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진공청소기 粉塵을 모델로 한 固形汚染의 세척성에 관한 연구
김성련,강인숙 한국의류학회 1989 한국의류학회지 Vol.13 No.3
This study has treated the effects of fiber, surf actants, temperature, surfactant concentration, pH, electrolyte, fatty acid contents and mechanical force on the removal of particulate soil from fabric, vacuum cleaner dirt was used as model particulate soil. The fabrics were soiled with mixture of vacuum cleaner dirt and fatty soil, and washed in Terg-O-tometer. The detergency was evaluated by measuring reflectance of a fabric before and after washing. The results were as follows. 1. The fiber type showed a different pattern of soil removal with surfactants. In general, particulate soil removal increased in the following order Acetate > PET. Nylon > Cotton. Particulate soil removal, which is affected by the surfactant type, increased in the following order NPE(EO)_10 ≥ Soap > SLS > DBS > Tween 80. 2. The influence of temperature on the particulate soil removal was very complex because efficiency of removal was varied with surfactant and fiber types. The washing effiency of NPE(EO)_10 was highest at around 40℃ and 60℃ with cotton and PET but the washing efficiency of DBS was the highest at 60℃ with cotton, decreased monotonously with increasing temperature with PET. 3. The detergency of particulate soil increased with increasing surfactant concentration at relatively low concentration and then levelled off above some optimum concentration. 4. The removal of particulate soil increased with increasing pH and mechanical force. 5. Effect of electrolyte on the particulate soil removal was depended on the concentration of the surfactant. At low concentration of surfactant, addition of electrolytes improved soil removal but above the some concentration no effect was observed. At high concentration of surfactant, Vie., 0.6 %, the maximum washing effect is reached without added electrolyte. These result indicate that added electrolyte only influence the adsorption of surfactant on the soil and fiber 6. Fatty acid content in the soil did not influence on particulate soil removal without regard to surfactants.
Polyester직물에의 Hematite 입자의 부착과 제거에 관한 계면 전기적고찰 : 제2보 Part 2
김성련,강인숙 한국의류학회 1995 한국의류학회지 Vol.19 No.5
Effect of interfacial electrical conditions such as, the ζ potential of PET fiber and α-Fe_20_3 particles, the stability parameter and potential energy of interaction on adhesion of α-Fe_20_3 particles to PET fabric and their removal from the fabric, were investigated as functions of pH, electrolyte and ionic strength. The stability parameter, potential energy of interaction between α-Fe_20_3 particles and PET fabric were calculated by using the heterocoagulation theory for a sphere-plate model. The adhesion of α-Fe_20_3 particles to PET fabric and their removal from PET fabric were carried out by using water bath shaker and Terg-O-Tometer under various solution conditions. The adhesion of α-Fe_20_3 particles to the PET fabric and the removal of α-Fe_2O_3 particles from the PET fabric were biphasic and were maximum and minimum at pH 7∼8, respectively. With high pH and polyanion electrolytes in solution, the adhesion of α-Fe_20_3 particles to the PET fabric was low but effects of electrolytes on the removal of α-Fe_20_3 particles from the PET fabric was small. The adhesion of α-Fe_2O_3 particles to the PET fabric and the removal of α-Fe_20_3 particles from the PET fabric were biphasic, and were lowest and highest at the ionic strength 1×10exp(-3), respectively. The adhesion of α-Fe_20_3 particles to PET fabric was well related with the interfacial electrical conditions; it was negatively correlated with the ζ potentials of α-Fe_20_3 particles of its absolute value, the stability parameter and the maximum of total potential energy, while, the adhesion was not related with the ζ potentials of PET fiber itself. Therefore, the primary factor determining the adhesion of α-Fe_20_3 particles to PET fabric may be the stability of dispersed particles caused by the electrical repulsion of particles. The removal of α-Fe_20_3 particles from PET fabric was not related to such interfacial electrical conditions as the ζ potentials of PET fiber, the stability parameter and the maximum of total potential energy but removal was related to ζ potential of α-Fe_20_3 particles.
Graft 重合에 依한 苧麻의 改質 : 第1報 Cerium鹽을 開始劑로한 Vinyl Monomer의 Graft重合
金聲連 忠南大學校 1969 論文集 Vol.8 No.-
Acrylonitrile, methyl acrylate, and vinyl acetate but not styrene was granted onto ramie fiber by following a two step method. Ceric ammonium nitrate was used as an initiator. Ramie fiber was treated with a catalyst solution for an hour, filtered and washed with water, then the fiber was granted in the mixture of water and monomer. The results of this study are; Concentration of nitric acid in the solution of catalyst was proportionally effected on grafting whereas little was found in the acid in monomer solution. Homopolymer formation was greatly reduced by this two step graft polymerization method. The efficiency of graft polymerization showed in this order of : VA<AN<MA