Analysis of the role of complex in the alternating copolymerization of N-vinylpyrrolidone and maleic anhydride

Fehérvári, Flóra; Azori, M.; Földes‐Berezsnich, T.; Tüdős, F.

doi:10.1007/bf00255114

Cited by 11 publications

(8 citation statements)

References 13 publications

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“…In light of the aforementioned facts, the completion of previously obtained results2–4, 6 with the experimental results of the initiator (AIBN) solvation effect for the three‐component system of solvents, that is AN–MM/DMF/AIBN/60 °C, seems to be indispensable.…”

Section: Introductionmentioning

confidence: 89%

“…Similar results (±3%) were obtained with both methods. The details of the k d determination have been described previously 2–4, 8…”

Section: Methodsmentioning

confidence: 99%

“…This hypothesis, utilized for the experimental results of an ethyl acrylate/ N,N ‐dimethylformamide (DMF)/AIBN/50 °C system,2 demonstrated that a curve k d = f ( x M ) (possessing a plateau for x M = 0 up to x M = 0.8) corresponds to the existence of the two simple solvated forms of the initiator:1 IM and IS for K S / K M = 15.8.…”

Section: Introductionmentioning

confidence: 99%

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Solvation effect in the thermal decomposition of 2,2?-azoisobutyronitrile in the three-component system

Szafko

Feist

Pabin–Szafko

2000

J. Polym. Sci. A Polym. Chem.

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The thermal decomposition rate constant (kd ) of 2,2′‐azoisobutyronitrile in acrylonitrile (AN; monomer A)–methyl methacrylate (MM; monomer B) comonomer mixtures in N,N‐dimethylformamide (DMF) as a function of the comonomer mixture composition and its concentration in the solvent at 60 °C was studied. The dependences kd = f(xA ,C) [xA (mole fraction of A in the comonomer mixture) = A/(A + B) = A/C, where C is the comonomer mixture concentration] have a different course as a function of C: from a curve kd = f(xA ) approaching the straight line (C = 2 mol · dm−3) to a convex curve possessing a maximum at a point xA = 0.7 (C = 4 mol · dm−3) to a curve with a flattened wide maximum within the range of xA = 0.2–0.8 (C = 7 mol · dm−3) to a curve with the shape of a lying s (C = 9 mol · dm−3). All the courses of the experimental dependences kd = f(xA ,C) can be explained with a hypothesis of initiator solvation by the comonomers AN and MM and the solvent DMF. The existing solvated forms, their relative stability constants, the thermal decomposition rate constants, and the relative contents in the system were determined. © 2000 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 38: 2156–2166, 2000

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Section: Introductionmentioning

confidence: 89%

“…Similar results (±3%) were obtained with both methods. The details of the k d determination have been described previously 2–4, 8…”

Section: Methodsmentioning

confidence: 99%

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Solvation effect in the thermal decomposition of 2,2?-azoisobutyronitrile in the three-component system

Szafko

Feist

Pabin–Szafko

2000

J. Polym. Sci. A Polym. Chem.

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“…During the past 20 years, more attention has been focused on the copolymerization of styrene (St) and ethyl acrylate (EA) 1–6. The kinetics of this reaction have been studied widely in bulk, solution, and emulsion.…”

Section: Introductionmentioning

confidence: 99%

“…The determination of the reactivity ratio has been the major focus of studies described in the open literature for this copolymerization system 7–17. The results of numerous studies in which the reactivity ratios have been calculated are summarized in Table I.…”

Section: Introductionmentioning

confidence: 99%

Using ¹H‐NMR spectroscopy for the kinetic study of the in situ solution free‐radical copolymerization of styrene and ethyl acrylate

Abdollahi

Mehdipour‐Ataei

Ziaee

2007

J of Applied Polymer Sci

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The free-radical copolymerization of styrene and ethyl acrylate in benzene-d 6 as the solvent in the presence of benzoyl peroxide as an initiator at 708C was studied by online 1 H-NMR spectroscopy. The chemical composition of the copolymer at different reaction times was calculated from the conversion of the monomers to the copolymer, and then the reactivity ratios of styrene and ethyl acrylate were determined at both low and high conversions. Data for the overall monomer conversion versus the time were used to estimate the ratio k p k t À0.5 for different compositions of the initial feed (k p is the propagation rate constant, and k t is the termination rate constant). k p k t À0.5 increased with an increasing molar fraction of ethyl acrylate in the initial feed. The monomer mixture and copolymer compositions versus the overall monomer conversion were calculated with the data of 1 H-NMR spectra. The incorporation of the styrene monomer into the copolymer structure was more favored than that of the ethyl acrylate monomer. Reducing the molar fraction of styrene in the initial feed intensified this. Drawing the molar fraction of styrene (or ethyl acrylate) in the copolymer chains versus that in the initial feed showed a tendency of the system toward random copolymerization.

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Polymerization of N‐Vinyl Lactam with Reactive Monomers

Tallon

Musa

2021

Handbook of Pyrrolidone and Caprolactam Based Materials

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This chapter begins with the copolymerization of N‐vinyl pyrrolidone with N‐vinyl caprolactam. It describes the copolymerization of N‐vinyl pyrrolidone (VP) with N‐vinyl formamide (VF), as another example of N‐vinyl amide comonomer. The reactivity ratio for VF and VP monomers are unity, and their copolymerization is the rare case of an azeotropic copolymerization, where the composition of the feed is identical to that found in the copolymer. Polyvinyl acetate is used in water‐based latex as a film former. It is also used in adhesives due to its tacky nature. Maleic anhydride does not readily homopolymerize on its own, and only low molecular weight oligomers are typically formed when using conventional free‐radical polymerization. Poly‐N‐substituted maleimides provides for stiff resins with high thermal and chemical resiliency. These desirable properties are important in the focused development of new polymeric materials combining high thermal and mechanical performance with new functional properties.

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Analysis of the role of complex in the alternating copolymerization of N-vinylpyrrolidone and maleic anhydride

Cited by 11 publications

References 13 publications

Solvation effect in the thermal decomposition of 2,2?-azoisobutyronitrile in the three-component system

Solvation effect in the thermal decomposition of 2,2?-azoisobutyronitrile in the three-component system

Using ¹H‐NMR spectroscopy for the kinetic study of the in situ solution free‐radical copolymerization of styrene and ethyl acrylate

Polymerization of N‐Vinyl Lactam with Reactive Monomers

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Analysis of the role of complex in the alternating copolymerization of N-vinylpyrrolidone and maleic anhydride

Cited by 11 publications

References 13 publications

Solvation effect in the thermal decomposition of 2,2?-azoisobutyronitrile in the three-component system

Solvation effect in the thermal decomposition of 2,2?-azoisobutyronitrile in the three-component system

Using 1H‐NMR spectroscopy for the kinetic study of the in situ solution free‐radical copolymerization of styrene and ethyl acrylate

Polymerization of N‐Vinyl Lactam with Reactive Monomers

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Using ¹H‐NMR spectroscopy for the kinetic study of the in situ solution free‐radical copolymerization of styrene and ethyl acrylate