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A Comparison of the Chemical Structures and Generation Techniques of Silk and Artificial Silk Abstract Despite their apparently similar exteriors, the chemical structures and production methods of natural silk and the synthetic silks rayon and nylon are very different. Silk yarn, extracted from the cocoon of the Bombyx mori moth, is composed of fibroin molecules with beta-pleated sheet secondary structures. The fibroin molecules consist of crystalline fibers constructed of frequently paralleled, unfolded polypeptide chains of polyglycylalanine mixed with an amorphous part. Although viscose rayon was initially known as вЂњartificial silk, soвЂќ it is not a truly synthetic fiber, because it is made from wood pulp, a naturally-occurring, cellulose-based substance. Nylon, however, is a synthetic fiber. It truly is a polyamide whose molecular chains are shaped by frequently spaced вЂ"CONHвЂ" amide groups. Nylon 6-6, or poly(hexamethylneadipamide), consists of two structural monomers (hexamethylendiamine (H2N(CH2)6NH2) and adipic acid (HOOC(CH2)4COOH), whereas Nylon 6, or poly(6-caprolactam), is composed of a single structural unit (either 6-aminocaproic acid (H2N(CH2)4COOH) or caprolactam). Finally, the different chemistries and production methods of these fibers provide them certain benefits (such as viscoseвЂ™s capacity to unite with other fibers to create new fabrics readily) and pitfalls (such as nylonвЂ™s fast weakening fibers or organic silkвЂ™s problem of manufacturing) over one another that make them more or less suitable for certain purposes. Because of this, when contemplating silk and artificial silk, then it is illogical to select one fiber that is superior to the others and to focus on the creation of the specific fiber. A Compa...