Which of the two is a copolymer PVC or PHBV?

Explanation

To determine which of the two, PVC or PHBV, is a copolymer, we need to analyze the structure and composition of each polymer.

### Step-by-Step Solution:

1. **Define PVC**:
- PVC stands for Polyvinyl Chloride. It is a polymer made from the monomer vinyl chloride.
- The chemical structure of PVC is derived solely from vinyl chloride, meaning it has only one type of monomer.

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