Obtention and characterization of gamma-irradiated recycled HDPE/EPDDM blends
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2017
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INTERNATIONAL CONFERENCE ON APPLICATIONS OF RADIATION SCIENCE AND TECHNOLOGY
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Resumo
Elastomeric materials have specific properties that allow the development and use of a
variety of products. The application of elastomeric compounds in the automotive industry
has increased considerably; due this, high volume of parts are disposal and among these,
thermosetting materials, that are not easily recyclable. High density polyethylene (HDPE) is
a commodity material with a wide range of uses in the industry. What make this polymeric
material so interesting to the market are its unique properties such as good conformability,
high resistance to heat and chemicals, and a relative low cost. Another characteristic for
this material is its good reprocessability, which is the ability of being recycled many times.
Thus, the environmental impact of both materials is evident, thereby promoting essential
damage.
In the present work the HDPE matrix has been recycled four times from original substrate
and mixed to EPDM rubber not vulcanized in proportions from 1% to 10%. The
-irradiation
process was applied at 50 kGy and 100 kGy in both original and recycled blend samples;
in this way, mechanical properties and morphologic characteristics were evaluated. The
results shown EPDM in quantities of 1% bring high tensile strength and yield strength to
recycled non-irradiated blends compared to higher concentration of 10%, that present high
impact resistance. Irradiation process applied to these samples carried an increase in these
parameters and the recycled blends presented higher tensile strength values than pristine
HDPE samples. Blends are homogeneous and presented no specific morphologic aspects
that suggests HDPE and EPDM are miscible and compatible components; crystallinity is
higher in low EPDM content blend and at a dose value of 50 kGy the crystallinity reached
the maximum value of 79:5% compared to 72:2% for pristine HDPE. These results suggest
irradiated blends formed by recycled HDPE with 1% of EPDM present high viability for
industrial use due its high mechanical performance compared its low production cost.
Como referenciar
GERALDO, A.; MOURA, E.; GABRIEL, L. Obtention and characterization of gamma-irradiated recycled HDPE/EPDDM blends. In: INTERNATIONAL CONFERENCE ON APPLICATIONS OF RADIATION SCIENCE AND TECHNOLOGY, April 24-28, 2017, Vienna, Austria. Abstract... Vienna: IAEA, 2017. p. 375-375. Disponível em: http://repositorio.ipen.br/handle/123456789/27777. 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.