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플루오르 화합물을 플라즈마 처리한 PET 직물의 방수성 및 투습성
모상영,김태년 忠南大學校 産業技術硏究所 1996 산업기술연구논문집 Vol.11 No.2
Glow discharge plasmas have been arisen much interests in the field of surface modification of polymers. There are much activated species in glow discharge plasma such as electrons(average energy:10eV), radicals and ultra-violet rays(∼40eV)etc. Those of activated energies can be used properly to modify the polymer surfaces. Recently, the demands on fabric which poses a water repellent, proofing and a moisture transpirate characters have been more and more increased. General preparing techniques of those materials are known as (1) surface modification of high bulky and high density fabrics, (2) surface coating with urethane or fluoro resins, (3) lamination with porous films. Among those methods the (1) is superior at moisture transpiration than (2) or (3), but is inferior at water proofing than (2) or (3). If, however, we could improve the water repellency and proofing characters, the process (1) would be the most preferable to other methods. In this work, we have treated PET fabric with each of CF₄, C₂F6, SF 6 and CF₃CF=CF₂plasmas to develop high functional fabric which preserves a moisture transpiration and water proofing natures. Modified properties were evaluated by breakthrough water pressure and water vapor permeation rate. The change of surface morphology was observed by SEM. Results obtained are (1) The moisture transpiration of CF₄-treated fabric was superior as much as untreated fabric, and those of C₂F6-treated, SF6-treated fabrics were inferior in 1∼3%, and that of C₃F6-treated fabric was the most inferior in 15%. (2) At very low pressure treatment condition, it tend to be more hydrophilic except C₃F6-treated fabric. (3) The best treatment condition were 0.09 torr, 90∼120 seconds in CF₄, 0.05 torr, 60∼90 seconds in C₂F6, 0.1 torr, 90 seconds in SF6 and 01 torr, 60 seconds in C₃F6 respectively.
牟相榮 충남대학교 대학원 1976 論文集 Vol.6 No.-
This study has been investigated on the sizing effect of synthetic size and esterified starch on the fibres, according to the elongation, tensile strength, stiffness and crease recovery of sized fibres. The mechanical properties of the fibres are as follows, 1) The rate of elongation of sized wool ana cotton are decreased, but the others are gradually increased, and sized polyester is markedly increased. 2) The curve of the tensile strength of each fibre shows almost flat. 3) The stiffness of all sized fibres is markdly increased according to size, but regardless of a kind of fibre. 4) The crease recovery of wool and polyester sized by PVA and CMC is predominant in the aspect of the effect on. 5) A little difference between esterified starch and synthetic size on fibres shows in the aspect of effects on, for that reason, esterified starch can be appropriately used as a size on synthetic fibre as well as synthetic size.
Plasma Graft중합에 의한 Poly(ethylene Terephthalate) 섬유의 표면개질에 관한 연구
모상영 한국섬유공학회 1983 한국섬유공학회지 Vol.20 No.3
Surface modification of poly (ethylene terephthalate) (PET) fiber was investigated using low discharge polymerization technique. Argon gas plasma was used as an initiator on PET film and followed post copolymerization of acrylic acid vapor. The effect of modification was evaluated by contact angle of water, electro-resistance, IR-a.t.r. method, ESCA techniques and scannig electron microscopy. It was observed that the modification in the PET fiber was closely dependent on the gas pressure, treating time, current density, distance of substrate from gas inlet and reactor design. Generally, it seemed more effective to treat under the following conditions: 1) Plasma gas pressure is around 0.2 Torr and initiating time is 30∼45 seconds. 2) The more the high pressure, the more the long treating time of monomer gas is advantageous. 3) The higher current density in the low temperature plasma condition is required. 4) It is advantageous to avoid near of electrodes and center area between both electrodes for a setting position of substrate. In this work, the thickness of grafted thin film evaluated by ESCA techniques was 15${\AA}$.
플라즈마를 이용한 폴리에틸렌테레프탈레이트의 친수 그라프팅
모상영,천태일 한국섬유공학회 1987 한국섬유공학회지 Vol.24 No.3
Graft copolymerization of acrylic acid on the surface of poly(ethylene terephthalate)(PTE)ber was investigated using low temperature plasma treatment. Argon plasma was used as an initiator on PET fiber and followed post copolymerization by inducing acrylic acid vapor under required conditions. The topographical change of grafted PET film surface was evaluated by SEM and roughness tester. The grafted feature and the grafting yield of poly(acrylic acid) were evaluated by SEM and FT-NMR respectively. The results obtained are as follows; 1. The surface of PET fiber was etched and activated by plasma treatment. 2. On the roughness of plasma grafted PET film, it can be seen that the longer the plasma treatment time, the lower the height of wave and the spreader the wave width. 3. The grafting of poly(acrylic acid) on PET fiber can be detected by H1-NMR.
綿織物의 Silicone 防水加工에 있어서 界面活性劑의 影響
牟相榮,李廷玟 忠南大學校 1974 論文集 Vol.13 No.1
The broad objective of this study is to investigate the effect of surfactants other than silicone water-repellent on the spray rating of water-repellent cotton fabrics. Specific objectives of the work are to measure qualitatively the effect of selected surfactants on water repellency, to study some of the mechanisms by which they act, and to develop a test to determine the suitability of cotton fabric for silicone water-repellent treatment. Four surfactants were chosen for study. They were dye fixative, wetting agent, penetrating agent and silicone defoamer most widely-used. Of the surfactants studied, wetting and penetrating agent had the greatest effect on the water repellency. Dye fixative and silicone defoamer had a relatively little effect. In general, the effect of the surfactants was more pronounced when they were present in the repellent treating bath than when they were on the fabric prior to treatment.