Influence of biodiesel sorption on temperature-dependent impact properties of polyethylene

Plasticizing effect of oxidized biodiesel on polyethylene observed by nondestructive method

“…Most of the biodiesel compatibility studies on polymers other than polyethylene have focused on elastomers, which reported swelling with a corresponding decline in mechanical properties [2,3]. A few recent studies on polyethylene [4][5][6][7][8][9][10][11] have suggested interactions with biodiesel may be quite aggressive.…”

Experimental Investigation of the Failure Behaviour of Polypropylene Compounds for Instrumented Puncture Tests

“…The corresponding puncture energy E p is obtained by integrating the force up to the deflection at puncture s p . The transition from elastic to elastic-plastic material behaviour was described with the introduction of a yield equivalent point (s y /F y ) [5,6]. The initial slope k lin (corresponding to the relative stiffness [3]) of the curve can be approximated through the specification of another characteristic data point (s y0 /F y0 ), which is necessary to avoid deviations caused by discontinuities at the start of impact.…”

Environmental stress cracking of polyethylene high density (PE‐HD) induced by liquid media – Validation and verification of the full‐notch creep test (FNCT)

“…A possible reason can be found in the sorption behavior of the polyethylene, high density materials being exposed to the sorbing media diesel and biodiesel, Figure 5. As in earlier investigations for sorption / desorption experiments in diesel or biodiesel, a temperature of 60 8C was adopted in order to accelerate these diffusion-controlled processes as much as possible in a temperature range of practical relevance, Figure 5 [12][13][14]. The absorption of diesel is faster and the final equilibrium concentration is distinctly higher compared to biodiesel, Figure 5 [15].…”