Citation: Sen-Lin Gu, Huan-Huan Liu, Huan Cao, Claude Mercier, Yong-Jin Li. Investigations on the Interactions between Li-TFSI and Glass Fibers in the Ternary PP/GF/Li-TFSI Composites[J]. Chinese Journal of Polymer Science, ;2018, 36(1): 113-118. doi: 10.1007/s10118-018-2018-x shu

Investigations on the Interactions between Li-TFSI and Glass Fibers in the Ternary PP/GF/Li-TFSI Composites

a.
College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
b.
Solvay Co. Ltd, Shanghai 201100, China

Corresponding author: Yong-Jin Li, yongjin-li@hznu.edu.cn
Received Date: 6 July 2017
Accepted Date: 8 August 2017
Available Online: 30 October 2017

The polypropylene/glass fiber (PP/GF) composites with excellent antistatic performance and improved mechanical properties have been reported by incorporation of a very small amount of the organic salt, lithium bis(trifluoromethanesulfonyl)imide (Li-TFSI), into the PP/GF composites. It was considered that GF could play the role as the pathways for the movements of ions in the ternary composites. In this work, the interactions between Li-TFSI and glass fiber and the effects of such interactions on the physical properties of the composites have been systematically investigated. Three types of glass fibers with different-OH group concentrations have been prepared in order to compare the interactions between GF and Li-TFSI. It was found that the-OH group concentrations on the surface of glass fiber have significant effects on interactions between glass fibers and Li-TFSI. Such interactions are crucial for both the antistatic and mechanical performances of the final PP/GF/Li-TFSI composites. The investigation indicated that the GF with high-OH group concentrations confined the movement of TFSI^-, which decreased the antistatic properties of PP/GF/Li-TFSI composites. On the other hand, the GF with low-OH group concentrations inhibited the absorption of Li-TFSI onto the GF, which also hindered the formation of Li-TFSI conductive pathway. The best antistatic performance of the ternary composites can be achieved at the intermediate-OH concentrations on the GF.
- Polypropylene,
- Glass fiber,
- Li-TFSI,
- Antistatic performance
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