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Predecessor
Volume 71, Issue 3
Displaying 1-9 of 9 articles from this issue
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[in Japanese]1998 Volume 71 Issue 3 Pages 125-128
Published: 1998
Released on J-STAGE: July 09, 2007
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[in Japanese], [in Japanese], [in Japanese]1998 Volume 71 Issue 3 Pages 129-139
Published: 1998
Released on J-STAGE: July 09, 2007
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[in Japanese]1998 Volume 71 Issue 3 Pages 140-146
Published: 1998
Released on J-STAGE: July 09, 2007
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[in Japanese], [in Japanese]1998 Volume 71 Issue 3 Pages 147-153
Published: 1998
Released on J-STAGE: July 09, 2007
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[in Japanese]1998 Volume 71 Issue 3 Pages 154-160
Published: 1998
Released on J-STAGE: July 09, 2007
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[in Japanese]1998 Volume 71 Issue 3 Pages 161-167
Published: 1998
Released on J-STAGE: July 09, 2007
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Shinichi NAKADE, Masaharu HAYASHI, Joshin OKADA, Yasuyuki TANAKA, Tosh ...1998 Volume 71 Issue 3 Pages 168-172
Published: 1998
Released on J-STAGE: July 09, 2007
JOURNAL FREE ACCESSDifferent threshold levels of residual extractable protein were derived for raw material and product of current commercial natural rubber latex (NRL) and also for raw material and products of highly deproteinized natural rubber latex (HDPNRL) from results of prick test which was carried out to Japanese patients sensitive to latex.
The level of NRL was 1ng/g for raw material and 50-100ng/g for product.
The level of HDPNRL was 600ng/g for raw material and 30-40μg/g for products.
It would be impossible to achieve the level of NRL product but easy to achieve the level of HDPNRL products.
It will be recommended to introduce some process to decompose compulsorily the protein included in NRL into the production process of NRL products.View full abstractDownload PDF (667K) -
Kunio MORI, Kenji SHIMIZU, Masayuki OKOSHI, Shoichi MATSUNAMI1998 Volume 71 Issue 3 Pages 173-179
Published: 1998
Released on J-STAGE: July 09, 2007
JOURNAL FREE ACCESSSuitability of the free energy slope theory in the blooming of stearamide (SA) from NBR samples have been investigated for three important factors such as concentration, the pressure to SA particles (elastic modulus in NBR samples) and abusolute temperature (T). In this theory, a parabolic law must applies between those factors and blooming rate. The parabolic law did not apply between blooming rate and concentration factors such as the amount of SA particles condensed, the diffusion coefficient of SA, the solubility of SA and the volume fraction of SA in NBR samples. This shows that the concentration factors do not suited the free energy slope theory at all. The external and internal pressure to SA particles in NBR samples was given by two different methods, the elongation of samples and the change of crosslinking density. The former did not suit at all to this theory because the blooming rate decreased with the elongation ratios. The latter was concluded not to suit to this theory as a whole though the parabolic law apply partially in the relation between crosslinking density and blooming rate. In the relation between the blooming rate and 1/T, the parabolic law was not applied at all. The activation energies in the blooming of SA from NBR samples were 46.6kJ mol-1 for 18%AN-NBR and 48.3kJ mol-1 for 18%AN-NBR. From above results, the blooming of SA was concluded not to suit the free energy slope theory.View full abstractDownload PDF (815K) -
[in Japanese]1998 Volume 71 Issue 3 Pages 182-183
Published: 1998
Released on J-STAGE: July 09, 2007
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