Which is not the biodegradable polymer?

Options

A. Nylon-2-Nylon-6
B. Poly (Glycolic acid) and Poly (Lactic acid)
C. Glyptal
D. PHBV

Answer

To determine which polymer is not biodegradable, we need to analyze the properties of various polymers and their ability to decompose in the environment.

### Step-by-Step Solution:

1. **Understand Biodegradability**:
- Biodegradable polymers are those that can be broken down by microorganisms into natural substances like water, carbon dioxide, and biomass. This property is important for reducing environmental pollution.

2. **Identify Examples of Biodegradable Polymers**:
- **PHBV (Poly-beta hydroxybutyrate co-beta hydroxyvalerate)**: This is a synthetic polymer that is biodegradable.
- **Nylon 2 and Nylon 6**: These are also considered biodegradable.
- **Polyglycolic Acid (PGA) and Polylactic Acid (PLA)**: These are derived from glycolic acid and lactic acid, respectively, and are biodegradable.

3. **Identify Non-Biodegradable Polymers**:
- **Glyptal**: This polymer is formed from the reaction of ethylene glycol and phthalic acid. It is known for its durability and resistance to degradation, making it non-biodegradable.

4. **Conclusion**:
- Among the options provided, Glyptal is the polymer that is not biodegradable. Therefore, the correct answer is Glyptal.

### Final Answer:
**Glyptal is not a biodegradable polymer.**

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