巻号一覧
84 巻, 2 号
選択された号の論文の4件中1～4を表示しています
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研究論文
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齊藤 貴之, 仲山 和海, 渡邊 智子, 大武 義人2011 年 84 巻 2 号 p. 43-48
発行日: 2011年
公開日: 2011/12/29
ジャーナル フリーSignals in 13C-NMR spectrum for polychloroprene were re-assigned through 1D and 2D NMR spectroscopy, that is, distortionless enhancement by polarization transfer (DEPT), heteronuclear multiple quantum correlation (HMQC), and heteronuclear multiple bond correlation (HMBC) measurements. The unknown signals at 40.1, 43.0, 45.5, 128.4, 129.1, and 130.1 ppm in 13C-NMR spectrum for raw chloroprene rubber were assigned to secondary carbon of 1,2 unit, secondary carbon of 1,4 unit adjacent to 3,4 unit, tertiary carbon of 3,4 unit, tertiary carbon of 1,4 unit adjacent to 3,4 unit, quaternary carbon of 1,4 unit adjacent to 1,2 unit, and tertiary carbon of 1,4 unit adjacent to 1,2 unit, respectively. The resulting information on the assignments was used for characterization of chloroprene rubber vulcanizate and aged chloroprene rubber vulcanizate.抄録全体を表示PDF形式でダウンロード (1232K)
総説
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岩田 修一2011 年 84 巻 2 号 p. 49-55
発行日: 2011年
公開日: 2011/12/29
ジャーナル フリーFlow of viscoelastic fluid such as polymer melt or aqueous solution of polymer is more complex in complex flow geometry even at lower Reynolds number. Rheological behavior of the polymer fluid may change non-linearly as the flow condition. Therefore, flow analysis of such polymer fluid is more important for establishing a reliable design of the processing units. Even though there are useful viscoelastic models available, numerical prediction of viscoelastic fluid is not an easy task, because of hyperbolic nature of the constitutive equation. In the last decades, great progresses have been made on the numerical methods for solving viscoelastic flow problems. In this paper, some of the finite element formulations are described and discussed.抄録全体を表示PDF形式でダウンロード (823K)
特論講座
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I．ポリウレタンの基礎古川 睦久2011 年 84 巻 2 号 p. 56-61
発行日: 2011年
公開日: 2011/12/29
ジャーナル フリーPolyurethanes (PUs) can be given as one of the most popular polar polymers. The PUs are usually composed of soft segment formed with polymer glycol and hard segment done with diisocyanate and chain extender. History, basic chemistry of isocyanates, preparation method, chemical and physical structures of polyurethanes were described to understand properties of polyurethanes.抄録全体を表示PDF形式でダウンロード (837K)
紹介
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太智 重光2011 年 84 巻 2 号 p. Annc02_56
発行日: 2011年
公開日: 2011/12/29
ジャーナル 認証ありPDF形式でダウンロード (434K)
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