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Toward an Optically Transparent, Antielectrostatic, and Robust Polymer Composite: Morphology and Properties of Polycarbonate/Ionic Liquid Composites

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journal contribution
posted on 19.03.2014, 00:00 by Chenyang Xing, Xin Zheng, Liqun Xu, Jijun Jia, Jie Ren, Yongjin Li
Transparent polymeric materials with high ductility and antistatic properties have attracted much attention. A room temperature ionic liquid (IL), tributyl­(methyl)­ammonium bis­(trifluoromethane)­sulfonylimide ([tbmam+]­[Tf2N]), was integrated into polycarbonate (PC), to fabricate optically transparent antielectrostatic composites by melt processing. The morphology and physical properties of the composites were investigated. Differential scanning calorimetry and dynamic mechanical analysis indicated the depression of the glass transition temperatures of the PC/IL composites, compared with that of neat PC. This indicated the interaction between PC and the IL. Transmission electron microscopy indicated that the IL was highly compatible with PC, at low IL loadings. This resulted in enhanced antielectrostatic properties, and significantly improved elongation at break of the PC/IL composites. The PC/IL composites maintained the high transmittance of PC. In addition, the PC/IL composites with high clearance and antielectrostatic properties could be achieved by large-scale continuous melt extrusion, indicating that the method to fabricate both optically transparent and antielectrostatic composite is feasible for industrial application.