Paper by Shaswat Mohanty, Jose Blanchet, Zhigang Suo, and Wei Cai: the strength of polymer elastomeric networks
Elastomers are among the most familiar and most deceptive solids. They stretch enormously, recover their shape, and appear forgiving in a way that glass or ceramic never would. Yet they are held together by covalent bonds whose intrinsic strength is measured in GPa. The macroscopic strength of rubber-like networks, however, is usually only in the MPa range. How does a material made of very strong bonds become so weak?