• 한국의류학회지
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• 제25권2호
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• pp.268-274
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• 2001

Dyeing properties of the colorants extracted from pomegranate hull on silk fabric were investigated. Pomegranate colorants were characterized by FT-IR analysis. Effects of dyeing condition and mordanting on dye uptake, color change and colorfastness were explored. Pomegranate colorants showed high affinity to silk fiber and its isotherm adsorption curve was Langmuir type. Therefore, ionic bond was involved in the adsorption of pomegranate colorants on to silk fiber. Mordants except Fe did not significantly increase dye adsorption. Pomegranate colorants produced mainly yellow color on silk fabric, but the silk mordanted with Fe showed yellow red color. Fastness to washing, perspiration, and rubbing was not improved by mordanting treatment, but light colorfastness was increased by Fe mordant.

• 대한가정학회지
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• 제30권2호
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• pp.53-60
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• 1992

The effects of Aspergillus fumigatus(AF) and Penicillium citrinum(PC) deterioration of test materials were examined. When the fungi were inoculated to the silk fibers placed on Czapeck agar, malt extract agar and potato agar, they grew best on potato agar which in that context was chosen as a basal medium for deterioration studies. The tensile strength of silk fiber on which AF was grown for 30 days decreased by 28.5% with a concommitant increase in elongation by 40.1%. Silk fabric lost the weight by 4.74%, when inoculated with AF while it lost the weight by 3.37%, when inoculated with AF. When AF and PC were inoculated separately on silk fibers, tensile strength decreased by 76.3% and 56.4%, respectively, with concommitang increases in elingation by 53.1% and 37.8% respectively. The silk was damaged more severely by AF than PC, when they were observed by scanning electron microscope.

• Fibers and Polymers
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• 제6권3호
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• pp.181-185
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• 2005

Silk fibroin (SF) nanofibers were prepared by electrospinning and their application as an enzyme immobilization support was attempted. By varying the concentration of SF dope solution the diameter of SF nanofiber was controlled. The SF nanofiber web had high capacity of enzyme loading, which reached to $5.6\;wt\%$. The activity of immobilized a-chymotrypsin (CT) on SF nanofiber was 8 times higher than that on silk fiber and it increased as the fiber diameter decreased. Sample SF8 (ca. 205 nm fiber diameter) has excellent stability at $25^{\circ}C$ by retaining more than $90\%$ of initial activity after 24 hours, while sample SF11 (ca. 320 nm fiber diameter) shows higher stability in ethanol, retaining more than $45\%$ of initial activity. The formation of multipoint attachment between enzyme and support might increase the stability of enzyme. From these results, it is expected that the electrospun SF nanofibers can be used as an excellent support for enzyme immobilization.

• 한국잠사곤충학회지
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• 제37권1호
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• pp.33-38
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• 1995

견 fibroin을 8M LiBr 수용액에 침지하여 연신처리에 의한 견의 구조와 물성변화를 시험해 보았다. 1. 연사의 역학적 성질은 8M LiBr 수용액의 처리온도 상승에 따라서 강도와 신도는 증가하나 Young's율은 감소하는 경향이었다. 8$0^{\circ}C$ 처리의 X선회절에 있어서는 염축에 의해 분자배향은 흐트러지나 SilkII형의 결정구조는 변하지 않았다. 2. 8M LiBr수용액을 사용하여 8$0^{\circ}C$에서 1시간 처리하면 160%정도 연신이 가능하며 고연신시의 역학적 성질에 있어서는 강도와 Young's율은 증가하고 신도는 감소하였으나 X선회절에서는 연신율의 증가와 함께 결정이 고배향화되는 경향이었다. 3. DSC의 시차열 Thermogram에서 무처리의 연사와 8M LiBr 수용액에 처리되어진 미연신의 연사사이에는 열분해거동이 다른 것이 관찰되었으며 열분해 최대 Peak점의 온도는 연신율의 증가에 따라 조금씩 고온쪽으로 이동함으로써 X선회절사진의 결과와 일치하고 있다.

• 한국섬유공학회:학술대회논문집
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• 한국섬유공학회 2003년도 The Korea-Japan Joint Symposium
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• pp.87-87
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• 2003

Three kinds of acrylic polymers containing silk protein were synthesized, which are (1) blending of silk fibroin (SF) fiber and polyacrylonitrile (PAN); (2) graft-copolymer of PAN onto SFs; (3) random-copolymer synthesized by copolymerization of acrylonitrile (AN) and silk fibroin peptide (SFP) with vinyl groups, and their solubility, thermal property, and moisture absorption was investigated, respectively. These polymers have difference solubility and attributable to their structure. Their excellent thermal stabilities and better moisture absorptions were indicated.

• 복식문화연구
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• 제21권6호
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• pp.844-859
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• 2013

This study investigated the characteristics and changes of cotton and silk textile production in Honam district, especially in Gurye, Jella Province from the 1930s to the 1980s. To do this, research method in this study was both literature and fieldwork research and results were as follows. First, in terms of cotton fiber cultivation of Gurye, Chinese Cotton(在來綿) has been substituted for America Cotton(陸地綿) and additionally, Yellow Cotton (黃綿) has been cultivated in the 1930s. Also, in terms of silk fiber cultivation of Gurye, Joseon Silkworm has been substituted for Japanese Silkworm by inflowing the Japanese mulberry tree. Second, in terms of spinning method, cotton spinning has been conducted at every house by an individual tool from the 1930s to the 1950s and has been gradually changed to mechanization by market shop equipped with mechanized cotton gin and cotton whipping tool. However, there have been no changes in silk spinning method from the 1930s to the 1980s. Third, loom type has been changed from the traditional Korean back-strap loom to the treadle loom between the 1930s and the 1940s. Fourth, dyeing was conducted by chemical dyestuff after weaving. The circulation of textile was done through the joint market by Japan in the 1930s~1950s and has changed to the market sales by producers since the 1950s. Fifth, since the 1970s, the outputs of cotton and silk textile of Gurye have been reduced. This was connected with the westernization and the inflow of the synthetic fiber and cloth in cotton and was related to the changes of the nation policy and silk fiber inflow from the china to the Korean farm villages.

