Chapter_8

Chapter_8 - Chapter 8 Polyester * * * * Wallace H....

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Chapter 8 – Polyester * Wallace H. Carothers * First to experiment with polyester (Dupont decided to manufacture Nylon first) in the 1950s * Invented nylon * English Researchers * 1 st manufactured * Imperial Chemical Industries * DuPont * Bought English patent * 1 st manufactured in U.S. Polyester * A manufactured fiber in which the fiber-forming substance is any long-chain synthetic polymer composed of at least 85% of an ester of an aromatic carboxylic acid *No need to memorize* Manufacture * Made from Petroleum *Not as strong as Nylon* * Condensation Polymerization * PET - Polyethylene terephthalate * *Major polyester manufactured and used – PET* * Reasonably priced – melt spun Other Polyester Fibers * PTT – 1990’S * Polytrimethylene terephthalate * Shell chemical company
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* PBT * Polybutylene terephthalate * PEN * Polyethylene naphthalene * Stiffer than PET & higher melting point Other Polyester Fibers * PLA * Polylactic acid * Naturally occurring sugars - CORN * Aliphatic – NO aromatic rings * Natural Biodegradable Manufacturing Staple Polyester * Spinning & Drawing * Melt spun (just like Nylon) * Staple fibers * Sets of filaments combined * Heated, drawn & relaxed
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Chapter_8 - Chapter 8 Polyester * * * * Wallace H....

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