• 한국잠사곤충학회지
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• 제36권1호
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• pp.53-57
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• 1994

견방사와 PET로 구성된 혼섬유 재료에 대해 여러가지 조건에서 알칼리 감량을 실시하여 감량율을 조사하고, 감량촉진제가 정련, 감량에 미치는 영향에 대해 검토한 결과를 요약하면 다음과 같다. 1) 감량촉진제와 농도 증가에 따라 견방사의 감량은 감소하여 강알칼리욕에서도 적당한 정도의 감량율을 얻을 수 있었다. 2) PET "A", "B"와 견방사로 된 혼섬유의 감량에서 견방사는 피브로인의 손상이 없는 정도의 적당한 감량이 얻어졌고, PET의 감량도 동시에 이루어 질 수 있었다. 3) PET "D", "E"와 견방사로 된 혼섬유의 감량에서, 견방사는 적당한 감량이 이루어 질 수 있었으나 PET의 감량율은 미미하였다. 4) 견방사와 PET로 된 교직물의 감량에 있어서, 견방사 분분은 전형적인 연감곡선 형태를 나타내 감량평형을 보였으나 PET는 처리시간의 경과에 따라 감량율이 계속해서 증가하였다. 보였으나 PET는 처리시간의 경과에 따라 감량율이 계속해서 증가하였다.

• 한국잠사곤충학회지
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• 제35권1호
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• pp.52-59
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• 1993

비누 정련 견사와 효소 정련 견사의 결정 구조는 정련 구조 중 처리온도의 차이에 의하여 효소 정련 견사의 결정성이 비누 견사의 결정성 보다 높다고 전보(김·남, 1992)에서 보고하였는데 이와같은 정련 견사의 결정성의 차이가 정련 견사를 열처리를 하였을 때 어떻게 변화하는지를 밝히기 위하여 두가지 방법으로 정련한 견사에 대하여 습열 처리와 동결 처리한 후 특성을 분석한 결과는 다음과 같다. 1. 정련 견사를 습열 처리한 경우 강력과 신도는 모두 저하되었으며 비누 정련 견사는 습열 처리온도의 상승과 함께 열 분해 온도도 고온측으로 이동하고 IR crystallinity도 증가하였으나 효소 정련 견사는 습열 처리에 의하여 열 분해 온도와 IR crystallinity의 큰 변화가 없었다. 이와 같은 결정 구조의 차이는 비누 정련 견사는 습열 처리로 재배향 결정화가 일어나 결정화도는 증가되었으나 효소 정련 견사는 습열 처리에 의한 재배향 결정화보다 습열 처리에 의하여 팽윤되어 수축하는 과정에서 배향성이 저하되기 때문에 결정성은 더 이상 증가되지 않은 것으로 추측된다. 2. 정련 견사를 동결 처리하였을 때 강력과 신도는 약간씩 감소하는 경향이었으나 열 분해 온도와 IR crystallinity는 비누 정련 견사와 효소 정련 견사 모두 큰 변화가 없었다.

• 한국잠사곤충학회지
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• 제50권2호
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• pp.71-75
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• 2012

실크는 생체적합성이 우수하며, 기계적 강도가 좋고, 낮은 면역 거부반응과 다양한 형태로의 성형이 가능한 장점을 갖는 천연고분자이다. 그러나 실크는 물이나 일반적인 용매에 쉽게 용해되지 않는다. 본 연구에서는 실크 피브로인의 용해조건에 따른 실크 생체막의 특성 변화를 관찰하기위하여, 실크 함유량과 실크 용해시간을 달리하여 실크 피브로인 수용액을 만들고 이를 이용하여 실크 생체막을 제작하였다. 제작된 실크 생체막의 형태, 구조, 기계적강도 등과 같은 특징을 관찰 하였다. 비록 각 실크 생체막에 함유된 피브로인의 함량이 같을 지라도 생체막의 두께와 투명도에는 커다란 차이를 보였다. 하지만 실크 피브로인 용액의 분자량과 생체막의 형태에 있어서의 변화는 거의 없었다. 본 연구는 실크 피브로인의 용해조건에 따라 실크 생체막의 유연성, 강도, 투명도 등의 다양한 특성을 조절할 수 있다는 것을 보여주었으며, 최적의 실크생체막 제작 조건을 확립하였으므로, 향후 실크를 이용한 의료용품 개발에 많은 도움이 될 것으로 생각된다.

