Ultraviolet Radiation and Polymers

Andrady, Anthony L.

doi:10.1007/978-0-387-69002-5_51

Cited by 16 publications

(7 citation statements)

References 117 publications

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“…Since half of the polymers produced today are for exterior use, the different photodegradation rates and mechanisms have been well investigated for various polymers as a function of type and concentration of the present chromophores 49–52. Existing literature categorizes the photostability of polyamides as moderate and comparable to polyurethanes 53. However, the complexities of the degradation processes complicate a prediction of the degradation rate for specific systems 54.…”

Section: Water Content Of Hydrogels Covering Roofsmentioning

confidence: 99%

Thermoresponsive Polymer Induced Sweating Surfaces as an Efficient Way to Passively Cool Buildings

et al. 2012

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Section: Water Content Of Hydrogels Covering Roofsmentioning

confidence: 99%

Thermoresponsive Polymer Induced Sweating Surfaces as an Efficient Way to Passively Cool Buildings

et al. 2012

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“…Of mainly practical relevance for example is the loss of packaging integrity on the basis of reduced strength or extensibility, changes in impact strength or cracking as well as discoloration (Andrady, 2007). Additionally, the alteration of the mass transfer property permeation, migration and scalping can be highlighted (Guillard et al, 2010).…”

Section: Prerequisites Of In-package Application Of Pulsed Lightmentioning

confidence: 99%

Post-packaging application of pulsed light for microbial decontamination of solid foods: A review

Heinrich

Zunabovic

Bergmair

et al. 2015

Innovative Food Science & Emerging Technologies

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“…The photodegradation of polymer resins and its contribution to discoloration (yellowing and darkening) has been widely studied [ 34 , 35 , 36 , 37 , 38 ], while only recently, the fading of organic pigments has been evaluated in conservation science, focusing mainly on the identification of the faded organic pigments in historical plastic objects [ 39 , 40 , 41 ]. Although few key research studies from the polymer science community discussed the degradation of pigmented polymers [ 42 , 43 , 44 ], they were not comprehensive enough in describing the photo-fading mechanisms of the organic pigments.…”

Section: Introductionmentioning

confidence: 99%

Discoloration of Historical Plastic Objects: New Insight into the Degradation of β-Naphthol Pigment Lakes

et al. 2021

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Light is a determining factor in the discoloration of plastics, and photodegradation processes can affect the molecular structures of both the polymer and colorants. Limited studies focused on the discoloration of heritage plastics in conservation science. This work investigated the discoloration of red historical polyethylene (PE) objects colored with PR 48:2 and PR 53:1. High-density and low-density PE reference polymers, neat pigment powders, and historical samples were assessed before and after accelerated photoaging. The applied methodology provided insight into the individual light-susceptibility of polyethylenes, organic pigment lakes, and their combined effect in the photoaging of historical plastic formulations. After light exposure, both PE references and historical samples yellowed, PR53:1 faded, and PR 48:2 darkened; however, both organic pigments faded severely in the historical samples. This highlights the role played by the plastic binder likely facilitating the pigment photofading. Fourier transform infrared spectroscopy and mass spectrometry techniques—EGA-MS, PY-GC/MS, and TD-GC/MS—were successfully employed for characterizing the plastic formulations and degradation. The identification of phthalic compounds in both aged β-naphthol powders opens new venues for studies on their degradation. This work’s approach and analytical methods in studying the discoloration of historical plastics are novel, proving their efficacy, reliability, and potentiality.

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Ultraviolet Radiation and Polymers

Cited by 16 publications

References 117 publications

Thermoresponsive Polymer Induced Sweating Surfaces as an Efficient Way to Passively Cool Buildings

Thermoresponsive Polymer Induced Sweating Surfaces as an Efficient Way to Passively Cool Buildings

Post-packaging application of pulsed light for microbial decontamination of solid foods: A review

Discoloration of Historical Plastic Objects: New Insight into the Degradation of β-Naphthol Pigment Lakes

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