Citation: CHEN Xiwen, FANG Shibi, HAO Ning, JIANG Yingyan. SINGLE IONIC CONDUCTI0N OF POLYSILOXANE CONTAINING PROPYLENE CARBONATE GROUP AND LITHIUM POLYMERIC SALTS*[J]. Chinese Journal of Polymer Science, ;1996, 14(4): 368-375. shu

SINGLE IONIC CONDUCTI0N OF POLYSILOXANE CONTAINING PROPYLENE CARBONATE GROUP AND LITHIUM POLYMERIC SALTS*

Received Date: 17 January 1996

The polysiloxane containing propylene carbonate side group and several lithium poly-meric salts were synthesized. The structure were confirmed by IR, NMR and XPS. Theblending systems of polysiloxane containing propylene carbonate group with different lithiumpolymeric salts were studied by ion conductivity XPS and DSC. Different lithium poly-meric salts in the blending system lead to conductivity arranged in the following sequence:poly(lithium ethylenebenzene sulfonate methylsiloxane)>poly(lithium propionate methylsiloxane)>poly(lithium propylsulfonate methylsiloxane)>poly(lithium styrenesulfonate).In the blending system the best single ion conductivity was close to 10-5 Scm -1 at room temperature.XPS showed that at low lithium salt concentration the conductivity increased with the increasing content of lithium salt,in consequence of the increase of free ion and solvent separated ion pair.At high lithium salt concentration the free ion was absent and the solvent-separated ion pair functioned carrier.
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