Radiation-induced change of polyimide properties under high-fluence and high ion current density implantation

Popok, Vladimír; Azarko, I.I.; Хайбуллин, Р. И.; Stepanov, Alexey; Hnatowicz, V.; Macková, Anna; Prasalovich, S.

doi:10.1007/s00339-003-2166-9

Cited by 28 publications

(20 citation statements)

References 23 publications

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“…The conductivity of the 6FDA-APPS nanofibrous membrane (ca. 10 À3 S cm À1 ) was found to be reasonable when compared with reported conductivities of ionbeam-irradiated polyimide membranes with similar polymer structures (10 À2 -10 À4 S cm À1 ) 28 by considering the differences in the ion irradiation conditions. PSF showed the lowest conductivity, that is, the conductivity of the PSF nanofibrous membrane was still o10 À3 S cm À1 , even after Kr þ irradiation at an ion fluence of …”

Section: Electrical Conductivitysupporting

confidence: 70%

“…Meanwhile, ether and sulfone moieties in the PSF backbone may impede the continuity of the carbon clusters and subsequent restructuring after ion irradiation. 6FDA-APPS has both typical structures categorized for polyimide and PSF in its polymer backbone; therefore, it showed intermediate conductivity that was almost equivalent to the values reported for similar ion-beamirradiated membranes 28 and intermediate degrees of carbonization and graphitization, as shown by Raman spectroscopy and XPS results. Consequently, we conclude that the electrical conductivities of ionirradiated polymer nanofibers, except those of the atypical PAN nanofibers, are related to the polymer structure, and polymers bearing labile leaving groups and a flatter backbone without several functional groups that impede the continuity of carbon clusters are favorable for carbon nanofibers with higher electrical conductivity.…”

Section: Xps and Raman Spectroscopysupporting

confidence: 70%

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Carbon nanofibers prepared from electrospun polyimide, polysulfone and polyacrylonitrile nanofibers by ion-beam irradiation

Sode

Sato

Tanaka

et al. 2013

Polym J

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Novel electrical conductive carbon nanofibers were prepared by a combination of electrospinning and ion-beam irradiation techniques. Four types of polymer nanofibers, including polyimides (2,2 0 -bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride (6FDA)-2,2 0 -bis(4-aminophenyl) hexafluoropropane (6FAP) and 6FDA-Bis(4-(4-aminophenoxy)phenyl) sulfone (APPS)), polysulfone (PSF) and polyacrylonitrile, were prepared by the electrospinning method, which yielded fine nanofibers with diameters of B150 nm (except PSF) under optimized conditions. The obtained polymer nanofibrous membranes were irradiated with Kr þ using an ion implanter at various ion fluences to give carbonized nanofibers. The electrical conductivities of the carbon nanofibers increased with an increase in the ion fluence; the conductivity of the electrospun 6FDA-6FAP nanofibrous membrane reached up to ca. 10 À1 S cm À1 with 10 16 ion cm À2 of Kr þ . The influence of the starting polymers on the electrical conductivity of the carbon nanofibers was studied by Raman and X-ray photoelectron spectroscopy analyses.

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Section: Electrical Conductivitysupporting

confidence: 70%

Section: Xps and Raman Spectroscopysupporting

confidence: 70%

Carbon nanofibers prepared from electrospun polyimide, polysulfone and polyacrylonitrile nanofibers by ion-beam irradiation

Sode

Sato

Tanaka

et al. 2013

Polym J

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“…Ion implantation technology has been successfully applied to the modification of polymers for improving their surface properties, such as electrical resistance, and optical properties [12] [13]. The increase in the wear resistance of UHMWPE has been achieved by ion implantation [2] [14] [15].…”

Section: Introductionmentioning

confidence: 99%

Ion Radiation Detection Using Implanted Ultrahigh Molecular Weight Polyethylene Structures (UHMWPE)

