Estimation of Sequence Distribution in Several Poly (vinyl ester) s Obtained by Radical Polymerization

The sequence distributions of several poly (vinyl ester) s were estimated by the Monte Carlo method using random numbers with drand 48 in the UNIX system on the basis of isotactic parameters obtained by homo-polymerizations. The ratios of r/m, rr/rnm and rrrr/mmmm of poly (vinyl propionate) (PVPr),...

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Published inKOBUNSHI RONBUNSHU Vol. 57; no. 5; pp. 289 - 293
Main Authors SUGIMOTO, Mitsuhiro, ISONO, Teizo, YAMAMOTO, Tohei, KAMACHI, Mikiharu
Format Journal Article
LanguageJapanese
Published Tokyo The Society of Polymer Science, Japan 01.01.2000
Tsukiji daisan nagaoka
Subjects
Monte Carlo Method
Penultimate Effect
Random Number
Sequence Distribution
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Summary:The sequence distributions of several poly (vinyl ester) s were estimated by the Monte Carlo method using random numbers with drand 48 in the UNIX system on the basis of isotactic parameters obtained by homo-polymerizations. The ratios of r/m, rr/rnm and rrrr/mmmm of poly (vinyl propionate) (PVPr), poly (vinyl butylate) (PVBu) and poly (vinyl decanoate) (PVD) were in good agreement with those determined by 1H- or 13C NMR spectroscopy. In the case of poly (vinyl isobutylate) (PViBu) and poly (vinyl pivalate) (PVP), the results of simulation by taking into account a penultimate effect were in good agreement with those of experiment. Although in the case of low Pn, each polymer has different sequence distribution, in the case of high Pn, each polymer has almost the same sequence distribution, and we could visualize the probable sequence distribution.
ISSN:0386-2186
1881-5685
DOI:10.1295/koron.57.289