Free radical copolymerization of furfuryl methacrylate and N-vinylpyrrolidone

Zaldívar, Dionisio; Péniche, Carlos; Bulay, Anna; Román, Julio San

doi:10.1016/0032-3861(92)90423-t

Cited by 25 publications

(5 citation statements)

References 6 publications

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“…These values of reactivity ratios are close to those described by Reddy et al, and they are in the range of other copolymeric pairs methacrylates−VP (i.e., furfuryl methacrylate−VP, r FM = 3.92 and r VP = 0.004; methyl methacrylate−VP, r MMA = 5 and r VP = 0.02; glycidil methacrylate−VP, r GLI = 3.8 and r VP = 0.03; phenyl methacrylate−VP, r PHM = 4.49 and r VP = 0.05). For these systems an essential random copolymer rich in HEMA units can be expected at relatively low conversion, but at high conversion most of the residual VP monomer molecules polymerize, mainly in the last steps of the reaction, giving rise to copolymer chains with relatively long blocks of VP units and a distribution of sequences that depends on the average composition of the reaction medium.…”

Section: Resultssupporting

confidence: 90%

Micellar Electrokinetic Chromatography Applied to Copolymer Systems with Heterogeneous Distribution

Gallardo¹,

Lemus²,

Román³

et al. 1999

Macromolecules

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The kinetic analysis and the characterization of copolymer systems at high conversion based on the free radical polymerization of N-vinylpyrrolidone, VP, and 2-hydroxyethyl methacrylate, HEMA, is analyzed on the basis of the reactivity ratios of these monomers as obtained by the Tidwell and Mortimer nonlinear method. Characterization of copolymers prepared at different conversion degrees was carried out by using micellar electrokinetic chromatography, MEKC, as well as by size exclusion chromatography, SEC. The experimental results obtained demonstrate a noticeable change of the composition of copolymer chains with the conversion degree and a good agreement between the approximation of the Skeist's kinetic treatment and the experimental data. Both MEKC and SEC provide valuable complementary information with respect to the average composition of copolymer chains and their macromolecular size and size distribution. To our knowledge this is the first time that MEKC has been applied to the characterization of high molecular weight copolymer systems.

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Section: Resultssupporting

confidence: 90%

Micellar Electrokinetic Chromatography Applied to Copolymer Systems with Heterogeneous Distribution

Gallardo¹,

Lemus²,

Román³

et al. 1999

Macromolecules

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“…The situation developed when the monomer reactivity ratios differ greatly from one another has been extensively described for different systems such as copolymerization of vinyl acetate28–33 and vinylpyrrolidone34–44 with meth(acrylic) monomers.…”

Section: Resultsmentioning

confidence: 99%

Copolymers of acrylic acid with 2‐acryloyloxyethyl 2,4‐dichlorophenoxyacetate: Synthesis and herbicide release

Sánchez‐Chaves

2006

J of Applied Polymer Sci

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Free-radical copolymerization of acrylic acid with 2-acryloyloxyethyl 2,4-dichlorophenoxyacetate using 1.0 mol/L 1,4-dioxane solution and 1.5 Â 10 À2 mol/L of 2,2 0 azobisisobutyronitrile as initiator has been carried out at 508C. In addition to low conversion solution experiments performed to estimate the monomer reactivity ratios, three different copolymerizations over the whole range of conversions have been made. Theoretical values of cumulative copolymer composition, determined by the Mayo-Lewis terminal model, have been correlated with those experimentally obtained. Finally, the herbicide release in three different aqueous pH buffer solutions has been evaluated in heterogeneous phase.

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“…The columns were calibrated by using purposely prepared narrow-distribution PVP standards. [12] Furfuryl methacrylate N-Vinyl-2-pyrrolidone 3.92 0.004 [13] NMR spectra were recorded with a Bruker AC-400 FT-NMR spectometer at 400 MHz using Bruker software. Deuterated chloroform (CDCl 3 ) was used as an internal standard and the operating temperature was 298 K.…”

Section: Charaterizationmentioning

confidence: 99%

“…The white powder obtained was purified by continuous extraction with dry diethylether in a Soxhlet apparatus. 13 …”

Section: Synthesis Of Vp Macromersmentioning

confidence: 99%

New MethacryloxyN-Vinyl-2-pyrrolidinone- and Lactone-Based Macromers

Tarabić

Ranucci²

2001

Macromol. Biosci.

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Free radical copolymerization of furfuryl methacrylate and N-vinylpyrrolidone

Cited by 25 publications

References 6 publications

Micellar Electrokinetic Chromatography Applied to Copolymer Systems with Heterogeneous Distribution

Micellar Electrokinetic Chromatography Applied to Copolymer Systems with Heterogeneous Distribution

Copolymers of acrylic acid with 2‐acryloyloxyethyl 2,4‐dichlorophenoxyacetate: Synthesis and herbicide release

New MethacryloxyN-Vinyl-2-pyrrolidinone- and Lactone-Based Macromers

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