OPTICAL BRIGHTENING AGENT (OBA): Optical brightening agents (OBA) are additives used in textile processing to enhance the brightness and whiteness of fabrics. OBAs work by absorbing ultraviolet radiation and emitting visible light, which can make fabrics appear brighter and more vibrant. OBAs are typically added to fabric finishes, such as sizing, dyeing, and printing, and are widely used in the textile industry.
Lecture Slides
| OPTICAL BRIGHTENING AGENT | Download |
| Fabric Fault | Download |
| Frictional Properties for students | Download |
| Swelling properties for student | Download |
| Thermal properties for student | Download |
| Woven Fabric Peoperties -TECN | Download |
FABRIC FAULT: Fabric faults refer to defects or imperfections in textile fabrics that can occur during the manufacturing process. Common fabric faults include broken ends, holes, snags, knots, and uneven dyeing or printing. Fabric faults can have a negative impact on fabric quality and can reduce the overall value of the finished product. Fabric faults can be minimized through quality control measures, such as inspection and testing, and through the use of advanced manufacturing techniques.
FRICTIONAL PROPERTIES: Frictional properties refer to the interaction between fabrics and other surfaces, such as machinery or other fabrics. Frictional properties are important in textile manufacturing, as they can affect the quality and performance of the finished product. For example, fabrics with high frictional properties may be more prone to pilling or abrasion, while fabrics with low frictional properties may be more prone to slipping or stretching. Frictional properties can be measured using a variety of techniques, such as the ASTM D1894 standard test method.
SWELLING PROPERTIES: Swelling properties refer to the ability of fabrics to absorb water and other liquids. Swelling properties can affect the dimensional stability, strength, and appearance of fabrics, and are an important consideration in textile manufacturing. For example, fabrics that swell too much during washing or dyeing may shrink or distort, while fabrics that do not swell enough may not absorb dyes or other finishes properly. Swelling properties can be measured using techniques such as the water absorption test, in which a fabric sample is immersed in water and the weight gain is measured over time.
Overall, understanding the properties and characteristics of textiles is essential in textile physics, as it allows for the development of new and innovative textile products and manufacturing processes. By studying factors such as optical brightening agents, fabric faults, frictional properties, and swelling properties, textile engineers and researchers can create high-quality fabrics that meet the demands of today’s consumers.
