The effects of ion irradiation on the elastic and surface properties, nanostructure and the chemical changes of the widely used polydimethylsiloxane (PDMS) polymer were investigated as a function of the ion fluence, induced by high-energy ionizing radiation (2.0 MeV proton beam). The polymer was irradiated with different fluences of protons and then the chemical changes, the elastic modulus and surface roughness were investigated by infrared spectroscopy (ATR-FTIR) and Atomic Force Microscopy (AFM). The FT-IR measurements showed very significant chemical changes in the material upon proton irradiation, such as detachment of methyl side groups first, then the starting of the main chain scissions, until the major silicatization of the PDMS by the formation of an inorganic silica like final product (SiO_x). The AFM force curves were obtained by performing contact-mode point-spectroscopy. Their evaluation showed, that the surface elastic properties of PDMS can be controlled in the range of 240 MPa to 49 GPa (Young's modulus) with ion fluencies between 1.68 × 10¹³ ions/cm² to 1.25 × 10¹⁶ ions/cm², respectively. Compared to the 3–4 MPa of the reference material this indicates a more than four orders of magnitude increase in the elastic modulus of the material. The accompanying changes in the nanostructure of the polymer were characterized with AFM topography measurements and are also discussed in detail.

研究了高能电离辐射（2.0 MeV质子束）引起的离子通量对离子辐照对广泛使用的聚二甲基硅氧烷（PDMS）聚合物的弹性和表面性质，纳米结构以及化学变化的影响。用不同的质子通量辐照聚合物，然后通过红外光谱（ATR-FTIR）和原子力显微镜（AFM）研究化学变化，弹性模量和表面粗糙度。FT-IR测量显示质子辐照后材料中的化学变化非常显着，例如首先分离出甲基侧基，然后开始主链断裂，直至通过形成无机二氧化硅（如二氧化硅）使PDMS发生重大硅化作用。最终产品（SiO _x）。AFM力曲线是通过执行接触模式点光谱法获得的。他们的评估表明，PDMS的表面弹性可以控制在240 MPa至49 GPa（杨氏模量）的范围内，离子通量分别在1.68×10 ¹³离子/ cm ²至1.25×10 ¹⁶离子/ cm ^2之间。 。与标准材料的3-4 MPa相比，这表明材料的弹性模量增加了四个数量级以上。聚合物纳米结构的伴随变化通过AFM形貌测量进行了表征，并进行了详细讨论。