• Title/Summary/Keyword: PET microfiber

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A Study on Decomposition of PET Microfiber Fabrics by Sodium Propyleneglycolate/propyleneglycol (Sodium propyleneglycolate/propyleneglycol 용액에 의한 Pollrester극세사직물의 분해에 관한 연구)

  • 배정숙
    • Journal of the Korean Society of Clothing and Textiles
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    • v.22 no.4
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    • pp.431-441
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    • 1998
  • Polyester microfiber fabrics were decomposed at 100, 110, 120 and 140 t of temperature and 0.5, 1.0 and 1.5% of sodium propyleneglycolate/propyleneglycol solution(SPG-PG). Characteristic decomposition feature and physical and chemical properties of the decom- posed PET microfiber fabrics were discussed. The activation energy was 18.77 kcal/mol and the dyeability of the decomposed PET microfiber fabrics was found to be improved as it was supported by the examined K/S values. Up to the 20% of the weight loss of the PET microfiber fabrics, K/S values incresed with increasing the weight loss. The melting temperature of PET microfiber fabrics decomposed by SPG-PG showed no fundamental change. Tensile strength of the decomposed PET microfiber fabrics decreased linearly in accordance with the increased the weight loss of the PET microfiber fabrics. The moisture regain and the tactilities increased in accordance with the increased the weight loss of the PET microfiber fabrics.

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Dyeing properties of direct spun type microfiber (직방형 이형단면 초극세사의 염색성 및 견뢰도 평가)

  • Eom, Min-Yeong;Kim, Dong-Bin;Go, Jun-Seok
    • Proceedings of the Korean Society of Dyers and Finishers Conference
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    • 2008.04a
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    • pp.83-85
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    • 2008
  • Dyeing and fastness properties of direct spun type PET microfiber have been compared with those of regular PET fiber and PET-Nylon conjugated microfiber. The dye uptake of finer microfibers commenced at lower temperatures and showed faster rate of dye uptake. The build-up and wash fastness properties of disperse dyes on direct spun type PET microfiber were relatively better than split type PET-Nylon microfiber.

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A Study on Extraction Condition of Co-PET from PET/Co-PET Sea-Island Type Microfiber Fabric (PET/Co-PET 해도사 직물의 Co-PET 추출 조건에 관한 연구)

  • Park, Myeong Su;Yun, Jong Ho;Jo, Dae Hyeon
    • Textile Coloration and Finishing
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    • v.13 no.2
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    • pp.34-34
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    • 2001
  • In order to make a microfiber fabric with PET/Co-PET Sea-Island Type microfiber, the optimum condition of extraction and elimination of Co-PET from the microfiber was examined. At the same time, the physical property change of the fabric with respect to the change of the relative amount of the Co-PET in the microfiber was also examined to provide a directly applicable data set to the industry. The sample fabric used was warp 75/36(DTY) and weft 0.05d(PET/Co-PET, Sea Island Type Microfiber) twill fabric of 36 separated yarns+40/24(high shrinking yarn) with 130/48 ITY. The data set was made at various NaOH concentrations and steam temperatures with time as a main variable. The physical properties examined were the tensile properties. The results obtained were the tensile properties. The results obtained were 1. For a proper extraction of Co-PET (13.5%)from the microfiber with wet curing, it takes more than 5 min. in 8 and 12% of NaOH solutions but it takes only 3 min. in 18% of NaOH solution at 120℃. 2. For a proper extraction of Co-PET (13.5%) from the microfiber with wet curing, it takes 3∼5 min. in 12 and 14% of NaOH solution and it takes less than 3 min. in 18% of NaOH solution at 130℃. 3. The increasing ratio of WT increased with increasing NaOH concentrations and the equilibrium point reached was 3 min. at 120℃. 4. The WT increasing ratio was greater in 14 and 18% NaOH solutions than in 8 and 12% of NaOH solutions at 130℃. 5. The RT ratio changes at 120℃ in 8 and 12% of NaOH solutions were indifferent from that at 130℃ in 12% of NaOH solution. However, the RT was apparently decreased with increasing NaOH concentration.

