Remarkably improved toughness of isotactic polypropylene realized by introducing star-shaped SEBS and annealing treatment

Liu, Jingru; Guo, D. Y.

doi:10.1007/s00289-022-04208-z

Cited by 6 publications

(2 citation statements)

References 72 publications

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“…[9][10][11] The toughening process increases the ability of a plastic to dissipate deformational energy when mechanically stressed before rupture. 12,13 This process makes it easier to select a polymeric material meeting the demands of engineering applications, especially when a super-tough plastic is desired. 14 In light of this, polyamide 6 (PA6)-based polymer blends have been attracting wide attention, as they have the potential for high-performance applications in the automotive sector.…”

Section: Introductionmentioning

confidence: 99%

“…Interest in developing polymer blends that tailor the impact strength of semicrystalline thermoplastics for toughening purposes has grown 9–11 . The toughening process increases the ability of a plastic to dissipate deformational energy when mechanically stressed before rupture 12,13 . This process makes it easier to select a polymeric material meeting the demands of engineering applications, especially when a super‐tough plastic is desired 14 .…”

Section: Introductionmentioning

confidence: 99%

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

Silva

Luna

Filho

et al. 2023

J of Applied Polymer Sci

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High‐performance blends based on polyamide 6 (PA6) were prepared using a hybrid mixture of acrylonitrile/EPDM/styrene (AES) and maleic anhydride grafted ethylene–propylene–diene (EPDM‐MA). Samples were processed in a twin‐screw extruder and injection molded. The torque curves of the PA6/AES/EPDM‐MA blends shifted to higher torque values with added EPDM‐MA, suggesting a chemical interaction between the components. The melt flow index (MFI) results for the PA6/AES/EPDM‐MA blends confirmed the intensification of the flow resistance. Intense infrared absorption peaks for NH and CO indicated that the amine groups of PA6 reacted with the maleic anhydride in EPDM‐MA. The 60/25/15 wt% PA6/AES/EPDM‐MA blend showed an impact strength over 800 J/m, heat deflection temperature (HDT) of 62.3°C, elongation at break of 115%, and contact angle of 59.1°, corresponding to increases of 1718%, 10.5%, 297%, and 10%, respectively, compared to neat PA6. When examined by scanning electron microscopy, the morphology showed a fracture surface with a high degree of plastic deformation and the formation of elastic microfibrils, contributing to the super toughening of the PA6/AES/EPDM‐MA (15%) system. These results indicate the technological potential of the PA6/AES/EPDM‐MA (15 wt%) blends for application in industrial sectors that require super‐tough plastics.

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