• Journal of Korean Home Economics Education Association
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• v.25 no.1
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• pp.79-94
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• 2013

In this study, the teaching-learning materials and the plan using persimmon juice dyeing, which is one of the traditional natural dyeing methods of Korea, were developed for the purpose of inspiring further awareness of our traditional clothing life-culture. A questionnaire was designed to make a survey on the educational effect, and t-test and Kruscal-Wallis test were conducted to test the significant differences between pre- and post-lessons. A correlation analysis between culture awareness and its education awareness was also done. These prototypes were applied to high school Technology Home Economics classes under the theme, 'Making living goods with persimmon juice dyed fabrics'. Examining the changes in students' awareness of traditional images, and changes in their interest and attitude towards learning in those classes led to the following results. First, as a result of applying LT cooperative learning in order for an understanding of the formation of clothing life-culture and the process of persimmon juice dyeing, many original handicrafts with modern sense were created. Second, a comparative analysis between pre- and post-lessons on the change in students' degree of awareness of traditional clothing life-culture and its education showed that students' awareness had risen after the class; the data was collected from three separate sample groups which had been clustered according to their initial degree of awareness, i.e. high, middle, and low, and the group that scored the lowest before the class showed the greatest improvement. Third, feedback surveys on 'Making living goods with persimmon juice dyed fabrics' classes returned with scores greater than 'moderate', thus revealing that the students' concern and interest towards traditional clothing life-culture hae been enhanced through the class experience. Their attitude had also become more positive. Fourth, since learners with more awareness of the traditional clothing life-culture also showed more awareness of the need for an education designed to promote the culture, a positive correlation between the two had been found. As explained above, the teaching-learning materials and the plan that had been developed for this study has caused a deeper understanding of the value and significance of the traditional natural dyeing and clothing life-culture, and has therefore brought about an educational effect that powers idea creation.

• Journal of the Korean Society of Clothing and Textiles
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• v.28 no.7
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• pp.882-891
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• 2004

The purpose of this study was to improve dye effect and method in order to facilitate the use of persimmon juice dyeing. Silk fabrics were pad-dyed to 100% pick-up using padding machine after dipping in persimmon juice extracted from unripe persimmons indigenous to Jeju. The color of dyed silk fabrics by padding method was more even and repeatable than that by traditional hand method. Persimmon juice concentrations were 4 types 10, 25, 50 and 100%. The silk fabrics were pad-dyed to 100% pick-up and were repeatedly dyed two times and three times with 100% concentration. The higher the concentration, the more color deepened. UV Irradiation instead of sunlight was applied to color developing. Irradiation times were shortened to 1-8hrs. Color values which reguired 30-50 hrs. in sunlight irradiation. were obtained in 3-5 hrs. with UV irradiation. Tensile strengths of silk fabrics in UV irradiation decreased but not decreased in sunlight irradiation. Elongations of silk fabrics in sunlight irradiation increased but decreased in W irradiation. Drape stiffness increased up to three times.

• Proceedings of the Korean Society of Dyers and Finishers Conference
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• 2007.11a
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• pp.111-112
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• 2007

• Proceedings of the Korean Society of Community Living Science Conference
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• 2011.10a
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• pp.120-121
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• 2011

• Journal of the Korean Society of Clothing and Textiles
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• v.28 no.6
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• pp.795-806
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• 2004

Unripe indigenous persimmons which contain rich tannins have been used as natural dye materials traditionally and have been using continuously for dyed clothes named Gal-ot in Jeju. Those persimmons were cheap and easy to use as dyes because of inedible and widely cultured in Korea. Persimmon juice dyes not only make fabrics brown-color but also give functional and hygienic properities such as stiffness, air ventilation of clothes, antibacterial activity, protectivity against ultraviolet light. However there are several serious problems which are ristriction of dyeing periods, longtime irradiation, uneven color and low color fastness etc. in persimmon juice dyeing. This study purpose to improve dye effect and method in order to enlarge useability of persimmon juice dyeing. Cotton fabrics were pad-dyed to 100% pick-up using padding machine after dipping in persimmon juice extracted from unripe persimmons indigenous from Jeju. It was possible and available to control pick-up rate. The color of dyed cotton fabrics by padding method was more even and repeatable than which by traditional hand method. Persimmon juice concentrations were 4 types of 10, 25, 50 and 100％. The more concentration increased, the more color deepened. UV Irradiation instead of sunlight was applied to color developing. Irradiation times were shortened till 1∼8 hrs. Same color values could be taken without water wetting which were required in sunlight irradiation. Tensile strengths of cotton fabrics pad-dyed with low concentration of persimmon juice decreased but recovered at high concentrations. Elongations(％) of cotton fabrics pad-dyed with persimmon juice were increased 1％ more than undyed cotton in sunlight irradiation. Drape stiffness increased upto double times as much as.

