The inter-particle forces between linear chains in nylon-6,6 are

Options

A. ionic bonds
B. covalent bonds
C. hydrogen bond
D. none of these

Explanation

To determine the inter-particle forces between linear chains in nylon-6,6, we can follow these steps:

### Step 1: Understand the Structure of Nylon-6,6
Nylon-6,6 is a type of polyamide formed from two monomers: adipic acid and hexamethylene diamine. It is produced through a process called condensation polymerization.

### Step 2: Identify the Monomeric Units
- **Adipic Acid**: The structure can be represented as HOOC-(CH2)4-COOH.
- **Hexamethylene Diamine**: The structure is represented as H2N-(CH2)6-NH2.

### Step 3: Formation of Nylon-6,6
When adipic acid and hexamethylene diamine react, they undergo a condensation reaction where water is eliminated, forming amide linkages. The repeating unit of nylon-6,6 can be represented as:
- -NH-(CH2)6-NH-CO-(CH2)4-CO-

### Step 4: Analyze the Inter-particle Forces
In nylon-6,6, the chains are held together by various types of intermolecular forces. The most significant among these are hydrogen bonds. These occur due to the presence of nitrogen (N) and oxygen (O) atoms in the amide groups, which can form hydrogen bonds with each other.

### Step 5: Conclusion
The inter-particle forces between linear chains in nylon-6,6 are primarily hydrogen bonds.

### Final Answer
The inter-particle forces between linear chains in nylon-6,6 are hydrogen bonds.

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