PVC is:

Options

A. thermoplastic polymer
B. compound polymer
C. thermosetting polymer
D. simple polymer

Explanation

**Step-by-Step Solution:**

1. **Identify the Type of Polymer:**
PVC stands for Polyvinyl Chloride. It is essential to determine the type of polymer it belongs to.

2. **Understanding Polymer Types:**
- **Thermoplastic Polymers:** These are polymers that can be melted and reshaped multiple times. They have linear or slightly branched structures, allowing them to soften upon heating.
- **Thermosetting Polymers:** These polymers, once set into a given shape, cannot be remolded or reshaped upon heating. They undergo a chemical change that creates a rigid structure.
- **Simple and Compound Polymers:** These terms are not standard classifications in polymer chemistry.

3. **Analyzing PVC Structure:**
PVC is formed from the polymerization of vinyl chloride. The structure of PVC consists of long chains of repeating units derived from the vinyl chloride monomer. The polymerization process involves breaking the double bond (pi bond) in vinyl chloride, allowing the carbon atoms to bond with adjacent monomer units, forming a linear chain.

4. **Properties of PVC:**
- PVC is characterized as a thermoplastic polymer because it can be reheated and reshaped without undergoing any chemical change.
- It does not exhibit cross-linking, which is a characteristic of thermosetting polymers.

5. **Conclusion:**
Based on the above analysis, PVC is classified as a **thermoplastic polymer**. It can be molded and remolded upon heating, making it suitable for various applications such as drainage pipes, blood storage bags, and wire insulation.

**Final Answer:**
PVC is a thermoplastic polymer.

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