JOURNAL of the JAPAN RESEARCH ASSOCIATION for TEXTILE END-USES
Online ISSN : 1884-6599
Print ISSN : 0037-2072
ISSN-L : 0037-2072
Volume 28, Issue 6
Displaying 1-5 of 5 articles from this issue
  • [in Japanese]
    1987Volume 28Issue 6 Pages 214-218
    Published: June 25, 1987
    Released on J-STAGE: September 30, 2010
    JOURNAL FREE ACCESS
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  • [in Japanese], [in Japanese]
    1987Volume 28Issue 6 Pages 219-226
    Published: June 25, 1987
    Released on J-STAGE: September 30, 2010
    JOURNAL FREE ACCESS
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  • Tomoyuki Akai, Mutsuo Okuno
    1987Volume 28Issue 6 Pages 231-237
    Published: June 25, 1987
    Released on J-STAGE: September 30, 2010
    JOURNAL FREE ACCESS
    The repetition of space/fabric is realized in wearing a set of garments. A unit system of “space of higher humidity”/“fabric”/“space of lower humidity” can be assumed in this system. A new apparatus was developed to investigate the moisture transfer through a fabric in the transition state. The apparatus consists of two spaces, each of which has the different constant initial moisture density respectively. The apparent resistance to the mosture transfer of the specimen, held between two spaces, is measured and estimated by sensing the change of moisture density in respective space due to the transfer from one space to another. The moisture transfers of some cotton and polyester plain fabrics in the transition state were measured and discussed. The results are summarised as follows:
    (1) This apparatus makes it possible to evaluate the transitional moisture transfer in the apparent resistances to the moisture transfer on the each side of a specimen between two adjecent spaces.
    (2) Relations between the observed apparent resistance and each characteristcs of fabrics show the different trends between cotton and polyester. It seems that it is caused by differences in the contribution of the moisture absorption.
    (3) The apparent resistance of the cotton fabric in the transition state is influenced by the moisture conditioning made in advance, while that of polyester fiber is hardly influenced.
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  • Part 4: Beneficial Results of Primary Schools Where Pupils Are Guided Not to Wear Excess Clothing
    Asako Okukubo
    1987Volume 28Issue 6 Pages 238-244
    Published: June 25, 1987
    Released on J-STAGE: December 10, 2010
    JOURNAL FREE ACCESS
    This paper is to substantiate the implication in the previous papers that individuals will be able to achieve clothing habits more conducive to health through the modifying of relevant personal human factors by means of an investigation involving primary school pupils.
    The effective data for the analysis was obtaned from 630 school pupils from 4 schools where pupils were guided not to wear excess clothing (‘G’ School), and 877 from 6 schools where no guidance on clothing wear was given (‘N’ School) in the field surveys conducted during both autumn and winter in Osaka.
    The results obtained were as follows, and the effects from guidance against wearing excess clothing were proved.
    1) Pupils from the‘G’ schools wore less clothing than those from the‘N’ schools in terms of the ‘standardized clothing value’ during both autumn and winter.
    2) Pupils from the‘G’ schools built up personal human-factor profiles approximating those who are able to achieve thermal comfort with less clothing.
    3) Pupils from the‘G’ schools had a lower rate of catching colds during winter than those from the‘N’ schools. In addition, pupils from the‘G’ schools also had a lower rate of absence from school due to illness during winter.
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  • Part 2: Resisting Effects of N-Acyl Amino acid Surfactant on the Degradation and Fading of Fabrics Dyed with Metalized Dye in Bleaching Process with Oxidizing Bleaching Agent
    Yuko Imabayashi, Seibei Yoshikawa, Katashi Takahashi
    1987Volume 28Issue 6 Pages 245-250
    Published: June 25, 1987
    Released on J-STAGE: September 30, 2010
    JOURNAL FREE ACCESS
    The effect of an addition of surfactant derived from amino acids into a bleaching solution was investigated on the fabrics dyed with metalized dye in the bleaching process by the oxidizing bleaching agent. The used surfactants were two anionic ones. Disodium N-stearoyl L-glutamate (HS-21) as surfactant derived from amino acid and sodium dodecyl sulfonate (SDS) as a control surfactant were used.
    The HS-21 had a remarkable resisting effect on the degradation and fading of fabrics dyed with metalized (Cu) dye by the repeated bleaching in the case of SDS addition.
    The decomposition rate of bleaching agent in an aqueous solution was fairly accelerated by copper but in the presence of HS-21 the rate of that was well depressed.
    And also the copper absorbed in the dyed fabric was not removed by HS-21 in the bleaching process. The effect of that was due to an interaction between the copper and HS-21.
    Based on the Spectroscopic measurements, it was assumed that HS-21 is forme complexes with copper in an aqueous solution.
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