| 초록 |
Polyethyleneterephthalate (PET) waste bottles were converted to nanofibrous aerogels for enhanced acoustic absorption and insulation. Nanofibers generated by facile electrospinning of PET sols were crosslinked with polyvinyl alcohol (PVA) to form a functional aerogel with high porosity. This highly porous media exhibits remarkable sound absorption coefficient which is at par, if not, better than the commercial sound absorbers. Additionally, with minimal thickness, it shows a relatively high sound transmission loss which is superior to previously reported sound insulators. This material also shows good mechanical stability and has an ultra-light weight. By recycling wastes plastics such as PET bottles and converting it to useful materials such as sound absorbers and insulators, this approach may partly address the worsening pollution in the world. |
