NIPPON GOMU KYOKAISHI
Print ISSN : 0029-022X
Search
Advanced search
OR
Browse
Search
Volume 61, Issue 4
Displaying 1-7 of 7 articles from this issue
Show all abstracts
    • |<
    • <
    • 1
    • >
    • >|
  • [title in Japanese]
    H. M. Leeper, R. M. Wright, [in Japanese]
    1988 Volume 61 Issue 4 Pages 233-259
    Published: 1988
    Released on J-STAGE: July 09, 2007
    DOIhttps://doi.org/10.2324/gomu.61.233
    JOURNAL FREE ACCESS
    Download PDF (4389K)
  • [title in Japanese]
    [in Japanese]
    1988 Volume 61 Issue 4 Pages 260-267
    Published: 1988
    Released on J-STAGE: July 09, 2007
    DOIhttps://doi.org/10.2324/gomu.61.260
    JOURNAL FREE ACCESS
    Download PDF (1803K)
  • CHEMICAL MODIFICATIONS OF RUBBERS BY METATHESIS CATALYSTS
    Shinzo KOHJIYA, Arisol ALIMUNIAR
    1988 Volume 61 Issue 4 Pages 268-276
    Published: 1988
    Released on J-STAGE: July 09, 2007
    DOIhttps://doi.org/10.2324/gomu.61.268
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    Metathesis catalysts are very unique catalyst systems composed of WCl6 or MoCl5 (in most cases) and organometalic compounds (in many cases, Sn(CH3)4 or Al(C2H5)2Cl). They are reactive towards olefinic compounds, and rearrangements of the double bonds occur. The metathesis reactions are classified into (i) olefin metathesis, (ii) metathesis polymerization, and (iii) metathesis degradation. Olefin metathesis and metathesis polymerization are briefly reviewed. From a view point of polymer reactions, several articles treating metathesis degradation were extensively reviewed. In these studies, rubbers, i.e., natural rubber, cis-1, 4-polyisoprene, polybutadienes, styrene-butadiene rubber, polyalkenamers were the substrates of the reaction. It is suggested that this reaction may be useful not only in degradation of rubbers, but also in some chemical modifications, for example, synthesis of reactive oligomers, syntheses of graft and block copolymers.
    View full abstract
    Download PDF (948K)
  • [title in Japanese]
    [in Japanese]
    1988 Volume 61 Issue 4 Pages 277-280
    Published: 1988
    Released on J-STAGE: July 09, 2007
    DOIhttps://doi.org/10.2324/gomu.61.277
    JOURNAL FREE ACCESS
    Download PDF (915K)
  • [title in Japanese]
    [in Japanese]
    1988 Volume 61 Issue 4 Pages 281-283
    Published: 1988
    Released on J-STAGE: July 09, 2007
    DOIhttps://doi.org/10.2324/gomu.61.281
    JOURNAL FREE ACCESS
    Download PDF (642K)
  • STUDIES ON RELATIONSHIP BETWEEN PARTICLES-DISPERSED STRUCTURES VS. MODULI OR FRACTURE PROPERTIES
    Kunihiko FUJIMOTO, Naoto MIFUNE, Yoshihiko HIGASHI
    1988 Volume 61 Issue 4 Pages 284-294
    Published: 1988
    Released on J-STAGE: July 09, 2007
    DOIhttps://doi.org/10.2324/gomu.61.284
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    Thermodynamic properties of moduli and fracture properties of particle reinforced rubber vulcanizates depend discontinuously on particles concentration. In this paper, we made a study using SBR, containing carbon black or CaCO3, with the following results:
    (1) In a system which contains a large amount of strong reinforcing particles, particles-dispersed structures exhibit a phase transition from random to ordered ones which have closed curve patterns, while at the same time modulus properties exhibit a convex curve with an increase in particles concentration.
    (2) In a system which forms random disordered-particles structures, inner stresses are delocalized by rearrangement of structures taking place in the process of deformation and fracture properties depend on physical properties of rubber chains in matrix and so the system is non-sensitive to the structures. On the other hand, after the phase transition, the system which contains ordered structures does not suffer such rearrangment of structures, therefore the fracture properties depend on the inner stresses, and thus the properties of the system are sensitive to the structures.
    View full abstract
    Download PDF (1340K)
  • [title in Japanese]
    [in Japanese]
    1988 Volume 61 Issue 4 Pages 295-296
    Published: 1988
    Released on J-STAGE: July 09, 2007
    DOIhttps://doi.org/10.2324/gomu.61.295
    JOURNAL RESTRICTED ACCESS
    Download PDF (273K)
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top