INT323 AY2024-25

 Well done! The comments reflect a clear understanding of the video content.  For your own records, I highly recommend that you include the link to the videos at the top of each comment so you can reference this information easily in the future. FYI, much of this information will be on the NCIDQ exam..

 Cotton and flax are Natural Cellulosic fibers. this means that it burns and smells like burning paper or wood. When it is completely burned, it turns into a fine gray ash. Wool and silk are natural protein fibers that burn and smell more like burning hair or feathers, although the smell is stronger in wool. When removed from the fire, it stops burning and is a black hollow bead that can be crushed into a black powder when burned. Rayon is an artificial cellulosic fiber that burns and smells like burning paper or wood and turns into a fine gray ash like the natural cellulosic fibers. Polyester is an artificial fiber that shrinks from the heat, melts, burns, and can also potentially drip. It smells like chemicals and is sweet. It leaves behind a hard cream or black colored bead that cannot be crushed. Nylon is also an artificial fiber that burns in the same general way polyester does but smells like celery. Acrylic is similar but sputters when it is burning and has an acrid smell. A...

Fiber Identification by Burning Video: Burning to Identify Fibers The video on fiber identification shows how burning can be used to differentiate between various fiber types, including mixed, synthetic, and natural materials. Using traits including smell, ash residue, and the way the fiber responds to flame, this method provides a quick and efficient approach to identify unknown textiles. Key Takeaways: Natural fibers, such as cotton and wool, burn quickly and leave behind a soft ash that smells like burning paper or hair. Natural fibers are frequently utilized in eco-friendly interior design since they are biodegradable. Synthetic fibers, such as polyester and nylon, have a tendency to melt instead of burn, resulting in hard beads and an unpleasant chemical smell. It's critical to recognize that these fibers are synthetic while thinking about environmentally acceptable substitutes. Blended Fibers: Burning can be used to determine which fiber mix component is predominant. When det...

Fiber Identification by Burning Natural fibers like cotton, flax, wool, and silk burn but do not melt. Cotton and flax emit a smell similar to burning paper or wood, leaving fine gray ash. Wool and silk smell like burning hair or feathers, with wool's odor being stronger. Both wool and silk leave behind a black hollow bead that can be crushed into powder. Artificial fibers show more variation. Rayon behaves like cotton and flax, burning without melting and producing fine gray ash. Polyester, nylon, acrylic, and acetate shrink from heat and melt, often emitting chemical or distinctive odors. Polyester and nylon leave hard, uncrushable beads, while acrylic and acetate produce beads that can be partially crushed. Cotton (video 3) "The Story of Cotton" explains the journey of cotton from plant to fabric. It starts with cotton farming, where seeds are planted, and the crop is grown in warm climates. Once the cotton bolls are harvested, the fibers are separated from the seeds t...

Last week’s blog we learned about the different types of weaves and knits and started going into the different fibers that are used to make fabrics. As a review of last week, I will restate the different ways in which these fibers react to fire , then go into how cotton comes from the field all the way into being made into fabric, and how cotton is processed in factories.   Fire ( https://www.youtube.com/watch?v=e2RyE7i0sCk )   Fibers in fabrics can be identified by burning.   Cotton and Flax - natural cellulosic fibers, burn but do not melt, smell like burning wood or paper, and have a fine gray ash residue.   Wool and silk - natural protein fiber, burn but do not melt, smell strongly of burning hair or feathers, stops burning when it is removed from fire, and residues are like black hollow beads that can be crushed to black powder. Silk does not have as strong an odor because it does not contain Sulphur .   Rayon - has the same reactions as natur...