首页> 外文期刊>Journal of Applied Polymer Science >Effect of the electron beam irradiation on the properties of epoxidized natural rubber (ENR 50) compatibilized linear low-density polyethylene/soya powder blends
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Effect of the electron beam irradiation on the properties of epoxidized natural rubber (ENR 50) compatibilized linear low-density polyethylene/soya powder blends

机译:电子束辐照对环氧化天然橡胶(ENR 50)相容的线性低密度聚乙烯/大豆粉混合物的性能的影响

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摘要

Linear low-density polyethylene/soya powder blends were prepared by using an internal mixer at 150°C. The soya powder content ranged from 5 to 40 wt %. Epoxidized natural rubber with 50 mol % epoxidation (ENR 50) was added as a compatibilizer. The blends were irradiated by electron beam (EB) at a constant dose of 30 kGy. The changes in gel fraction, tensile properties, morphological and thermal properties of the samples were investigated. The gel content increased after EB irradiation. However, the increment of gel content was hindered by increasing soya powder content. The tensile strength and Young's modulus of the blends were increased by EB whereas the elongation at break decreased. The tensile fracture surface also support the reduction of elongation at break by EB irradiation. Further analysis on the irradiated blends using Fourier transform infrared spectra indicated an increase of oxygenated product after undergoing EB irradiation. The differential scanning calorimetry result indicated that the melting temperature of the blends decreased after EB irradiation whereas the crystallinity increased. EB irradiation also enhanced the thermal stability of the blends as indicated by thermogravimetric analysis.
机译:通过使用内部混合器在150℃下制备线性低密度聚乙烯/大豆粉末共混物。大豆粉含量为5至40重量%。加入具有50mol%环氧化的环氧化天然橡胶(ENR 50)作为增容剂。用电子束(EB)以30kGy的恒定剂量辐照掺合物。研究了样品的凝胶分数,拉伸性能,形态和热性能的变化。 EB照射后凝胶含量增加。但是,大豆粉含量的增加阻碍了凝胶含量的增加。 EB提高了共混物的拉伸强度和杨氏模量,而断裂伸长率降低了。拉伸断裂表面还支持通过EB辐射降低断裂伸长率。使用傅里叶变换红外光谱对辐照混合物进行的进一步分析表明,在进行EB辐照后,氧化产物的含量增加了。差示扫描量热法结果表明,在EB照射后,共混物的熔融温度降低,而结晶度增加。热重分析表明,EB辐射还增强了共混物的热稳定性。

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