Microscopic morphology, rheological behavior, and mechanical properties of polymers: Recycled acrylonitrile‐butadiene‐styrene/polybutylene terephthalate blends

Abstract

In this study, styrene‐acrylonitrile‐glycidyl methacrylate (SAG) series copolymers were specially designed for producing the recycled acrylonitrile‐butadiene‐styrene (rABS)/poly(butylene terephthalate) (PBT)/SAG blends, which were prepared through the process of continuous melt blending and batch feeding. The effects of viscosity composition, SAG chemical composition, and SAG content on the morphology, and rheological and mechanical properties of the blends have been investigated. As demonstrated by morphological observation, the variety of viscosity composition of the blends affects the size of dispersed PBT droplets. Moreover, high viscosity of rABS matrix seems to facilitate the formation of smaller dispersed phase size of blends. Various SAG chemical compositions have different stabilities on the morphology of the blends, which affects the deformation, fragmentation, and coalescence of dispersed phase droplets. In addition, a finer phase morphology can be achieved when the density distribution of epoxy group is optimal in SAG copolymer. Rheological characterization manifested that the rheological properties of the blends depends strongly on its composition and structure, while the crosslinking degree is associated with the concentration of reactive groups and extent of reaction. Thereby, the rheological behavior of the blends during processing can be controlled by changing the reactive sequence and adding the quantity of epoxy group. The test on mechanical properties verified that a recycled product with excellent performance can be obtained by altering processing methods and the blends formula, which may be further applied to the 3D printing materials required by fused deposition modeling technology. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48310.

Recycled polyethylene/polyethylene‐ethylene‐1‐octene‐maleic anhydride composite with improved mechanical properties

“…As depicted in Figure 6(a), composites with higher loading of POE‐g‐MAH present higher G' values along the whole testing frequency. With the addition of POE‐g‐MAH, the linear platform of the storage modulus has been expanded, which indicates that the interaction of the phase interface in the blend is improved 48 . This phenomenon also suggests the addition of POE‐g‐MAH improves the compatibility between the inorganic particles and matrix, which increases the stiffness of the composite material and can store more energy under the action of external force.…”

Study on the Evolution Mechanism of the Structure and Properties of ABS in Cycled Fused Deposition Molding (FDM)

“…In addition, we observed the fracture surface at a higher magnification. It is found that there are many filamentous structures on the impact surface of 0215H, which is due to the high interfacial strength of the PB phase and the SAN phase at fracture . For 0215H-1,0215H-3, and 0215H-5, many smooth holes appear on the fracture surface, circled in Figure , which is caused by the PB phase being directly pulled out from the SAN phase, and the number of holes increases with the increase of cycles of FDM.…”

“…It is found that there are many filamentous structures on the impact surface of 0215H, which is due to the high interfacial strength of the PB phase and the SAN phase at fracture. 30 For 0215H-1,0215H-3, and 0215H-5, many smooth holes appear on the fracture surface, circled in Figure 6, which is caused by the PB phase being directly pulled out from the SAN phase, and the number of holes increases with the increase of cycles of FDM. This indicates that after cycled FDM, the way of fracture changes, and the interface strength of the PB phase and the SAN phase decreases significantly, and the interface strength decreases more obviously with the increase of cycles of FDM.…”

Cyclo‐olefin copolymer/poly(acrylonitrile‐butadiene‐styrene) blends: Structure–property relationships and morphological, rheological, and mechanical properties

“…On the other hand, ABS has also some drawbacks, especially for high‐performance applications, such as poor solvent, fatigue, and UV resistance, lower HDT/Vicat temperature, and impact resistance than high‐performance engineering plastics. In this context, blends of ABS with other engineering thermoplastics such as polycarbonate (PC), [ 18,19 ] polyamides (PA), [ 20,21 ] polybutylene terephthalate (PBT), [ 22,23 ] and styrene–acrylonitrile [ 24,25 ] are of significant scientific and commercial interest. In blending efforts of ABS and high‐performance engineering thermoplastics, ABS provides ease of processability and reliable notched impact resistance, [ 26,27 ] whereas other engineering thermoplastics improve mechanical, thermal and energy absorption properties.…”