Classification Of Polymers Presentation
| Introduction to Classification of Polymers | ||
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| • Polymers are large molecules composed of repeating subunits called monomers. | ||
| • Polymers can be classified based on their structure, properties, and synthesis. | ||
| • Classification of polymers helps in understanding their behavior and applications. | ||
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| Classification based on Structure | ||
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| • Polymers can be classified as linear, branched, or cross-linked based on their molecular structure. | ||
| • Linear polymers have a straight chain structure with no branches. | ||
| • Branched polymers have side chains branching off from the main chain. | ||
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| Classification based on Polymerization Mechanism | ||
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| • Polymers can be classified as addition or condensation polymers based on their polymerization mechanism. | ||
| • Addition polymers are formed by the addition of monomers without the elimination of any by-products. | ||
| • Condensation polymers are formed by the elimination of small molecules, such as water or alcohol, during polymerization. | ||
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| Classification based on Polymer Composition | ||
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| • Polymers can be classified as homopolymers or copolymers based on their composition. | ||
| • Homopolymers are composed of a single monomer unit. | ||
| • Copolymers are composed of two or more different monomer units. | ||
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| Classification based on Thermodynamic Behavior | ||
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| • Polymers can be classified as amorphous or crystalline based on their thermodynamic behavior. | ||
| • Amorphous polymers have a random molecular arrangement and lack long-range order. | ||
| • Crystalline polymers have a regular and ordered molecular arrangement, resulting in a higher degree of stiffness and strength. | ||
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| Classification based on Polymer Origin | ||
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| • Polymers can be classified as natural or synthetic based on their origin. | ||
| • Natural polymers are derived from natural sources, such as plants, animals, or microorganisms. | ||
| • Synthetic polymers are synthesized through chemical reactions in the laboratory or industry. | ||
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| Classification based on Polymer Properties | ||
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| • Polymers can be classified based on their mechanical, thermal, electrical, and chemical properties. | ||
| • Mechanical properties include tensile strength, flexibility, and elasticity. | ||
| • Thermal properties include melting point, glass transition temperature, and thermal stability. | ||
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| Examples of Common Polymers | ||
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| • Polyethylene (PE) is a linear polymer with excellent chemical resistance and low cost, commonly used for packaging materials. | ||
| • Polypropylene (PP) is a linear polymer with high stiffness and heat resistance, used in various applications including automotive and consumer goods. | ||
| • Polyvinyl chloride (PVC) is a vinyl-based polymer with good chemical resistance and electrical insulation properties, used in pipes, cables, and flooring. | ||
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| Applications of Polymers | ||
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| • Polymers find applications in various industries, including packaging, automotive, electronics, textiles, construction, and healthcare. | ||
| • Polymer-based materials are used for manufacturing plastic products, films, fibers, coatings, adhesives, and composites. | ||
| • Polymers play a vital role in medical devices, drug delivery systems, tissue engineering, and implant materials. | ||
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| Conclusion | ||
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| • Classification of polymers provides a systematic way to understand their structure, properties, and applications. | ||
| • Different classification criteria help in categorizing polymers based on their molecular structure, composition, behavior, and origin. | ||
| • The diverse range of polymers and their unique properties make them essential in a wide range of industries and applications. | ||
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| References (download PPTX file for details) | ||
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| • Callister, W. D., & Rethwisch, D. G. (2018). ... | ||
| • Ebnesajjad, S. (2017). Handbook of Polymer Ap... | ||
| • Rudin, A. (2002). The Elements of Polymer Sci... | ||
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