El-Muraikhi¹

2019

MSA

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The effect of ion implantation, including Ar + ion with influences (1 × 10 13-10 15 ions/cm 2), on the electrical and optical properties of ultrahigh molecular weight polyethylene (UHMWPE) were investigated with particular emphasis placed on the sensor performance to be used in the field of radiation detection. The obtained results focusing on the effect of the different influences showed a significant change in the electrical conductivity, capacitance and loss tangent. The absorption spectra for UHMWPE samples were recorded and the values of the allowed direct and indirect optical energy gap (E opt) d , (E opt) in of UHMWPE and energies of the localized states for the virgin and implanted samples were calculated. We found that the optical energy gap values decreased as the radiation dose increased. The results can be explained on the basis of the ion beam radiation-induced damage in the linear chains of UHMWPE, with cross-linking generated after implantation. The observed changes in both the optical and the electrical properties suggest that the UHMWPE film may be considered as an effective material to achieve ionradiation detection at room temperature.

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“…Similar to the ion implantation process, the ion energies and incident dose are often cited as important variables which affect the surface properties. The importance of a high ion dose is that latent tracks (formed mainly by nuclear collisions of the incoming ion) overlaps at high fluence [108], providing highly "damaged" region and giving rise to a high concentration of defects [109]. The method in which the incident ion energy and ion dose are estimated are described here.…”

Section: Determination Of Ion Energies and Incident Ion Dose Ratementioning

confidence: 99%

“…It is in a biaxially oriented form, is a hard, stiff and strong material and has good gas barrier properties and good chemical resistance except to alkalis, which will hydrolyse it. o o -tocHjCHjO-i -\~j-l to [6,109,[149][150][151], N [8,27,129,152] and H [95,153,154]. In using a metal cathodic arc source, PHI technique is extended to metal PHI (MePIII) with a range of metals i.e.…”

Section: Introductionmentioning

confidence: 99%

Plasma immersion ion implantation on polymers

Sze¹

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2.1 MODIFICATION OF POLYMERS BY PIIID 11 2.1.1 Polymer structure 12 2.2 SURFACE COMPOSITION OF ION MODIFIED POLYMERS 13 2.3 ION-POLYMER INTERACTIONS 15 2.4 THERMAL SPIKES IN ION IMPLANTATION OF POLYMERS 18 2.5 ELECTRONIC TRANSPORT MECHANISM OF ION MODIFIED POLYMERS 23 2.6 PLASMA IMMERSION ION IMPLANTATION (PHI) 25 2.6.1 Description of the PHI system 28 111 ATTENTION: The Singapore Copyright Act applies to the use of this document. Nanyang Technological University Library 2.6.2 Plasma immersion ion implantation for insulating materials 2.6.2.1 Rise time and ion energy range in PHI 2.6.2.2 Sputtering process 2.6.2.3 Determination of ion energies and incident ion dose rate 2.6.2.4 Charging effects on an insulator's surface 2.6.2.5 Design of experimental setup for insulators 2.6.2.6 Pulse frequency and duration 2.7 CATHODIC ARC SOURCES 2.7.7 Filtered cathodic vacuum arc system 39 2.7.2 Metal cathodic arc source 42 2.8 SUMMARY 43 CHAPTER 3: CHARACTERIZATION TECHNIQUES 44 3.1 VISIBLE RAMAN SPECTROSCOPY 45 3.2 X-RAY PHOTOELECTRON SPECTROSCOPY (XPS) 46 3.3 SCANNING ELECTRON MICROSCOPY (SEM) 47 3.4 X-RAY DIFF ACTION (XRD) 48 3.5 SURFACE PROFILER 49 3.6 CONDUCTIVE ATOMIC FORCE MICROSCOPY (CAFM) 49 3.7 MECHANICAL TESTING 52

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Radiation-induced change of polyimide properties under high-fluence and high ion current density implantation

Cited by 28 publications

References 23 publications

Carbon nanofibers prepared from electrospun polyimide, polysulfone and polyacrylonitrile nanofibers by ion-beam irradiation

Carbon nanofibers prepared from electrospun polyimide, polysulfone and polyacrylonitrile nanofibers by ion-beam irradiation

Ion Radiation Detection Using Implanted Ultrahigh Molecular Weight Polyethylene Structures (UHMWPE)

Plasma immersion ion implantation on polymers

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