Synethetic human hair wigs are made from a copolymer of vinyl chloride and acrylintrile ,which is called:

Options

A. `PVC`
B. Polyacrylonitrile
C. Cellulose
D. Dynel

Answer

To solve the question regarding the synthetic human hair wigs made from a copolymer of vinyl chloride and acrylonitrile, we will follow these steps:

### Step-by-Step Solution:

1. **Understanding Copolymers**:
- A copolymer is a polymer that is made from two or more different types of monomer units. In this case, we are dealing with vinyl chloride and acrylonitrile.

2. **Identifying the Options**:
- We need to analyze the given options to determine which one corresponds to a copolymer of vinyl chloride and acrylonitrile.

3. **Analyzing Option 1 - PVC (Polyvinyl Chloride)**:
- PVC is made from the monomer vinyl chloride only. Therefore, it is a homopolymer, not a copolymer. This option is incorrect.

4. **Analyzing Option 2 - Polyacrylonitrile**:
- Polyacrylonitrile is made from the monomer acrylonitrile only. Thus, it is also a homopolymer. This option is incorrect.

5. **Analyzing Option 3 - Cellulose**:
- Cellulose is a polymer made from glucose units, which is unrelated to vinyl chloride or acrylonitrile. Hence, this option is incorrect.

6. **Analyzing Option 4 - Dienyl**:
- Dienyl is a copolymer that is specifically composed of both vinyl chloride and acrylonitrile. This matches the description given in the question, making this option correct.

7. **Conclusion**:
- The copolymer of vinyl chloride and acrylonitrile used in synthetic human hair wigs is called Dienyl.

### Final Answer:
The copolymer of vinyl chloride and acrylonitrile used in synthetic human hair wigs is called **Dienyl**.

---