A Study on Extraction Condition of Co-PET from PET/Co-PET Sea-Island Type Microfiber Fabric (PET/Co-PET해도사 직물의 Co-PET추출 조건에 관한 연구)

  • 박명수;윤종호;조대현
    • Textile Coloration and Finishing
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    • v.13 no.2
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    • pp.120-127
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    • 2001
  • In order to make a microfiber fabric with PET/Co-PET Sea-Island Type microfiber, the optimum condition of extraction and elimination of Co-PET from the mocrofiber was examined. At the same time, the physical property change of the fabric with respect to the change of the relative amount of the Co-PET in the microfiber was also examined to provide a directly applicable data set to the industry. The sample fabric used was warp 75/36(DTY) and weft 0.05d(PET/Co-PET, Sea Island Type Microfiber) twill fabric of 36 separated yarns+40/24(high shrinking yarn) with 130/48 ITY. The data set was made at various NaOH concentrations and steam temperatures with time as a main variable. The physical properties examined were the tensile properties. The results obtained were the tensile. The results obtained were 1. For a proper extraction of Co-PET (13.5%)from the microfiber with wet curing, it takes more than 5 min. in 8 and 12% of NaOH solutions but it takes only 3 min. in 18% of NaOH solution at 12$0^{\circ}C$. 2. For a proper extraction of Co-PET (13.5%) from the microfiber with wet curing, ti takes 3~5min. in 12 and 14% of NaOH solution and it takes less than 3 min. in 18% of NaOH solution at $130^\circ{C}$. 3. The increasing ratio of WT increased with increasing NaOH concentrations and the equilibrium point reached was 3 min. at $120^\circ{C}$. 4. The WT increasing ratio was greater in 14 and 18% NaOH solutions than in 8 and 12% of NaOH solutions at $130^\circ{C}$5. The RT ratio changes at $120^\circ{C}$ in 8 and 12% of NaOH solutions were indifferent from that at $130^\circ{C}$ in 12% of NaOH solution. However, the RT was apparently decreased with increasing NaOH concentration.

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The Characteristics of PET Micro Fiber Fabrics Decomposed dy Sodium Ethylene glycol Solution (Sodium ethylene glycolate 용액에 의한 PET 극세사 직물의 분해 특성)

  • Bae, Jung-Sook;Cho, Yong-Suk
    • Journal of the Korean Home Economics Association
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    • v.36 no.8
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    • pp.95-104
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    • 1998
  • PET microfiber fabric dissociation reactions by ethylene glycol (EG) catalayzed by the corresponding EG anions were examined to provide an empirical basis for the improvement of a PET microfiber fabrics. The alkoxide ions, monosodium ethylene glycolate in ethylene glycol solution(MSEG-EG) are prepared by the reaction between NaH and the EG respectively. The dissociation reactions were carried out until the sample PET microfiber fabrics dissociate up to 80%. Temperature used ranged 100~$160^{\circ}C$. The kinetic behaviors of the dissociated PET microfiber fabrics were examined. The results are as follows : 1. In all cases, it was found that the PET-alkoxide dissociation rate constants increased exponentially with increasing temperature. The activation energies (Ea) of the reactions were 23.31kcal/mol in PET-EG system respectively. The calculated enthalpies of the activated [PET-EG] complexes from the corresponding Ea values were 22.53 ~ 22.61 kcal/mol, and the entropies were -19.03 ~ -19.24 kcal/mol/k respectively. 2. The kinetic behavior of the PET-alkoxide dissociation reactions examined was explained by the transition state theory. PET-alkoxide transition state is believed to be formed during the ester interchange mechanism between PET and MSEG-EG in the course of the PET dissociation reactions.

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Dyeing properties of direct spun type microfiber velvet woven fabric (직방형 이형단면 초극세사를 이용한 벨벳 직물의 염색성 및 견뢰도 평가)

  • Kim, Dong-Bin;Eom, Min-Yeong;Go, Jun-Seok
    • Proceedings of the Korean Society of Dyers and Finishers Conference
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    • 2008.04a
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    • pp.86-88
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    • 2008
  • Dyeing and fastness properties of direct spun type PET microfiber velvet woven fabric have been compared with those of regular PET velvet woven fabric. They showed different exhaustion and rate of dye uptake. The build-up properties of disperse dyes on direct spun type PET microfiber velvet woven fabric were relatively poor than regular PET velvet woven fabric. The wash fastness properties of disperse dyes on regular PET velvet woven fabric were similar to direct spun type PET microfiber velvet woven fabric.

