1979

DOI: 10.1295/polymj.11.607

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Synthesis of Poly(4-vinyl-1,4-butyrolactone-co-cyanoethylene)

¹

,

Masakazu Yoshikawa

²

,

Masayuki Hasegawa

³

et al.

Abstract: Copolymerizations of 3-vinyl-1,4-butyrolactone (1) and acrylonitrile (2) initiated by dibenzoyl peroxide or 2,2'-azoisobutyronitrile were carried out. The following reactivity ratios were found for the bulk copolymerization at 70°C for 1 : rl =0,078 +0,037 and for 2: r2 =4,7f0,3. In addition the values Q1=0,033 and el=0,053 were obtained. The ring opening and the ring closing of the lactone moiety in the polymer with an alkaline and an acid were found to be reversible. ~

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Cited by 7 publications

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“…1979,10, 243; German (East) Patent 133 230, 1978. (9) Takaishi, N.; Imai, H.; Bertelo, C. A.; Stille, J. K. J. Am.…”

mentioning

confidence: 99%

Synthesis of poly[3-(4-vinylphenoxy)phthalide-co-acrylonitrile] and the selective transport properties of its membranes

1981

Macromolecules

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A new vinyl monomer containing the lactone moiety 3-(4-vinylphenoxy)phthalide (1) was synthesized and copolymerized with acrylonitrile (2). The sequence distributions of the copolymers were investigated by 13C NMR spectroscopy. A penultimate model was used to interpret the propagation process in the copolymerization. The reactivity ratios in the solution polymerization at 45 °C were evaluated: r^= 0.23, ri = 0.41, r2 = 0.08, and r2' = 0.11. Radical reactivity indices and frontier electron densities for 1 and 2 were calculated. The membrane prepared from this copolymer showed selective transport properties for alkali metal ions. The selectivity in the transport of alkali metal ions by electrodialysis depended on the fraction of the opened phthalide moiety, i.e., lactone moiety. The present membrane, of which the fraction of opened lactone is small, showed an appreciable ability to separate Li+ from Na+ and K+.

“…1979,10, 243; German (East) Patent 133 230, 1978. (9) Takaishi, N.; Imai, H.; Bertelo, C. A.; Stille, J. K. J. Am.…”

mentioning

confidence: 99%

Synthesis of poly[3-(4-vinylphenoxy)phthalide-co-acrylonitrile] and the selective transport properties of its membranes

1981

Macromolecules

Self Cite

View full text Add to dashboard Cite

A new vinyl monomer containing the lactone moiety 3-(4-vinylphenoxy)phthalide (1) was synthesized and copolymerized with acrylonitrile (2). The sequence distributions of the copolymers were investigated by 13C NMR spectroscopy. A penultimate model was used to interpret the propagation process in the copolymerization. The reactivity ratios in the solution polymerization at 45 °C were evaluated: r^= 0.23, ri = 0.41, r2 = 0.08, and r2' = 0.11. Radical reactivity indices and frontier electron densities for 1 and 2 were calculated. The membrane prepared from this copolymer showed selective transport properties for alkali metal ions. The selectivity in the transport of alkali metal ions by electrodialysis depended on the fraction of the opened phthalide moiety, i.e., lactone moiety. The present membrane, of which the fraction of opened lactone is small, showed an appreciable ability to separate Li+ from Na+ and K+.

Syntheses and Properties of Some Polymers Related to Biological Functions: Metal Transport and Template-Directed Oligonucleotide Synthesis

¹

1984

Contemporary Topics in Polymer Science

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No abstract

Synthesis of poly[2-(N,N-dimethyl)aminoethyl methacrylate-co-acrylonitrile]

¹

,

²

,

³

et al. 1995

Polymer Bulletin

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Due to a typesetting error the first name of Professor Tachibana was misspelled. His name is Akitomo Tachibana.

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