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BERC POLYMAT UPV/EHU Researcher Prof. Alejandro J. Müller´s article on the cover of the Journal of Polymer Science, Part B: Polymer Physics
BERC POLYMAT Prof. Alejandro J. Müller´s article on the cover of the Journal of Polymer Science, Part B: Polymer Physics:
Nanosilica (NS) particles were found to be outstanding morphological stabilizers for immiscible PP-PA blends. They prevent coalescence regardless of the processing technique applied. Typical sea island morphologies are observed for 80/20 blends with average particle sizes close to 10 microns. NS addition creates a rigid barrier (observed by TEM) along the PP-PA interface that results in reductions of droplet sizes to values below 1 micron, as observed by SEM. While NS is an excellent morphological stabilizer, it cannot promote interfacial adhesion between immiscible PP and PA phases, as demonstrated by rheological measurements on page 1567 by Alejandro J. M€uller and coworkers.