Journal of Fiber Science and Technology
Online ISSN : 2189-7654
ISSN-L : 2189-7654
Volume 72, Issue 8
Journal of Fiber Science and Technology
Displaying 1-3 of 3 articles from this issue
Original Articles
Transactions
  • Toshihiro Fujii, Yoshikazu Higa, Takafumi Okazima, Yumiko Ito, Michihi ...
    2016 Volume 72 Issue 8 Pages 166-171
    Published: August 10, 2016
    Released on J-STAGE: August 10, 2016
    JOURNAL OPEN ACCESS

    Recently, we have reported that keratin film consisting of human hair proteins is a useful substitute for hair samples to evaluate the friction and adsorption by processing commercial shampoo and conditioner products. The frictional coefficient of the keratin film whose MIU value was 7–8 fold more than that of a hair strand, was decreased after undergoing shampoo-conditioner treatment. Since the commercial products contained a number of ingredients more than thirty, the compound to affect the friction remained unclear. Thus, we designed and prepared the model shampoo (MS) and conditioner (MC), and examined their effects on the friction of the keratin by a KES system. Like commercial products, the MIU value was significantly decreased when the keratin film was treated with MC and MS+MC. Among the candidate substances, stearyltrimethylammonium chloride (STAC) and stearylalcohol were efficient to decrease the MIU value of the keratin film. The degree of the MIU decrease was dependent on the concentration of STAC. The adsorption of STAC to the keratin film was detected using a fourier-transform infrared spectroscopy (FT-IR). The peak-heights at 2855 and 2930 cm­-1 were proportional to the amount of STAC added. These results suggest that the binding of STAC will result in some changes to the film surface and reduce the MIU values in a dose-response. The treatments of the dimethyl silicone and aminopropyl dimethicone also caused the decrease of the MIU values and their adsorption was detected using an energy dispersive X-ray spectrometry (EDS). Taken together, this combination will be an effective procedure to screen the material that affects tactile sensation of hair.

    Download PDF (653K)
  • Chiaki Tanaka, Yoshinari Yui, Akira Isogai
    2016 Volume 72 Issue 8 Pages 172-178
    Published: August 10, 2016
    Released on J-STAGE: August 10, 2016
    JOURNAL OPEN ACCESS

    Cotton fabrics were oxidized with sodium dichloroisocyanurate (SDIC) and catalytic amounts of 2,2,6,6-tetramethylpiperidin-1-oxyl (TEMPO) and NaBr in water at pH 9 or 10 and temperatures of 15–40 ̊C for 5–15 min. The TEMPO-oxidized fabrics were post-treated with NaClO2,H2O2 and NaBH4. The oxidized cotton fabrics thus obtained had higher carboxylate contents and higher viscosity-average degrees of polymerization(DPv), compared with the conventional TEMPO/NaBr/NaClO or TEMPO/NaClO/NaClO2 system when the oxidation was carried out under similar conditions. Because SDIC gradually releases HOCl in water, forming NaOCl at pH 10, this NaClO is preferentially consumed for oxidation of C6-primary hydroxyl groups of cellulose, rather than cellulose depolymerization or formation of C2/C3 ketones. As a result, the decrease in whiteness of the oxidized cotton fabrics without post NaBH4 treatment after heating was lower than those prepared with TEMPO/NaBr/NaClO system. Moreover, the TEMPO/NaBr/SDIC oxidation of cotton fabrics can be carried out in water at pH 9, which leads to the same carboxylate content as that prepared in water at pH 10 but higher DPv. Thus, the TEMPO/NaBr/SDIC is an efficient and promising system for oxidation of cotton fabrics with high carboxylate contents and high DPv values, suitable for functionalization of cotton fabrics for clothes and underwear.

    Download PDF (811K)
Technical Paper
  • Yuan Gao, Qianqian Liu, Yingchao Ji, Ying Wang, Qiuhong Wang, Hong Li
    2016 Volume 72 Issue 8 Pages 179-183
    Published: August 10, 2016
    Released on J-STAGE: August 10, 2016
    JOURNAL OPEN ACCESS

    Reactive disperse dye was synthesized using 2-[(4-Aminophenyl)sulfonyl]ethyl hydrogen sulfate as diazo component, and 2-hydroxy-1, 4-naphthoquinone for coupling component. The molecular structure of reactive disperse dye was confirmed by infrared spectrum, ultraviolet spectrum,1HNMR,13CNMRand mass spectrographic analysis, molecular formula of the dye is C18H15N2O9S2. Through the contrast experiments,the study analyzes the dyeing performance of the polyester/cotton blended fabrics dyed with reactive dye and disperse dye(using traditional dyeing methods) and reactive disperse dye .The fabrics dyed with reactive disperse dye, its rubbing fastness was up to 4–5, washable color fastness was up to 4–5. Both of them are superior compared with the traditional dyeing methods.

    Download PDF (685K)
feedback
Top