CINE Conference 2021: "Influence of radiation-induced ...", by Dr. Ana Laura G. Biancolli, IPEN/USP

Опубликовано: 26 Октябрь 2021
на канале: Cine Energy

CINE Conference 2021: "Influence of radiation-induced grafting methods on the properties of LDPE-based anion-exchange membranes", by Dr. Ana Laura G. Biancolli, IPEN/USP

Controlling the synthesis parameters during radiation-induced grafting (RIG) is a key feature to design anion-exchange membranes (AEMs) with enhanced properties that lead to high performances and stability. The present study provides a systematic investigation of the effect of RIG methods on physicochemical properties of LDPE-based AEMs with similar degree of grafting (DoG) and ion exchange capacity (IEC). Samples grafted by two different methods have the same molecular structure, but distinct physicochemical properties due to markedly differences in the degree of crosslinking. Grafting step directly influences the internal structure and morphology of AEMs. Detailed characterization showed that RIG method determines the mechanical properties, water transport, and the distribution of ionic groups in AEMs. These characteristics have direct impact on fuel cell performance, anion-conductivity and AEM stability.

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