Plasma-induced thermoluminescence — a new method of investigating supramolecular architectures and temperature transitions in polymers and other solid surfaces

Калачев, А. А.; Lobanov, S.Yu.; Lebedeva, T. L.; Platè, N. A.

doi:10.1016/0169-4332(93)90445-h

Cited by 12 publications

(3 citation statements)

References 3 publications

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“…The decrease in PIL as a function of treatment duration has been reported for low-density polyethylene with various plasma-forming gases [42]. The behaviour of UVIL is more closely consistent with x-ray or γ -radiolysis treatments on polymers which are considered as polymer bulk characterization methods.…”

Section: Discussionsupporting

confidence: 70%

“…The behaviour of UVIL is more closely consistent with x-ray or γ -radiolysis treatments on polymers which are considered as polymer bulk characterization methods. There are some indications that PIL induces essentially surface modifications in the polymer, as usually reported [42,43]. PIL following long interaction treatments is characterized by a shift of the emitted light towards long wavelength [1] and by a decrease in magnitude.…”

Section: Discussionmentioning

confidence: 99%

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On the UV contribution to plasma-induced luminescence of polypropylene

Teyssèdre

Tiemblo

Massines

et al. 1996

J. Phys. D: Appl. Phys.

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Cold plasma treatments of polymers induce surface transformations through several mechanisms involving photons, charges, radicals and excited species produced in the discharge. We have isolated the UV interaction contribution to the total luminescence emitted by the polymer after plasma discharge. Spectral and time-resolved light analyses have shown that the emitted light is constituted of the same components as in plasma-induced luminescence, namely photoluminescence, chemiluminescence and charge-recombination contributions. The essential differences were found in the dependence of the emission upon the treatment time. The luminescence intensity following plasma interaction decreased for increasing treatment time, whereas the UV interaction led to increasing emission followed by a steady-state luminescence level. In addition, the spectral distribution after a long exposure to UV did not evolve in an irreversible fashion. Some features of the time-dependence of the total intensity have been explained on the bases of luminescence decay analyses following conventional photoluminescence excitation. Whereas plasma interaction induced strong surface transformations, UV probably acts through more selective processes such as initiation of decomposition of hydroperoxides.

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Section: Discussionsupporting

confidence: 70%

Section: Discussionmentioning

confidence: 99%

On the UV contribution to plasma-induced luminescence of polypropylene

Teyssèdre

Tiemblo

Massines

et al. 1996

J. Phys. D: Appl. Phys.

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“…The application of glow discharge plasma for activation of solid surface layers was proposed by Lipatov et al [11,12] and put forward by Nikol'skii et al as the technique for investigation of structural transitions in organic materials [13]. The PITL technique was used by many researchers [14][15][16][17][18][19]. Newly developed and patented research device Nanoluminograph [20, 21], whose action is based on thermoluminescence phenomenon, used in this work.…”

Section: Introductionmentioning

confidence: 99%

Molecular mobility in near-surface nano-layers of ultra-high molecular weight polyethylene as revealed by thermoluminescence activated by low temperature Ar plasma

Solov’eva,

Danilova,

Preobrazhenskii

et al. 2023

MTD

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Aiming at better understanding the properties of the near-surface nano-layers of UHMWPE reactorpowders (RP) used for manufacturing high-performance fibers by solvent-free processing, acomparative study of the molecular mobility in the nano-layers of two different UHMWPE RP andits change after compaction and sintering is carried out with the help of thermoluminescence method.The dependence of the intensity of light quanta emitted by heated samples (previously evacuated,cooled to 77 K, and activated by low-temperature argon plasma) on the heating temperature (glowcurves) is analyzed. The glow curves were recorded using a unique Nanoluminograph device, whichexists in a single copy at Ioffe Institute. It was found that all the glow curves observed had thecomplicate profiles, which evidenced the overlapping of a number of relaxation processes. The Fityksoftware was used for deconvolution the experimental curves into elementary peaks. The length ofthe so-called kinetic unit of motion (the mobility of which is defreezing in the temperature intervalof each elementary peak) was calculated. The influence of the behavior of the near-surface RPnano-layer during compaction/sintering on the achieved strength of the oriented final film threads isdemonstrated.

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Influence of Crystallization Conditions on Relaxation Properties of Polymer Near‐Surface Layers

Lebedev

Ivan’kova

Nashchekin

et al. 2012

Macromolecular Symposia

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Relaxation properties of polymer near‐surface layers were investigated with the help of thermoluminescent method using Nanoluminograph (PlasmaChem GMbH, Germany). The gel‐ and melt‐crystallized films from PE of different molecular weight were studied. The light sum of thermoluminescence in the temperature range of various relaxation transitions was compared. It is found that it is primarily controlled by the type of morphology forming during crystallization and the arrangement of the structural units on a surface. The glass transition temperature in near‐surface layers appeared to be lower that that in the bulk. Bulk glass transition temperature was determined by radiothermoluminescence, DMA and DSC techniques.

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Plasma-induced thermoluminescence — a new method of investigating supramolecular architectures and temperature transitions in polymers and other solid surfaces

Cited by 12 publications

References 3 publications

On the UV contribution to plasma-induced luminescence of polypropylene

On the UV contribution to plasma-induced luminescence of polypropylene

Molecular mobility in near-surface nano-layers of ultra-high molecular weight polyethylene as revealed by thermoluminescence activated by low temperature Ar plasma

Influence of Crystallization Conditions on Relaxation Properties of Polymer Near‐Surface Layers

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