Monday, February 7, 2022

2DPA-1 - a two-dimensional polymer - light as plastic - stronger than steel

 Revolutionary material stronger than steel yet as light as plastic developed by MIT scientists

https://www.studyfinds.org/material-stronger-than-steel-light-as-plastic-mit/

  • "a two-dimensional polymer that self-assembles into sheets, unlike all other polymers, which form one-dimensional, spaghetti-like chains."
  • " as light as plastic — but stronger than steel"
  • "six times more difficult to break than bulletproof glass
  • "...a new polymerization process that allows them to generate a two-dimensional sheet called a polyaramide."
  • "For the monomer building blocks, they use a compound called melamine, which contains a ring of carbon and nitrogen atoms. Under the right conditions, the monomers can grow in two dimensions, forming discs...these discs stack on top of each other, held together by hydrogen bonds between the layers, which make the structure very stable and strong."
  • "Because the material self-assembles in solution...it can be made in large quantities by simply increasing the quantity of the starting materials."
  • "...the new material’s elastic modulus – a measure of how much force it takes to deform a material – is between four and six times greater than that of bulletproof glass. They also claim that its yield strength – how much force it takes to break the material – is twice that of steel, even though the material has only about one-sixth the density of steel."

 

 

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