Decanoic acid (the shortest chain coating considered) produces the highest levels of PE crystallinity, whil e behenic acid (the longest of the 'short chain' coatings) induces levels of crystallinity lower than that in the compound containing uncoated filler.
For example, decanoic acid induces the highest levels of PE crystallinity (Fig.
5, 6), where the lower yield stress of compounds containing decanoic acid coated Mg[(OH).
1, 2) but the impact resistance of MDPE composites modified by decanoic acid coated fillers is particularly high.
The optimum coating times were determined to be 40 minutes for decanoic acid, 60 minutes for stearic acid and 70 minutes (approx.
1] wavenumbers were measured, and demonstrated a continued increase when plotted against the decanoic acid coating addition level.
There are fewer visible agglomerates for the compound containing 11% decanoic acid coated filler (Fig.
Coated fillers studied were modified by decanoic acid (6%) and by behenic acid (6% and 14%), together with control compounds containing uncoated filler and unfilled MDPE.