Nylon-6,6 is

Options

A. polyamide heteropolymer
B. Polyester heteropolymer
C. polyester homopolymer
D. polymide homopolymer

Answer

**Step-by-Step Solution for the Question: "Nylon-6,6 is..."**

1. **Identify the Type of Polymer:**
- Nylon-6,6 is classified as a polyamide. Polyamide refers to a type of polymer that contains a large number of amide bonds (-CO-NH-).

2. **Understand the Structure of Nylon-6,6:**
- Nylon-6,6 is formed from two different monomers: adipic acid and hexamethylene diamine.
- The chemical structure of adipic acid is HOOC-(CH2)4-COOH, and hexamethylene diamine is H2N-(CH2)6-NH2.

3. **Polymerization Reaction:**
- The polymerization process involves the reaction between the carboxyl group (-COOH) of adipic acid and the amine group (-NH2) of hexamethylene diamine.
- During this reaction, a water molecule is eliminated, resulting in the formation of an amide bond.

4. **Determine the Type of Bonds:**
- The presence of amide bonds indicates that Nylon-6,6 is a polyamide polymer.
- In contrast, if it contained ester bonds, it would be classified as a polyester.

5. **Classify the Polymer as Heteropolymer or Homopolymer:**
- A heteropolymer is formed from two or more different types of monomers, while a homopolymer is formed from identical monomers.
- Since Nylon-6,6 is made from two different monomers (adipic acid and hexamethylene diamine), it is classified as a heteropolymer.

6. **Final Classification:**
- Based on the above analysis, Nylon-6,6 is a polyamide heteropolymer.

**Conclusion:**
Nylon-6,6 is a polyamide heteropolymer.

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