농도제어장치를 이용하여 면직물 전처리 공정에서 발생하는 가성소다 폐액의 재활용에 관한 연구 : 재활용 가성소다에 의한 면직물의 정련성 Scouring Ability of Cotton Fabric Treated with Recycled NaOH

이언필 한국의류산업학회 2004 한국의류산업학회지 Vol.6 No.3

This research offers recycling method of NaOH from mercerizing process of cotton fabric. The measuring system of NaOH concentration was designed for the mercerizing process and tested for various conditions which can be occurred in factory. The accuracy of the system was varied as the testing condition was changed. As the concentration of sulfuric acid used for titrating NaOH decreased, the accuracy of measuring system increased. The concentration of NaOH for waste water collected from mercerizing process was measured by 5.2%. As the ratio of newly mixed NaOH increased, moisture regain, water absorbency and whiteness of the specimen increased. The bending rigidity(B) and shear rigidity(G) decreased, as the ratio of newly mixed NaOH increased.

製絲用水 中의 몇 가지 金屬成分의 濃度變化가 繭層 Sericin 의 溶解性에 미치는 影響

李仁銓,李彦必 慶北大學校 1984 農業科學技術硏究所報 Vol.1 No.-

本 試驗의 用水의 Fe, Mn, Cu 및 Ca 이온의 變化가 繭層 Sericin의 溶解性에 미치는 影響을 알아 보고자 實施하였던 바 다음과 같은 結果를 얻었다. 1. 用水內의 鐵이온은 어느 溫度部位에 있어서나 濃度가 增加할수록 繭層 Sericin의 溶解量을 減少시켰으며 溫度가 높은 部位일수록 溶解量 減少率이 낮았다. 즉 낮은 溫度部位에서 影響이 크게 나타났다. 2. 用水內의 銅이온과 칼슘이온 및 망간이 온도 어느 溫度部位에서나 濃度가 增加할 수록 繭層 Sericin의 溶解量을 減少시켰으며 減少의 傾向은 45℃, 60℃, 80℃에 있어서는 거의 같은 影響을 미쳤으며 100℃에서 減少率이 약간 增加하는 것으로 나타났다. 3. 이들 4가지 無機이온이 繭層 Sericin 溶解性 抑制力에 미치는 影向은 Fe>Cu>Mn>Ca 順이었으며 다만 80℃, 100℃에 있어서는 Mn보다 Ca가 더 크게 影響을 미치는 것으로 나타났다. The purpose of this study is to find out influences of various concentrations of Fe, Mn, Cu and Ca ions in water on the solubility of cocoon sericin. The results obtained were as follows: The Fe ion in water reduced the solubility of cocoon sericin when the concentration increased for the temperatures tested. The decreasing rate in the solubility was lowered in high temperatures and increased in low temperatures. The increasing concentration of Cu, Ca, and Mn in water reduced also the solubility of cocoon sericin. The tendency of reduction was similar at 45℃, 60℃, and 80℃ in respect to the solubility of cocoon sericin. The percentage of reduction was small only at 100℃. In influences of these four inorganic ions on the solubility restraint of cocoon sericin were high in order of Fe, Cu, Mn and Ca. The Ca ion restrained the solubility of cocoon sericin much more than Mn ion did at 80℃ and 100℃.

연구논문 : 견운모와 맥반석을 이용한 신발용 나일론 66직물의 항균가공

이언필 ( Eon Pil Lee ),이재호 ( Jae Ho Lee ) 한국의류산업학회 2007 한국의류산업학회지 Vol.9 No.1

비닐아세테이트 코텔로머의 제조 및 계면활성(I)

이언필 ( Eon Pil Lee ),강세미 ( Se Mi Kang ),황대연 ( Dae Youn Hwang ),정영진 ( Young Jin Jung ),최해욱 ( Hae Wook Choi ),최영호 ( Young Ho Choi ),이재호 ( Jae Ho Lee ) 한국의류산업학회 2012 한국의류산업학회지 Vol.14 No.4

octanethiol and vinyl acetate telomers (R8S-nVAc) were synthesized and hydrolyzed with sodium hydroxide subsequently, 1.2-epoxyhexane was then introduced to the telomers, In addition, we prepared cotelomers of multi-alkylated nonionic surfactants with a molecular structure of xRnMA-yVA (x; hydrophobic group, y; hydrophilic group, MA; methacrylic ester, VA; vinyl alcohol, R; and alkyl group) and cross-linked with sodium tetraborate decahydrate. Their active surface properties were investigated by several techniques such as surface tension, foaming property, and emulsification power measurements. The surface tension of R8S-8.8VA decreased without the introduction of 1.2-Epoxy hexane, and the degree of emulsification and foaming abilities of R8S-8.8VA increased without the introduction of 1.2-Epoxy hexane. However, the differences were insignificant. The epoxy groups were attached to a R8S-8.8VA cotelomer with a limited variation of the active surface properties. The surface tension of 1.1R6MA-8.8VA decreased after cross-linking subsequently, the degree of emulsification and foaming abilities of 1.1R6MA-8.8VA increased after cross-linking. However, there was no clear difference between them. The B-O bonds were attached to a 1.1R6MA-8.8VA cotelomer with a limited variation of the active surface properties.

