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３５ＭｅＶ／ｕ Ａｒ离子在室温下辐照了多层堆叠的半晶质聚酯膜，采用傅立叶转换的红外光吸收技术分析和研究了由辐照引起的化学键断裂及其对离子剂量、离子在样品中的平均电子能量损失和吸收剂量的依赖性．结果表明，辐照导致聚酯膜中发生了明显的化学键断裂，断键过程主要发生在反式构型的乙二醇残留物和苯环的对位上，苯环的基本结构在辐照中变化较小．断键不仅强烈地依赖于离子的照射剂量，而且还跟样品中电子能量沉积密切相关，明显的断键发生在４．０ＭＧｙ以上的吸收剂量．
35MeV / u Ar ions were irradiated at room temperature on the multilayered semi-crystalline polyester film. The Fourier transform infrared absorption spectroscopy was used to analyze and study the chemical bond rupture caused by irradiation and its effect on the ion dose. In the average electron energy loss and absorbed dose dependence. The results show that the radiation led to the polyester film obvious chemical bond cleavage, the bond breaking process occurs mainly in the trans structure of ethylene glycol residue and the benzene ring on the position, the basic structure of the benzene ring in the irradiation Change is small. The broken bond is strongly dependent not only on the ion dose, but also on the electron energy deposition in the sample, with an apparent breakthrough of the dose above 4.0 MGy.