Optimum concentration of chain-breaking antioxidant to improve thermalstability of ether-based TPU

Thermoplastic polyurethanes (TPU) are versatile copolymers with alternating hard and soft segments,offering a balance of strength and flexibility. However, TPU is inclined to thermal degradation duringprocessing due such as thermal degradation at extrusion temperatures. Antioxidants are essentialadditives used to prevent the undesired degradation. This study investigates the efficacy of chainbreakingantioxidants, focusing on antioxidants like Irganox ۱۰۱۰. Experimental methods involvedmixing TPU with antioxidants and subjecting them to thermal aging at ۱۵۰°C. Mechanical propertieswere evaluated to assess the efficiency of the antioxidant. Results indicate superior stabilization withIrganox ۱۰۱۰, attributed to its better solubility in the TPU matrix. Increasing Irganox ۱۰۱۰concentration up to ۰.۱ phr improved stabilization efficiency in ۲۴hours aging. In conclusion, irganox۱۰۱۰ demonstrates outstanding potential for enhancing the thermal stability and mechanicalproperties of TPU elastomers, offering valuable insights for polymer processing and applications.

کلیدواژه ها:

Polymer Synthesis and Characterization ، antioxidant ، degradation ، Thermoplasticpolyurethane ، Therml stability