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• W3197689968 abstract "Abstract Graphene is a promising material for membrane applications. However, the graphene production with large specific area and good structural quality is a challenge. Therefore, the production and characterization of composite membranes with graphene grown by chemical vapor deposition (CVD) over a porous polymethylmethacrylate (PMMA) substrate was investigated. The experimental strategy consisted in applying CVD‐graphene on a PMMA surface using PMMA‐assisted graphene wet transfer. The proposed methodology resulted in large‐area membranes with 2 cm diameter. The samples were characterized by Raman spectroscopy, indicating the presence of graphene in good quality and relative structural integrity. The analysis by scanning electron microscopy revealed the formation of a microporous support with an asymmetric structure. The gas permeation measurements of graphene/PMMA membranes showed a permeability reduction of 81.9% for CO 2 and 83.7% for N 2 . The contribution of PMMA to flow resistance was 2% and 11% for CO 2 and N 2 , respectively, and the contribution of graphene was 98% and 89% for CO 2 and N 2 . Therefore, this research presents a potential advance in transferring graphene to porous support, and the impermeability process of membranes composed of graphene/PMMA, a fundamental step for the development of graphene membranes before the production of controlled‐sized pores." @default.
• W3197689968 created "2021-09-13" @default.
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• W3197689968 date "2021-09-07" @default.
• W3197689968 modified "2023-09-26" @default.
• W3197689968 title "Chemical vapor deposition graphene transfer onto asymmetric <scp>PMMA</scp> support" @default.
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• W3197689968 doi "https://doi.org/10.1002/app.51590" @default.
• W3197689968 hasPublicationYear "2021" @default.
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