A Super-Strong Paper as tough as Steel

17 July 2008

Lars Berglund, leading scientist of the Swedish Royal Institute of Technology in Stockholm has developed a super-strong paper with his research team which is nearly as tough as steel- and is feasible for use in the construction industry. He also unveiled that this nano-paper is made from gently processed natural cellulose nano-fibres.

He endorsed the fabrication of the super-strong material to a new process that helps pulp wood without damaging the properties of the natural fibres, something that prevents them from weakening. The researcher hence conveys the secret to the nanopaper's performance is not only the strength of the undamaged cellulose fibres, but also the way they are arranged into networks. Though strongly bound together, he says, the cellulose fibres are still able to slip and slide over each other to dissipate strains and stresses. Berglund also says that the individual cellulose fibres are also much smaller than in conventional paper. "A regular paper network has fibres 30 micrometres in diameter, here we are at a scale three orders of magnitude smaller. The material (has) very small defects compared with a conventional paper network," Live Science quoted him as saying.

Researchers found upon mechanical testing that their new material had a tensile strength of 214 megapascals, which made it stronger than cast iron (130 MPa), and nearly as strong as structural steel used in buildings and bridges (250 MPa).


ss_blog_claim=7d480038841d1ce8880873c0de4ab928 ss_blog_claim=7d480038841d1ce8880873c0de4ab928