Chapter 22, Problem 7Q

Chapter
Section
Textbook Problem

# A polypeptide is also called a polyamide. Nylon is also an example of a polyamide. What is a polyamide? Consider a polyhydrocarbon, a polyester, and a polyamide. Assuming average chain lengths are equal, which polymer would you expect to make the strongest fibers and which polymer would you expect to make the weakest fibers? Explain.

Interpretation Introduction

Interpretation: A polyamide is to be defined. Assuming average chain length of polyhydrocarbon, polyester and a polyamide to be equal, the polymer among them making the strongest fiber and the one making weakest fiber is to be stated.

Concept introduction: Polyamide is a polymer made by the linkage of an amine group of one molecule and a carboxylic group of another molecule. Polypeptide is formed when many amino acids are joined together. A polypeptide is also called a polyamide.

Explanation

Explanation

To determine: The definition of polyamide, the polymer that will make strongest fiber and the one that will weakest fiber.

Polyamide is a polymer made up of long, multiple-unit molecules in which the repeating units are held together by amide groups. The amide group is formed by the interaction of NH3 group and COOH group

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