Inorganic-Macroion-Induced Formation of Bicontinuous Block Copolymer Nanocomposites with Enhanced Conductivity and Modulus |
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| Authors: | Liying Zhang Tingting Cui Xiao Cao Prof Chengji Zhao Prof Quan Chen Prof Lixin Wu Prof Haolong Li |
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| Institution: | 1. State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Qianjin Avenue 2699, Changchun, 130012 China;2. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 China;3. Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, Qianjin Avenue 2699, Changchun, 130012 China |
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| Abstract: | A facile and electrostatically driven approach has been developed to prepare bicontinuous polymer nanocomposites that is based on the polyoxometalate (POM) macroion induced phase transition of PS-b-P2VP from an initial lamellar phase to a stable bicontinuous phase. The multi-charged POMs can electrostatically cross-link P2VP blocks and give rise to bicontinuous phases in which the POM hybrid conductive domains occupy a large volume fraction of more than 50 %. Furthermore, the POMs can give rise to high proton conductivity and serve as nanoenhancers, endowing the bicontinuous nanocomposites with a conductivity of 0.1 mS cm−1 and a Young's modulus of 7.4 GPa at room temperature; these values are greater than those of pristine PS-b-P2VP by two orders of magnitude and a factor of 1.8, respectively. This approach can provide a new concept based on electrostatic control to design functional bicontinuous polymer materials. |
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| Keywords: | bicontinuous structures block copolymers electrostatic interactions polymer nanocomposites polyoxometalates |
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