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장병호,남성우,판본종선,Jang, Byeong-Ho,Nam, Seong-U 한국섬유공학회 1987 한국섬유공학회지 Vol.24 No.1
The reaction of Wool with a disulfide-containing crosslinking agent, i.e. bis(${\beta}$-isocyanatoethyl) disulfide (BIED), was studied in an attempt to obtain disulfide-enriched wool. BIED was reacted with wool both monofunctionally and bifunctionally to from branches and crosslinks, respectively. The crosslinking efficiencies in the percent ratio of the number of the crosslinks formed to the total disulfide introduced, which were obtained before and after reduction, ranged from 37% to 68%. The setting behaviors of several samples such as BIED-treated, untreated, hexamethylene diisocyanate-treated, and butyl isocyanate-treated wool were studied under the absence and the presence of a reducing agent. Rearrangement of secondary bonds faciliated by cleavage of crosslinks as well as rearrangement of crosslinks itself seems to play an important role in the set stability.
장병호,남성우,판본종선,Jang, Byeong-Ho,Nam, Seong-U 한국섬유공학회 1987 한국섬유공학회지 Vol.24 No.2
In order to improve the shrik resistance of wool, the wool fabric was treated with polyurethane derivative and polyurethane dispersion etc. and the following results are drawn; (1) The optimum condition for the shrink resistance of wool fabric was polyurethan concentration of about 80g/$\ell$, PH of 7, the curing temperature of about 140$^{\circ}C$, and the curing time of 1 minute. (2) The physical properties such as the tensile strength and elongation, crease recovery, handle, tearing strength, and pilling were not lowered by the above treatment. (3) The affinity for acid dye of treated wool fabrics did not relatively changed.
Development of Surface Plasmon Resonance Immunosensor for the Determination of Methyl Parathion
田中 真,由美,阪本 一平,中嶋 秀,宗 伸明,中野 幸二,CHUNG, Duck-Hwa,今任 稔彦 The Japan Society for Analytical Chemistry 2007 分析化學 Vol.56 No.9
<P>A surface plasmon resonance (SPR) sensor for the determination of methyl parathion (MP) was developed using an indirect competitive immunoassay. A sensor chip was prepared by immobilizing a MP-BSA conjugate on a gold film on the sensor chip, followed by blocking with BSA to prevent the non-specific adsorption of MP and an anti-MP antibody onto the unmodified surface of the sensor chip. An evaluation of the adsorption equilibrium of MP-BSA onto the sensor chip by measuring the SPR angle shift revealed that the adsorption equilibrium was expressed by a Langmuir-type adsorption isotherm equation. The adsorption constant and the adsorbed amount of MP-BSA onto the sensor chip were found to be 5.0 × 10<SUP>5</SUP> M<SUP>−1</SUP> and 0.95 ng/mm<SUP>2</SUP>, respectively. An MP solution (1∼5000 ppb) containing 60 ppm anti-MP antibody was introduced into the SPR sensor chip, and then the SPR angle shift was measured. The detection limit, defined as the angle shift of 85% for the blank, was found to be 10 ppb. The anti-MP antibody bound to the MP-BSA conjugate on the sensor chip was able to be dissociated by introducing an HCl-glycine solution (pH 2) into the sensor chip. Duplicate measurements with a single sensor chip were possible for at least 20 times.</P>