|
|||||
|
|
Wood cellulose biocomposites with fibrous structures at micro- and nanoscale |
|
| Authors: | Houssine SehaquiMaë l Allais,Qi Zhou,Lars A. Berglund |
| Affiliation: | a Department of Fibre and Polymer Technology, Royal Institute of Technology, SE-10044 Stockholm, Sweden b Ecole Nationale Supérieure d’Arts et Métiers, Esplanade des Arts et Métiers, 33405 Talence, France c School of Biotechnology, Royal Institute of Technology, AlbaNova University Centre, SE-10691 Stockholm, Sweden d Wallenberg Wood Science Center, Royal Institute of Technology, SE-10044 Stockholm, Sweden |
| Abstract: | High-strength composites from wood fiber and nanofibrillated cellulose (NFC) were prepared in a semi-automatic sheet former. The composites were characterized by tensile tests, dynamic mechanical thermal analysis, field-emission scanning electron microscopy, and porosity measurements. The tensile strength increased from 98 MPa to 160 MPa and the work to fracture was more than doubled with the addition of 10% NFC to wood fibers. A hierarchical structure was obtained in the composites in the form of a micro-scale wood fiber network and an additional NFC nanofiber network linking wood fibers and also occupying some of the micro-scale porosity. Deformation mechanisms are discussed as well as possible applications of this biocomposites concept. |
| Keywords: | Nanofibrillated cellulose (NFC) A. Fibers A. Nano composites B. Mechanical properties Scanning electron microscopy (SEM) |
| 本文献已被 ScienceDirect 等数据库收录！ | |