Chemical characterization of variably degraded fibre glass reinforced plastic from the marine environment. (December 2021)

• Record Type: Journal Article
• Authors: Hopkinson, Laurence; Ostapishin, Stanislav; Kristova, Petra; Hamilton, Katy; Ciocan, Corina
• Is Part Of: Marine pollution bulletin. Volume 173:Part B(2021)
• Publication Date: 2021-12
• Subjects: Fibre glass reinforced plastic -- Mid infrared -- E-glass -- Poly diallyl phthalate -- Polyester; Marine pollution -- Periodicals; Marine Biology -- Periodicals; Water Pollution -- Periodicals; Mer -- Pollution -- Périodiques; Publications périodiques; Pollution des mers; Lutte antipollution; Electronic journals; 363.7394
• DOI: 10.1016/j.marpolbul.2021.113094
• Languages: English
• ISSNs: 0025-326X

Abstract

Abstract: Glass reinforced plastic (GRP) constitutes the commonest component of small sea going craft of all descriptions. This study provides a baseline molecular and elemental account of GRP's recovered from the marine environment. Fourteen samples of GRP sourced from scrapyards and one sample sourced from a GRP boat manufacturer were examined. Samples were analysed by x-ray fluorescence and mid infrared (MIR). The latter technique confirmed that all samples contained the same polyester resin, poly diallyl phthalate (PDP). The two techniques in combination indicate the presence of aluminium calcium borosilicate E -glass fibres (E denotes electrical) of variable origins. MIR results are consistent with hydrolysis of polyester, weakening of the glass fibre resin interface facilitating exposure of e-type fibres to water which accelerates fibre breakage. The implication being that aging of GRP in the marine environment represent sources for micro (<5 mm) and macro plastic release, plus fragmented asbestiform-like silicate fibres. Highlights: The spectroscopic signature of E-glass set in thermoset resin. A molecular and elemental account of variably degraded glass reinforced plastics. Polyester resin and E-glass chemical degradation in the marine environment.