Sen'i Gakkaishi

STUDIES ON THE PILLING TENDENCY

(1) PHENOMENA OF THE PILLING (2) GROWTH OF THE PILLING

Ishio Tsujimoto, Nobuo Motoji

1964 Volume 20 Issue 12 Pages 763-772
Published: December 10, 1964
Released on J-STAGE: November 28, 2008

DOIhttps://doi.org/10.2115/fiber.20.763

JOURNAL FREE ACCESS

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ONE GRAPHICAL METHOD FOR OBTAINING THE FRICTIONAL INDEX FROM THE BELTING EQUATION

Eiichi Kuze, Teruo Furushima

1964 Volume 20 Issue 12 Pages 773-777
Published: December 10, 1964
Released on J-STAGE: November 28, 2008

DOIhttps://doi.org/10.2115/fiber.20.773

JOURNAL FREE ACCESS

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On the fibre or yarn sliding around a cylinder, the relation of the initial tension to the final tension is given by the following equation (i. e. belting equation): where T is the final tension of fibre or yarn, T₀ is the initial tension of fibre or yarn, θ is the lapping angle of fibre or yarn against the cylinder, ρ is the radius of the cylinder, N is the frictional index, a is the constant. From the above equation, one method for calculating the approximate value of the frictional index is stated below.
1) The following equation is derived from the eqation (1): Let then a graph having gradient N and passing through the origin of the coordinate would be expected.
2) The method of the simplest calculation may be expressed by where x_i and y_i are the values based on the experimental data.
3) The value of dT/dT₀ can be obtained by the gradient of two consecutive points given in the experimental data. Then a method for estimating the value of T/T₀, is to obtain the mean value of T/T₀ for the two consecutive points.

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STUDIES ON VAT DYEING

(I) METHOD OF THE DETERMINATION OF SURFACE CONCENTRATION C_s, AND DIFFUSION COEFFICIENT D BY CYLINDRICAL CELLOPHANE FILM ROLL METHOD (II) INSPECTION OF THE METHOD OF DETERMINATION OF

Minoru Sekido, Ken-ichi Matsui

1964 Volume 20 Issue 12 Pages 778-790
Published: December 10, 1964
Released on J-STAGE: November 28, 2008

DOIhttps://doi.org/10.2115/fiber.20.778

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FUNDAMENTAL STUDIES ON DYEING WITH DISPERSE DYES

(XIV) ON X OF α-CH…X-DYE TYPE HYDROGEN BONDING

Yoshio Suda

1964 Volume 20 Issue 12 Pages 791-797
Published: December 10, 1964
Released on J-STAGE: November 28, 2008

DOIhttps://doi.org/10.2115/fiber.20.791

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It was previously reported by us^1)-4), that α-CH…X-Dye type hydrogen bonding plays an important role in the interaction between aminoanthraquinone type disperse dyes and ester type fibres.
In order to obtain an answer to “What is X in this bonding?”, the interaction between dyes and esters, amines and phenols are discussed in this paper, from the view point of the influence of dye-structure on (-ΔF) value.
1) In the interaction between dyes and esters, (-ΔF) values are not concerned with the number and the state of amino-group, and show constant values depending only on esters.
It means that anthraquinone makes an important contribution to the interaction, that X is anthraquinone itself and that α-CH…X-Dye type hydrogen bonding can be written over again to α-CH…A. Q. -S type hydrogen bonding. (A. Q.; anthraquinone, S; substituent)
2) In similar manner to esters, the interaction between dyes and amines can be interpreted only when X is anthraquinone itself.
3) In the interaction between dyes and phenols, (-ΔF) values depend on the dye-structures, and the dependence suggests that an important contribution can be ascribed to α-CH…X-Dye type hydrogen bonding.
In this case, a distinct answer on X can not be obtained, but it does not contradict α-CH…A. Q. -S tyde hydrogen bonding.
4) (-F) values of the interaction between anthraquinone and ester and phenol are nearly equal to those of dyes, and it means that X is anthraquinone itself.
5) From the results 1)_??_4), it is concluded that α-CH…A. Q. -S type hydrogen bonding makes a good part of contribution to disperse dyeing.

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