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Synthesis and Characterization of Naphthalenesulfonic Formaldehyde Condensates for Improving the Solubility of C.I. Reactive Blue 19 in Alkali Liquor
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作者 南旭莹 姚玉华 邵建中 《Journal of Donghua University(English Edition)》 EI CAS 2008年第6期649-653,共5页
The solubility of C.I. reactive blue 19 in aqueous alkali is poor, so it isn't used to dye cellulosic fiber in cold pad-batch dyeing. In order to improve the solubility of this dyestuff in alkali liquor, the right... The solubility of C.I. reactive blue 19 in aqueous alkali is poor, so it isn't used to dye cellulosic fiber in cold pad-batch dyeing. In order to improve the solubility of this dyestuff in alkali liquor, the right dispersants will be needed. A series of condensates are synthesized by changing the synthesis conditions such as the ratio of naphthalenesulfonic (N) to formaldehyde (F), acidity, and their compositions are confirmed by MS spectrum. It is found that in acidity scope of 20%-24% and the ratio of N to F 1∶0.33, the synthesized condensates can efficiently improve the solubility of C.I. reactive blue 19 in alkali liquor. In addition, the influences of the condensates on the exhaust dyeing and the cold pad-batch dyeing are tested. 展开更多
关键词 C. I. reactive blue 19 solubility in alkali liquor condensates of na phthalenesul fonic- formaldeh yde exhaust dyeing cold pad-batch dyeing
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GRAFTING ONTO WOOL V.RADIATION-INITIATED GRAFTING OF ACRYLIC ACID ONTO WOOL FIBER
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作者 赵新 李崔 +2 位作者 周自雄 王天雕 陈善明 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 1994年第1期73-79,共7页
This paper deals with graft copolymerization of acrylic acid (AA) onto Xinjiang fine wool.fiber in aqueous medium initiated by gamma rays. Graft copolymerization was carried out by themutual irradiation method in limi... This paper deals with graft copolymerization of acrylic acid (AA) onto Xinjiang fine wool.fiber in aqueous medium initiated by gamma rays. Graft copolymerization was carried out by themutual irradiation method in limited air. Percent grafting and percent efficiency have been deter-mined as a function of total dose, dose rate, concentration of monomer, wool weight and reactiontemperature. Graft copolymers are characterized with infrared (IR) spectroscopy, scanning elec-tron microscopy (SEM), and X--ray diffractometer. Properties of the grafts were studied, and compared with the virgin fiber. 展开更多
关键词 Graft copolymerization Gamma radiation Properties of wool fiber alkali and acid solubility
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