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首页> 外文期刊>Journal of Polymers and the Environment >Modification of Thermo-Mechanical Properties of Recycled PET by Vinyl Acetate (VAc) Monomer Grafting Using Gamma Irradiation
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Modification of Thermo-Mechanical Properties of Recycled PET by Vinyl Acetate (VAc) Monomer Grafting Using Gamma Irradiation

机译：γ射线辐照的醋酸乙烯酯（VAc）单体接枝改性再生PET的热机械性能

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摘要

Vinyl acetate (VAc) monomer of different percentage was grafted onto the recycled polyethylene terephthalate (r-PET) films using gamma irradiation. The properties of these modified films were characterized by Fourier transform infrared spectroscopy (FTIR), mechanical properties testing (Tensile strength, Elongation at break), dynamic mechanical analysis (DMA) and thermo-gravimetric analysis (TGA). The Tensile Strength (TS) of the modified PET film increased by 132.25 % to the highest value of 50.12 MPa at 15% VAc monomer concentration at 3 kGy gamma dose, while the elongation at break (EB) decreased by 31.83 %. FTIR was used to investigate the molecular interaction of the modified films. TGA revealed that curve of the modified PET film shifted toward higher temperature region by 95 A degrees C, which is very close to that of PET film made from virgin flakes. The results indicate that modified PET films of better mechanical and thermal properties were successfully prepared using VAc monomer grafting by gamma irradiation technique.
机译：使用伽玛射线将不同百分比的乙酸乙烯酯（VAc）单体接枝到回收的聚对苯二甲酸乙二醇酯（r-PET）薄膜上。通过傅立叶变换红外光谱（FTIR），力学性能测试（拉伸强度，断裂伸长率），动态力学分析（DMA）和热重分析（TGA）表征了这些改性膜的性能。在3kGyγ剂量下，当VAc单体浓度为15％时，改性PET薄膜的拉伸强度（TS）增加132.25％，达到最高值50.12 MPa，而断裂伸长率（EB）降低31.83％。 FTIR用于研究改性膜的分子相互作用。 TGA显示，改性的PET膜的曲线向95℃的较高温度区域移动，这非常接近于由原始薄片制成的PET膜的曲线。结果表明，采用γ射线辐照技术成功接枝了VAc单体，制备了机械性能和热性能更好的改性PET薄膜。

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  • 来源
    《Journal of Polymers and the Environment》 |2018年第1期|83-90|共8页
  • 作者

    Lubna Mostakima M.; Salem Khandoker S.; Sarker Mamun; Khan Mubarak A.;

  • 作者单位

    Bangladesh Atom Energy Commiss, Inst Radiat & Polymer Technol, Dhaka 1000, Bangladesh|Univ Dhaka, Dept Appl Chem & Chem Engn, Dhaka 1000, Bangladesh;

    Bangladesh Atom Energy Commiss, Inst Radiat & Polymer Technol, Dhaka 1000, Bangladesh|Univ Dhaka, Dept Appl Chem & Chem Engn, Dhaka 1000, Bangladesh;

    Bangladesh Atom Energy Commiss, Inst Radiat & Polymer Technol, Dhaka 1000, Bangladesh|Univ Dhaka, Dept Appl Chem & Chem Engn, Dhaka 1000, Bangladesh;

    Bangladesh Atom Energy Commiss, Inst Radiat & Polymer Technol, Dhaka 1000, Bangladesh;

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  • 正文语种 eng
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  • 关键词

    Polyethylene terephthalate; Vinyl acetate monomer; Monomer grafting; Gamma irradiation;

    机译：聚对苯二甲酸乙二酯;乙酸乙烯酯单体;单体接枝;伽马射线辐照;

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