• Corpus ID: 56071725

Borosilicones and viscoelastic silicone rubbers: network liquids and network solids

  title={Borosilicones and viscoelastic silicone rubbers: network liquids and network solids},
  author={Louis A. Bloomfield},
  journal={arXiv: Soft Condensed Matter},
  • L. Bloomfield
  • Published 28 January 2018
  • Physics
  • arXiv: Soft Condensed Matter
Borosilicones (e.g., Silly Putty) have been known for 70 years, but their peculiar behaviors have remain unexplained. In this work, experiment and theory are used to show that they are network liquids---dynamic macromolecules that appear elastic on short timescales but exhibit flow on longer timescales. Each borosilicone is a vast covalent network of silicone polymer chains joined by trifunctional boron crosslinks. At any instant, the borosilicone is a highly-crosslinked elastic material… 


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