Question

Titanium Oxide and Geranium Oxide are added in dope solution before spinning of the manufactured fibers as:

• A. Delusterant
• B. Moderant
• C. Chelating Agent
• D. Oxidising Agent

Hint:

Remember: TiO\textsubscript{2} = delusterant, reduces unnatural fiber shine.

Answer 1

The Correct Option is A

Step 1: Purpose of adding TiO\textsubscript{2.}
Synthetic fibers like polyester, nylon, and acrylic are naturally shiny and lustrous.
To reduce this unnatural shine, a delusterant is added. Titanium dioxide (TiO\textsubscript{2}) and geranium oxide are the most commonly used delusterants.
Step 2: Role of delusterants.
These oxides create minute particles within the fiber structure which scatter light.
This reduces brightness and gives the fiber a more natural, cotton-like dull appearance.
Step 3: Option analysis.
- (A) Delusterant: Correct, TiO\textsubscript{2} and geranium oxide are delusterants.
- (B) Moderant: Wrong, this term is not used in fiber production.
- (C) Chelating Agent: Wrong, these are used to bind metal ions in water treatment.
- (D) Oxidising Agent: Wrong, no oxidation role here.
Step 4: Conclusion.
Hence, Titanium oxide and geranium oxide act as delusterants in fiber spinning.