Photoluminescence emission spectra of Makrofol® DE 1-1 upon irradiation with ultraviolet radiation

Ghazaly, M. El; Aydarous, Abdulkadir

doi:10.1016/j.rinp.2016.09.008

Cited by 11 publications

(7 citation statements)

References 12 publications

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“…The XRD scans of the pristine and exposed samples, scanned in the 2 array 10-30, are displayed in Fig. (1).…”

Section: Xrd Analysismentioning

confidence: 99%

“…One of these is the used Mak VLG 7-1 which was fabricated to be used in the applications which require thermoforming. It is an amorphous polymer that possesses excellent properties that allowed it to be brilliant applicant in dosimetry [1][2][3][4]. The properties of Mak were found to be dependent on the fabrication environments.…”

Section: Introductionmentioning

confidence: 99%

“…The properties of Mak were found to be dependent on the fabrication environments. Therefore, its characteristics change due to the radiations exposure [1]. One of the distinctive properties of Mak is the existence of carbonyl group which degrades by the act of minor dosages of radiation [5].…”

Section: Introductionmentioning

confidence: 99%

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Effect of GaAs pulsed laser on the structure and optical characterization of Makrofol VLG 7-1

Bahareth

2022

Arab Journal of Nuclear Sciences and Applications

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Samples ofMakrofol films were exposed to different laser fluences (2-18 J/cm 2 ). X-ray diffraction (XRD) and ultraviolet spectroscopy (UVs) techniques were used to explore the resultant effect of laser radiation on the structure and optical characteristics of the Makrofol polymer. The change of refractive index (n) and the optical band gap (Eg) with the laser fluence was interpreted. A reduction in the Eg values (3.08-2.54 electron volt) was observed when raising the laser fluence up to 18 J/cm 2 . This was accompanied by an increase in refractive index from 2.376 to 2.533. This was attributed to the prevalence of crosslinking that damaged the crystalline portion in the Makrofol polymer. The crosslinking created color centers that induced differences in color between the exposed films and the uncolored pristine Makrofol film. The color difference was significant as the values of E were greater than 5. This optimized the Makrofol polymer to be used in dosimetric applications.

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“…The XRD scans of the pristine and exposed samples, scanned in the 2 array 10-30, are displayed in Fig. (1).…”

Section: Xrd Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of GaAs pulsed laser on the structure and optical characterization of Makrofol VLG 7-1

Bahareth

2022

Arab Journal of Nuclear Sciences and Applications

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“…One of those is the used Makrofol PCVM that was manufactured for the use in the dosimetry. It is an amorphous polymer that possesses excellent properties that permitted it to be intense applicant in dosimetry [7][8][9][10]. The properties of Makrofol are dependent on the manufacture environments factors.…”

Section: Introductionmentioning

confidence: 99%

“…The properties of Makrofol are dependent on the manufacture environments factors. Consequently, its characteristics change due to the radiations exposure [7]. The existence of carbonyl group represents one of the characteristic properties of Makofol as it degrades by the action of small doses of radiation [11].…”

Section: Introductionmentioning

confidence: 99%

Radiation Induced Changes in Makrofol PCVM Polycarbonate

Bahareth¹

2022

J Miner Sci Materials

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Makrofol PCVM is a sort of Makrofol polycarbonate solid state nuclear track detector. It is worth mentioning that this paper is almost the first one that deals with the modification of the optical properties of this type of Makrofol under the effect of laser radiation. Samples from Makrofol PCVM were exposed to infrared pulsed laser with different fluences ranging from 15 to 125 J/cm2 . UV spectroscopic technique was used to obtain knowledge about the optical parameters that describe the samples under study. The changes of Urbach energy (Eu ), optical band gap (Eg ) and refractive index (n) with the laser fluence were investigated. Both Eu and n increased with increasing the fluence up to 125 J/cm2 , associated with a decrease of Eg values. These trends were assigned to the predominance of chain crosslinking that damaged the crystalline portion in the Makrofol polymer. Additionally, we used the CIE technique to calculate the color differences between the noncoloured pristine and the irradiated samples. The crosslinking created color centers that produced color difference between the exposed films and the uncolored pristine Makrofol film. The color difference was significant as the values of ΔE were greater than 5. This optimized the Makrofol polymer to be used in dosimetric applications.

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Optical and Color Modification in Polycarbonate/ZnS-NiO Nanocomposite Films Due to Laser Exposure

Nouh,

Mahrous,

AlSomali

et al. 2023

J Russ Laser Res

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Photoluminescence emission spectra of Makrofol® DE 1-1 upon irradiation with ultraviolet radiation

Cited by 11 publications

References 12 publications

Effect of GaAs pulsed laser on the structure and optical characterization of Makrofol VLG 7-1

Effect of GaAs pulsed laser on the structure and optical characterization of Makrofol VLG 7-1

Radiation Induced Changes in Makrofol PCVM Polycarbonate

Optical and Color Modification in Polycarbonate/ZnS-NiO Nanocomposite Films Due to Laser Exposure

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