• 한국의류학회지
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• 제30권12호
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• pp.1683-1689
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• 2006

리오셀직물은 면직물보다 강하고 습윤시 치수안정성이 높으며 우수한 드레이프성, 탁월한 광택, 소프트한 촉감 등 우수한 성능을 가지고 있어 최근 각광받고 있는 신소재 중 하나이다. 그러나 리오셀직물에 관한 연구는 섬유의 성질, 가공염색방법에 관한 것이 대부분으로, 적합한 봉제방법, 심지선정 등에 관한 연구는 찾아보기 어렵다. 이에 본 연구에서는 겉감으로 시판 리오셀직물 중 숙녀복 수트용으로 사용되고 있는 100% 텐셀직물과 65/35% 텐셀/면 혼방직물 각각에 대해 20수와 10수 모두 4종류를 선정하고 접착 심지로는 중량과 조직을 달리하는 시판 직물심지 5종류와 부직포심지 1종류를 선정하여, 리오셀 심지접착포의 접착심지와 리오셀겉감의 특성에 따른 외관적 성능과 역학적 특성을 측정한 후, 통계적 분석(t-검정, F-검정)에 의해 검정하여 다음과 같은 결론을 얻었다. 1. 리오셀 심지접착포의 드레이프성과 구김회복성은 접착심지의 구조에 영향을 받고, 강연성은 접착심지의 구조와 리오셀겉감을 구성하는 실의 변수에 영향을 받는다. 2. 리오셀 신지접착포의 인장특성중 WT는 리오셀겉감을 구성하는 실의 번수와 혼용률에 영향을 받고, RT는 리오셀 겉감을 구성하는 실의 번수에 영향을 받는다.

• 대한가정학회지
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• 제40권7호
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• pp.15-24
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• 2002

In this work, the effect of fusible interlining on the appearance related properties and mechanical characteristics of Lyocell fabric after fusing was investigated. Two different types(20's and 10's) of Lyocell face fabric with six different interlining(by thickness and structure) for earth Lyocell fabric were examined. In order to establish the optimum fusing condition for the different face fabric and interlining, peel strength of each fused fabric was measured, which was dependent on the fusing temperature, pressure, and time. The characteristics related appearance and mechanical characteristics of each fused fabric were determined. The results are as follows: The peel strength was excellent, when the fabric was fused with the force of 3kgf/$textrm{cm}^2$ at $120^{\circ}C$ for 15seconds. Flex stiffness, G, 2HG, 2HG5(shear), B, 2HB(bending) of 100% Lyocell fabric 10's were higher than those of 100% Lyocell 20's. Flex stiffness, crease recovery, G, 2HG, B, 2HB of thicker woven interlining were higher than those of thinner woven interlining. Crease recovery of twill interlining were higher than those of plain interlining. In case of shear and bending properties, however, plain interlining was higher than twill interlining. Flex stiffness, crease recovery, G, 2HG, 2HG5, B, 2HB of nonwoven interlining were higher than those of woven interlining. In case of drapability, however, woven interlining was higher than nonwoven interlining.

• 한국의류산업학회지
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• 제8권3호
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• pp.363-369
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• 2006

In this the study, Lyocell fabrics for blanket were developed to get high value added goods for elder and Infant. Therefore, the purpose of the study was determine the effect of twist per inch on the physical properties of developed fabrics, including compression property and abrasion resistance on the process for making Lyocell combined yarns. For comparison, commonly used cotton blanket was used. The results were as the follows: 1) Dimensional changes of Lyocell fabrics was in -3% which value was pretty stable, and antistatic property was very good with 10V of electric propensity voltage which means there was no static electricity at all. Pilling property of Lyocell fabrics showed 3 grade which was good and air permeability and moisture vapor transmission rate of Lyocell fabrics were higher than those of cotton fabric and keeping warmth rate of Lyocell fabrics was about 50% which means it very warms. 2) Twist per inch of Lyocell combined yarns increased with tensile strength and elongation of Lyocell fabrics. 3) Twist per inch of Lyocell combined yarns increased with decreasing thickness reduction rate and therefore, compression property of those was pretty good. Specially, compression property of Lyocell fabrics made with yarns of 3.9TPI was better than those of cotton fabric. 4) Twist per inch of Lyocell combined yarns increased with abrasion resistance of Lyocell fabrics.

