Synthesis and characterization of phenacyl methacrylate - acrylonitrile copolymers and determination of monomer reactivity ratios

Soykan, Cengiz; Çoşkun, Mehmet; Ahmedzade, Misir

doi:10.1002/1097-0126(200006)49:6<479::aid-pi334>3.0.co;2-w

Cited by 27 publications

(14 citation statements)

References 19 publications

(17 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The copolymer composition and its distribution are dependent on it reactivity ratios, this can be evaluated by employing linear and nonlinear methods or by using other copolymer composition equations. [14][15][16] In radical copolymerization, the reactivity of a free radical depends upon the electronic delocalization, polarity and volume nature of the side groups linked to the radical carbon. All these factors can be studied by analyzing the reaction between functionalized monomers to obtain the corresponding functionalized copolymers.…”

Section: Introductionmentioning

confidence: 99%

Copolymerization ofN-vinyl pyrrolidone with functionalized vinyl monomers: Synthesis, characterization and reactivity relationships

et al. 2009

View full text Add to dashboard Cite

Copolymers of N-vinylpyrrolidone (NVP) comonomer with styrene (St), hydroxypropyl methacrylate (HPMA) and carboxyphenyl maleimide (CPMI) were synthesized by free radical polymerization using 2,2'-azobisisobutyronitrile (AIBN) initiator in 1,4-dioxane solvent. The copolymers formed were characterized by FTIR, 1 H NMR and 1 3 C NMR techniques and their thermal properties were studied by DSC and TGA. Copolymer composition was determined by 1 H NMR and/or by elemental analysis and monomer reactivity ratios (MRR) were estimated by the linear methods of Kelen-Tudos (K-T) and extended Kelen-Tudos (EK-T) and the non-linear approach. Copolymers of St and HPMA with NVP formed blocks of one of the monomer units, whereas alternating copolymers were obtained in CPMI-NVP, depending upon the side chain substitution. The MRR values are discussed in terms of monomer structural properties such as electronegativity and electron delocalization. The sequence distribution of monomers in the copolymers was studied by statistical method based on the average reactivity ratios obtained by EK-T method.

show abstract

Section: Introductionmentioning

confidence: 99%

Copolymerization ofN-vinyl pyrrolidone with functionalized vinyl monomers: Synthesis, characterization and reactivity relationships

et al. 2009

View full text Add to dashboard Cite

show abstract

“…Copolymer composition and its distribution are dependent on monomer reactivity ratios 1. Reactivity ratio values may be evaluated by various procedures: linear, nonlinear, and other copolymer composition equations 2–4. The Kelen–Tudos method has been widely used 5.…”

Section: Introductionmentioning

confidence: 99%

Monte Carlo simulation of sequence distributions of acrylonitrile copolymers

Hou

Sun

Liang

et al. 2005

J of Applied Polymer Sci

View full text Add to dashboard Cite

A Monte Carlo simulation examining the effect of monomer ratios on the composition and sequence distribution of acrylonitrile(AN) copolymers with N-vinyl pyrrolidone (NVP), itaconic acid (IA), and acrylic acid (AA) as comonomers has been developed. The Kelen-Tudos method was used to estimate monomer reactivity ratios. The results of the simulation are consistent with the academic conclusion and are as foreseen by the experimental data. The average number of NVP identical monomers in a sequence length of AN/NVP copolymer chain increases continuously and the average number of AN identical monomers in a sequence length shows a prominent decrease with an increase of NVP concentration in the feed. Changes in the monomer average number of AN/IA and AN/AA copolymers in a sequence length were the same as those of AN/ NVP copolymer with an increase of comonomer concentration in the feed. The optimum weight ratio of AN with comonomers for manufacturing carbon fibers is 98/2. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 96: [483][484][485][486][487][488] 2005

show abstract

“…The copolymer composition and monomer reactivity ratios of the methacrylate system were determined by elemental analysis. As part of a continuing research programme on the structure–reactivity relationships exhibited by vinyl monomers, in both their radical‐initiated homo‐ and copolymerizations, the polymerization behaviour of methacrylic esters containing various functional groups has been investigated in our laboratory 4–6. Clarification of the correlation between the structures and reactivities of vinyl monomers in their radical homo and copolymerizations is a very important step toward control of monomer and radical reactivity.…”

Section: Introductionmentioning

confidence: 99%

Free‐radical‐initiated copolymerization of 2‐(2‐naphthylamino)‐2‐oxo‐ethyl methacrylate with methyl methacrylate and styrene

Erol

Soykan²

2004

Polymer International

Self Cite

View full text Add to dashboard Cite

A naphthylamino species containing the methacrylate‐based monomer 2‐(2‐naphthylamino)‐2‐oxo‐ethyl methacrylate (NphAOEMA) was synthesized by reacting 2‐chloro‐N‐2‐naphthylacetamide (NphA) with sodium methacrylate in acetonitrile. The acetamide was prepared by reacting 1‐naphthylamine, dissolved in benzene, with chloroacetylchloride. The free‐radical‐initiated copolymerization's of NphAOEMA, with methyl methacrylate (MMA) and styrene (ST), were carried out in dimethylsulfoxide (DMSO) solution at 65 °C using 2,2′‐azobisisobutyronitrile (AIBN) as the initiator with various monomer‐to‐monomer ratios in the feed. The monomer (NphAOEMA) and copolymers were characterized from FT‐IR, 1H and 13C NMR spectral studies. The copolymer compositions were evaluated by determining the nitrogen contents in the polymers. The reactivity ratios of the monomers were determined by the application of the Fineman–Ross and Kelen–Tüdőos methods. The molecular weights (M̄w and M̄n) and polydispersity indices of the polymers were measured by using gel permation chromagtography. The thermal stabilities of the homo and copolymers were investigated by using thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The solubilities and inherent viscosities of the homo and copolymers were also studied. Copyright © 2004 Society of Chemical Industry

show abstract

Synthesis and characterization of phenacyl methacrylate - acrylonitrile copolymers and determination of monomer reactivity ratios

Cited by 27 publications

References 19 publications

Copolymerization ofN-vinyl pyrrolidone with functionalized vinyl monomers: Synthesis, characterization and reactivity relationships

Copolymerization ofN-vinyl pyrrolidone with functionalized vinyl monomers: Synthesis, characterization and reactivity relationships

Monte Carlo simulation of sequence distributions of acrylonitrile copolymers

Free‐radical‐initiated copolymerization of 2‐(2‐naphthylamino)‐2‐oxo‐ethyl methacrylate with methyl methacrylate and styrene

Contact Info

Product

Resources

About