Biodegradation of thermally oxidized polyethylene

Weiland, Michèle; Daro, Arlette; David, Christiane

doi:10.1016/0141-3910(95)00040-s

Cited by 144 publications

(74 citation statements)

References 17 publications

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“…Weiland et al 164 have investigated the biodegradability of thermally oxidized PE using a wide range of biotic conditions, including di †erent bacteria on solid agar, various composting units (varying in temperature, moisture content or composting medium) and di †erent liquid media. There was some evidence of oxygen uptake in the respirometric method using liquid suspensions of compost micro-organisms and very small concentrations of substrate.…”

Section: Degradation Processesmentioning

confidence: 99%

A review of biodegradable polymers: uses, current developments in the synthesis and characterization of biodegradable polyesters, blends of biodegradable polymers and recent advances in biodegradation studies

Amass¹,

Amass²,

Tighe³

1998

Polym. Int.

921

488

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Section: Degradation Processesmentioning

confidence: 99%

A review of biodegradable polymers: uses, current developments in the synthesis and characterization of biodegradable polyesters, blends of biodegradable polymers and recent advances in biodegradation studies

Amass¹,

Amass²,

Tighe³

1998

Polym. Int.

921

488

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“…Initial abiotic oxidation is an important stage as it determines the rate of the entire process. In this stage the incorporation of oxygen into the carbon chain polymer backbone results in the formation of functional groups such as carboxylic or hydro-carboxylic acids, esters as well as aldehydes and alcohols [3][4][5][6][7] . Every year, about 140 million tons of synthetic polymers are produced and 30% of this amount is used as packing 8,9 .…”

Section: Introductionmentioning

confidence: 99%

Study of oxo-biodegradable polyethylene degradation in simulated soil

et al. 2014

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This study aims to evaluate the influence of pro-oxidant additive and accelerated aging on the degradation of polyethylene (PE) samples in simulated soil, in accordance with ASTM G160-03. Films of polyethylene with and without pro-oxidant additive were studied, before and after 72 hours of accelerated aging. The films were initially characterized by analyses of Scanning Electron Microscopy (SEM) and Fourier Transform Infrared Spectroscopy (FTIR) (to evaluate the Carbonyl Index (CI)). The films were exposed for 30, 60 and 90 days in simulated soil, with controlled moisture and soil pH. The results showed the degradation of polyethylene films through an increase of CI in samples with additive and accelerated aging after 30 days of exposure, and a decrease, after 60 and 90 days, indicating the uptake of material oxidation by-products by microorganisms. The polyethylene films without pro-oxidant additive after accelerated aging showed greater structural and surface modifications, as compared to films with the additive.

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“…Photodegradation can aid rapid disintegration of polymers into a powdery residue with a much-reduced visual impact [2][3][4]. Further abiotic degradation of such polyethylene can reduce molecular mass to levels where the material becomes susceptible to biodegradation [3,[5][6][7][8]. Prodegradant additives are used to enhance such oxo-biodegradation of polyolefins [4,[7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Mn2Al-LDH- and Co2Al-LDH-stearate as photodegradants for LDPE film

Magagula

Nhlapo

Focke

2009

Polymer Degradation and Stability

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The layered double hydroxides (LDH) Mn 2 Al-LDH-stearate and Co 2 Al-LDH-stearate were prepared by a surfactant-assisted intercalation of the corresponding precursor LDH-CO 3 forms.These compounds were evaluated as potential photodegradant additives in low density polyethylene films with a thickness of ca. 40 mm. They were incorporated into blown polyethylene films via a 10% masterbatch. The films were subjected to accelerated ageing in a QUV weatherometer. The machine was fitted with A320 lamps and operated on a dry cycle at 63 C and an irradiance of 0.67 W/m 2 . It was found that 100 h of QUV exposure was sufficient to cause mechanical embrittlement of films containing as little as 0.1% of either active.

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Biodegradation of thermally oxidized polyethylene

Cited by 144 publications

References 17 publications

A review of biodegradable polymers: uses, current developments in the synthesis and characterization of biodegradable polyesters, blends of biodegradable polymers and recent advances in biodegradation studies

A review of biodegradable polymers: uses, current developments in the synthesis and characterization of biodegradable polyesters, blends of biodegradable polymers and recent advances in biodegradation studies

Study of oxo-biodegradable polyethylene degradation in simulated soil

Mn2Al-LDH- and Co2Al-LDH-stearate as photodegradants for LDPE film

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