Polyurethanes and Other Step-Growth Polymers

Conduct research on the Internet to find more information on nylon and synthetic fibers and to answer the following questions. 

When was the first viable synthetic fiber drawn  

Before making nylon, Carothers and his group tried to use polyesters to make commercially viable fibers. What were the problems with the first polyesters  

What advantages did polyamides have over polyesters  

Why was nylon Important to the United States during World War II  

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