Problem 125 - Advanced Problems in Organic Chemistry for Competitive Examinations

Question

Orlon is a unit of (a) vinylcyanide (b) acrolein (c) glycol (d) isoprene

Step-by-Step Solution

Answer

Orlon is a unit of vinylcyanide (a).

Step 1: Understand the Question

The question asks about Orlon and which compound it is a polymer unit of. You are given four options to choose from.

Step 2: Analyze Each Option

Let's review each option one by one: - **(a) Vinylcyanide**: Also known as acrylonitrile, this is a chemical compound that is used in the production of high-strength acrylic fibers like Orlon. - **(b) Acrolein**: This is a colorless or yellow liquid used as a biocide or a building block for other chemicals. - **(c) Glycol**: Glycol compounds are used in antifreeze and other industrial applications, not typically associated with Orlon. - **(d) Isoprene**: This is a common unit in natural rubber and other elastomers, not related to Orlon.

Step 3: Infer the Correct Answer

Based on the analysis, vinylcyanide (acrylonitrile) is the compound that Orlon is made from, as it is used to manufacture acrylic fibers which Orlon represents. The other options are unrelated to Orlon or acrylic fibers.

Key Concepts

Acrylonitrile

Acrylonitrile is a vital monomer used in the creation of polymers like acrylic fibers. It is a colorless volatile liquid, with a chemical formula of \( C_3H_3N \). Acrylonitrile is known for its strong binding properties, which make it an excellent precursor in polymer chemistry. Its primary use in industry is in the production of fibers and plastics. Here’s how it works:

• Acrylonitrile undergoes polymerization, a process where small monomers combine to form larger polymer chains.
• The resulting polymer from acrylonitrile is commonly used to produce acrylic fibers, known for their durability and resilience.
• Due to its strong molecular structure, acrylonitrile is essential in creating products that can withstand harsh conditions.

Acrylonitrile’s utility is not only limited to fibers. It also plays a role in creating plastics, adhesives, and as a component in some chemical reactions. Understanding acrylonitrile helps in grasping how materials like acrylic fibers gain their properties.

Acrylic Fibers

Acrylic fibers are a type of synthetic fiber derived from acrylonitrile. These fibers are known for their wool-like feel and great resilience, making them an ideal choice for various textile applications.

• Acrylic fibers are lightweight, providing excellent insulation. This makes them popular in clothing and home textiles like blankets and carpets.
• They are resistant to various environmental stresses such as sunlight and weather, without deteriorating quickly.
• The fibers are highly customizable, allowing them to be dyed in numerous colors, which adds to their versatility in fashion and design.

These properties make acrylic fibers a staple in the textile industry. Their ability to mimic natural wools while offering superior durability and color retention is key to their broad use globally. Understanding acrylic fibers includes recognizing their economic and practical benefits over some natural fibers.

Organic Compounds

Organic compounds, by definition, contain carbon and are a fundamental part of polymer chemistry. These compounds form the basis of life, but they also create numerous synthetic materials. Here’s why they matter:

• Organic compounds are defined by the presence of carbon atoms, typically bonded with hydrogen, oxygen, nitrogen, and other elements.
• They form large complex structures, like polymers, which are used extensively in daily life, such as in plastics, rubber, and fibers.
• The flexibility of organic compounds allows for a wide range of properties, from malleability to strength, depending on the structure and elements involved.

Acrylonitrile, being an organic compound, showcases the versatility of these chemicals in creating essential everyday products like acrylic fibers. In polymer chemistry, organic compounds like these allow us to develop materials with specific desirable properties, which are indispensable across industries.