Scholarlink

<p>Thermoplastic polyurethane (TPU) is widely used in medical applications because of its biocompatibility, flexibility, and durability. The TPU instruments and equipment are subjected to sterilization procedures before being utilized in medical uses. In this research, the TPU was irradiated by an electron beam (EB) at different doses of 20, 30, 50, 100, and 200&#xa0;kGy. After irradiation, we tracked the formed free radical concentrations using Electron Spin Resonance (ESR), monitoring the intermolecular change of the TPU material. This tracking of the FRC is detected at different time intervals, including 0&#xa0;days, 1&#xa0;day, 3&#xa0;days, 7&#xa0;days, 10&#xa0;days, 20&#xa0;days, 30&#xa0;days, and 50&#xa0;days. Moreover, the impact of the EB on the intramolecular change of TPU was checked by additional techniques such as FTIR, XRD, SEM, and TGA. Moreover, the physical properties of TPU were assessed, including tensile strength and elongation@break. Furthermore, the modulus of elasticity (ME) is calculated at different strain percentages (100%, 300%, and 500%). As a result of this research, the TPU has good properties against EB irradiation within the sterilization doses (20–50&#xa0;kGy).</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Study of structure deterioration of medical thermoplastic polyurethane (TPU) after irradiation by electron beam

  • 期刊论文

  • 发表日期：

    2026年1月5日

查看全文
  • Ayman Massoud,
  • Nabila A. Maziad

摘要

Thermoplastic polyurethane (TPU) is widely used in medical applications because of its biocompatibility, flexibility, and durability. The TPU instruments and equipment are subjected to sterilization procedures before being utilized in medical uses. In this research, the TPU was irradiated by an electron beam (EB) at different doses of 20, 30, 50, 100, and 200 kGy. After irradiation, we tracked the formed free radical concentrations using Electron Spin Resonance (ESR), monitoring the intermolecular change of the TPU material. This tracking of the FRC is detected at different time intervals, including 0 days, 1 day, 3 days, 7 days, 10 days, 20 days, 30 days, and 50 days. Moreover, the impact of the EB on the intramolecular change of TPU was checked by additional techniques such as FTIR, XRD, SEM, and TGA. Moreover, the physical properties of TPU were assessed, including tensile strength and elongation@break. Furthermore, the modulus of elasticity (ME) is calculated at different strain percentages (100%, 300%, and 500%). As a result of this research, the TPU has good properties against EB irradiation within the sterilization doses (20–50 kGy).