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Volume 39, Issue 2
Displaying 1-10 of 10 articles from this issue
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SHIGEYOSHI OSAKI1983 Volume 39 Issue 2 Pages P47-P52
Published: February 10, 1983
Released on J-STAGE: November 28, 2008
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Jiro Seta, Tamotsu Kitaguchi, Taisuke Ito1983 Volume 39 Issue 2 Pages T51-T57
Published: February 10, 1983
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSNylon 6 (Ny 6) monofilaments with various draw ratios were dyed in saturated aqueous solution of 1, 4, 5, 8-tetraaminoanthraquinone (4AAQ) at 90°C under various hydrostatic pressures up to 2.5 kbar. Diffusion coefficient (D) of 4AAQ in Ny 6 and activation volume for the diffusion (ΔV_??_), both along the parallel (_??_) and perpendicular (⊥) directions to the drawing axis, were obtained from the dye penetration distance vs. square root of diffusion time relationship and the pressure dependence of D. It was found that D_??_ decreases rapidly with increasing draw ratio, while D⊥ shows a maximum near draw ratio of 1.9 and then decreases rapidly. In the course of drawing, D⊥, persists in being larger than D_??_. In a striking contrast, however, for ΔV_??_, neither a significant change nor anisotropy for the two directions was obtained with increasing draw ratio. The reason for such an insensitive behavior of ΔV_??_ to the drawing was discussed.View full abstractDownload PDF (756K) -
TOKUHISA MIYAMATSU1983 Volume 39 Issue 2 Pages P53-P62
Published: February 10, 1983
Released on J-STAGE: November 28, 2008
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Katsuhiko Nakamae, Soji Nishiyama, Masahiro Tanpo, Tsunetaka Matsumoto1983 Volume 39 Issue 2 Pages T58-T61
Published: February 10, 1983
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSVarious solutions of polymers were coated on the vinylon fiber and factors which affect the adhered behavior of solution were investigated as a function of viscosity of solution, wettabiiity of fiber and fiber speed. Results were summarized as following.
1) Amount of adhered solution did not depend on its wettability but viscosity of solution and fiber speed.
2) The number of droplets formed on the fiber depended on the amount of adhered solution, Droplet formation of adhered solution was attributed to surface tension which caused total surface energy of adhered solution to minimize.View full abstractDownload PDF (797K) -
Tokuhisa Miyamatsu, Zenichi Orito, Shuichiro Hirono, Yoshihiko Kanchik ...1983 Volume 39 Issue 2 Pages T62-T68
Published: February 10, 1983
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSWith use of fibrous cation exchanger modified by introducing titanic acid, a study on recovery of trace uranium and radium in the waste water from uranium mines was carried out.
The fibrous adsorbent was proved to have an enough adsorption capacity for neutral or weak alkaline uranium solution such as mine water, rain leach water, dam water and so on.
Adsorption of a trace amount of radium in the waste water from uranium refining process was also investigated.
Using the granular adsorbent composed of fibrous adsorbent, field adsorption experiments were carried out with column system.
It was revealed that both uranium and radium are efficiently captured from the waste water of the uranium refining process of the Power-Reactor and Nuclear Fuel Development Corporation at the Ningyo Toge Mine.View full abstractDownload PDF (529K) -
KINNOSUKE HORIE1983 Volume 39 Issue 2 Pages P63-P68
Published: February 10, 1983
Released on J-STAGE: November 28, 2008
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Motonobu Nakaoka, Sadao Tamura, Yoshimichi Maeda, Takatsugu Azumi1983 Volume 39 Issue 2 Pages T69-T74
Published: February 10, 1983
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSThe adsorption behavior of various synthetic dyes on activated sludge was investigated.
In the pH range of 6-8, the adsorption activity varied largely with kinds of dyes. In particular, the remarkable feature was found for the adsorption behavior of basic dyes. In low pH, the quantities of the adsorptives such as direct dyes, acid dyes, reactive dyes and disperse dyes which were adsorbed on activated sludge increased greatly. Therefore, the adsorption isotherms of the above dyes on activated sludge were determined in pH 3. Our results showed that the adsorption behavior of many dyes on activated sludge resembled that on activated carbon.
When the actual printing waste water was treated using activated sludge as adsorbent, good results were obtained.View full abstractDownload PDF (360K) -
Lai Tsu-ping, Muneyoshi Sezako, Eiichi Kuze1983 Volume 39 Issue 2 Pages T75-T83
Published: February 10, 1983
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSThe system and performance of the developed data processing unit that detects and classifies the fabric defects as compared with the corresponding data of the normal region by using the statistical processing are studied.
The intensity distribution are sampled from the electro-optical output by scanning and the mean value of integration in each scanning times expressing the characters of the fabric without defects are obtained by the pre-processing part. Then the several parameters needed for detecting the defects are calculated according to these data by the digital computer.
The threshold values to separate the abnormal regions from normal are decided by way of K times of the standard deviation obtained from the histograms of the electro-optical output by the reflection or transparency from fabrics, also the values of K are judged by many experimental results.
The defect informations expressing the existing positions and sizes according to the threshold logic are detected by the analogue comparators and the peak holding circuits. These informations are changed into the binary coded signals by A-D converters and fed to the digital computer.
The digital computer prints out the several data fed from the data processing unit and the results calculated by these data.View full abstractDownload PDF (987K) -
Yukinobu Murata, Tsuyoshi Kiyotsukuri1983 Volume 39 Issue 2 Pages T84-T86
Published: February 10, 1983
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSThe quenched and heat-treated films of polystyrene containing 1, 4-diaminoanthraquinone dye were prepared, the physical properties of which were measured. It was confirmed by X-ray analysis and differential thermal analysis that the dye molecules in polystyrene crystallized by heat-treatment. The crystallization of the dye molecules occurred above the glass transition temperature of polystyrene. This crystallization was more prominent in films having higher content of the dye. The maximum temperature of loss modulus decreased with increasing dissolved (non-crystallized) dye content. This result is explained by the plasticizing effect of the dye molecules.View full abstractDownload PDF (174K) -
Tomiji Wakida, Toru Takagishi, Gong Ju Kim, Nobuhiko Kuroki1983 Volume 39 Issue 2 Pages T87-T92
Published: February 10, 1983
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSPolyester fiber has been treated in chlorinated hydrocarbon/water or water/chlorinated hydrocarbon emulsion. The chlorinated hydrocarbons used were 1, 1, 2, 2-tetrachloroethylene and 1, 1, 2, 2-tetrachloroethane. The changes in dyeing behavior, shrinkage, density, and X-ray diffraction of the fiber were studied as measures of amorphous and crystalline regions. Pretreatment in the emulsion led to greater dye uptake and rate of dye absorption. Moreover, dyeing in the presence of the emulsified tetrachloroethylene was found to increase significantly the rate of dye absorption relative to that in the absence of tetrachloroethylene or that of the fiber pretreated in the emulsion of the same composition. This appears to be due to solvent-induced structural changes of the fiber and carrier action of residual tetrachloroethylene adsorbed on the fiber.View full abstractDownload PDF (1381K)
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