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Volume 82, Issue 12
Displaying 1-6 of 6 articles from this issue
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Regular Papers
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Yoichi TOMINAGA, Shigeo ASAI, Masao SUMITA2009 Volume 82 Issue 12 Pages 499-506
Published: 2009
Released on J-STAGE: August 25, 2010
JOURNAL FREE ACCESSNovel ion-conductive elastomer blends containing polyether-based solid polymer electrolyte (SPE) were prepared by the radical polymerization of oligo[(ethylene oxide)-co-(propylene oxide)] methacrylate (M(EO/PO)) monomer with LiClO4 in NBR. Obtained samples showed micro- (or nano-) scale Sea-Island phase separation, which was revealed from the TEM observation in case of NBR18/PM(EO/PO)mono-LiClO4 50/50 wt% blend, and the DC conductivity under dry N2 (σdry) was approximately 10–8 S cm–1 at 25 °C. The difference in the conductivity of blend samples between dry and wet conditions was very small, whereas the conductivity of PM(EO/PO)-LiClO4 without NBR under wet condition (σwet) was 10-times higher than σdry. Moreover, the σdry of NBR43 blend sample (NBR43/electrolyte = 30/70 wt%) was higher than that of the neat electrolyte. The complex impedance measurement revealed that AC ionic conductivity of the NBR43 blend sample was 6.7 × 10–6 S cm–1 at 25 °C and the value was approximately 6-times higher than that of the neat electrolyte. This may be caused by accelerated ion-conduction between the electrolyte islands or on the NBR/electrolyte interface where the resistance is very small because of the electrical interactions between Li ions (orLi+−polyether complex domains) and nitrile groups of NBR.View full abstractDownload PDF (719K)
General Reviews
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Shinzo YAMASHITA2009 Volume 82 Issue 12 Pages 507-514
Published: 2009
Released on J-STAGE: August 25, 2010
JOURNAL FREE ACCESS“Forum on Elastomers” originated with the author, and sponsored by the Society of Rubber Industry, Japan, is held once a year since 1987. At last December, we had the 20th Forum. During 20 times Forum in total, there were contributions of 928 papers and 2865 participants. Thus, the Forum is familiar with the place of indefatigable assiduity on study of rubber science and technology, and play an important role in the development of rubber industry. Here, the courses of the Forum and some papers presented at 20 times Forum will be described and the development of rubber science and technology will also be discussed through these papers.View full abstractDownload PDF (400K) -
Eiichi TAKATORI2009 Volume 82 Issue 12 Pages 515-521
Published: 2009
Released on J-STAGE: August 25, 2010
JOURNAL FREE ACCESSInverse size exclusion chromatography (Inverse - SEC) is used as a chromatographic method for determining the pore size of porous materials. Inverse SEC can be applied to swollen material particles where the conventional methods, gas adsorption and mercury porosimetry, cannot be used. This report reviews the principles and the methods of Inverse SEC.View full abstractDownload PDF (898K)
Advanced Course on Rubber Science and Technology
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Shigeru YAMAGO, Yasuyuki NAKAMURA2009 Volume 82 Issue 12 Pages 522-526
Published: 2009
Released on J-STAGE: August 25, 2010
JOURNAL FREE ACCESSLiving radical polymerizations (LRPs) enable to synthesize polymers with precise control of molecular weight, molecular weight distribution, and chain end structure. This third article describes the synthetic methods of block copolymers and end-modified polymers using the living polymer end. These methods enable to construct highly functionalized and well-defined polymer architectures, and would be useful for the production of high-valued functional materials.View full abstractDownload PDF (577K)
Introduction to Rubber Science and Technology : Fundamental Physics of Rubber
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[in Japanese]2009 Volume 82 Issue 12 Pages 527-532
Published: 2009
Released on J-STAGE: August 25, 2010
JOURNAL FREE ACCESSDownload PDF (1001K)
Technical Note
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2009 Volume 82 Issue 12 Pages Annc12_305
Published: 2009
Released on J-STAGE: August 25, 2010
JOURNAL RESTRICTED ACCESSDownload PDF (299K)
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