친수 및 소수화한 의류소재의 특성이 고형오구의 세척성에 미치는 영향 -의류소재의 표면특성-

강인숙,Kang, In-Sook 한국섬유공학회 2007 한국섬유공학회지 Vol.44 No.1

This study was preliminary part to investigate the influence of surface characteristics of tektite materials finished with hydrophilic and hydrophobic chemicals on detergency of particulate soil. The hydrophilic and hydrophobic finish for PET fabric were treated with polyester, silicone and fluorine organic compound or resin respectively. Porosity, coefficient of friction and surface roughness of fabric were measured as surface structures of textile, and water up take, water vapor transport, wettability of fabric and contact angle to determine hydrophilicity of material. The porosity of polyester fabric treated with hydrophilic and hydrophobic agent were slightly decreased with increasing concentration of chemicals regardless of chemical types. And influence of finishing concentration of chemicals on coefficient of friction and surface roughness of fabric was small. The affinity to moisture such as water up take, water vapor transport, and wettability of fabric was increased with increasing concentration of hydrophilic chemicals and decreased with decreasing concentration of hydrophobic chemicals. The contact angle of solution on treated fabric were decreased with hydrophilic treatment but increased with hydrophobic finish. The whole results of surface structures and hydrophilicity of material exhibited a similar behavior in fabric treated with hydrophilic agent, but slightly differed in fabric treated with hydrophobic agent.

지용성 오구 혼합이 O₂ 플라즈마 처리 Poly(ethylene terephthalate) 필름의 고형 오구 부착에 미치는 영향

강인숙,Kang, In-Sook 한국섬유공학회 2015 한국섬유공학회지 Vol.52 No.4

The effect of the addition of oily soil to particulate soil dispersions on the adhesion of ${\alpha}-Fe_2O_3$ particles to poly(ethylene terephthalate) (PET) films treated by $O_2$ plasma was investigated as a function of the ionic strength, surfactant concentration, and surfactant type. After $O_2$ plasma treatment, the contact angle of the film decreased with increasing treatment time in water and surfactant solutions. In general, the adhesion of the particle to the PET film was relatively higher with the addition of oily soil to the particulate dispersion than for the single-particulate dispersion solution. In addition, the adhesion of the particle to the film was higher in the dispersion solution mixed with polar rather than nonpolar oily soil. The effect of mixing oily soil into the particulate dispersions on the adhesion of the particle to the film resulted in no significant change in the concentration of the surfactant and ionic strength regardless of the treatment condition. The adhesion of the ${\alpha}-Fe_2O_3$ particles to the PET film was related to the contact angle and surface roughness; the coefficients of correlation between the adhesion of the particle to the film and the surface roughness and contact angle were over 0.9.

친수 및 소수화한 의류소재의 특성이 고형오구의 세척성에 미치는 영향 - 계면활성제의 흡착 및 섬유기질의 ${\zeta}Potential$ -

강인숙,Kang, In-Sook 한국섬유공학회 2006 한국섬유공학회지 Vol.43 No.6

The steric stability by adsorption of surfactant to the labric and interfacial electrical condition such as the ${\zeta}-potential$ and the interaction energy between substrate and particle of fabric treated with hydrophilic and hydrophobic chemical was examined as a fundamental environment of detergency of particulate soil. The hydrophilic and hydro-phobic finish for PET fabric were treated with polyester, silicone and fluorine organic compound of resin respectively. The adsorption of anionic and nonionic surfactant to fabric were measured by abbott method and HPLC analysis. And the ${\zeta}-potential$ of particles and fabric were measured by microelectrophoresis and streaming potential method, respectively. The potential energy of interaction between u·Fe201 particle and fiber were calculated by using the heteroco-agulation theory for a sphere-plate model. The adsorption of anionic and nonionic surfactant to polyester fabric was largely influenced by concentration of surfactant and ionic strength as compared to concentration of finishing agent and adsorption time of surfactant regardless of chemicals. And the adsorption of surfactant to fabric treated with hydrophobic chemicals was higher than fabric treated with hydrophilic chemicals. With the increase of concentration of finishing agent, the ${\zeta}-potential$ of fiber treated with hydrophilic and hydrophobic chemical were converted from negative to positive regardless of chemicals. And the potential energy of interaction between ${\alpha}-Fe_2O_3$ particle and fiber were adhesion force in fabric treated with hydrophobic chemical and repulsion force in fabric treated with hydrophilic chemical.