• 한국의류학회지
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• 제30권8호
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• pp.1323-1332
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• 2006

Lyocell is a regenerated cellulose fiber manufactured by an environmentally-friendly process. Since the fiber has more crystalline region compared to rayon, lyocell shows higher wet-strength than rayon. Although fibril generation of lyocell is lower than that of rayon because of the reason, the fibril generated during the wet process deteriorates the smooth look and soft touch of the fabric. The efficient way to remove the fibril yet retain the strength property was investigated in this work. In order to scour and remove the fibril from the fabric, cellulase enzymes were introduced and the traditional scouring was carried to be compared. Weight loss, dye-ability, and strength of treated fabric were measured after the treatments. Scanning electron microscopy was used to observe the surface of the fiber. Among the cellulases used in this work, Denimax 992L showed the best results for removal of fibril with low weight loss and tensile strength loss. The optimal conditions for the enzymatic treatment could be chosen depending on a characteristic for final purpose of the lyocell product.

• 패션비즈니스
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• 제12권6호
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• pp.46-60
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• 2008

Lyocell is a regenerated cellulosic fiber manufactured by an environmentally friendly process. The major advantages of lyocell are the excellent drape forming property, the genuine bulkiness, smooth surface, and high dry/wet tenacities. However, one drawback of lyocell is its fibrillation property, which would degrade its aesthetic quality and lower the consumer satisfaction. In our previous studies, lyocell was treated with epichlorohydrin, a non-formalin based crosslinker, to reduce its fibrillation tendency. To investigate the changes of physical properties upon ECH-treatment, the hand characteristics of ECH-treated fabric were observed using KES-FB system and the 3D-virtual sewing image of the fabrics were obtained using 3D CAD simulation system in this study. Since epichlorohydrin(ECH) treatment was conducted in the alkaline medium, the weight reduction was observed in all treated lyocell. The treated lyocell became light, smooth and flexible in spite of ECH crosslinker application. LT and RT in tensile property upon the ECH treatment did not change significantly, however, EMT and WT in the tensile property increased. The significant decrease in bending rigidity was resulted in all ECH-treated lyocell, which is the result of the weight loss upon the alkali condition of ECH treatment. The bending rigidity increased again in the ECH 30% treated lyocell, however, the B value is still lower than the original. Therefore, the ECH-treated lyocell would be more stretchable and softer than the original. Shear rigidity was also decreased in all ECH-treated lyocell, which would result in more drape and body fitting when it is made as a garment. The ECH-treated fabric showed the softer smoother surface according to SMD value from KES evaluation. The virtual 3D sewing image of the ECH-treated lyocell did not show a significant change from that of the original except ECH 30% treated lyocell. ECH 30% treated lyocell showed a stiffer and more puckered image than the original.

• 한국염색가공학회지
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• 제18권4호
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• pp.20-27
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• 2006

Lyocell is a not only environmentally-friendly but also very advantageous fiber. When Lyocell is soaked in water, its wet tenacity does not decrease and elongation and moisture regain of it are better than cotton. However, one drawback of lyocell is its fibrillation. The fibrills of lyocell were generated during wet process such as scouring and dyeing deteriorates the dyeing color depth and the appearance of fabric. The purpose of this study was to decrease the fibrillation tendency of lyocell fabric using crosslinking agent, epichlorohydrine(ECH). The effects of NaOH scouring and ECH crosslinking were observed. The different types of ECH addition methods to lyocell and the various concentrations of ECH in crosslinking reaction onto dyeing characteristic and fibriallation were investigated. Weight loss and whiteness index of crosslinked lyocell by ECH were examined. K/S values of ECH treated lyocell fabrics dyed with reactive dye were measured and SEM images of untreated and treated lyocells were observed extensively to define the fibrillation tendency. The results were as follows ; 1) ECH treatment showed the effect of weight loss and scouring because ECH crosslinking reaction was conducted in alkaline condition. 2) The increase in ECH concentration from 5 to 30% does not affected K/S value changes. 3) ECH crosslinking can effectively prevent the fibrillation tendency of lyocell.

