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Polymer Chemistry Understanding Radical Polymerization
>> YOUR LINK HERE: ___ http://youtube.com/watch?v=XlLyPQYoQkA
Hey everyone in today's video we start discussing polymer chemistry, specifically radical polymerization. At the time of filming this video, there was a massive thunderstorm going on outside, so excuse the loud booms in the background. • Below is a write up of the content covered in this video: • What is Radical Polymerization? • Radical polymerization is one of the fundamental methods for synthesizing polymers. It involves the formation of polymer chains through the reaction of monomers containing double bonds, known as vinyl monomers. These monomers undergo a chain reaction initiated by free radicals to form long chains of repeating units, called polymers. • Mechanism of Radical Polymerization: • 1. Initiation: • The process begins with the initiation step, where free radicals are generated. This can be achieved through various initiation methods such as thermal initiation, photoinitiation, or initiation by chemical initiators. In thermal initiation, for example, heat breaks a chemical bond in a molecule to generate free radicals. In photoinitiation, light energy initiates the formation of radicals from a photoinitiator molecule. Chemical initiators can also be used to generate radicals through specific chemical reactions. • 2. Propagation: • Once initiated, the free radicals react with monomer molecules, typically vinyl monomers, by adding to the double bond. This reaction creates a new radical on the monomer, allowing it to react with another monomer molecule, propagating the chain. As the chain grows, more monomers are consumed, and the polymer chain length increases. • 3. Termination: • The chain propagation continues until termination occurs. Termination can happen in several ways: • Combination termination: Two radicals combine to form a non-radical product, terminating the chain. • Disproportionation termination: Two radicals react, with one losing its radical character, forming a radical and a non-radical product. • Chain transfer termination: A radical transfers to another molecule, forming a non-radical product and a new radical, which can initiate a new chain. • Timestamps • 00:00 Introduction • 00:39 Steps of Radical Polymerization • 02:50 Radical Polymerization Mechanism • 04:40 Conclusion • (Ignore) Tags: Organic Chemistry Chemistry Tutorial Chemical Mechanism Chemistry Education Bioman Explains Learning Center Academic Tutor Science Education BCE Department Chemistry Review Educational Video Sharjah Uni AmericanUniversityofSharjah Chemistry Students StudyAid Chemistry Explained Abdelhamid Khodja Organic ChemistryII Chemistry Community Abdelhamid Khodja Bioman Abdelhamid Bioman Khodja
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