• Journal of the Korean Home Economics Association
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• v.43 no.2
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• pp.115-126
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• 2005

Environmentally and human compatible chitosan were pretreated on cotton fabrics which were then dyed with 100% persimmon juice. The chitosan concentration was 1% and the chitosan types were high molecular weight chitosan (1980cps), low molecular weight chitosan (18첸), chitosan oligomer and water soluble chitosan. The properties of the fabric surfaces, the dyeabilities, the color fastnesses, the antibacterial activities, the strengths, the elongations and the drape stiffnesses were evaluated. The properties of the chitosanpretreated, persimmon juice-dyed cotton fabrics (CLP) were compared to those of the untreated (CN), chitosan treated (CL) and persimmon juice-dyed fabrics (CP). The results were as follows. The fibers extruded from the surface of CN decreased on CP. The air between the fibers within CN were substituted by chitosan solution or persimmon juiceand decreased within CLP according to SEM observations. The effects of chitosan treatment, the chitosan molecular weights and the degrees of deacetylation of chitosan on the dyeabilities of the persimmon juice-dyed cotton fabric were not distinct. The curing after chitosan padding improved the dyeabilities of CLP compare to noncuring. The strengths of CP decreased and those of CL increased, compared to those of CN. The strengths of CLP were greater than those of CP. The elogations of CP and CL were greater than those of CN. The strengths and elongations of CLP were greater than those of CN. The chitosan treatments improved the strengths but not the elongations. The drape stiffnesses of CL, CP and CLP were greater than those of CN. The antibacterial activites of chitosan pretreated, persimmon juice-dyed cotton fabrics against Staphylococcus aureus were increased by more than 98% by persimmon juice.

• Journal of the Korean Home Economics Association
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• v.43 no.3 s.205
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• pp.119-129
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• 2005

The antibacterial activities against Staphylococcus aureus of persimmon juice and persimmon juice dyed cotton fabrics were eveluated. We investigated the effects in pursuit of the proper treating conditions to use persimmon juice dye for comfortable and hygienic doffing. The antibacterial activities were estimated by test method KS K 0693 and the percentage reduction of bacteria at various contact conditions of test materials and bacteria. The results were as follows. no bacteriostatic activities (BS) of persimmon Juice were more than $99.98\%$ and the increase was dose-dependent according to concentration from $1\%$ to $10\%$. However, bactericidal activities (BC) were not found BS increased from $99.97\%$ to $100\%$ and BC from $79.74\%$ to $100\%$ with increasing persimmon juice concentration of cotton fabrics from $10\%$ to $100\%$. Antibacterial effects were significantly shown at $10\%$ of persimmon juices. BS increased from $75.69\%$ to $100\%$ and BC from $65.89\%$ to $100\%$ over 18 hours of contact time and continued for 50 hours. BS of $100\%$ persimmon juice dyed cotton fabrics increased from $96.56\%$ to $98.20\%$ and BC from $-136\%$ to $65\%$ at different incubation temperatures of $17\pm1^{\circ}C$, $27\pm1^{\circ}C$ and $37\pm1^{\circ}C$. BS ranged from $99.06\%$ to $99.99\%$ and BC from $84.31\%$ to $95.10\%$, according to the initial bacterial density from $4.08\times10^7$ to $4.08\times10^5$. Sixty-seven percent of subjects of answered not to smell any odor from persimmon juice dyed cotton fabrics by subjective test.

• Journal of the Korean Society of Clothing and Textiles
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• v.30 no.1 s.149
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• pp.115-124
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• 2006

Natural dyes are environmentally and human compatible. But they are not various or not fast in color. The mixed dyeing have been attempted to solve these disadventages of natural dyes. The persimmon juice dyed fabrics have brown-color and good hygienic properities however low color fastness. The onion dyeing show similar brown-color and have good color fastness caused by querectin existed in onion outer skins. Mixed dyeing was carryied out on silk fabrics using persimmion juice and onion outer skin extract in this study. The mixing method were persimmon juice dyeing and then onion dyeing(P-O), onion dyeing and then persimmon juice dyeing(O-P) and dyeing in the mixture of persimmon juice and onion outer skin extract simultaneously(P+O). The mordants were none-mordent, gallic acid after-treatment and alum after-treatment. Several persimmon juice dyed fabrics were irradiated for 2 hours before onion dyeing(PU-O). The color values of dyed silk fabrics were as follows. The persimmon juice dyed silk fabric developed to yellow-red color after 2 hours of uv irradiation. Onion dyed fabrics show similar yellow-red color after dyeing without uv irradiation. The effect of alum after-treatment on color difference were highest in onion dyeing. The dyeabilities of both P-O and O-P were higher than persimmom juice dyeing and onion dyeing. The dyeabilities of P+O was lower than persimmom juice dyeing and onion dyeing. The value of color difference of alum-treated fabric was the highest. The color difference of P-O and O-P caused from 2 to 4 hours of uv-irradiation were lower than those of persimmon juice dyed fabrics. Onion skin extract could prevent the color-change of persimmon juice dyed fabrics in mixed dyeing. The color difference of PU-O was higher than the P-O.

• Proceedings of the Korea Society of Costume Conference
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• 2004.08a
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• pp.332-333
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• 2004

• Proceedings of the Korea Technical Association of the Pulp and Paper Industry Conference
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• 2010.04a
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• pp.341-346
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• 2010