کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1486435 | 1510564 | 2005 | 6 صفحه PDF | دانلود رایگان |

The relationship between ionic conduction and matrix glass transition was investigated in selected plasticized and doped poly((ethylene glycol)n-co-5-sulfoisophthalate lithium) ionomers. Plasticization with a poly(ethylene glycol) oligomer significantly increases the ionic conductivity, despite a decrease in lithium concentration. Doping with LiClO4 leads to much lower conductivity, despite the increase in Li+ content. These observations were reconciled by considering the corresponding change in ionomer glass transition temperature (Tg), and it was found that ionomers with different plasticizer/dopant levels exhibit similar conductivity at constant T − Tg. The fact that Tg plays such a strong role suggests that Li+ ion mobility is controlled by segmental motion of PEO.
Journal: Journal of Non-Crystalline Solids - Volume 351, Issues 33–36, 15 September 2005, Pages 2825–2830