Chapter 11: A Study of Fibers and Textiles 11.3 Artificial Fibers Chapter 11: A Study of Fibers and Textiles November 30, 2014 Sanders

Homework What are the types of synthetic fibers? What are most synthetic fibers made from? What are some negative features of nylon?

Unit 5: The Study of Fibers and Textiles Vocabulary Amorphous: without a defined shape; fibers composed of a loose arrangement of polymers that are soft, elastic and absorbing. Monomer: a small molecule that may bond to other monomers to become a polymer. May 24, 2019 Unit 5: The Study of Fibers and Textiles

Unit 5: The Study of Fibers and Textiles Synthetic Fibers Fibers that are synthetic are man-made. Man-made fibers are either regenerated fibers and polymers. Rayon Acetate Nylon Acrylics Polyesters While the fibers cannot match the person to the being at the crime scene, the fibers can match the clothing to being at the crime scene. May 24, 2019 Unit 5: The Study of Fibers and Textiles

Unit 5: The Study of Fibers and Textiles Regenerated Fibers It is also known as modified natural fibers. The most common is rayon. Cellulose mixed with acetate creates a fiber used in carpets. May 24, 2019 Unit 5: The Study of Fibers and Textiles

Synthetic Polymer Fibers Synthetic fibers are petroleum based. The shape of the fiber is based on the manufacture point. Spinnerets drip out the synthetic fiber. The shape of the fiber is determined at the factory. May 24, 2019 Unit 5: The Study of Fibers and Textiles

Unit 5: The Study of Fibers and Textiles Polyester Common synthetic fiber. It is a large group of synthetic fibers made from similar chemical make up. Polar fleece Wrinkle resistant pants Added to natural fibers for strength May 24, 2019 Unit 5: The Study of Fibers and Textiles

Unit 5: The Study of Fibers and Textiles Nylon Nylon is easily broken down by light or acid. Nylon introduced as artificial silk. May 24, 2019 Unit 5: The Study of Fibers and Textiles

Unit 5: The Study of Fibers and Textiles Acrylic Acrylic is lightweight, soft, and warm, with a wool- like feel. It can also be made to mimic other fibers, such as cotton, when spun on short staple equipment. May 24, 2019 Unit 5: The Study of Fibers and Textiles

Unit 5: The Study of Fibers and Textiles Olefins It is used in wallpaper, ropes, and vehicle interiors. Olefin is Strong Colorfast Comfortable It is resistant to Staining Mildew Abrasion sunlight It is a good bulk and cover. May 24, 2019 Unit 5: The Study of Fibers and Textiles

Unit 5: The Study of Fibers and Textiles Fibers are spun into yarns. Yarns are woven into textiles. Woven fabrics have been found 6000 years old. The image on the right is cloth used to wrap a mummy somewhere from 664 - 323 BC. woven linen mummy wrapping Ancient Egypt. Late Period, c. 664-323 BC. Nice piece of woven linen mummy wrapping. 20 mm (3/4"). Very nicely preserved! ex-Henk Huffener collection, UK, acquired in the late 19th century. May 24, 2019 Unit 5: The Study of Fibers and Textiles

Unit 5: The Study of Fibers and Textiles Weaving Weaving is the intertwining of fibers into a fabric. The lengthwise fiber is called the warp. The crosswise fabric is called the weft. May 24, 2019 Unit 5: The Study of Fibers and Textiles