Corrigendum to “Influence of water uptake on the electrical DC-conductivity of insulating LDPE/MgO nanocomposites” [Compos. Sci. Technol. 152 (2017) 11-19]

The Role of Interfaces in Polyethylene/Metal‐Oxide Nanocomposites for Ultrahigh‐Voltage Insulating Materials

“…A nanocomposite with 6 wt% octyl‐functional silsesquioxane‐coated magnesium oxide nanoparticles (C8‐MgO) contains almost 7 times more water than the pristine polyethylene. The DC conductivity for this system is approximately an order of magnitude lower when examining short term data (10 s) as compared to the particle‐free material despite the high water content . However, at a longer period of time (>2 h) the nanocomposites show no improvement in the insulating properties as compared to unfilled LDPE.…”

“…It must be stated here that in order for water to plasticize polyethylene, or any other polymer for that matter, the water content must be quite high (on the order of several percent). To conclude, the effect of water on the electrical breakdown behavior of nanocomposites is complex and needs to be explored further …”

Highly insulating thermoplastic nanocomposites based on a polyolefin ternary blend for high-voltage direct current power cables

“…However, several hypotheses have been proposed. Dispersed nanoparticles in an LDPE matrix can absorb polar molecules or ions, which act as charge carriers, 36,37 they can introduce deep trapping sites for electrons or holes located in the vicinity of the nanoparticle surface [38][39][40][41][42] and they can lead to recombination of charge carriers. 43 The 20 : 38 : 42 SEBS : PP : LDPE ternary blend displayed a conductivity of σ DC ≈ 4.3 × 10 −15 S m −1 at 70 °C and 30 kV mm −1 , which is 10-times lower than the value measured for neat LDPE (Table 1).…”