코로나 처리를 이용한 폴리에스테르 편,직물의 접착력 향상

이언필 ( Eon Pil Lee ),윤래원 ( Rae Won Yoon ),이재호 ( Jae Ho Lee ) 한국 접착 및 계면학회 2007 접착 및 계면 Vol.8 No.3

열처리 온도가 Poly(trimethylene terephthalate)(PTT) 섬유의 역학적 성질과 미세구조에 미치는 효과

정경희 ( Kyung Hui Jeong ),이언필 ( Eon Pil Lee ),이재호 ( Jae Ho Lee ) 한국의류산업학회 2013 한국의류산업학회지 Vol.15 No.6

Polytrimethylene terephthalate(PTT) offers several advantageous properties such as good tensile strength, uniformity, stiffness, toughness, UV stability, resilience, stain resistance, outstanding elastic recovery, and dyeability. The effects of annealing temperature on physical properties and the structure of PTT filaments and yarn were investigated by measuring wide-angle X-ray diffraction (WAXD), density, optical birefringence, dynamic visco elasticity, and tensile testing. The intensity of maximum tan δ decreased and the temperature of maximum tan δ shifted to a higher temperature as the annealing temperature of filaments increased; however, it shifted to a lower temperature when the annealing temperature exceeded 130oC. In addition, crystallinity, density and D-spacing of (010) crystal face increased as the annealing temperature increased. Optical birefringence and specific stress were almost constant up to 100oC and then decreased above 130oC. The shrinkage of PTT filament is 0 in boiling water when annealed above 130oC; consequently, the use of annealed fiber above 130oC can remove thermal instability when dyeing PTT fiber. In the case of yarns, the thermal stability and physical properties of yarns showed the best effect when the ply number is less than 5, twist number is less than 400tpm, and the annealing time is 20minutes.

모직물을 포염에서 melange염색 효과를 나타내기 위한 기술개발과 응용에 관한 연구

이명환,정영진,최해욱,이언필 한국염색가공학회 1998 韓國染色加工學會誌 Vol.10 No.3

The dyeing properties of modified wool were examined with a series of acid, reactive and cationic dyes. Cationic agent and sulphamic acid were applied to wool fabric for dye assist and resist effect. Wool pretreated with cationic agent showed better uptake of acid and reactive dyes than did untreated wool. On the other hand, the dyeing behavior of wool pretreated with sulphamic acid was found as follows : Acid dyes were poorly resisted with a hydrophobic mechanism but acid dyes were strongly resisted with a hydrophilic mechanism. Reactive dyes were also found to be effectively resisted. Sulphamic acid introduces sulphonate group into wool's structure, it has increased better uptake of cationic dyes than untreated wool. The degree of differential uptake depends on the level of pretreatment and produces a variety of tone-on-tone and multicolor effect in piece dyeing.

키토산/PVA 블렌드 필름의 구조 및 특성

이재호,노창환,최해욱,정영진,황대연,이언필,Lee, Jae-Ho,Noh, Chang-Hwan,Choi, Hae-Wook,Jung, Young-Jin,Hwang, Dae-Youn,Lee, Eon-Pil 한국섬유공학회 2010 한국섬유공학회지 Vol.47 No.2

Chitosan/poly(vinyl alcohol)(PVA) blend films with non-toxicity, biodegradability, and biocompatibility were prepared by solvent blending method. The weight composition ratios of chitosan/PVA blend films were 100/0 (chitosan homopolymer), 75/25, 50/50, 25/75, and 0/100 (PVA homopolymer). Physicochemical properties of the prepared blend films according to various blend ratios were investigated by using universal testing machine, thermogravimeter (TGA), differential scanning calorimeter (DSC), wide angle X-ray diffractometer (WAXD), Fourier transform infrared (FTIR) spectrometer, and scanning electron microscope (SEM). The tensile stress and tensile strain of chitosan/PVA blend films increased as the amount of PVA increased. The thermal stability increased with increasing chitosan content in the chitosan/PVA blend films. The DSC curve of the PVA film shows an endotherm peak around $230^{\circ}C$, and the peak became smaller and broader with increasing chitosan content. The diffraction intensities of chitosan observed at 2 theta of $10^{\circ}$ decreased with increasing the content of PVA in the blend films, but the crystal intensities of the blend films increased as the amount of PVA increased. In the infrared spectra, the absorption band for -OH and -NH stretching vibrations in chitosan broadened and shifted obviously to lower wavenumber with the increase of PVA. Water-retention values of the chitosan/PVA blend films increased as the amount of PVA is increased owing to the hydrophilic nature of PVA. From the structural analyses, it is believed that chitosan and PVA are miscible due to the strong intermolecular hydrogen bonding.

