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Predecessor
Volume 72, Issue 12
Displaying 1-9 of 9 articles from this issue
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[in Japanese]1999 Volume 72 Issue 12 Pages 683-689
Published: 1999
Released on J-STAGE: July 09, 2007
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[in Japanese]1999 Volume 72 Issue 12 Pages 690-696
Published: 1999
Released on J-STAGE: July 09, 2007
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[in Japanese]1999 Volume 72 Issue 12 Pages 697-700
Published: 1999
Released on J-STAGE: July 09, 2007
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[in Japanese]1999 Volume 72 Issue 12 Pages 701-704
Published: 1999
Released on J-STAGE: July 09, 2007
JOURNAL FREE ACCESSDownload PDF (1013K) -
[in Japanese]1999 Volume 72 Issue 12 Pages 705-712
Published: 1999
Released on J-STAGE: July 09, 2007
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Shin-ichi INOUE, Tomohiro NISHIO, Yukio ONOUCHI, Yasuhide HASEI, Riich ...1999 Volume 72 Issue 12 Pages 713-718
Published: 1999
Released on J-STAGE: July 09, 2007
JOURNAL FREE ACCESSThe cured styrene butadiene rubber (C-SBR) latex prepared by a crosslinking of SBR with peroxide and other latices (SBR and natural rubber (NR)) were blended to develop a high performance and multi-functional elastomer. The resulting rubber has high tensile strength and hysteresis loss. This rubber has two peaks of tanδ at -50 and +40°C. When the volume fraction of C-SBR in the blended rubbers increased, the tensile strength increased, and the intensity of the two peaks of tanδ also increased. It is suggested that the particle of C-SBR in the vulcanized blended rubbers dispersed in a micro state.View full abstractDownload PDF (835K) -
Shin-ichi INOUE, Hiroshi OKAMOTO, Takami YOSHIDA, Hiroki MIYAMATSU1999 Volume 72 Issue 12 Pages 719-724
Published: 1999
Released on J-STAGE: July 09, 2007
JOURNAL FREE ACCESSThe polyurethane foam (PUF) giving functions, antibacterial and deodorant reactions, was prepared by a reaction of polyols containing additives with 2, 4-tolylene diisocyanate (TDI). The green tea powder, catechin 30 and catechin 90 were used as additives. Antibacterial tests of PUF were carried out by using three principal methods, bacterial multiplication control, colony count, and the shake flask. The three antibacterial reagents were compared to staphylococus and escheri-chiacoli. The green tea powder and catechin 30 gave a high antibacterial effect. However the catechin 90 gave a low antibacterial effect. Also, the green tea powder and catechin 30 may be useful as a natural deodorant reagent for a various odors due to its reasonable deodorant activity.View full abstractDownload PDF (918K) -
Hyunsuk SHIN, Kenji OGINO, Hisaya SATO, Eiichi KAWAI1999 Volume 72 Issue 12 Pages 725-730
Published: 1999
Released on J-STAGE: July 09, 2007
JOURNAL FREE ACCESSSeparation of styrene-methyl methacrylate-acrylonitrile terpolymers by chemical composition was studied using high-performance liquid chromatography(HPLC). Cross-linked polyacrylonitrile gel or polyacrylamide gel as a stationary phase and mixture of chloroform, acetonitrile and n-hexane as an eluent were used in the normal phase HPLC. For the reversed-phase HPLC, polystyrene gel and a mixture of chloroform and acetonitrile were used as a stationary phase and an eluent, respectively. Solvent gradient of increasing chloroform content was utilized. In the case of normal phase HPLC terpolymer was eluted from the non-polar polymer, while from the polar polymer in the case of reversed-phase HPLC. Individual terpolymers were completely separated from a mixture of nine terpolymers by cross-fractionation using the combination of HPLC with acrylonitrile and acrylamide column or acrylonitrile and styrene column system.View full abstractDownload PDF (683K) -
[in Japanese]1999 Volume 72 Issue 12 Pages 732-733
Published: 1999
Released on J-STAGE: July 09, 2007
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