1. Carey Wang & Crystal Cheng Block A
Nylon
Carey Wang & Crystal Cheng
Block A

2. Structural Diagram

3. History
The invention of nylon at E.I. duPont de Nemours, Inc. in 1934 began the explosion of completely synthetic materials that imitate natural materials into the fabric market. Nylon was created entirely from petrochemicals, unlike the previous artificial fabrics rayon and acetate, which were plant-based. Wallace Hume Carothers generally receives recognition for the invention, but another DuPont employee may have been the actual inventor. Julian Hill worked for Carothers, and had spent much time developing a process in which a long fiber with a silky texture could be created of carbon polymers. Carothers, who probably was afflicted with a severe bipolar condition, committed suicide in 1937, and the company credited the invention of nylon to him. Carothers had previously created neoprene, a synthetic rubber.
Wallace Hume Carothers
Julian Hill

4. How is Nylon Made
Nylon is made through a complex two-step chemical and manufacturing process that first creates the fiber’s strong polymers, then binds them together to create a durable fiber. The term is commonly used to refer to a broad range of polyamides, or synthetic polymers, and encompasses a range of often very different products. Clothing, rope, hard plastic mechanical parts, parachute coverings, and tires are all examples of the synthetic material in action. In most cases the manufacturing process is different for these different items, but the chemical part of their creation tends to be very similar.

5. Chemical Process of Nylon 66

6. Properties
Its properties are determined by the R and R‘ groups in the monomers. In nylon 6,6, R’ = 6C and R = 4C alkanes, but one also has to include the two carboxyl carbons in the diacid to get the number it donates to the chain.

7. A.K.A.Polyamides, PA

8. The majority of nylons tend to be semi-crystalline and are generally very tough materials with good thermal and chemical resistance. The different types give a wide range of properties with specific gravity, melting point and moisture content tending to reduce as the nylon number increases. Nylons can be used in high temperature environments. Heat stabilized systems allow sustained performance at temperatures up to 185oC.

9. Properties

10. Impact in Society
· WWII- The strength of Nylon really revolutionized the clothing for women especially in WWII. During the war exports of silk to the western countries were stopped;therefore, women didn’t have stockings to wear.

11. · Also it revolutionized the consumer market by providing better materials to help with consumer convenience.

12. · Nylons fixed this problem by providing reusable stockings
· Nylons fixed this problem by providing reusable stockings. It was durable and could be manufactured without importing other natural materials.

13. · Clothing made from nylon does not shrink in the dryer because the polymers are strong, durable and resist more heat than natural occurring materials such as cotton, wool, and linen.

14. · The creation of synthetic fibres such as nylon has greatly influenced our society by the things that we wear and the objects that we use that it is no wonder why our lives have become more efficient and easier as time has passed.

15. Enviornmental Concerns
In addition to being somewhat complex, the manufacturing process has also raised a number of environmental concerns. Many producers use crude oil to isolate the polymers, which can lead to the depletion of fossil fuels and environmental pollution due to runoff. The chemical production of adipic acid also frequently creates nitrous oxide, a known greenhouse gas, as a byproduct. This gas has the potential to erode the ozone layer and promote air pollution.

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