초임계 이산화탄소를 이용만 우렁쉥이 껍질로부터 ${\beta}$-carotene 추출

강인숙,윤현석,박지연,전병수,Kang, In-Sook,Youn, Hyun-Seok,Park, Ji-Yeon,Chun, Byung-Soo 한국생물공학회 2006 KSBB Journal Vol.21 No.3

본 연구는 초임계 이산화탄소와 에탄올 보조용매를 사용하여 천연물질에 존재하는 기능성 물질을 효율적으로 분리하여 식품 및 의약산업에 이용할 수 있는 천연 기능성 소재를 제공할 수 있는 가능성을 보여 주었다. 초임계 이산화탄소와 보조용매 에탄올 3 mL/min를 사용하여 멍게로부터 ${\beta}$-carotene을 추출하기 위한 최적의 조건은 $35^{\circ}C$, 350 bar이었으며, 추출물질을 흡착하는 흡착칼럼으로부터 ${\beta}$-carotene을 회수하기 위한 rinse 용매는 methanol이 우수한 결과를 나타내었다. 따라서 초임계 이산화탄소를 사용한 멍게 껍질로부터 ${\beta}$-carotene 추출 공정이 상업화될 경우 기존의 재래식 유기용매 추출법에서 회수한 것에 비해 잔존 유기용매가 없고 환경 친화적 공정으로 식품, 의악품 산업 등의 고품질 원료 소재로 이용될 수 있을 것으로 사료된다. Dried raw Ascidians(Halocynthia roretzi) shells harvested from fish farms in southern coast area in Korea were used to extract ${\beta}$-carotene using supercritical carbon dioxide($SCO_2$) and with ethanol as a co-solvent at the range of temperatures and pressures, from 25 to $65^{\circ}C$ and 100 to 350 bar respectively. The size of the dried Ascidians shells was around $850{\mu}m$. The system used this study was a semi-batch flow type high pressure unit. The efficiency of ${\beta}$-carotene extraction using $SCO_2$ with and without co-solvent, ethanol, influenced to pressure and temperature changes. The highest solubility of ${\beta}$-carotene in $SCO_2$ was 1.35 mg/g for ${\beta}$-carotene at $35^{\circ}C$ and 350 bar. With addition of 2(v/v%) ethanol the recovery of ${\beta}$-carotene was 93%. As a result of using n-hexane and methanol for rinse, at $35^{\circ}C$ and 350 bar the amount of ${\beta}$-carotene by methanol rinse was 5 times higher than that of n-hexane rinse.

음/비이온 혼합 계면활성제 용액에서 계면 전기적 현상이 $\alpha-Fe_{2}O_3$ 입자의 분산안정성에 미치는 영향

강인숙,정선영,Kang In Sook,Jung Sun Young 한국섬유공학회 2004 한국섬유공학회지 Vol.41 No.6

This study was designed to investigate the relationship between the electro kinetic phenomena such as $\zeta-potential$ of particle and interaction energy between two particles and the dispersion stability. The $\zetapotential\; of\; \alpha­Fe_2O_3$ Fez03 particles and interaction energy between two particles in anionic/nonionic surfactant mixed solution was relatively higher than that of anionic and nonionic surfactant single solution, and exhibited a maximum at $0.1\%$ surfactant concentration and $1\times10^{-3}$ ionic strength. Our previous research found that the suspending power of anionic/nonionic surfactant mixed solution was relatively higher than that of anionic and nonionic surfactant single solution, and maximum at $0.1\%$ surfactant concentration and $1\times10^{-3}$ ionic strength. Although some deviation exists, the general trend of the dispersion stability of particles was similar to that of electro kinetic phenomena such as $\zeta-potential$ of particle and interaction energy between two particles regardless of solution conditions. Therefore, it could be considered that the dispersion stability of particles was well related with electro kinetic phenomena such as $\zeta-potential$l of particle and interaction energy of two particles.

Poly(imide) 필름의 친수 및 소수 표면특성이 필름의 고형입자 부착과 제거에 미치는 영향

강인숙,Kang, In-Sook 한국섬유공학회 2015 한국섬유공학회지 Vol.52 No.4

The effects of hydrophilic and hydrophobic surface properties of poly(imide) (PI) films on the adhesion and removal of particles to/from the films were investigated as functions of ionic strength, surfactant concentration, and surfactant type. An $O_2$ plasma treatment and a two-step $O_2+CHF_3$ plasma treatment were used to impart hydrophilicity and hydrophobicity to the PI film, respectively. The contact angle of the PI film treated with $O_2$ plasma decreased with increasing treatment time, while that of PI film treated with $O_2+CHF_3$ plasma increased. Further, surfactant adsorption was higher in the PI film treated with $O_2+CHF_3$ plasma than in the film treated with $O_2$ plasma. Generally, the effects of hydrophilic and hydrophobic surface properties of the films on the adhesion and removal of particles were minimal, while the influence of surfactant concentration on the adhesion and removal of particles was stronger than the effect of other solution parameters. The adhesion of ${\alpha}-Fe_2O_3$ particles to the films and their removal from the films were well correlated with the contact angle and the surfactant adsorption.

