Modification of optical, chemical and structural response of polymethyl methacrylate polymer by 70 MeV carbon ion irradiation

作者：Singh Paramjit; Kumar Rajesh^*; Virk H S; Prasad Rajendra

来源：Indian Journal of Pure & Applied Physics, 2010, 48(5): 321-325.

• Polymethyl methacrylate polymer
• C(5+) Ion irradiation
• Ion beam modification
• FTIR
• UV-Vis
• X-ray diffraction

Polymethyl methacrylate (PMMA) foils were irradiated under vacuum with 70 MeV C(5+) ions to the fluences of 3.1x10(11), 3.7x10(12), 1.8x10(13), 5.6x10(13) and 1.2x10(14) ions cm(-2). Ion induced optical, chemical and structural modifications were studied by ultraviolet, visible (UV-Vis) and Fourier Transform Infrared (FTIR) spectroscopy and X-ray diffractometer (XRD). PMMA suffers degradation under irradiation, UV-Vis data show the increase of optical absorbance and the shift of absorption edge from the UV towards visible with the increase of the fluences, attributing to the formation of conjugated system of bonds. The intensity of infrared bands and characteristics of different chemical functional groups are found to decrease with Swift Heavy Ion (SHI). Crystallite size of irradiated sample shows a decrease of 8%.

• 出版日期2010-5