Which of the following type of force are present in Nylon-66?

Options

A. vasn dar Waal's forces of attraction
B. Hydrogen bonding
C. Three dimensional network of bonds
D. None of these

Answer

To determine the types of forces present in Nylon-66, we can follow these steps:

### Step 1: Understand the Composition of Nylon-66
Nylon-66 is a synthetic polymer formed from the condensation reaction between hexamethylenediamine and adipic acid.

### Step 2: Identify the Functional Groups
- **Hexamethylenediamine** has amine groups (-NH2).
- **Adipic acid** has carboxylic acid groups (-COOH).

### Step 3: Analyze the Polymerization Process
During the polymerization, a water molecule (H2O) is eliminated for each linkage formed between the amine and carboxylic acid groups. This results in the formation of amide bonds (-CONH-).

### Step 4: Determine the Types of Intermolecular Forces
In Nylon-66, the primary intermolecular forces are:
- **Hydrogen Bonds**: These occur between the hydrogen atoms of the amine groups and the oxygen atoms of the carbonyl groups (C=O) in the amide linkages. This type of bonding significantly contributes to the strength and stability of the polymer.

### Step 5: Evaluate the Options Given
1. **Van der Waals Forces**: Incorrect, as these are weak forces and not the primary interactions in Nylon-66.
2. **Hydrogen Bonding**: Correct, as discussed above.
3. **Three-dimensional Network**: Incorrect, as Nylon-66 does not form a three-dimensional network in the same sense as some other polymers.
4. **None of These**: Incorrect, since hydrogen bonding is indeed present.

### Conclusion
The type of force present in Nylon-66 is primarily **hydrogen bonding**.

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