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What is Volume Expansion in Polymerizations about?

This document discusses volume expansion polymerizations, where some polymers expand in volume rather than shrink when they polymerize. This is counterintuitive, as solids are usually denser than liquids. The document explores monomers like spiro ortho esters and spiro ortho carbonates that have been shown to potentially expand slightly (0.1-0.5%) during polymerization, as measured by dilatometry. A proposed explanation is that for double ring-opening polymerizations, two covalent bonds are broken for each

Author

Deva Raj

Language

EN