The objective of this research was to study the antibacterial activity of 16 samples of indigo dyed fabrics that are produced and sold in Sakon Nakhon Province. Effect of moisture and pH of indigo dyed fabrics on bacterial growth were also determined. The result of the study shows inhibition of S. aureus TISTR 746 and E. coli TISTR 073 by agar diffusion plate test all samples could inhibit Saureus TISTR 746 (accounted as 100%) and only 9 samples could inhibit E. coli TISTR 073 (accounted as 56.25%). Whereas the study of antibacterial activity by AATCC test method 100-2004 at 24 hours was found that the natural indigo dyed fabrics code A3-1 could inhibit both bacterial strains in the highest level. The result also shows the effect of moisture and pH of indigo dyed fabrics on bacterial growth it was found that the increased humidity levels of indigo dyed fabrics have effect on the reduction of the inhibition efficacy of both strains. While indigo dyed fabric with pH 3.0 was found to inhibit most of the growth of both strains. In addition images obtained using a scanning electron microscope (SEM) could clearly confirm the property of indigo dyed fabric on inhibition of S. Aureus TISTR 746 and E. coli TISTR 073.

The purpose of this research was to study the dyeing polyamide/elastane fabric with natural indigo using exhaustion dyeing process. The effects from the concentration of the natural indigo dye thiourea dioxide and sodium hydroxide were investigated. The colour of each dyed material was investigated in term of the CIELAB (L* a* and b*) and K/S value. The color fastness to washing rubbing perspirdation light water sea water and chlorinated water of the dyed samples was determined. The bursting strengrh of dyed polyamide/elastane was evaluated. The best vatting condition was at 50 ̊C for 30 minutes. The optimal formula of dyeing polyamide/elastane fabric using natural indigo was prepared by mixing 200 g/L natural indigo paste 60 g/L thiourea dioxide 1 g/L sodium hydroxide. The fabric dyed in the solution of indigo vatting a shade of dark blue colour. The color fastness to light washing water sea water perspiration and chlorinated water were good to very good. However the rubbing fastness results showed fair level. The bursting strength of dyed fabrics is less than the undyed fabric 3.1%. The optimal ratio of discharge printing on polyamide/elastane fabric were compose of 70 % starch print paste and 30 % discharging agent (KMnO4). The pattern design produced from these combinations in the printing areas on fabrics showed an excellent standard of printing quality. The results confirmed that natural indigo dyes have potential applications in polyamide/elastane fabric dyeing and the dyed fabric can be used produce women’s intimate apparel.

This project was for the development of apparel accessories from indigo dyed fabrics in Sakon Nakhon Province. This project aims to bring indigo dyed fabrics to be developed into apparel products in UNISEX pattern so that it put on in everyday life and used all genders without restrictions. Today the sexual choices increase to introduce the concept of UNISEX pattern as an alternative. From the questionnaire the consumer needs the apparel accessories could be used in everyday life by using the principles of apparel accessories as a guide to design. Color tone used cool color (Cool Hues). 0The cool color was comfortable. The project maker chose to use indigo dyed fabric to make prototype products and also increase the value of indigo dyed fabric as well. 0 The samples used 100 people who interested in textile products at Chatuchak Market. The tools used questionnaires. The collected data were interview. The statistics used percentage. The study indicated that analysis assessed on the material shape products and the strength. Using silk indigo dyeing products were suitable in 78 percent and the material products were suitable in 42 percent. The shapes of products were suitable in the bag 64 percent and shoes 55 percent respectively. The product color was 64 percent and the durable strength for use in 52 percent.

The purpose of this project were to study floor lamp from indigo dyed fabric process of condominium. The researcher were interested in floor lamp from indigo dyed fabric product that could be used practically and beautiful. It were inspired by the mangrove tree root that grew out of the trunk to adhere. It made the mangrove tree root shape look like legs outstretched to suit for making it. The result of the floor lamp from indigo dyed fabric design were the shape obtained from the root of the mangrove to make the floor lamp from indigo dyed fabric design for use. It found that the floor lamp indigo dyed fabric could be used in residential condominium as well. There was a light that was not too dull or translucent when the light turned off. It would be beautiful when turned on to make the color and pattern more sharply.

This project was to design and development of indigo dyeing bag for men. The objective were to study the pattern and type of bag in order to get a new one and allow consumers to choose more that it were a folk wisdom that had a long time. There was an own identity and the villagers occupation. Setting it inspired in the pattern design from the overlapping curves of mountains. The color tones used in the set of indigo dyed bag design were to use cool tones. The materials used to make the bag consist of indigo dyed fabric genuine bull leather zipper mesh fabric adhesive fabric elastic magnetic button lining and pincer string bag lock. The bag strap used nylon string fabric to strength. The opinion assessment to the backpacks chest bag waist bag and belt bag from the indigo dyed fabric in Sakon Nakhon province. The sample group responded the following questionnaire: Bringing the indigo fabric to make the suitable product was the most 59 percent. The suitable materials were the most 42 percent. The suitable product shape was the most 55 percent. The suitable colors were the most 64 percent. The durability usage was the most 52 percent