Cover Image, Volume 127, Issue 2


original image

As presented by Y. Altun, M. Doğan, and E. Bayramli on page 1010, the cover shows a scanning electron microscopy (SEM) image of a freeze-fractured surface of wood flour (WF) and low density polyethylene (LDPE) composite where WF is pre-impregnated with the compatibilizer glycidyl methacrylate (GMA). WF is partially wetted by LDPE, and small gaps are observed at the interface in accordance with the poor performance of GMA as a compatibilizer. On the other hand, in Figure 4 in the article, one can observe the improved wetting and adhesion obtained by the use of maleic anhydride (MA) containing compatibilizer. The cavities observed on the surface of GMA treated WF do not exist to the same extent in the MA treated composite surface. The qualitative results obtained by SEM are further elaborated by mechanical, FTIR, and water uptake studies given in the text.