• International Journal of Industrial Entomology and Biomaterials
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• 제45권2호
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• pp.56-69
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• 2022

Silk is a unique natural biopolymer with outstanding biocompatibility, high mechanical strength, and superior optical transparency. Due to its excellent properties, silk has been widely reported as an ideal biomaterial for several biomedical applications. Recently, fluorescent silk protein, a variant of native silk, has been reported as a biophotonic material with the potential for bioimaging and biosensing. Despite the realization of fluorescent silk, the traditional degumming process of fluorescence silk is crude and often results in fluorescence loss. The loss of fluorescent properties is attributed to the sensitivity of silk fibroin to temperature and solvent concentration during degumming. However, there is no comprehensive information on the influence of these processing parameters on fluorescence evolution and decay during fluorescent silk processing. Therefore, we conducted a spectroscopic study on fluorescence decay as a function of temperature, concentration, and duration for fluorescent silk cocoon degumming. Sodium carbonate solution was tested for degumming the fluorescent silk cocoons with different concentrations and temperatures; also, sodium carbonate solution is combined with Alcalase enzyme and triton x-100 to find optimal degumming conditions. Additionally, we conducted a molecular dynamics study to investigate the fundamental effect of temperature on the stability of the fluorescent protein. We observed degumming temperature as the prime source of fluorescent intensity reduction. From the MD study, fluorescence degradation originated from the thermal agitation of fluorescent protein Cα atoms and fluctuations of amino acid residues located in the chromophore region. Overall, degumming fluorescent silk with sodium carbonate and Alcalase enzyme solution at 25 ℃ preserved fluorescence.

• Acta Via Serica
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• 제6권2호
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• pp.117-140
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• 2021

At the beginning of the Roman imperial period, moralizing authors criticized a material from the East that quickly gained popularity among the elites: silk. During Late Antiquity, the trade, production, and use of purple-dyed silks increasingly became the privilege of the emperors. While literature, court poetry, and laws give insights into the discourses surrounding silk, they are rather unspecific concerning silk qualities. This contribution analyzes the scattered descriptions of silks in Greek and Latin texts in a diachronic perspective, with a focus on the 1^st cent. BCE to the 4th cent. CE, paying particular attention to the terminology, products, origins, and qualities of silk. The aim is to build a framework for comparisons with archaeological silk finds and other textile terminologies along the Silk Roads. Here, the silk finds from the oasis city of Palmyra/Tadmor in modern-day Syria, dating from the 1st cent. BCE to the 2nd cent. CE, will be used as a case study for the early imperial period. Taking these silk finds as a comparison, it will be shown that Greek and Latin terminology does not match the variety of silks known in the Mediterranean. Rather, linguistic differentiations focus on the forms in which silk reached the Mediterranean, as skeins, yarns, and fabrics, as well as on the different kinds of silks that were produced in the West, namely pure silk and half-silken fabrics, checkered "scutlata" damasks, purple-dyed, and gold-embellished silks. In contrast, silks from the East were subsumed under the term for "silks from the silk people" or simply "silks". Moreover, ancient authors do not use the terms in the same way. These findings show the limitations of Western silk terminology and the importance of combining archaeological and written sources.

• 대한가정학회지
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• 제40권11호
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• pp.131-140
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• 2002

The purpose of this study is to investigate the dyeability, antibacterial activity and deodorization on cotton and silk fabrics dyed with extracted solution from gardenia. The results are as follows: 1. The K/S value of silk fabrics was higher than that of cotton fabrics, and the K/S value was slightly increased by mordanting with $SnCl_2.2H_2O$ and $K_2Cr_2O_{7}$ on cotton and silk fabrics. 2. Cotton fabrics showed yellow from GY to Y and silk fabrics showed yellow or reddish yellow from GY to Y-YR. 3. The fastness to washing of cotton fabrics was very poor and that of silk fabrics was middle or lower, excluding good fastness to wool contamination of both fabrics. The fastness to dry cleaning and rubbing of both fabrics was very good. The fastness to perspiration of cotton fabrics was middle or higher, but that of silk fabrics was much better than that of cotton fabrics. The fastness to the light of both fabrics showed very poor with 1 grade. Dyeing fastness was slightly improved by mordanting on both fabrics. 4. Silk and cotton fabrics did not show antibacterial activity, but the activity of silk fabrics was higher than that of cotton fabrics. The antibacterial activity was increased by mordanting. 5. The deodorization of dyed cotton and silk fabrics was excellent, and that of silk fabrics showed better than that of cotton fabrics.

