Spectroscopic and thermal studies of electron irradiated polyimide

6MeV pulsed electron beam induced surface and structural changes in polyimide

“…For e.g., the effects of 3 MeV proton radiation on the mechanical properties [7], 2 MeV electron irradiation on spectroscopic and thermal properties [8], 2 MeV electron radiation on mechanical properties [9] and 4 MeV light ions on hardness and Young's modulus [10] of various polyimides are reported. However, more investigations are needed as far as the radiation energy, mode of energy deposition and energy densities are concerned.…”

Investigations on the optical, thermal and surface modifications of electron irradiated l-threonine single crystals

“…The irradiation of crystals by MeV electron beam also introduces defects in crystals and hence affects their physical and chemical composition. Disordering the crystal lattice and their composition by electron irradiation produces change in electrical conductivity and optical properties depending upon the extent of the damage caused and their penetration depth of electrons which varies with both the energy of the electron and the atomic number of the material under consideration [1][2][3].…”

A comparative study on the effects of Co-60 gamma radiation on polypropylene and polyimide

“…These techniques not only facilitate in understanding the fundamental radiation physics and chemistry of polymers, but also provide information required for designing radiation stable polymeric systems such as blends and composites, radiation processing of polymers, radiation-enhanced diffusion, tailoring the properties and radiation-assisted synthesis of polymer nanocomposites. This requires a comprehensive and thorough understanding of effects of various particulate as well as non-particulate radiations on both radiation-resistant as well as radiation-sensitive polymers (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11).…”

“…PI (Kapton), Pyromellitic Dianhydride (PMDA) and 4,4 -Oxydianiline (ODA), is an important aromatic polymer known for its outstanding mechanical strength, excellent insulating properties, high glass transition temperature, light weight, low density and a superior thermal stability. It is used in space-crafts and nuclear, aerospace and microelectronic industries (4,5,9,29,30).…”