All issues
Successor
Volume 42, Issue 9
Displaying 1-14 of 14 articles from this issue
- |<
- <
- 1
- >
- >|
-
YOOKO YANAGI1986 Volume 42 Issue 9 Pages P344-P348
Published: September 10, 1986
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSDownload PDF (1026K) -
HISAO MIYASHITA1986 Volume 42 Issue 9 Pages P349-P352
Published: September 10, 1986
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSDownload PDF (988K) -
YASUJI KAWAUCHI1986 Volume 42 Issue 9 Pages P353-P358
Published: September 10, 1986
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSDownload PDF (2166K) -
KOZO SHIMAZAKI1986 Volume 42 Issue 9 Pages P359-P365
Published: September 10, 1986
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSDownload PDF (1165K) -
KINZO ISHIKAWA1986 Volume 42 Issue 9 Pages P366-P371
Published: September 10, 1986
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSDownload PDF (1225K) -
KAZUO MIHIRA1986 Volume 42 Issue 9 Pages P372-P377
Published: September 10, 1986
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSDownload PDF (1288K) -
SHIGEO KOBAYASHI1986 Volume 42 Issue 9 Pages P378-P383
Published: September 10, 1986
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSDownload PDF (1158K) -
Toru Masuko, Ichiro Morita, Koichiro Yonetake1986 Volume 42 Issue 9 Pages T491-T498
Published: September 10, 1986
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSPoly (tetramethylene terephthalate) (4GT)-poly (tetramethylene oxide) (PTMO) block copolymer films were annealed at various temperatures ranging from 130-190°;C or drawn at 25°C with draw ratios ranging from 1.0-7.0. The morphological changes in these films have been investigated by x-ray diffraction. In the annealed sample systems, the long period (Lp) and the crystalline size (l_??_) increase with increasing annealing temperature (Ta). No triclinic β form of the 4GT crystals is observed in the drawn films in the experimental range of draw ratios, although triclinic α form of an unoriented 4GT homopolymer film was transformed into the triclinic form with a small elongation of the film. The microfibril model can be applied to the deformation process of this block copolymer. The small-angle x-ray scattering patterns of the relaxed samples show four point scattering diagrams. The microfibrils in the relaxed films may be rotated or bent by contraction forces of extended intermicrofibrilar-tie chains.View full abstractDownload PDF (1155K) -
Koichiro Yonetake, Ichiro Morita, Toru Masuko1986 Volume 42 Issue 9 Pages T499-T506
Published: September 10, 1986
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSPoly (tetramethylene terephthalate) (4GT)-poly (tetramethylene oxide) (PTMO) block copolymer films were either annealed at various temperatures ranging from 130-190°C or drawn at 25°C with the draw ratios ranging from 1.0-7.0. These films were dyed at 80°C with C. I. Disperse Yellow 7 (Y-7) and p-Aminoazobenzene (PAAB). The equilibrium dye sorption (Mo) of Y-7 and PAAB by the annealed films increased with an increase in the crystallinity (Cv). Mo of Y-7 by the drawn films increased during drawing; similarly the Cv values of the drawn films slightly increased with draw ratios (λ). The change in Mo of these disperse dyes was analyzed in terms of the mosaic-block dyeing model by use of fine structural data of the block copolymer films. It was suggested that the change in Mo with increasing Cv depended on the dyeability of amorphous side region between the crystalline cores located parallel to the molecular axis. In the case of the drawn films, the increase in Mo of Y-7 with λ is ascribed to the increase in the fraction of inter-fibrilar tie chains in the side region; these chains would have a strong affinity particularly to a long rodlike dye molecule such as Y-7. The increase in Ms is probably associated with the orientation of the amorphous chain in the side region.View full abstractDownload PDF (571K) -
Isao Tabata, Toru Shimizu, Teruo Hori1986 Volume 42 Issue 9 Pages T507-T513
Published: September 10, 1986
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSPhysical states were determined for binary mixtures of four anthraquinone disperse dyes with similar chemical constituents. Furthermore, the influence of mixing of such dyes on the dye vapor pressure and the equilibrium sorption on poly (ethylene terephthalate) (PET) film was investigated. As a result, it was found that the individual vapor pressure and equilibrium dye sorption decrease when solid-solution of the dye mixture is formed.View full abstractDownload PDF (399K) -
Yoshio Honma, Noriko Choji, Mikio Karasawa1986 Volume 42 Issue 9 Pages T514-T520
Published: September 10, 1986
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSCellulose triacetate films were dyed with C. I. Disperse Red 17 at 80°C and their photofading behavior was investigated. The dyed samples with various dye concentration distributions along their thicknesses were exposed to a high pressure mercury lamp. It was supposed that photofading rate is mainly influenced by the dye concentration distribution.
