In the present study, polystyrene:europium (III) oxide polymer films at a ratio of 95:5 wt% were prepared using a solution casting technique. These polymeric films were irradiated with 5, 25 and 50 kGy γ-radiation doses and their thermoluminescence (TL) and thermal properties were studied as a function of radiation dose. Analysis of Fourier transform infrared spectra revealed different modes of vibration and polymer-filler interaction. Reduction of vibrational modes with radiation dose was observed. The TL glow curve intensity was observed to increase with increasing radiation dose and to become broader in the 378 K and 444 K regions. Detrapping of electrons implied by the glow curve was caused by thermally induced macromolecular motion, concurrent with β-relaxation in polystyrene. The TL glow curve parameters were computed using a glow curve deconvolution method. Differential scanning calorimetry analysis indicated that the glass transition temperature (Tg ) increased with increase in dose, suggesting crosslinking of the polymer chain. Scanning electron microscopy analysis evidenced the change in surface morphology due to γ-irradiation.

中文翻译：

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γ辐照对聚苯乙烯/氧化eur（III）复合薄膜热和热致发光性能的影响。

在本研究中，使用溶液流延技术制备了比例为95：5 wt％的聚苯乙烯：（（III）氧化物聚合物薄膜。用5、25和50 kGyγ辐照剂量辐照这些聚合物薄膜，并研究其热致发光（TL）和热性能与辐照剂量的关系。傅立叶变换红外光谱的分析揭示了振动和聚合物-填料相互作用的不同模式。观察到振动模式随辐射剂量的减少。观察到TL辉光曲线强度随辐射剂量的增加而增加，并在378 K和444 K区域变宽。辉光曲线暗示的电子的去俘获是由热诱导的大分子运动引起的，同时聚苯乙烯中存在β松弛。使用辉光曲线去卷积方法计算TL辉光曲线参数。差示扫描量热分析表明，玻璃化转变温度（Tg）随剂量增加而增加，表明聚合物链交联。扫描电子显微镜分析证明了由于γ辐射引起的表面形态的变化。