음/비이온 혼합계면활성제 용액에 있어 계면활성제의 흡착에 의한 입체적 안정화가 고형오구의 세척성에 미치는 영향 (II) -직물에의 계면활성제 흡착과 직물에의 고형입자의 부착-

강인숙,Kang, In-Sook 한국섬유공학회 2005 한국섬유공학회지 Vol.42 No.3

The steric stability by adsorption of surfactant to the fabric was examined as a fundamental variable in the adhesion of $\alpha-Fe_{2}O_{3}$ particle to fabric in an anionic/nonionic surfactant mixed solution. Generally, the adsorption of surfactants to the fabric was higher in anionic/nonionic surfactant mixed solution than in either anionic or nonionic surfactant solution, and the adsorption of anionic surfactant was higher than that of nonionic surfactant regardless of solution condition. The adhesion of $\alpha-Fe_{2}O_{3}$ particle to PET fabric was lower in anionic/nonionic surfactant mixed solution than in single surfactant solution. And the adhesion of $\alpha-Fe_{2}O_{3}$ particle to PET fabric was minimum at $0.1\%$ surfactants concentration, and increased with ionic strength. Although some deviations exist, the adhesion of $\alpha-Fe_{2}O_{3}$ particle to PET fabric decreased with increasing adsorption of nonionic surfactant to fabric, However the correlation between adsorption of anionic surfactant to particle and the adhesion of particle to fabric was relatively insignificant.

음/비이온 흔합계면활성제 용액에 있어 계면활성제의 흡착에 의한 입체적 안정화가 고형오구의 세척성에 미치는 영향 (I) -고헝입자에의 계면촬성제 흡착과 직물에서의 고헝입자의 제거 -

강인숙,정선영,Kang, In-Sook,Jung, Sun-Young 한국섬유공학회 2005 한국섬유공학회지 Vol.42 No.3

This study was designed to investigate the relationship between adsorption of surfactant to $\alpha-Fe_{2}O_{3}$ particles and removal of the particles from fabric in anionic/nonionic surfactant mixed solution. The adsorption of anionic surfactant to particle increased with increasing surfactants concentration but the influence of surfactant concentration was small in the case of nonionic surfactant. The adsorption of nonionic surfactant to particle increased with decreasing ionic strength, while the influence of ionic strength on the adsorption of anionic surfactant to particle was small. The removal of $\alpha-Fe_{2}O_{3}$ particle from PET fabric was relatively higher in anionic/nonionic surfactant mixed solution than in both single surfactant solutions, where it increased with decreasing ionic strength and surfactant concentration. Generally the removal of $\alpha-Fe_{2}O_{3}$ particle from PET fabric increased with increasing adsorption of nonionic surfactant to the particle. Although some deviations exist, the removal of $\alpha-Fe_{2}O_{3}$ particle from PET fabric in anionic/nonionic surfactant mixed solution was related not to the adsorption of anionic surfactant to the particle but to the adsorption of nonionic surfactant.

O₂ 플라즈마 처리에 따른 필름기질의 친수 및 소수화 상반효과

강인숙,Kang, In-Sook 한국섬유공학회 2013 한국섬유공학회지 Vol.50 No.4

We studied the effects of $O_2$ plasma on the hydrophilic/hydrophobic contrast of film substrates. PET (polyethylene terephthalate) and FEP (fluorinated ethylene propylene) films were treated by $O_2$ plasma, and the surface of the films was investigated using atomic force microscopy(AFM), X-ray photoelectron spectroscopy (XPS), and contact-angle and surface energy measurements. Surface energies were calculated from the measured contact angles between several solutions and the films based on the geometric mean and Lewis acid-base method. The contact angle of PET films treated by $O_2$ plasma decreased with increasing treatment time in water and surfactant solution, and surface energy increased with increasing polar component of surface tension of the film. In contrast, the contact angle of the $O_2$ plasma-treated FEP film decreased, and surface energy decreased with decreasing nonpolar component of surface tension of the film.

Poly(ethylene Terephthalate) 필름의 표면 모폴로지가 고형오구의 세척성에 미치는 영향 (III)

강인숙,Kang, In-Sook 한국섬유공학회 2011 한국섬유공학회지 Vol.48 No.6

The effect of surface morphology of poly(ethylene terephthalate) (PET) film on the detergency of particulate soil was investigated as functions of surfactant concentration, ionic strength, electrolytes type, washing time and particle size. The PET surface film was modified with NaOH and dimethylformamide (DMF) for different times. Generally, the removal of particles from the PET film treated with NaOH and DMF was relatively higher than that of nontreated film in both nonyl-phenol polyoxyethylene ether and sodium dodecyl-benzene sulfonate solution. The removal of particles from the film increased with increasing concentration of surfactant and ionic strength regardless of treated condition, but the effects of electrolytes type, washing time and particle size on the removal of particle from the PET film varied with treated condition such as chemical type (NaOH or DMF) and treatment time. The removal of ${\alpha}-Fe_2O_3$ particles from the PET film treated with NaOH and DMF were better related with surface energies than surface roughness and surface area. The correlation coefficient between the removal of particle from the film and adsorption of surfactants to film was 0.9.