To explain this correlation, the laminated-film exposure method was adopted. When the dye distribution is uniform, the time required to a certain fading percentage increases exponentially with film thickness. By extrapolation of the relation to zero thickness, the fading is assumed to occur in zero-order reaction at the surface of the sample. Then, the empirical formula for fading rate was derived. The formula suggests that the concentration-fading rate relation could be straight or curved depending on the parameters included.View full abstractDownload PDF (460K) -
Ryuichi Akiyama, Toshihiro Iguro, Sei Uchiyama, Hideo Noshi, Juzo Hoso ...1986 Volume 42 Issue 9 Pages T521-T527
Published: September 10, 1986
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSThe local irregularities of a fabric were obtained by measuring peak intensities of the diffraction pattern. Numerical analyses have predicted that these peak intensities are given uniquely as a function of the statistical deviations of the irregularities of a yarn coarseness and a yarn arrangement, σα and σβ, as a parameter of the ratio (R) between the yarn coarseness and the yarn spacing. Experimentally, the combinations of the above two deviations, were determined over a range of 4 to 10% within an accuracy of ±1% by using commercial acetate and cotton fabrics. The experimental results of total deviations of these two irregularities were in good agreement with those obtained from manual measurements. Correlation between the combination of two deviations and visual sensory property was also made.View full abstractDownload PDF (1115K) -
Guo Ping Chen, Mizuho Kinoshita, Ryuichi Akiyama, Sei Uchiyama1986 Volume 42 Issue 9 Pages T528-T533
Published: September 10, 1986
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSThe uniaxial extension behavior of a woven fabric has been observed using optical diffraction method. By measuring intensity distributions, we have obtained the average spacings between neighboring two yarns within an accuracy of the order of 1% and their local irregularity as a statistical deviation over a range of 2 to 8% in the warp and filling directions. The point of inflexion on the load-extension curve, which indicates the initial point of the yarn extension, has been determined directly by detecting the maximum of the diffracted intensity as a function of the yarn extension. The first part of the extension has also been analyzed by the crimp interchange model.View full abstractDownload PDF (1119K) -
Izumi Fumoto1986 Volume 42 Issue 9 Pages T534-T537
Published: September 10, 1986
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSSilk fibroin (Antheraea pernyi and Bombyx mori) were treated with very dilute hydrochloric acid (0.001N-0.01N). After the treatment, crystallinity determined by means of X-ray diffraction as well as the amount of amorphous region estimated based on the specific gravity was increased, but the weight decrease was not observed. The absolute values of zeta-potential of the treated silk fibroins had a tendency to become larger than those of the untreated fibroins, and the isoelectric points of the fibers shifted to the alkaline side after the treatment.
From the facts described above, it may be suggested that the semicrystalline region of the treated silk fibroin is partially transformed to amorphous or crystalline portion, because of the absorption of hydrochloric acid and the unravelling of the entanglement of the fiber molecules due to the ionization of side chains of molecules by the attached hydrogen ions.
The exhaustion of acid dyes by the treated silk fibroin in the finite dye bath is more promoted than by the untreated fibroin. This might be attributed to the readily cationized amino groups. These structural and dyeability effects resulting from the treatment are more significant for Antheraea pernyi fibroin in comparison with Bombyx mori fibroin.View full abstractDownload PDF (322K)
- |<
- <
- 1
- >
- >|