Evaluation of geomembrane UV degradation using melt flow index and oxidative induction time tests


Autoria(s): Lodi, P. C.; Bueno, B. S.; Vilar, O. M.
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

20/05/2014

20/05/2014

01/01/2008

Resumo

Many factors such as the sunlight, intensity of radiation, temperature, and moisture may influence the degradation process of geosynthetics. UV stabilizers are used especially in polyolefin geomembrane to prevent the degradation process. In these geomembranes the service lifetime is initially governed by the consumption of antioxidants. Tests like MFI and OIT are a alternative to detect the oxidative degradation in polyolefins. This article evaluates HDPE geomembrane degradation after UV exposure through the results of MFI and OIT tests. Two kinds of geomembranes were evaluated: a black and smooth (0.8, 1.0, 1.5, 2.5 mm) and a white and textured (1.0 mm). MFI test showed some levels of superficial degradation (crosslink) in HDPE geomembrane.

Formato

40-43

Identificador

http://dx.doi.org/10.1007/978-3-540-69313-0_9

Geosynthetics In Civil and Environmental Engineering. Hangzhou: Zhejiang Univ Press, p. 40-43, 2008.

http://hdl.handle.net/11449/9635

WOS:000259486300009

Idioma(s)

eng

Publicador

Zhejiang Univ Press

Relação

Geosynthetics In Civil and Environmental Engineering

Direitos

closedAccess

Palavras-Chave #geomembranes #UV exposure #MFI and OIT tests
Tipo

info:eu-repo/semantics/conferencePaper