Impact of Solar Radiation Effects on the Physicochemical Properties of Polyethylene (PE) Plastic Film

Abdelhafidi, A.; Babaghayou, I.M.; Chabira, Salem Fouad; Sebaa, M.

doi:10.1016/j.sbspro.2015.09.002

Cited by 18 publications

(12 citation statements)

References 7 publications

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“…Exposure of polyethylene films to solar radiation induces weathering, altering the molecular weight and physicochemical properties of the polymer, through reactions with oxygen, crosslinking, and chain scission reactions (Abdelhafidi et al, 2015). Several studies on polymer weathering have used mechanical properties tests to measure the degree of weathering achieved.…”

Section: Discussionmentioning

confidence: 99%

Microplastics Generation: Onset of Fragmentation of Polyethylene Films in Marine Environment Mesocosms

et al. 2017

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The fragmentation of high-density polyethylene (HDPE) films from single-use supermarket plastic bags to microplastics under laboratory-simulated onshore and nearshore conditions was investigated for a period of 6 months. The weathering process of the plastic strips either on beach sand or in seawater under direct natural sunlight was monitored by tensile strength, molecular weight measurements, FTIR, weight loss, and image processing of photographs of the plastic strips before and after mild mechanical stress was applied. The latter represents a novel method proposed for determining the onset of fragmentation through the application of mild mechanical stress on the weathered plastic samples emulating the action of sand and wind on a beach. It was found that 12 h of application of mild mechanical stress in rotating glass bottles filled partially with sand was sufficient time to reach the maximum degree of fragmentation that could occur for the weathered plastics samples being tested. For example, applied mechanical stress yielded an area loss of almost 14% for samples weathered for a period of 5 months and about 16.7% after 5.5 months. While tensile strength tests and molecular weight measurements were rather inconclusive till the very last month when the onset of fragmentation was identified; FTIR measurements revealed that samples under ultraviolet irradiation were gradually modified chemically until fragmentation commenced. After 6 months of weathering, molecular weight measurements showed a 60% reduction for sample SMB-1 whereas for sample SMB-2 the measurement was not possible due to extensive fragmentation. The onset of fragmentation for SMB-1 and SMB-2 samples occurred at a cumulative luminance of 5.3 × 10 6 lux•d and in the presence of atmospheric oxygen whereby the polymer films broke down partially to microplastics. When the UV exposure reached 7.2 × 10 6 lux•d the weathered plastic strips broke down fully to microplastics with the application of a mild mechanical stress. Samples placed in seawater proved to be resistant to fragmentation compared to those on sand over the 6-month period of the weathering experiment. The direct implication of this work is that beached macroplastic debris should be regularly collected from the seashore before they are weathered by sunlight and returned to the sea as microplastics by the action of high waves or strong winds.

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Section: Discussionmentioning

confidence: 99%

Microplastics Generation: Onset of Fragmentation of Polyethylene Films in Marine Environment Mesocosms

et al. 2017

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“…The main reason for the destruction of PM is the oxidation of the material by air oxygen, with an increase in the rate of this process at elevated temperatures [3,10]. The main option to protect the PM from thermo-oxidative destruction is to add a special antioxidant supplement that inhibits the destruction process [4].…”

Section: Discussion Of the Resultsmentioning

confidence: 99%

“…The influence of InH from a series of HP (1,2) and quinones (3)(4)(5)(6) in the presence of the initiator AIBN on destructive changes in PE in order to determine the effectiveness of the action of individual InH and their synergistic effect was investigated.…”

Section: Discussion Of the Resultsmentioning

confidence: 99%

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Synergism of the action of some stabilisers against the destruction of polymer materials

et al. 2021

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The process of thermal-oxidative degradation of polymer materials has been studied on the example of polyethylene in the presence of quinones and / or nitroxyl radicals. The synergistic effect of the positive action of a mixture of stabilisers from a number of quinones and nitroxyl radicals on the destructive process of polyethylene has been established. It has been shown that the rate of degradation has significantly slowed down when an equimolecular mixture of 4-acetylamino-2,2,6,6-tetramethylhexahydropyridine-1-oxyl and 2,6-di-tert-amyl-1,4-cyclohexadienone inhibitors has been introduced into the polymer. The kinetics of the initiated thermo-destructive process of polyethylene oxidation in the presence and absence of stabilisers has been studied. A mechanism of joint action of stabilisers based on their interaction with radicals and the breakage of radical chains, as well as a mechanism for the regeneration of stabilisers, has been proposed.

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“…The foil intended for packaging must additionally meet various criteria, e.g. resistance to fragrance penetration from the packaging into a product, thickness below 52 μm, weldability in the temperature within 150-190° C range and the desired flexibility (elongation not lower than 70%) [1,6,7,10,12].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Auxilary Supplements Added in the Extrusion Process to Reduce the Friction of a Polymeric Foil

Białasz¹

2018

Adv. Sci. Technol. Res. J.

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The publication describes research on supplements that reduce foil friction in the case of sliding contacts. The supplements added to the LD-PE polymer material were based on the following blends: erucic acid amide, behenic acid amide, colloidal silica, potassium soap and talc. The work contains information on the types of processing additives and the resulting changes in properties in the surface layer of the product in the form of foil.

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Impact of Solar Radiation Effects on the Physicochemical Properties of Polyethylene (PE) Plastic Film

Cited by 18 publications

References 7 publications

Microplastics Generation: Onset of Fragmentation of Polyethylene Films in Marine Environment Mesocosms

Microplastics Generation: Onset of Fragmentation of Polyethylene Films in Marine Environment Mesocosms

Synergism of the action of some stabilisers against the destruction of polymer materials

The Influence of Auxilary Supplements Added in the Extrusion Process to Reduce the Friction of a Polymeric Foil

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