• 한국의류학회지
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• 제25권7호
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• pp.1193-1202
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• 2001

The goal of this research is to investigate the effect of fusible interlinings on the mechanical characteristics and appearance related values for the Lyocell fabrics. In this study, to establish optimum fusing conditions, peel strength of the fused fabrics depending on the fusing temperature, pressure and time was measured. Appearance related properties and mechanical characteristics of the fused fabrics ere determined. The reulst are as follows: In the fusing condition of $120^{\circ}C,\;3kgf/textrm{cm}^2$, 15sec, peel strength was excellent. Peel strength was excellent in the case of tencel/cotton fabric, with increasing cover factor of woven interlining, with twill and nonwoven interlining. Flex stiffness was increased in the case of tencel/cotton fabric, with increasing weight of woven interlining, with twill and nonwoven interlining. Drapability was excellent in the case of 100% tencel fabric, with decreasing weight of woven interlining, with plain and woven interlining. Crease recovery was excellent in the case of 100% tencel fabric, with increasing weight of woven interlining, with twill and woven interlining. Shear and bend properties were increased in the case of tencel/cotton fabric, with increasing weight of woven interlining, with plain and nonwoven interlining.

• 접착 및 계면
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• 제10권2호
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• pp.106-112
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• 2009

본 연구에서 처음으로 생분해성 라이오셀 직물과 poly(butylene succinate) (PBS)로 이루어진 바이오복합재료가 성공적으로 제조되었다. 0, 30, 40, 50 그리고 60 wt%의 서로 다른 함량의 라이오셀직물을 포함하는 라이오셀/poly(butylene succinate) 바이오복합재료는 sheet interleaving 방식으로 압축성형에 의해 제조되었다. 바이오복합재료의 층간전단강도, 인장 및 굴곡 특성, 열변형 온도, 열팽창 거동 및 열안정성에 미치는 라이오셀직물 함량의 영향을 조사하였다. 특성들은 직물함량에 크게 의존하였으며, 그 결과들은 서로 일치하였다. 라이오셀직물을 수지에 도입하는 것이 poly(butylene succinate)의 여러 가지 특성 향상에 두드러진 역할을 하는 것으로 확인되었다. 라이오셀직물이 중량비로 50%일 때, 바이오복합재료의 가장 우수한 층간전단강도, 인장, 굴곡 및 열적 특성이 얻어졌다.

• Fibers and Polymers
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• 제6권1호
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• pp.28-34
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• 2005

The purpose of the research was to examine the effect of three different levels of enzyme treatment on the physical characteristics and the end-use suitability of the lyocell fabrics made with four different types of commercial wood pulp. The appropriate enzyme concentration for obtaining an optimum as well as consistent physical characteristics and fabric hand trait was 3 g/l for the concentration levels tested in the present investigation. Weight loss was more affected by higher enzyme con­centration than other physical properties. H2 was least affected by enzyme treatment for all three physical properties and fab­ric hand. 5 g/l concentration exhibited little difference from 3 g/l in the physical characteristics, whereas the KES-FB values indicated a significant loss of fabric hand in most PHV s with the 5 g/l concentration level. Among different garment parame­ters, all four fabric types were relatively inappropriate for the men's slacks (MS) fabric due to the lower hand value of koshi required by the MS parameter. However, despite the relatively low koshi values, high fukurami values required for men's dress shirt (MWDS) resulted in the highest THV among the four garment parmeters. The four fabric types, which represent the usage of four different wood pulps, in general seem to exhibit a higher applicability to women's winter thin dress (WWTD) than women's winter suit (WWS) garment parameter.

• 한국추진공학회지
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• 제23권6호
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• pp.21-27
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• 2019

우주 항공용 노즐에 사용되는 셀룰로오스계 탄소 직물은 낮은 열전도도, 높은 내삭마 특성을 가지고 있다. 그러나 내염화 및 흑연화 공정에서 70~90% 중량이 감소하여 최종 탄소 직물 제조 시 수율이 낮은 단점이 있다. 본 연구에서는 리오셀 직물에 인계난연제로 인산(Phosphoric acid), 가교제로 시트르산(Citric acid)을 사용하여 전처리한 후 FT-IR, XRD, TGA 분석을 통하여 화학적 구조 및 열적 특성 변화를 확인하였다. 또한 리오셀 직물의 내염화 및 흑연화 후 중량을 측정하여 시트르산이리오셀 직물 수율 변화에 미치는 영향에 대하여 확인하였으며, 16 wt% 첨가 시 흑연화 수율이 8.1% 까지 증가하는 것을 확인하였다.