1982
DOI: 10.1021/ma00232a038
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Random-coil configurations of poly(vinyl bromide) chains

Abstract: Two samples of poly(vinyl bromide) were prepared and purified. Sample A was synthesized by radical polymerization of vinyl bromide at 35 °C, and sample B was obtained by extraction of sample A with dioxane at room temperature. Both samples had an isotactic content (determined by 13C NMR) of 46%. Molecular weight averages were calculated from viscometric measurements in THF solutions and were found to be 52100 and 27400 for samples A and B, respectively. Dielectric measurements were performed in solutions of bo… Show more

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Cited by 13 publications
(7 citation statements)
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References 3 publications
(5 reference statements)
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“…From eq 7 and 22, we then find X-1 = 125 A and Mh = 37.3 A"1 in case 1 and X"1 = 48.9 A and ML = 91.3 A"1 in case 2. As seen from Figure 9, for both the RIS model and the HW chain in case 1, Cn exhibits oscillations in the range x 5 30 and then log x…”
Section: Other Polymersmentioning
confidence: 86%
“…From eq 7 and 22, we then find X-1 = 125 A and Mh = 37.3 A"1 in case 1 and X"1 = 48.9 A and ML = 91.3 A"1 in case 2. As seen from Figure 9, for both the RIS model and the HW chain in case 1, Cn exhibits oscillations in the range x 5 30 and then log x…”
Section: Other Polymersmentioning
confidence: 86%
“…iPoly(vinyl carbazole) Abe et al [14] A 066 (2) 2 0.29 0.53, 0.47 0.89 iPoly(methyl vinyl ketone) Suter [15] A 067 2 0.31 0.54, 0.46 0.87 iPoly(N-vinyl pyrrolidone) Tonelli [16] A 063 2 0.33 0.53, 0.47 0.89 iPoly(vinyl bromide) Saiz et al [17] A 012 3 0.43 0.50, 0.46 0.92 Polydimethylsilylene Welsh et al [18] S 087 (FR) 3 0.45 0.44, 0.44 1.00 sPoly(N-vinyl pyrrolidone) Tonelli [16] A 063 2 0.45 0.65, 0.35 0.54 iPolystyrene Yoon et al [19] A 048 2 0.46 0.57, 0.43 0.75 Poly(vinylidene bromide) Carballeira et al [20] S 101 6 0.52 0.27, 0.27 1.00 iPoly(propylene)…”
Section: Polymer Primary Referencementioning
confidence: 99%
“…The rotational isomeric state model for unperturbed PVB differs from that for PVC in that the C-C-C angles alternate between 112°and 114°, with the larger angle at C-CH2-C, and the statistical weights are r¡ = 1.29, = 0.43, = 0.015, ' = 0.034, and " = 0.0024. 7 The configurational statistics for unperturbed PC1S are adequately described by a rotational isomeric state model developed for unperturbed polystyrene.8 Suitable statistical weights at 300 K are = 1.56, = 0, and = ' = " = 0.045.9 The C-C-C angles alternate between 112°and 114°, as was the case in PVB. We have chosen to place the gauche states at ±120°from the trans state, as was done for PVC and PVB.…”
Section: Simulationsmentioning
confidence: 99%