| Journal: | Maderas : ciencia y tecnología |
| Database: | |
| System number: | 000544766 |
| ISSN: | 0718-221X |
| Authors: | Kord, Behzad1 Malekian, Behrouz2 Yousefi, Hossein3 Najafi, Abdollah4 |
| Institutions: | 1Standard Research Institute, Faculty of Chemistry and Petrochemical Engineering, Karaj. Irán 2Islamic Azad University, Chalous. Irán 3Gorgan University of Agriculture Sciences and Natural Resources, Department of Wood Engineering and Technology, Gorgan. Irán 4Islamic Azad University, Department of Wood and Paper Science and Technology, Chalous. Irán |
| Year: | 2016 |
| Volumen: | 18 |
| Number: | 4 |
| Pages: | 743-752 |
| Country: | Chile |
| Language: | Inglés |
| English abstract | Poly (vinyl alcohol) based composite films with different loadings of cellulose nanofibrils were prepared using a solvent casting method and their tensile, optical and wettability properties were tested. The morphology of both neat poly (vinyl alcohol) and nanocomposites was explored by using a field emission scanning electron microscope technique. Results indicated that the tensile strength and Young's modulus of poly (vinyl alcohol) composite films were significantly improved with the increase of cellulose nanofibrils loading. However, the percentage of elongation at break decreased with increasing of cellulose nanofibrils. The films became increasingly opaque with increasing cellulose nanofibrils contents, although the composites also retained moderate transparency. The samples containing cellulose nanofibrils exhibited higher hydrophobicity compared with that of neat poly (vinyl alcohol). Field emission scanning electron microscope micrographs revealed that the cellulose nanofibrils were homogeneously dispersed in the poly (vinyl alcohol) matrix. |
| Keyword: | Cellulose nanofibril, Color measurement, Contact angle, Tensile properties, Transparency |
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