Polymer encapsulation of glass filler in ternary PP/PA‐6/glass blends

Abstract

The morphology and rheology of ternary isotactic polypropylene (PP)/polyamide‐6 (PA‐6)/glass blends is investigated and contrasted with the behavior of two‐component (binary) PP/PA‐6 blends. Injection molded samples of binary blends exhibit an interlayer slip morphology for both PP and PA‐6 as the matrix and the blend shear viscosity is lower than expected from a rule of mixtures. The morphology of ternary blends is dependent on the choice of the matrix phase. In ternary blends with a PA‐6 matrix, the PP domains and glass fibers are separately dispersed within the matrix. In ternary blends with a PP matrix, the PA‐6 is mainly found surrounding (encapsulating) the glass fibers, and the extent of the interlayer slip morphology is reduced. Variations in glass surface treatment, blending time, and order of addition did not affect the rapid encapsulation of glass by the PA‐6. A reduction in blending temperature, below the peak PA‐6 melting temperature, hinders encapsulation.

Modification of fracture toughness of isotactic polypropylene with a combination of EPR and CaCO3 particles

“…Earlier work showed that the most important factors that can determine phase morphology is surface treatment of the rigid particles. Most previous studies have focused on the relationship between phase morphology and mechanical properties in PP-rubber-filler systems [5][6][7][8][9][10]. To our knowledge, there is no known significance effort focusing on using three and four-point bending tests to investigate the fracture mechanism of PP-CaCO 3 -EPR hybrid composites.…”

Starch‐filled ternary polymer composites. I: Dynamic mechanical properties

“…The mechanical properties of ternary polymer composites depend upon their composition and structure (8)(9)(10)(11)(12)(13)(14). Two extreme morphologies can be considered: the filler particles and the minor component are dispersed separately in the matrix, or the minor component encapsulates the filler particles.…”

Investigating the mechanical, morphological, and thermal behavior of PA‐6/SAN/MWCNT blends: Application of Taguchi experimental design

“…The increase in the crystallization temperature of the PA‐6 in the presence of MWCNT corresponds to the heterogeneous nucleation effect of the nanotubes . According to Benderly et al, the nanofiller acts as a nucleating agent for nylon‐6 provided that it is located within this phase in the blends. Thus, it is an indication of presence of nanotubes in the PA‐6 matrix.…”