In nylon, intermolecular forces of attraction are hydrogen bonding / dipole interactions.

Explanation

### Step-by-Step Solution:

1. **Identify the Type of Polymer**:
- The question refers to nylon, specifically nylon 6-6. This is a type of polyamide formed from the condensation reaction of two monomers: adipic acid and hexamethylenediamine.

2. **Understand the Structure of Nylon 6-6**:
- Nylon 6-6 is formed by the reaction of hexamethylenediamine (which has two amine groups, -NH2) and adipic acid (which has two carboxylic acid groups, -COOH). The reaction leads to the formation of amide linkages (-CONH-) and the release of water molecules.

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