Polymers and its Classifications Video Lecture | General Awareness for SSC CGL

Ans. Polymers are large molecules made up of repeating structural units known as monomers, which are covalently bonded. The process of forming polymers from monomers is called polymerization. There are two primary types of polymerization: addition polymerization, where monomers add to each other without the loss of any small molecules, and condensation polymerization, where each step of the reaction releases a small molecule, often water.

Ans. Polymers can be classified into several categories based on different criteria. The primary classifications are: 1. <b>Natural vs. Synthetic Polymers</b>: Natural polymers include materials like proteins and cellulose, while synthetic polymers include plastics like polyethylene and polystyrene. 2. <b>Thermoplastics vs. Thermosetting Plastics</b>: Thermoplastics soften upon heating and can be remolded, whereas thermosetting plastics harden permanently after being shaped. 3. <b>Addition vs. Condensation Polymers</b>: Addition polymers form by the direct addition of monomers, while condensation polymers form through the elimination of small molecules during the reaction.

Ans. The properties of polymers can vary widely based on their structure and composition. Key distinguishing properties include: 1. <b>Mechanical Strength</b>: Some polymers are flexible (like rubber), while others are rigid (like nylon). 2. <b>Thermal Stability</b>: Thermoplastics can be reshaped when heated, while thermosetting plastics maintain their shape. 3. <b>Chemical Resistance</b>: Some polymers are resistant to solvents and chemicals, making them suitable for specific applications, while others may degrade when exposed to certain substances.

Ans. Polymers play a crucial role in everyday life and are used in a wide range of applications. Common uses include: 1. <b>Packaging Materials</b>: Polymers like polyethylene and polypropylene are extensively used in packaging due to their lightweight and durable nature. 2. <b>Textiles</b>: Fibers such as polyester and nylon are used in clothing and home furnishings. 3. <b>Medical Devices</b>: Biocompatible polymers are used in medical applications, including drug delivery systems and implants.

Ans. Polymer research is vital for advancements in various fields, including materials science, biotechnology, and nanotechnology. Innovations in polymer chemistry lead to the development of new materials with tailored properties, enhancing product performance. This research contributes to sustainable practices by creating biodegradable polymers and improving recycling processes, thus addressing environmental concerns associated with plastic waste.