'Super paper:' New nanopaper more break-resistant than cast iron
June 9th, 2008
Scientists report development of cellulose nanopaper, a superstrong material that could be used in the construction industry. Above is a cross-section of a fracture surface of a cellulose nanofibril film. Credit: Courtesy of American Chemical Society
Researchers in Sweden and Japan report development of a new type of paper that resists breaking when pulled almost as well as cast iron. The new material, called "cellulose nanopaper," is made of sub-microscopic particles of cellulose and may open the way for expanded use of paper as a construction material and in other applications, they suggest. Their study is scheduled for the June 9 issue of ACS' Biomacromolecules.
In the new study, Lars A. Berglund and colleagues note that cellulose — a tough, widely available substance obtained from plants — has potential as a strong, lightweight ingredient in composites and other materials in a wide range of products.
Although cellulose-based composites have high strength, existing materials are brittle and snap easily when pulled.
The study described a solution to this problem. It involves exposing wood pulp to certain chemicals to produce cellulose nanopaper. Their study found that its tensile strength — a material's ability to resist pull before snapping — exceeded that of cast iron.
They also were able to adjust the paper's strength by changing its internal structure.
Source: ACS
Apr 22, 2009 |
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it almost sounds like such a simple technique that an alchemist could have simply found it many hudnreds of years ago and been forgotten. go chemists!
Doesn't vulvox send e-mails asking if you want to 'UPpGRADE yOu're P3n1s'?