Monitoring the degradation of stabilization systems in polypropylene during accelerated aging tests by liquid chromatography combined with atmospheric pressure chemical ionization mass spectrometry

Beißmann, Susanne; Stiftinger, Martin; Grabmayer, Klemens; Wallner, Gernot M.; Nitsche, David; Buchberger, Wolfgang

doi:10.1016/j.polymdegradstab.2013.06.015

Cited by 80 publications

(52 citation statements)

References 23 publications

(10 reference statements)

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“…To examine the stabilizer consumption a validated HPLC approach using a water/acetonitrile mobile phase gradient was applied . A measurement uncertainty of about 8% is given for the used HPLC device (1260 Infinity, Agilent Technologies, Santa Clara, CA) with a Kinetex C18 separation column (50 × 3 mm, 2.6 μm particle size) coupled to an UV‐detector at 200 nm.…”

Section: Methodological Approachmentioning

confidence: 99%

Hot air aging behavior of polypropylene random copolymers

Grabmann

Wallner

Maringer

et al. 2018

J of Applied Polymer Sci

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This article deals with the global aging behavior of three polypropylene random copolymer (PP-R) materials with varying primary structure and morphology. Hot air aging experiments at elevated temperatures from 95 to 135 C were carried out using micro-sized specimens with a thickness of 100 μm. Technological and analytical aging indicators were monitored for an exposure time of up to 750 days. Independent of comonomer type (ethylene vs. butylene) and morphology (α vs. β crystal form) a critical molar mass of 300 kg mol −1 was obtained. The consumption of antioxidants was slower for the β-nucleated PP-R grade with finer spherulitic structure. The β-grade outperformed the α-crystal PP-R grades resulting in about 20% higher time-to-embrittlement values.

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Section: Methodological Approachmentioning

confidence: 99%

Hot air aging behavior of polypropylene random copolymers

Grabmann

Wallner

Maringer

et al. 2018

J of Applied Polymer Sci

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“…The degradation of AO-13 proceeds stepwise via quinones [25,26] which can be well recognised using the bands at 1644 cm À1 and 1620 cm À1 (Fig. 9) being characteristic for conjugated C]C double bonds [27,28] and a,b-unsaturated ketone groups [29] respectively.…”

Section: Unaged Pp-r1 and Pp-r2mentioning

confidence: 90%

Monitoring the effect of chlorine on the ageing of polypropylene pipes by infrared microscopy

Damodaran¹,

Schuster²,

Rode³

et al. 2015

Polymer Degradation and Stability

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“…These are related to two issues: plastics in the environment, especially in the ocean, and emission of additives and their degradation products from the polymeric material into the environment [51–54], which might be unhealthy or may have some ecotoxic effects. The issue of plastic debris in the ocean has found considerable public attention and has been the focus of campaigns of many environmental organizations.…”

Section: Economic Benefits and Ecological Side Effectsmentioning

confidence: 99%

Geosynthetics in geoenvironmental engineering

Müller

Saathoff

2015

Science and Technology of Advanced Materials

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Geosynthetics are planar polymeric products, which are used in connection with soil, rock or other soil-like materials to fulfill various functions in geoenvironmental engineering. Geosynthetics are of ever-growing importance in the construction industry. Sealing of waste storage facilities to safely prevent the emission of wastewater, landfill gas and contaminated dust as well as the diffusion of pollutants into the environment and coastal protection against storms and floods and reconstruction after natural disaster are important fields of application. We will give an overview of the various geosynthetic products. Two examples of the material problems related to geosynthetics are discussed in detail: the effect of creep on the long-term performance of geocomposite drains and the numerical simulation of the interaction of soil with geogrids. Both issues are of importance for the use of these products in landfill capping systems. The various functions, which geosynthetics may fulfill in the protection of coastal lines, are illustrated by case studies. The geosynthetic market is evaluated and economical and environmental benefits, as well as environmental side effects related to the use of geosynthetics, are discussed.

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Monitoring the degradation of stabilization systems in polypropylene during accelerated aging tests by liquid chromatography combined with atmospheric pressure chemical ionization mass spectrometry

Cited by 80 publications

References 23 publications

Hot air aging behavior of polypropylene random copolymers

Hot air aging behavior of polypropylene random copolymers

Monitoring the effect of chlorine on the ageing of polypropylene pipes by infrared microscopy

Geosynthetics in geoenvironmental engineering

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