VARIATION IN DIFFERENT PROPERTIES OF SOLID POLYMER ELECTROLYTES ON GAMMA IRRADIATION: A COMPUTER SIMULATION STUDY
It is well known that whenever solid polymer electrolytes (SPE) are exposed to high energy radiation, the microstructure and the molecular weight distribution of the SPE change by the process of crosslinking and/or scission of the host polymer. Both of these processes may happen simultaneously but one process dominates. Viscosity in solution, is strongly dependent on molecular weight distribution and so is the ion conductivity. In this paper we report a computer simulation study of the changes produced due to irradiation on SPE and verify them with experimentally obtained data (PEO based). We assume the initial polymer electrolyte to have a Gaussian type molecular weight distribution (MWD). Crosslinking and scission processes are repeated N times and averaged over a large number of configurations. We assume that N is proportional to the radiation dose. The resulting MWD has been observed to be bi-disperse, with two peaks. We have calculated viscosity average molecular weight from this final distribution. We compare our results with the experimental results for change in viscosity and ion conductivity with irradiation. Higher viscosity is associated with lower ion conductivity and vice versa.
RUMA RAY T. K. BALLABH S. TARAFDAR
Physics Department, Gurudas College,Kolkata – 54, West Bengal, India Condensed Matter Physics Research Centre, Jadavpur University,Kolkata – 32, West Bengal, India Condensed Matter Physics Research Centre, Jadavpur University, Kolkata – 32, West Bengal, India
国际会议
The 12th Asian Conference on Solid State Ionics(第十二届亚洲固态离子学会议暨第十五届中国固态离子学会议)
武汉
英文
44-49
2010-05-02（万方平台首次上网日期，不代表论文的发表时间）