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<p>This research focuses on the development of 3D printed polyethylene terephthalate glycol (PETG)/acrylonitrile butadiene styrene (ABS) blended samples to improve tensile strength and fracture toughness. ABS and PETG polymers were melt-blended in various weight ratios (ABS:PETG = 100:0, 90:10, 80:20, 70:30, 60:40, 50:50, and 40:60), followed by filament extrusion and 3D printing. The study revealed that the Shore D hardness of the blends remained consistent, indicating no significant impact from blending. However, notable improvements were observed in the tensile and SENB properties. Among the blends, 60PETG40ABS showed the highest load-bearing capacity and ultimate tensile strength (UTS), with values of 610 ± 60&#xa0;N and 34.5 ± 3.2&#xa0;MPa, respectively, reflecting increases of 14.44% and 14.24% compared to neat ABS. Additionally, compared to neat PETG, this blend demonstrated enhancements in maximum load and UTS by 30.34% and 21.05%, respectively. The 60PETG40ABS blend also exhibited superior fracture toughness, with the highest recorded values of fracture toughness (<i>K</i><sub>IC</sub>) at 3.79 ± 0.16&#xa0;MPa.m<sup>1/2</sup> and critical energy release rate (<i>G</i><sub>IC</sub>) at 0.0133 ± 0.004&#xa0;kJ/m<sup>2</sup>, representing improvements of 63.3% and 82.33% over neat PETG. These findings highlight the potential of PETG/ABS blends for producing 3D printed components with enhanced mechanical properties, making them ideal for applications requiring durability and flexibility.</p> Graphical Abstract <p></p>

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Enhanced Tensile Strength and Fracture Toughness of 3D Printed PETG/ABS Blend for Load-Bearing Application

  • 期刊论文

  • 发表日期：

    2025年4月26日

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  • Vishal Mishra,
  • Dhinakaran Veeman,
  • Sushant Negi

摘要

This research focuses on the development of 3D printed polyethylene terephthalate glycol (PETG)/acrylonitrile butadiene styrene (ABS) blended samples to improve tensile strength and fracture toughness. ABS and PETG polymers were melt-blended in various weight ratios (ABS:PETG = 100:0, 90:10, 80:20, 70:30, 60:40, 50:50, and 40:60), followed by filament extrusion and 3D printing. The study revealed that the Shore D hardness of the blends remained consistent, indicating no significant impact from blending. However, notable improvements were observed in the tensile and SENB properties. Among the blends, 60PETG40ABS showed the highest load-bearing capacity and ultimate tensile strength (UTS), with values of 610 ± 60 N and 34.5 ± 3.2 MPa, respectively, reflecting increases of 14.44% and 14.24% compared to neat ABS. Additionally, compared to neat PETG, this blend demonstrated enhancements in maximum load and UTS by 30.34% and 21.05%, respectively. The 60PETG40ABS blend also exhibited superior fracture toughness, with the highest recorded values of fracture toughness (KIC) at 3.79 ± 0.16 MPa.m1/2 and critical energy release rate (GIC) at 0.0133 ± 0.004 kJ/m2, representing improvements of 63.3% and 82.33% over neat PETG. These findings highlight the potential of PETG/ABS blends for producing 3D printed components with enhanced mechanical properties, making them ideal for applications requiring durability and flexibility.

Graphical Abstract