Morphology prediction of ternary polypropylene composites containing elastomer and calcium carbonate nanoparticles filler

Abstract

In this work, the morphology was studied in ternary composites of polypropylene (PP) with nanosized calcium carbonate (nano-CaCO 3 ) fillers and elastomer inclusions and the thermodynamic consideration was used to analyze the formation of phase structure of the composites. The wetting coefficient (o a ), interfacial tension (g AB ), and work of adhesion (W AB ) were calculated to predict dispersion state of nano-CaCO 3 fillers. A comparison of the prediction and SEM analysis was given. The results show that three types of phase structures were formed: an encapsulation of the filler by elastomer, a separate dispersion of the filler and elastomer, and a particular structure of the filler at the PP/elastomer interface. The predictions by o a were all successfully supported-up by SEM analysis and the predictions by W AB were however trustless. Both g AB and W AB can predict a separate dispersion or an encapsulation phase structure, but they were not available for the particular structure of the filler at the PP/elastomer interface. o a was competent and favored for the prediction of all three types of morphology among the three parameters.

Preparation and properties of polyurethane‐coated talcum/polypropylene composite materials

“…When the talcum content was 15% and the coating coverage percentage was 25%, the maximum impact toughness of 11.60 kJ/m 2 was obtained, which was 65% higher than that of PP. This result was in accordance with the characteristics of elastomer toughening [16,17]. When the talcum powder content was higher than 20%, the result was kept to the rule that the toughness decreased with the increasing of filler loading up to a certain content [12].…”

“…Figure 5b showed the fracture surface of the composites with a talcum content of 20% and a coating coverage percentage of 0%; the uneven fracture morphology indicated that it increased the resistance to crack growth. This complex system subjected to external force could lead to more fine crazes, shear zones, consuming some impact energy to terminate cracks to a certain degree [17]. However, when the talcum powder content was more than 15%, the notched impact toughness decreased.…”

The role of SEBS in tailoring the interface between the polymer matrix and exfoliated graphene nanoplatelets in hybrid composites

“…It is reported that the mechanical properties and processing characteristics of PP were improved by blending with SEBS [14,15]. An alternate and relatively new method to improve the properties of thermoplastics is by the development of hybrid composites, which are ternary polymer composites composed of matrix, elastomer and filler [16,17].…”

Fracture resistance improvement of polypropylene by joint action of core–shell particles and nucleating agent

“…For PP, only calcium carbonate (CaCO 3 ) has been reported to be efficient in toughening PP [1][2][3][4][5][6][7]. The combination of elastomer and rigid particles to achieve so-called core-shell particles has been proved to be another way to toughen PP [8][9][10][11][12], and the ternary composites usually exhibit balanced performance. However, the toughening efficiency of such core-shell particles is still very poor.…”