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A Study on the Alkali Hydrolysis of Sea-island PET Ultra-microfiber (해도형(海島型) PET 초극세섬유의 알칼리 가수분해에 관한 연구)

  • Seo, Mal Yong;Lee, Jun Hee;Ok, Chi Min;Cho, Seong Hun;Lee, Jong Woo;Cho, Ho Hyun
    • Textile Coloration and Finishing
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    • v.25 no.4
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    • pp.303-313
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    • 2013
  • Alkali hydrolysis of sea-island PET 0.02denier microfiber were compared to those on the fabrics of the 0.06denier microfiber. In the dissolution of the sea component out of sea island type ultra-microfiber, it is important to determine the optimum division and divided material. Weight reduction of sea island ultra-micro sea island fiber was faster than regular PET about 10 times. Also 0.2denier sea-island ultra-micro sea island fiber has better color fastness (washing, friction, and daylight) than 0.06denier level sea-island ultra-microfiber. In this study, 0.2denier ultra-micro sea island fiber shows the possibility of high value product.

Dyeing and Fastness Properties of Direct Spun Type PET Microfiber Fabrics (직접방사형 PET 극세사 제품의 염색성 및 견뢰도 특성)

  • Koh Joonseok;Park Jong Ho;Lee Kwon Sun;Kim Sung Dong
    • Textile Coloration and Finishing
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    • v.17 no.5 s.84
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    • pp.13-19
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    • 2005
  • Dyeing and fastness properties of direct spun type PET microfiber fabrics have been investigated. The dye uptake of finer microfibers commenced at lower temperatures and showed faster rate of dye uptake. The build-up and wet fastness properties of disperse dyes on finer microfbers were relatively poor since the more dye was needed to achieve a given depth of shade due to the large surface area.

End Use Tactile Property of the Split-type Nylon/PET Microfiber Fabrics (마찰과 세탁에 의한 극세섬유 직물의 표면과 촉감변화에 관한 연구)

  • 오경화;윤재희
    • Journal of the Korean Society of Clothing and Textiles
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    • v.28 no.3_4
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    • pp.539-545
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    • 2004
  • In this study, the effect of washing, bleaching, and abrasion on tactile and the water absorption properties of the split-type Nylon/Polyester (N/P) microfiber pile-knit was investigated under various enduse conditions. We examined the water absorption and surface properties of PET microfiber which will be very useful in the future. We also studied the variations of their performance during usage caused by friction and repeated washing, regard to all kinds of physical, chemical changes which will appear while using those textiles. Progress in further splitting of PET microfiber fabric is observed with increases in the number of washing and bleaching cycles, and treatment temperature. Initial water absorption (%) was increased with progress in splitting, which provided efficient capillary channel. Surface properties were varied with additional splitting by washing and abrasion. Formation of pilling and splitting by abrasion increase surface roughness, diminishing tactile property, and reduced water absorption property. The current results from this study is expected to provide the appropriate washing management guide to consumers, and to inform end-use performance of product to a producer for improving product quality.

A Study on the Weight Loss of Island-in-a Sea Fabrics by Ultrasonic (초음파를 이용한 해도직물의 감량 가공에 관한 연구)

  • 신현세;윤철수;임병완
    • Textile Coloration and Finishing
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    • v.16 no.1
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    • pp.40-47
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    • 2004
  • Alkaline treatment gives Sea-Island type yam to produce microfiber and silk-like touch. But this treatment have some problems in dyeing and finishing process. To solve some problem occurred in dyeing and finishing of polyester fabric, the ultrasonic treatment technique was used recently. This study was carried out to confirm the effect of the ultrasonic treatment on alkaline weight loss finishing of polyester fiber under general alkaline treatment conditions; NaOH concentration 2, 3, 4, and 5%, treatment time 5, 10, 15, and 20 minutes, treatment temperature 70, 80, 90, and 99'E, respectively. On the other hand, the three way lay out method was used to test of significant obtained data from alkaline treatment. It was found that weight loss increased with increasing the NaOH concentration, temperature, and time. Also, in case of PET/Co-PET fabrics by ultrasonic, weight loss and dissolution of microfiber were superior to PET/Co-PET fabrics without ultrasonic. Tensile strength and modulus decreased with increasing NaOH concentrations and hydrolysis time. Therefore, the effect of alkali hydrolysis by ultrasonic application was better than that of the conventional method.