Browsing by Author "Bhargava, Deepti"
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ThesisItem Open Access Development of training module for the problems of carpet weavers of pithoragarh and creation of carpet designs through CAD(G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2008-08) Bhargava, Deepti; Goel, AlkaThe tradition of carpet weaving in India is centuries old. The origin of carpet weaving in India goes to 16th century. The Mughals brought Persian weavers to India and learned the Persian technique of carpet weaving from them. The word carpet is a thick fabric used for spreading on floor or stairs, made commonly of wool, frequently patterned in colours and made by knotting short length of weft threads during weaving. Major carpet production centres of Uttarakhand are Dehradun, Pithoragarh, Almora, Bagheshwar etc. Pithoragarh (Uttarakhand) was selected as locale of the study because carpet weaving is more concentrated here as compared to other centres because a large number of Bhotia people are living here. They have inherent talent of knotting of carpets which is passed through generations. These carpets are limited to the state market only because weavers were not having knowledge about the carpet finishing. Moreover, they were following the same carpet designs since many generations. Therefore, training module was developed and training was imparted to the carpet weavers of Pithoragarh. 90% weavers were found to be interested in adopting the training regarding carpet finishing. Major objective of the training was to develop the carpet finishing skills in the carpet weavers. The content areas of the training were finishing of loose warp ends, clipping of piles, binding of carpets and moth proofing. As carpet weavers were following the same designs since generations, they were encouraged to create new designs. Thirty five carpet designs were developed by researcher using Corel Draw 12 software. These designs were visually evaluated by the thirty respondents. Design no. 34, 33 and 9 were adjudged as 1st, 2nd and 3rd best designs among all the carpet designs. Samples of three best selected designs were also got prepared from weavers. These designs were shown to the weavers to make them aware of new carpet designs. Weavers were encouraged to create and practice new carpet designs. From the results obtained in the present study, it can be concluded that after development of training module and imparting training to the carpet weavers, the carpet weavers learned and adopted the carpet finishing skills. Thus, the quality in terms of finishing and overall appearance will be improved in future after application of these skills. Carpet weavers were also made aware about the importance of new carpet designs in order to enhance the beauty of the carpets.ThesisItem Open Access Microbial dyes from Pseudomonas fluorescens and Pseudomonas aeruginosa: extraction and optimization of dyeing process for textiles(G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2012-12) Bhargava, Deepti; Shahnaz JahanThesisItem Open Access Microbial dyes from Pseudomonas fluorescens and Pseudomonas aeruginosa: Extraction and optimization of dyeing process for textiles(G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2012-12) Bhargava, Deepti; Shahnaz JahanThe world is shifting from synthetic to nature based products in today’s era. The recent realization that the intermediates and chemicals used in synthetic dyes are toxic, and thus hazardous to human health and environment, has led to the revival of interest in the non- toxic and eco-friendly natural dyes. Emphasis has been given to identify new sources of raw materials to be used as a dye and to standardize the procedures for their use. Therefore, present research work was carried out with the objectives to optimize the growth conditions of Pseudomonas fluorescens (Pf-6) and Pseudomonas aeruginosa (Pa), to optimize the dyeing variables, to see the effect of synthetic and natural mordants with dye using different mordanting methods, to assess the color fastness of dyed fabric, to test the antimicrobial activity and toxicity of the selected dye sources. Maximum pigment was extracted from Pseudomonas fluorescens (Pf-6) when it was inoculated on King’s B agar at 7pH and incubated for two to seven days at 250C in BOD incubator. In case of Pseudomonas aeruginosa (Pa), maximum pigment can be extracted when it was inoculated in King’s B broth at 7pH and incubated for two to seven days at 250C in incubator shaker. Best colour was obtained on silk fabric when it was dyed with Pseudomonas fluorescens (Pf-6) dye keeping the pH 5 of the dye solution, 2 percent concentration of the dye, 1:30 material to liquor ratio and dyed at 800C for 75 minutes. Similarly, cotton fabric was dyed with Pseudomonas fluorescens (Pf-6) dye keeping the pH 5 of the dye solution, 2 percent concentration of the dye, 1:30 material to liquor ratio and dyeing was done at 800C for 90 minutes in order to obtain best colour. Each silk and cotton fabric was dyed with Pseudomonas aeruginosa (Pa) dye with the optimum dyeing variables including pH 7 of the dye solution, 1 percent concentration of the dye, 1:50 material to liquor ratio and dyed at 800C for 75 minutes for obtaining best colours. Best colours on silk fabric were obtained when they were mordanted with each mordant i.e. 3 g bahera, 4 g walnut bark, 0.02 g ferrous sulphate and 0.03 g tannic acid along with Pseudomonas fluorescens (Pf-6) dye. Similarly, best colours on cotton were obtained when it was mordanted with each mordants i.e. 4 g walnut bark, 3 g pomegranate rind, 0.02 g ferrous sulphate and 0.02 g alum in combination with Pseudomonas fluorescens (Pf-6) dye. In case of Pseudomonas aeruginosa (Pa) dye, best colours on silk fabric were developed when it was mordanted with each 3 g of harad and walnut bark and 0.03 g of each tartaric acid and tannic acid. Similarly, 4 g of each bahera and pomegranate rind and 0.04 g of each alum and tannic acid was used along with Pseudomonas aeruginosa (Pa) dye to obtain best colours on cotton fabric. Overall colour fastness properties of both the dyes were improved with the use of natural and synthetic mordants. Both the dyes were found to have antimicrobial properties and non toxic in nature.