographic polarography, respectively. Also, no attempt was made to list all organic polarographic references.

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Investigation of the copolymerization of methacrylic acid with methyl acrylate and butyl methacrylate in water-dioxan solvent systems

Bezuglyi¹,

Voskresenskaya²,

Alekseyeva³

et al. 1975

Polymer Science U.S.S.R.

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A polarographic study of the effect of dioxan-water solvent systems on copolymerization of methyl methacrylate and methacrylic acid

Cited by 3 publications

References 5 publications

Surfactant-Free Emulsion Polymerization Stabilized by Ultrasmall Superparamagnetic Iron Oxide Particles Using Acrylic Acid or Methacrylic Acid as Auxiliary Comonomers

Surfactant-Free Emulsion Polymerization Stabilized by Ultrasmall Superparamagnetic Iron Oxide Particles Using Acrylic Acid or Methacrylic Acid as Auxiliary Comonomers

Organic polarography

Investigation of the copolymerization of methacrylic acid with methyl acrylate and butyl methacrylate in water-dioxan solvent systems

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