Development of Polyamide 6/Compound by Recycled Rubber Blends Using Graphitized Polyethylene or Polypropylene with Maleic Anhydride as Compatibilizer Agent

Abstract

The toughening of polyamide 6 is desirable for many applications and may be obtained by adding a phase to the elastomeric matrix. However, this leads to a loss in its rigidity characteristics. Therefore, this study aimed at developing blends of polyamide 6/compound by recycled rubber (SBR-R), with the addition of compatibilizer graphitized polyethylene and polypropylene with maleic anhydride method by mixing in the molten state in order to obtain a balance between stiffness and toughness. The systems were prepared in several compositions, and their rheological properties and spectroscopy in the Fourier transform infrared were studied by means of rheological curves obtained in an internal mixer of Haake Buchler. The results obtained with the rheological study and Fourier transform infrared showed that mixtures of polyamide 6/graphitized polyethylene with maleic anhydride presented the best results compared to those of polyamide 6/ graphitized polypropylene with maleic anhydride, probably indicating reaction between the components. Thus, it was chosen graphitized polypropylene with maleic anhydride as a compatibilizing agent for carrying out other characterizations. Blends of polyamide 6/compound by recycled rubber/ graphitized polypropylene with maleic anhydride and their properties were analyzed by means of mechanical tests (tensile and impact), dynamic mechanical thermal analysis, differential scanning calorimetry, and scanning electron microscopy. The impact strength and elastic modulus of the blends compatibilized reduced somewhat when compared to polyamide 6. Therefore, these results indicate a good prospect of application of industrial waste, minimizing the negative effect on the environment and adding value to a disposable material.

Influence of Small Amounts of ABS and ABS-MA on PA6 Properties: Evaluation of Torque Rheometry, Mechanical, Thermomechanical, Thermal, Morphological, and Water Absorption Kinetics Characteristics

“…Figure 6 a,b shows the SEM micrographs of pure PA6, with a magnification of 500× and 2000×, respectively. As noted, the fracture surface of the pure PA6 showed a regular ductile fracture appearance, a behavior similar to that found in the literature [ 47 ].…”

Tailoring polyamide 6 to exhibit super‐tough behavior and high thermomechanical stability: The role of AES and EPDM‐MA hybridization

“…Figure 11a–g shows SEM micrographs of neat PA6, PA6/AES, and PA6/AES/EPDM‐MA blends, respectively. Neat PA6 (Figure 11a showed a ductile fracture behavior, as previously reported in the literature) 75 . The plastic deformation increased for PA6/AES blends compared to neat PA6, as shown in Figure 11b.…”

“…Neat PA6 (Figure 11a showed a ductile fracture behavior, as previously reported in the literature). 75 The plastic deformation increased for PA6/AES blends compared to neat PA6, as shown in Figure 11b. The PA6/AES blends showed a biphasic structure with AES particles of varying sizes dispersed in the PA6 matrix.…”

Electrical nanocomposites of PA6/ABS/ABS‐MA reinforced with carbon nanotubes (MWCNTf) for antistatic packaging

“…The fracture surface of PA6 (Figure 8A,B) presented a regular aspect of ductile fracture, similar to the behavior observed in the literature. [71] The PA6/ABS blend presented a biphasic structure with adjacent spherical ABS particles of varying sizes dispersed in the PA6 matrix. The many voids observed indicate that the ABS particles were pulled out of the PA6 matrix during the impact test (see Figure 8C).…”