분산염색에서 Cotelomer 타입 계면 활성제의 응용

이재호,최해욱,정영진,황대연,최영호,이언필,Lee, Jae-Ho,Choi, Hae-Wook,Jung, Young-Jin,Hwang, Dae-Youn,Choi, Young-Ho,Lee, Eon-Pil 한국섬유공학회 2010 한국섬유공학회지 Vol.47 No.1

Multi-chain surfactants usually form micelles more easily than single-chain surfactants due to their low surface tension and low solubility in water. In this study we prepared cotelomers of multi-alkylated nonionic surfactants with a molecular structure $xR_nMA$-yVA (x; hydrophobic group, y; hydrophilic group, MA; methacrylic ester, VA; vinyl alcohol, R; alkyl group) and investigated their properties as surfactants for the disperse dyeing of cellulose acetate, nylon 6, and PET fibers. Some cotelomers were synthesized via a radical polymerization of vinyl monomers MA and VA using azobisisobutyronitrile (AIBN) as an initiator. The ratio of x/y and degree of polymerization of $xR_nMA$-yVA with an alkyl chain length (n) of 4 or 6 were controlled by adjusting the ratio of thiol to monomers. We found that a cotelomer with a degree of polymerization 9.9 showed better dispersing performances than cotelomer with a degree of polymerization 4.4 or 12.5, and that the degree of dispersion increased to a certain level and then decreased as concentration of cotelomer increased. The highest value of dye uptake for the three fibers was obtained when using a cotelomer with a monomer unit ratio (x/y) of 0.2 and 0.5 g/l of concentration was 0.5 g/l.

키토산/세리신 블렌드 필름의 구조 및 특성

강세미,노창환,황대연,정영진,최해욱,이언필,이재호,Kang, Se-Mi,Noh, Chang-Hwan,Hwang, Dae-Youn,Jung, Young-Jin,Choi, Hae-Wook,Lee, Eon-Pil,Lee, Jae-Ho 한국섬유공학회 2012 한국섬유공학회지 Vol.49 No.1

The uncrosslinked and crosslinked by ethylene glycol diglycidyl(EGDE) chitosan/sericin blend films were prepared by solvent blending method. Physicochemical properties of the prepared blend films according to various blend ratios were investigated. This was carried out by using universal testing machine, thermogravimeter(TGA), differential scanning calorimeter(DSC), wide angle X-ray diffractometer(WAXD), Fourier transform infrared spectrum(FTIR) and scanning electron microscopy(SEM). With an increase in the sericin mixing ratio, tensile stress increased whereas the tensile strain decreased for uncrosslinking blend films. For a cross linked chitosan/sericin blend film by EGDE, both the tensile stress and strain decreased. Chitosan/sericin blend films exhibit an excellent thermal stability when sericin mixing ratio is 25%. In the infrared spectra, chitosan/sericin blend films showed an absorption band of amide I peak at 1630 $cm^{-1}$ and it is concerned with C=O stretching vibration by strong hydrogen-bond between inter-molecular. These also showed an absorption band of amide II peak at 1521 $cm^{-1}$ concerned with N-H bending vibration. The absorption band of amide I peak decreased with an increase in the chitosan mixing ratio. We identified that there was good miscibility between chitosan and sericin. The water-retention values(WRV) of chitosan/sericin blend films increase as the amount of sericin is raised and this owes to the hydrophilic nature of sericin. Weight loss of the citosan/sericin blend films by cleaning with an aqueous sodium hydroxide increased with an increase in the sericin mixing ratio. This loss is the loss of acetic acid and sericin in the chitosan/sericin blend films and this is because of the molecular weight of the sericin is 1/5 of the chitosan and sericin is dissolved into NaOH solution. Weight loss increased when sericin content was more than 50% for the cross linked chitosan/sericin blend films. From the structure analysis, we identified that there was good miscibility and strong intermolecular interaction between the chitosan molecules that resulted from intermolecular hydrogen bonds.