• International Journal of Industrial Entomology and Biomaterials
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• 제8권2호
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• pp.195-200
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• 2004

Trypsin can be immobilized on silk fibroin fiber (SFF) by introducing several spacer arms, such as ethylene diamine (ED), bovine serum albumin (BSA) and silk sericin (SS). Direct immobilization on silk fiber (SFFGA) has low activity because of the steric hindrance between the trypsin and substrate. The introduction of spacer arms onto SFF-GA can enhance the activity of trypsin by reducing the steric hindrance. When ED is used as a spacer arm, the activity of trypsin has increased but its stability decreased due to the increased hydrophobicity of SFF. BSA and SS, as a spacer arm, have better results in both activity and stability. SFF-BSA shows some decrease in the specific activity due to improper immobilizatin. SFF-SS maintained 90% of its initial activity even after 12 hrs incubation at $50^{\circ}C$. In the case of repeated hydrolysis of silk sericin with immobilized trypsin, SFF-GA and SFF-ED lost 50% of their initial activity right after first run, whereas SFF-BSA and SFF-SS maintained 80% of their initial activities even after 5 runs. Higher operational stability is due to increased hydrophilicity of SFF by introducing hydrophilic spacer arms such as BSA and SS. The high content of serine in SS increases the hydrophilicity of SFF resulting the best results among other spacer arms.

• 한국섬유공학회:학술대회논문집
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• 한국섬유공학회 2001년도 가을 학술발표회 논문집
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• pp.392-396
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• 2001

Natural silk is formed by two proteins ; the crystalline fibroin (inside the silk thread) and amorphous sericin (as a tube outside the thread). The degumming process is used th eliminate the external sericin prior to dyeing ： generally it makes use of soaps at pH 10. (omitted)

• 한국의류학회지
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• 제22권2호
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• pp.224-232
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• 1998

Protease is mixtured in detergent to remove protein-soil easily. It must not act on the any fiber except protein-soil during laundry. So the purpose of this study is to investigate how protease is affect the fiber, particulary the protein-fiber. For this purpose, silk, wool and nylon are selected as samples, and the extent of the damage was estimated as tensile strength and surface condition (that is fibrillation). The results are as follows. The tensile strength of fiber treated with protease were lowered at enzyme concentration 0.1%, temperature 4$0^{\circ}C$ , and, as washing time was longer, it was lowered more. And it was showed that the surface of fibers were fiblliated by protease during washing. From this results, it was found that protease damaged protein-fiber. The damage of silk was the largest of all, and wool was less damaged than silk, because it has the scale (cuticle) on the outside. Additionary, an influence of surfactant on damage of fiber was little about three fibers, but, the fibers were damaged more by the binary nonionic-surfactant and protease mixture than by protease only.

• 한국잠사곤충학회지
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• 제23권1호
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• pp.47-55
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• 1981

絹織物加工을 實需要者의 利用度를 增加시키기 爲해 多年間 여러 사람에 의하여 硏究되어 왔으나 天然織維이기 때문에 加工方式으로 性質을 變化시키기는 어려워서 滿足스러운 精度로 이루어지지 못하고 있는 實情에 있다. 絹織物加工은 勿論 그 缺點을 補强하는 同時에 商品的價値도 向上시키는데 目的이 있는데 때로는 有名商標가 品質以上으로 販賣를 左右하는 例도 많다. 特히 絹制品은 歡迎을 받지 못하고 있는 實情에 있다. 이러한 問題點을 解決하기 爲해 筆者는 多年間 硏究를 持績하여 왔든바 一般絹織物의 浸潤後 乾燥時間보다 半減된 時間에 乾燥되는 所謂 Wash and Wear絹加工方法의 開發을 하기에 이르렀다. 그리고 그 加工費用이 極히 經濟性인 탓으로 아무런 부담감 없이 加工處理할 수 있는 特徵을 갖이고 있었다. 1. 繭絲는 吐絲營繭曲線이 S字型으로 되어 있어 浸潤時에는 原狀復舊의 性質이 있어 屈曲狀態를 이룩하게 되어 本加工絹織物이 Wash and Wear이기는 하나 가벼운 다림질이 必要하였다. 2. 이러한 加工은 絹絲蛋白質의 變性을 加工過程에서 1% D.I.S.溶液에 3時間 處理하여 變性誘發시킴으로서 可能하였다. 3. 加工絹의 防皺度, 剛乾度를 洗濯回數를 反復하면서 調査하여 본 結果 未處理絹보다 惡化되지 않았다. 4. 未加工絹도 水洗, 乾燥를 反復하게되면 스스로 變性되는 事實을 알았다. 5. 處理絹과 未處理絹의 强力伸度面의 差異가 없었다.