• 한국염색가공학회지
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• 제13권5호
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• pp.1-1
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• 2001

As the basic study to investigate the mechanism of improvement in the dyeing fastness of natural dyes on silk fabrics the optical behavior of tannin solution, the optimal condition of tannin treatment and the changes of the physical structure of silk fabrics were studied in the treatment of tannin. Results obtained were as follows ; 1.The K/S values of tannin-treated silk fabrics were not changed by tannin content on silk fabrics but yellowing of tannin in treatment condition. 2. As the concentration of tannin was increased in its treating condition, the tannin content and K/S vague of tannin-treated silk fabrics were increased. 3. Because tannin gave rise to yellowing by hydrolysis and oxidation at high temperature, the higher tannin-treating temperature was, the lower the tannin content and K/S values of silk fabrics 4. The tannin content of silk fabric was higher in acidic treating condition and the highest K/S value was showed at pH 5. 5. As the tannin content of silk fabric was increased, the value of ζ -potential of it became negative. 6. As the tannin content of silk fabric was increased, the crystallinity and crystallite size of it were decreased. This meant that the fraction of amorphous region in the fibers increased. And the degree of orientation of it was decreased with the tannin treatment.

• 한국염색가공학회지
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• 제13권5호
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• pp.289-297
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• 2001

As the basic study to investigate the mechanism of improvement in the dyeing fastness of natural dyes on silk fabrics the optical behavior of tannin solution, the optimal condition of tannin treatment and the changes of the physical structure of silk fabrics were studied in the treatment of tannin. Results obtained were as follows ; 1 The K/S values of tannin-treated silk fabrics were not changed by tannin content on silk fabrics but yellowing of tannin in treatment condition. 2. As the concentration of tannin was increased in its treating condition, the tannin content and K/S vague of tannin-treated silk fabrics were increased. 3. Because tannin gave rise to yellowing by hydrolysis and oxidation at high temperature, the higher tannin-treating temperature was, the lower the tannin content and K/S values of silk fabrics 4. The tannin content of silk fabric was higher in acidic treating condition and the highest K/S value was showed at pH 5. 5. As the tannin content of silk fabric was increased, the value of $\xi$ -potential of it became negative. 6. As the tannin content of silk fabric was increased, the crystallinity and crystallite size of it were decreased. This meant that the fraction of amorphous region in the fibers increased. And the degree of orientation of it was decreased with the tannin treatment.

• 한국패션뷰티학회지
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• 제4권3호
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• pp.45-49
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• 2006

Silk Industry doesn't have enough strategic ability to plan the product for internal and external strong competition and global luxury trend in Jinju. To provide silk fashion planning information and planning method, this study investigated the fabric planning system, such as product system and problems, the method of seeking information, via questionnaires for 68 Jinju silk companies. The results were that the Korean traditional garment, Han-bok and lining of that were given more wight in Jinju Silk for domestic, and the next, neckties. These silk had produced by OEM and didn't have almost my planning ability, but nowadays buyers wanted to get some planning ideas from manufactures, not giving any planning guideline before production, more and more. For Jinju Silk Fabric Companies, planning direction of silk fabrics of vision were needed, that had to be adaptable to manufacture situation and applicable to market.

• 한국잠사곤충학회지
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• 제43권1호
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• pp.41-48
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• 2001

The purification, dissolution and powdering of stained waste silk obtained from weaving and dyeing process were studied for the surface modification of textile fabric and plastic materials. The whiteness of stained waste silk could be improved through degumming and bleaching with sodium hydrosulfite. The water-soluble fibroin solution can be obtained by dissoving the degummed waste silk in a boiling solution of 50% calcium chloride for 60 minutes. The salts and heavy metals contained in fibroin solution were removed by electric dialysis, wool fiber filtration and gel filtration chromatography. The fibroin powder was prepared by using a fine grinder after the alkali treatment for weakening the silk fiber. The fine fibroin powder of particle size around 30 ㎛ was obtained with a ultra fine-mill, while it was finer below 10 ㎛ with a ball-mill. The dissolved or powdered silk was applied to the surface of fabric with addition of the binder (a urethane resin). The moisture content of polyester and nylon fabrics treated with the silk solution was improved due to hygroscopic property of silk. The fine fibroin powder mixed with the binder ws coated on the surface of synthetic film by use of the air pressed sprayer. It was revealed that the hygroscopicity as well as the softness of fibroin powder coated film was much improved. Therefore, it is thought that the fine silk fibroin powder is applicable as an coating agent for the surface modification of plastic and synthetic leather.