Nanotechnology to help improve quality of paper, packaging materials
Sydney: Researchers are taking the help of nanotechnology to improve paper and packaging materials at low cost. Their finding, which involves the addition of a simple step to the paper making process, makes possible the development of new magnetic, electrically conducive or optically active specialist paper products. Doctoral student Aaron Small and supervisor Jim Johnston, professor at Victoria University, investigated cost-effective methods of printing or coating nanoparticles onto paper and packaging materials. Nanoparticles are tiny particles 10,000 times thinner than the average human hair. While nanoparticles are already used to coat materials such as fabric or clay particles, this is the first time the technology has been used with a New Zealand-grown and produced material such as 'kraft board fibres' (Pinus radiata), which are exported as newsprint grade paper internationally. "We know how to print nanoparticles that glow under ultra violet light but are invisible ...