Improving the stability and performance of radiationinduced grafted high-density polyethylene-based anionexchange membranes by the controlling irradiation conditions
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2023
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WORKSHOP ON ION EXCHANGE MEMBRANES FOR ENERGY APPLICATIONS
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Resumo
The preparation of anion-exchange membranes (AEM) with high stability for electrochemical
devices as fuel cells is current challenge [1]. Here, a series of anion-exchange membranes
based on high-density polyethylene (HDPE) were prepared by radiation-induced grafting
technique under different pre-irradiation conditions such as irradiation dose, temperature (low
temperature (LT) and room temperature (RT)), and atmosphere (nitrogen and air). HDPE has
been considered as a promising base polymer for AMs due to its high resistance to radiation,
chemical and thermal stability, and satisfactory mechanical properties. It was elucidated that
the pre-irradiation parameters can affect the microstructure of AEMs and consequently their
properties [2]. AEMs were characterized in terms of degree of grafting (DoG), ions exchange
capacity (IEC), water uptake (WU), FT-Raman, tensile test, hydroxide conductivity, beggingof-life fuel cell test and short-term stability. A parallel between the RT-air and LT-air samples
shows very well as irradiation conditions affect significantly the AEM properties. As an
example, the irradiation temperature influences the DoG leading to an increase in DoG by
30% for AEM pre-irradiated at LT. The begging-of-life fuel cell performances at 80 °C were
found to be enhanced for LT pre-irradiated HDPE-based AEM (2.1 W cm-2
). Short-term
stability (80°C, RH = 80%) for RT-air and LT-air samples exhibited rates of 0.17 and 0.06 %
h
-1
. Hence, the present study advances the understanding of the role played by the
irradiation process on the final properties of radiation-induced grafted HDPE-based AEMs
and offers new possibilities to guide future developments in anion-exchange membranes
synthesis.
Como referenciar
BARBOSA, ANDREY S.; BIANCOLLI, ANA L.G.; KODAMA, YASKO; SANTIAGO, ELISABETE I. Improving the stability and performance of radiationinduced grafted high-density polyethylene-based anionexchange membranes by the controlling irradiation conditions. In: WORKSHOP ON ION EXCHANGE MEMBRANES FOR ENERGY APPLICATIONS, June 20-22, 2023, Bad Zwischenahn, Germany. Abstract... Disponível em: https://repositorio.ipen.br/handle/123456789/47917. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.