کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
817966 | 1469429 | 2014 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Fracture toughness analysis of O-POSS/PLA composites assessed by essential work of fracture method Fracture toughness analysis of O-POSS/PLA composites assessed by essential work of fracture method](/preview/png/817966.png)
Essential work of fracture (EWF) method was employed to investigate the effect of the octavinylisobutyl based polyhedral oligomeric silsesquioxane (O-POSS) addition in poly(lactic acid) (PLA) matrix on the fracture behavior of O-POSS/PLA composites. The 2 mm thick rectangular shaped PLA-matrix composites containing various weight ratios of O-POSS were injection molded after processing in a twin-screw extruder. Constant deformation rate tensile tests at room temperature were performed on double edge notched tensile (DENT) specimens with various ligament lengths. It was found that the addition of O-POSS to PLA improved the toughness. It was observed that a greater energy consumed after the maximum load reached on load–displacement curves for the composites. Optimum additive value was obtained at 7 wt% O-POSS.
Journal: Composites Part B: Engineering - Volume 56, January 2014, Pages 527–535