We appreciate your visit to Polymer science Explain what will you expect to occur in a polymerization process of Polymethyl Methacrylate if the polymerization takes place above or below 220. This page offers clear insights and highlights the essential aspects of the topic. Our goal is to provide a helpful and engaging learning experience. Explore the content and find the answers you need!
Answer :
Above 220 °C, the polymerization process of Polymethyl Methacrylate (PMMA) would be expected to proceed rapidly and result in a high degree of polymerization. Below 220 °C, the polymerization process would be expected to proceed slowly or not at all.
Polymethyl Methacrylate (PMMA) is a thermoplastic polymer that can undergo free radical polymerization. In this polymerization process, monomers of methyl methacrylate (MMA) join together to form a polymer chain. The reaction is initiated by a radical initiator, which generates free radicals that initiate the polymerization.
At temperatures above 220 °C, the rate of the polymerization reaction increases significantly. The increased temperature provides more energy to break the bonds in the initiator and monomers, leading to a higher concentration of free radicals and more frequent collisions between monomers. This results in a rapid polymerization process, producing a high molecular weight polymer with a high degree of polymerization.
Conversely, at temperatures below 220 °C, the reaction rate slows down. Insufficient thermal energy hinders the bond-breaking process, leading to fewer free radicals and fewer collisions between monomers. As a result, the polymerization proceeds slowly or may not occur at all, resulting in a low or negligible degree of polymerization.
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