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A simple approach to develop conductive poly(methyl methacrylate)-reduced graphene oxide composite with segregated network.
- Source :
-
Polymer Bulletin . Jul2024, Vol. 81 Issue 10, p8917-8931. 15p. - Publication Year :
- 2024
-
Abstract
- In-situ methods are highly desirable for the development of segregated conductive composites. We demonstrate a benign and simple method for developing segregated conductive poly (methyl methacrylate)/reduced graphene oxide composites by incorporating two-step in-situ reduction of graphene oxide (GO) with poly(methyl methacrylate) (PMMA) microspheres. First, a one-pot method is demonstrated that involves the synthesis of positively charged PMMA latex followed by in-situ hydrazine reduction of negatively charged GO. In the second step, thermal reduction at 150 °C is used to increase the reduction level of GO. As a result of two-step reduction of GO, the obtained composite exhibits good correlation between their structural, morphological, thermal, and electrical properties. Compared to PMMA matrix, 4 wt % composites formed after in-situ reduction using hydrazine (PMMA-rGO-H) and two-step method (PMMA-rGO-HT) exhibit approximately 108 and 109 fold increases in electrical conductivity, respectively. Further, the percolation threshold for conduction is 1 wt%, indicating the generation of segregated conductive networks. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01700839
- Volume :
- 81
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- Polymer Bulletin
- Publication Type :
- Academic Journal
- Accession number :
- 177816664
- Full Text :
- https://doi.org/10.1007/s00289-024-05151-x