Journal of Textile Science & Engineering

This review addresses the potential wet processing techniques for textile fibre extraction, mainly centering on bamboo, one of the most important and newly developed textile natural fibres. The literature survey revealed that although some reports are available on the use of these extracts on different textile substrates viz. cotton, wool, nylon, silk, polyester etc., but yet reports concerning the use on Bamboo fibre/fabric is scanty. Natural bamboo fibers have excellent properties suggesting that there is a good potential for them to be used in textiles; however, they have not received the attention that they deserve owing to their coarse and stiff quality. The high lignin content of the fibre is the major cause of its stiffness.

Natural dyes may be defined as the dyes which are extracted from the flower petals, leaves, barks, steams to ensure environmental friendly dyeing of the sample. Natural dyes are very popular for their different hues and environmental friendly nature but most of the natural dyes are non-substantive and must be applied on textiles with the help of mordants. In this study, natural dyes were extracted from marigold flower petals and applied on 100% cotton knitted fabric in exhaust method using six different metallic salts: K₂Cr₂O₇, FeSO₄, NiSO₄, CuSO₄.5H₂O, potash alum, and SnCl₂ during pre-mordanting prior to dyeing. The consequences of altering different types of mordanting agents during mordanting were evaluated by means of various fastness properties. From overall observation it has been found that the fastness properties of the dyed sample having mordanted with potash alum showed excellent result in case of all fastness properties.

In order to improve the cycle stability of polyaniline and graphene composites, the hummers method was used to prepare graphene oxide (GO), which was modified by amination. On the basis of this, polyaniline was prepared by in situ oxidative polymerization. Aniline grafted graphene (rGO-PANI) composite. The morphology of the structure was characterized by scanning electron microscopy (SEM). X-ray diffraction (XRD) was used to characterize its crystal structure. The infrared (FTIR), Raman and Ra-Vi (UV-vis) spectra were used to characterize the functional structure. The conductivity was tested by four probes, and the electrochemical performance of the electrochemical workstation was tested and compared with the non-grafted polyaniline/graphene composite (rGO/ PANI). The results show that polyaniline in the polyaniline grafted graphene composite is covalently bonded to graphene. The polyaniline grafted graphene composite material has improved cycle stability, and the capacity is only lost by 5% after 100 cycles, while the non-graft type loss is 15%. At the same time, the material has good electrical conductivity, the resistivity can reach 0.3Ω•cm, and has good charge storage performance, and the mass ratio capacitance can reach 603F/g.

The purpose of this paper is to investigate quality control and supply chain management practice in the case company (Wossi Garment Factory) and apply the statistical quality control tools to solve the process and product quality problems in shirt manufacturing and increase the competitiveness of the company. The case study was done using both qualitative and quantitative approaches which could be said mixed approach. First of all, data collection has been conducted by actual presence in the case company. The data were collected using the check sheet. The team has collected the two months data from the case company. After adequate statistical data was collected, the team had used Microsoft excel and excel add on software to analyze the data using statistical quality control tools. The level of quality expectation of the products within the international customers are high, however the case company, the quality control system is not as strong as it is supposed to be. The company is not using statistical quality control tools except check sheet. Because of this, there is significant amount of rejection of products and has resulted on low economic benefit. The products with defects do not qualify for international market rather whenever there is defect on product; it is pushed to local market which has impact on supply chain performance generally. The case study has shown that, the quality of shirt could be improved to the extent of making the defect zero if the statistical quality control tools are applied properly. The case study team has shown the methodology and the sequence of the application of the statistical quality control tools and basically systematic application of DMAIC following with check sheet, process flow diagram, fishbone, Pareto Chart, histogram, control limits and process capability enhancement could bring significant quality improvement in the case company. This paper showed the direct relationship of statistical quality control tools application and supply chain management. Mathematical modeling of impact of quality control over the supply chain performance and cost benefit analysis has been used as major methodology and result discussions and conclusions are drown and recommendation is also forwarded.

The aim of this research is to investigate the shrinkage properties of cotton polyester spandex denim fabrics of different fiber content. Cotton fabrics with spandex have a tendency to shrink when it comes in contact of water. Cotton spandex shrinks more when it comes in contact of hot water. Cotton is swelled up in water; thereby increase the width of fibers, as a result there is the decrease of length. If the cotton composition with spandex increases, the shrinkage properties of fabrics also increase. The higher the percentage of spandex content in a fabric is, the higher the values of shrinkage are. On the other hand, polyester does not shrink when it comes in contact of water, as manmade polyester fibers do not swell up in water. Three nomenclature of cotton poly spandex denim fabrics of different composition were used in this research and to do the required tests. Finished fabrics were collected from fabric mill to do the required tests in AATCC Test Method 135. This experiment proved that, the properties of shrinkage depends on the composition of cotton, polyester and spandex and it created a suitable way for the scholars to further study in this field.