High electronic excitation induced modifications by 100MeV O7+ and 150MeV Ni11+ ions in Makrofol KG polycarbonate film

Kumar, Vijay; Sonkawade, R. G.; Dhaliwal, A.S.

doi:10.1016/j.nimb.2012.06.010

Cited by 43 publications

(6 citation statements)

References 54 publications

(62 reference statements)

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“…3 and 4, respectively. XRD pattern of pristine makrofol-KG and makrofol-N sample conforms to the XRD pattern reported by Kumar et al 19 The diffraction peaks occurred at 15.83°and 15.68°for makrofol-KG and makrofol-N, respectively, and their positions remained unchanged after the polymer samples were irradiated with gamma rays; it indicates that the lattice parameters of the polymers remain intact. The peak width (in the form of full width at half maximum, FWHM) increased and the peak intensity decreased in the case of makrofol-KG PC with the increase in gamma dose, indicating the increase in amorphous nature; but the opposite effect (a decrease in the value of FWHM and an increase in peak intensity) was observed in the case of makrofol-N polymer.…”

Section: X-ray Diffraction Studiessupporting

confidence: 88%

Gamma Radiation Induced Modifications on Physicochemical Properties of Makrofol (KG and N) Polycarbonate

et al. 2015

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Makrofol (KG and N) polycarbonates (PCs) are the most versatile solid-state nuclear track detectors. These polymers were exposed to gamma radiation of doses ranging from 250 to 1000 kGy. The pristine and exposed samples were characterized by X-ray diffraction (XRD), UV-vis spectrophotometry, and Fourier transform infrared spectrophotometry for the structural, optical, and chemical studies, respectively. The XRD studies showed that crystallite size for exposed samples of makrofol-KG PC decreased from 64.7 to 57.9Å and for makrofol-N PC it increased from 19.1 to 21.1Å. The band gap energy decreased from 4.40 to 4.07 eV for makrofol-KG and from 4.26 to 3.83 eV for makrofol-N after the gamma exposure. The number of carbon atoms per conjugation length as obtained from UV-vis studies was increased in both cases. The activation energy showed fluctuations for exposed samples of both polymers. The intensity of various absorption bands of the infrared spectra decreased at some doses for both the PCs, indicating the change in the chemical properties of the exposed samples. C 2015 Wiley Periodicals, Inc. Adv Polym Technol 2015, 34, 21510; View this article online at wileyonlinelibrary.com.

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Section: X-ray Diffraction Studiessupporting

confidence: 88%

Gamma Radiation Induced Modifications on Physicochemical Properties of Makrofol (KG and N) Polycarbonate

et al. 2015

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“…For immobilization of BR on the polycarbonate surface, the modification should be done. So far different modifications have been done (Abenojar et al 2009;Asad Ali et al 2010;Baumann et al 2013;Carosio et al 2013;Dehaye et al 2003;Gao et al 2013;Goyal et al 2012;Heymans 1997;Iwata et al 2003;Jackeray et al 2011;Jain et al 2012;Jang et al 2014a, b;Keil et al 1998;Khan et al 2006;Kim and Masuoka 2009;Kumar et al 2003Kumar et al , 2006Kumar et al , 2012Lub et al 1988;Motaung et al 2013;Resta et al 2013;Rodríguez et al 2002;Saarikoski et al 2009;Singh et al 2007;Srivastava et al 2002;Sun et al 2003;van der Wel et al 1993;Verkuijlen et al 2014;Wang et al 2000;Zajíčková et al 2001;Zhou and Osby 2010). In the present study we try to immobilize bacteriorhodopsin on polycarbonate surface by modifying of polycarbonate functional groups in two ways.…”

Section: Introductionmentioning

confidence: 94%

Assay of bacteriorhodopsin stability on polycarbonate surface by using of FTIR-ATR: a model of disk-based bioassays

Molaeirad

Asl

Khayati

et al. 2015

J Bioenerg Biomembr

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Bacteriorhodopsin (BR) is a transmembrane protein which able to transport protons through cell membrane and thus converting solar energy to electrical energy. Up to now different strategies have been used to immobilize BR. In the present study the BR has been immobilized on polycarbonate surface with two different methods. The functional groups of polycarbonate were modified in two ways (sulfuric acid, PDAC and HNO3) and then the BR was immobilized on two different modified polycarbonate surfaces. The modified surfaces were characterized by ATR-FTIR and AFM techniques. Afterward the activity of bounded BR to two different modified polycarbonate surfaces was measured. Our results show that BR bounded to modified polycarbonate surface with HNO3 (nitrated polycarbonate) has higher activity in comparison to modified with sulfuric acid (electrostatically bounded BR). Also the activities of both types of Bounded BR after 10 days were measured. The results showed that unlike electrostatically bounded BR, bounding BR to nitrated polycarbonate keeps its activity after 10 days. In conclusion, nitrated polycarbonate surface is a suitable candidate due to immobilizing BR in order to manufacture of BioCDs.

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“…The mechanisms involved in the formation of ion tracks have been explained by several models. The two wellrecognized physical models are the Coulomb explosion and thermal spike models [18]. Fleischer et al [19] proposed the first model of the Coulomb explosion for the formation of tracks in solids.…”

Section: Topographical Analysismentioning

confidence: 99%

Surface topographical and structural analysis of Ag+-implanted polymethylmethacrylate

Arif

Rafique

Saleemi

et al. 2016

Nuclear Instruments and Methods in Physics Research Section B:

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High electronic excitation induced modifications by 100MeV O7+ and 150MeV Ni11+ ions in Makrofol KG polycarbonate film

Cited by 43 publications

References 54 publications

Gamma Radiation Induced Modifications on Physicochemical Properties of Makrofol (KG and N) Polycarbonate

Gamma Radiation Induced Modifications on Physicochemical Properties of Makrofol (KG and N) Polycarbonate

Assay of bacteriorhodopsin stability on polycarbonate surface by using of FTIR-ATR: a model of disk-based bioassays

Surface topographical and structural analysis of Ag+-implanted polymethylmethacrylate

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