Copolymerization of acrylonitrile. I. Copolymerization with styrene derivatives containing nitrile groups in the side chain

Ronel, Samuel H.; Kohn, David H.

doi:10.1002/pol.1969.150070817

Cited by 27 publications

(6 citation statements)

References 11 publications

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“…It is known1,2 that BMN does not homopolymerize under radical reaction conditions, but copolymerizes with styrene1 and acrylonitrile. 2 We found now, that BMN does copolymerize also with VAC to give a powder-like copolymer. Table I presents the result of the bulk copolymerization of BMN and VAC by radical initiation.…”

Section: Resultsmentioning

confidence: 57%

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Copolymerization of vinyl acetate with benzylidenemalononitrile

Kharas

Kohn

1984

J. Polym. Sci. Polym. Chem. Ed.

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Vinyl acetate was copolymerized with benzylidenemalononitrile in bulk by radical initiation at 80°C up to low conversions. Alternating copolymers were formed over a wide range of monomer feed ratios. The copolymerization parameters were determined by the conventional scheme. The copolymers were characterized by IR, proton, and 13C spectroscopy and their basic properties, solubility, viscosity, and thermal behavior were determined.

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Section: Resultsmentioning

confidence: 57%

“…Examining the possible influence of the penultimate unit, with r2 = rk = 0 [Eq. (2)]6 (2) was applied to the data of Table I. Yet a negative value of rl was obtained (rl = -0.2 and r; = 0.2) and thus no effect of the penultimate unit had to be considered.…”

Section: Resultsmentioning

confidence: 99%

Copolymerization of vinyl acetate with benzylidenemalononitrile

Kharas

Kohn

1984

J. Polym. Sci. Polym. Chem. Ed.

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“…The glass transition temperature of the copolymers wfts determined according to the method of Edgar and Ellery" on heat-molded specimens in the manner as described before. 12 The values are given in Figure 11.…”

Section: Glass Transition Temperaturementioning

confidence: 99%

Copolymerization of styrene. IV. Copolymerization with esters of benzylidenecyanoacetic acid

Gilath

Ronel

Shmueli

et al. 1970

J of Applied Polymer Sci

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synopsisStyrene was copolymerized in bulk with a number of esters of benzylidenecyanoacetic acid. The kinetic scheme of all pairs fitted the improved scheme of copolymerization, taking into account the effect of the penultimate unit. The Alfrey-Price Q and e values were calculated. Using the modified Taft equation, log ( l h ) = p*u* + SE,, it was found that the relative reactivities of the ester monomers toward the polystyryl radical were correlated by the polar substituent constants u* of the ester alkyl groups ( p * = 0.14) and not by their steric substituent constants E, (6 = 0.008). RbumQLe styrene a 6t6 copolymBris6 en masse avec certains esters de l'acide benzylidbnecyanoac6tique. Le schema cin6tique de toutes les paires est conforme au schema de copolym6risation am6lior6 qui tient compte de l'effet de l'unit6 p6nultihme. Les valeurs Q et e selon Alfrey-Price ont 6t6 calcul6es. Utilisant 1'6quation de Taft modifibe, log ( l h ) = p*u* + SE,, il a 6th trouv6 que les r6activit6s relatives des comonombres B l'bgard de l'attaque du radical polystyryle sont influencbs par les constantes des substituants polaires u* ( p * = 0.14) mais non pas par les constantes des substituants st6riques E,,(S = 0.008) des substituants alcoyl6s des esters. ZusammenfassungStyrol wurde in Substanz mit mehreren Ester der Beneylidencyanessigsaure copolymerisiert. Alle Paare entsprachen dem verbessertem Reaktionsschema der Copolymerisation, das den Einfluss der Vorletzten Gruppe berucksichtigt. Die Alfrey-Price Q und e Werte wurden berechnet. Bei Benutzung der modifizierten Taft Gleichung, log (l/rl) = p*u* + SE., wurde gefunden, dass die relativen Reaktivitaten der EsterMonomere gegen Polystyrolradikale von den polaren Substituentenkonstanten u* ( p * = 0.14), nicht aber von den sterischen Substituentenkonstanten E, (6 = 0.008) der Alkylgruppen der Ester abhiingen.

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“…Ringsubstituted ethyl 2-cyano-3-phenyl-2-propenoates (ECPP), RPhCH=C(CN)CO2C2H5 continue to attract attention as comonomers for modification of commercial polymers. Ring unsubstituted ECPP has been copolymerized with acrylonitrile [2], styrene [3], vinyl acetate [4,5], acrylic esters [6], and 1,2-ethanediyl ester of 2-methylpropenoic acid [7].…”

Section: Introductionmentioning

confidence: 99%

Novel functional copolymers of vinyl acetate: 1. Alkyl ring-substituted ethyl 2-cyano-3-phenyl-2-propenoates

Killam

Barkauskas

Dembiec

et al. 2021

Preprint

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Alkyl ring-substituted ethyl 2-cyano-3-phenyl-2-propenoates, RPhCH=C(CN)CO2C2H5 (where R is 2-methyl, 3-methyl, 4-methyl, 4-ethyl, 4-isopropyl, 4-t-butyl, 4-trifluoromethyl, 2-trifluoromethyl) were prepared and copolymerized with vinyl acetate in solution with radical initiation. The compositions of the copolymers were calculated from nitrogen analysis and the structures were analyzed by IR, 1H and 13C-NMR. Thermal behavior of the copolymers was studied by DSC and TGA. Decomposition of the copolymers in nitrogen occurred in two steps, first in the 200-500ºC range with residue (13-16 wt%), which then decomposed in the 500-800ºC range.

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Copolymerization of acrylonitrile. I. Copolymerization with styrene derivatives containing nitrile groups in the side chain

Abstract: Acrylonitrile was copolymerized in bulk with cinnamonitrile (I), ethyl benzylidenecyanoacetate (II), and benzylidenemalononitrile (III) by radical initiation up to low conversions. The conventional scheme of copolymerization fitted all the three copolymer pairs.

Cited by 27 publications

References 11 publications

Copolymerization of vinyl acetate with benzylidenemalononitrile

Copolymerization of vinyl acetate with benzylidenemalononitrile

Copolymerization of styrene. IV. Copolymerization with esters of benzylidenecyanoacetic acid

Novel functional copolymers of vinyl acetate: 1. Alkyl ring-substituted ethyl 2-cyano-3-phenyl-2-propenoates

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