NIPPON GOMU KYOKAISHI
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Volume 88, Issue 5
Displaying 1-7 of 7 articles from this issue
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General Reviews
  • Historical Details about Investigations of Polymer Blends & Alloys
    Saburo AKIYAMA
    2015Volume 88Issue 5 Pages 151-156
    Published: 2015
    Released on J-STAGE: August 08, 2015
    DOIhttps://doi.org/10.2324/gomu.88.151
    JOURNAL FREE ACCESS
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    The investigations of polymer blends and alloys had been initiated by a rubber blend of NR/Gutta-percha, during the first half of 19th century.
    After that, SBR, HIPS, ABS, IPN and blockcopolymers have been produced one by one, and read to create various plastic blends and alloys.
    On the first 20th century, "Polymer Alloy" was clearly defined as "Multicomponent Polymer". In this paper,the investigated process of polymer alloys and blends during 20th century has been summarised from academic point of view.
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Advanced Course on Rubber Science and Technology
  • Nuclear Magnetic Resonance Spectroscopy for the Analysis of Soft Materials
    (5) Precise Characterization of Structure and Dynamics of Polymers by Solid-state NMR
    Toshikazu MIYOSHI
    2015Volume 88Issue 5 Pages 157-163
    Published: 2015
    Released on J-STAGE: August 08, 2015
    DOIhttps://doi.org/10.2324/gomu.88.157
    JOURNAL FREE ACCESS
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    Solid-state NMR (SS) spectroscopy is one of very powerful characterization techniques for elucidations of conformation, packing, chain folding structures, spatial heterogeneity, and molecular dynamics of polymers. Here, we review several good application of SS-NMR in polymer science.
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  • Fracture Reveals Real Structure and Characters of Rubber
    Part 5: Real Structure and the Generalized Concept for Rubber Reinforcement (First): Origin of the Strength and Weakness of Cross-linked Rubber
    Yoshihide FUKAHORI
    2015Volume 88Issue 5 Pages 164-171
    Published: 2015
    Released on J-STAGE: August 08, 2015
    DOIhttps://doi.org/10.2324/gomu.88.164
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    The author proposes a structure model of real cross-linked rubber to explain all phenomena discussed in this series of summary with the fundamentally universal concept. In cross-linked rubber, the cross-linked phase and uncross-linked phase are separated from each other to construct co-continuous structure and dispersed in-homogeneously over the system on the order of 1-5μm. The uncross-linked phase deforms mainly under the extension of the system, and thus dynamic and fracture properties of cross-linked rubber depend greatly on the characters of uncrosslinked rubber.
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  • Quality Engineering to Use in the Development Design Spot
    Chapter 1: You Can Design Reliability in Quality Engineering
    Mitsuo HASEBE
    2015Volume 88Issue 5 Pages 172-177
    Published: 2015
    Released on J-STAGE: August 08, 2015
    DOIhttps://doi.org/10.2324/gomu.88.172
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    Long time is necessary for a reliability test. A theory and the mechanism analysis of the reliability are difficult, too. However, a way of thinking not to need a long-time test is suggested. It is quality engineering.
    There are two kinds in the quality of the product. It is a kind to be able to treat by technique of the quality control and a kind not to be able to treat. It is necessary for the latter quality to be established at a development design stage. I comment on technique of preventing it of that purpose at six times.
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  • Industrial Synthetic Method of the Rubbers
    1. Butadiene Rubber
    Takuo SONE
    2015Volume 88Issue 5 Pages 178-183
    Published: 2015
    Released on J-STAGE: August 08, 2015
    DOIhttps://doi.org/10.2324/gomu.88.178
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    Butadiene rubbers (BR) obtained by polymerization of 1,3-butadiene are one of general-purpose rubber and are produced all over the world. High cis-BR prepared from Ziegler-type catalyst and low cis-BR polymerized by anionic polymerization are widely used in the industry fields such as materials for tire and so on. These rubbers have good low-temperature properties, high rebound resilience, and excellent wear resistance compared with natural rubbers and styrene-butadiene rubbers. In this paper, synthetic methods and properties of BR produced industrially are reported.
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Activity Report
Technical Note
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