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Grey cotton fabrics

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  1. Abstract
  2. Chapter 1
    1. Introduction
    2. Desizing
    3. Scouring
    4. Bleaching
    5. Dyeing
  3. Chapter 2
    1. Objective of this study
  4. Chapter 3
    1. Introduction
    2. Materials
    3. Methods
    4. Testing
  5. Chapter 4
    1. Discussions and results
  6. Chapter 5
    1. Conclusions

Although the synthetic fibers have dominated the textile market, consumers still have a preference towards cotton. Today cotton can be manufactured but the natural merits obtained in cotton cultivated in different areas of the country cannot be underestimated. A number of research studies report on the chemical modification of cotton using various types of agents. In this regard, the present study considers the affect of reducing agent on the fabrics properties. The starting material was 20's single sheeting fabric producing normally in most acceptable widths. The fabric was desized, scoured, bleached before dyeing with vat dyes. During dyeing hydrose and glucose were used as reducing agent. The fabric was tested for drape coefficient, tearing strength, bending length and grease recovery from grey to dyed state using standard methods as prescribed by IS Hand book.

[...] Grey fabric are almost water repellant and will not easily take up the desizing solution. Therefore the fabric is steeped in boiling water bath before desizing, and then fabric is taken to the desizing bath. The method of desizing can be classified into: 1. Hydrolytic desizing viz. rot steeping, acid steeping and enzymatic steeping Oxidative desizing viz. treatment with chlorine, chlorite and bromite SCOURING: Even after desizing the grey fabric contain fats and waxes, these impurities are therefore removed in this scouring process. [...]

[...] The conditioning parameters are temperature and humidity Determination of geometrical properties: Thread spacing: The parameter is defined the average distance between two consecutive threads in a fabric. It is calculated as per IS: 1963-1969. Ends per inch and picks per inch are measured using densimeter. The average of many observations selected randomly is reported as the final value which is later converted to threads per inch was expressed in centimeters Yarn count: Yarn count was determined and 10 readings were taken, the average of which is English count as per IS: 1915 which is then converted to tex count using the formula: Tex = 590.5 ( 3.1 ) Fabric weight per sq. [...]

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