100MeV Ag7+ ion induced physicochemical changes in isotactic polypropylene

Mathakari, N.L.; Kanjilal, D.; Bhoraskar, V.N.; Dhole, S.D.

doi:10.1016/j.nimb.2007.10.039

Cited by 7 publications

(10 citation statements)

References 28 publications

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“…Especially the (110) and (040) peaks show significant intensity variations. Similar effects were observed by Mathakari et al, 16 and they observed the increase in intensity of the (110) peak and explained that this intensity variation could be due to the scissoring of polymeric chains that displace the molecules from amorphous to the crystalline zones due to their extra mobility. As a result, the crystalline zone may enrich in size, resulting in an increase in the crystalline nature.…”

Section: X-ray Diffraction Studiessupporting

confidence: 84%

“…However, Singh and Singh 15 had reported 51% fall in the value of band gap energy of nickel ion irradiated PP. Similarly, Mathakari et al 16 observed 68% fall in the band gap energy of their 100 MeV Ag 7+ irradiated PP. The gamma exposure shows significant fall in the band gap values as compared to ion irradiations.…”

Section: Uv-vis Studiesmentioning

confidence: 75%

“…[12][13][14] A few studies are available on high-energy Swift heavy ions (SHI) irradiation of PP. 2,15,16 Most of the above-discussed studies have focused on the degradation of PP after ion/radiation exposure. The formation of new chemical bands and modifications in optical and structural properties is not discussed so far.…”

mentioning

confidence: 99%

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Impact of Swift Heavy Ions and Gamma Radiation upon Optical, Structural, and Chemical Properties of Polypropylene Polymer Films

Gupta

Singh

et al. 2015

Adv Polym Technol

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ABSTRACT:The present work focuses on the effects of two different ions (70 MeV carbon and 50 MeV lithium) and gamma radiation upon the structural, optical, and chemical properties of 125-μm thick polypropylene (PP) polymer films. The different samples of PP were irradiated with ions to the fluences in the range 10 11 -10 13 ions/cm 2 and exposed to gamma radiation of doses in the range 100-1250 kGy. A comparative study is carried out upon different parameters of irradiated polymer samples such as crystallite size and band gap energy. The structural properties are effectively modified by the ions irradiation, whereas gamma exposure shows insignificant changes in this regard; however, gamma exposure is observed to be effective in gradually decreasing the band gap energy of the PP samples with an increase in the gamma dose. The formation of new chemical bands is observed in the ion-irradiated and gamma-exposed PP polymer samples. C 2015 Wiley Periodicals, Inc. Adv Polym Technol 2015; View this article online at wileyonlinelibrary.com.

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Section: X-ray Diffraction Studiessupporting

confidence: 84%

Section: Uv-vis Studiesmentioning

confidence: 75%

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Impact of Swift Heavy Ions and Gamma Radiation upon Optical, Structural, and Chemical Properties of Polypropylene Polymer Films

Gupta

Singh

et al. 2015

Adv Polym Technol

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“…It was observed that PP100 showed prominent peaks at 2θ = 14.1°, 16.8°, 18.6°, and 21.8°, which corresponds to the α-monoclinic form of polypropylene, and PLLA100 showed major peaks at 2θ = 16.7° and 19°. This has been reported in literature also [2,8]. After addition of PLLA into PP as in the case of PP80 and PP80C6, the spectra matched very closely to neat PP.…”

Section: X-ray Diffractionsupporting

confidence: 84%

“…due to its low cost and excellent physical, mechanical, and thermal properties [1,2]. But, after their usage period, it is carelessly discarded in open dumps, landfills, or as simple litter.…”

Section: Introductionmentioning

confidence: 99%

Physico-mechanical characterization and biodegradability behavior of polypropylene/poly(L-lactide) polymer blends

Jain

Madhu

Bhunia

et al. 2014

Journal of Polymer Engineering

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Partially biodegradable polymer films from the blends of polypropylene (PP) and poly(L-lactide) (PLLA) were prepared in an internal mixer by melt blending technique, with and without compatibilizer, maleic anhydride grafted polypropylene (MAPP), followed by compression molding. With regard to tensile properties, 80/20 (PP/ PLLA) and 80/20/6 (PP/PLLA/MAPP) were found as the optimum blends with best combination of the ingredients. Therefore, the blend samples, namely, PP80 (80% PP+20% PLLA) and PP80C6 (80% PP+20% PLLA+6 phr MAPP) were selected as 'optimized' blends and further characterized for their physical, chemical, morphological, and thermal properties. X-ray diffraction studies showed that neat PP and PP80C6 had the same crystallite size indicating compatibility between PP and PLLA due to MAPP. Fourier transform infrared spectroscopy and scanning electron microsopy investigations revealed that the two polymers were completely immiscible in absence of the compatibilizer. Bacterial biodegradation of the samples was performed by exposure to Pseudomonas stutzeri for 60 days and measured in terms of weight loss, optical density, and thermal stability of the samples before and after degradation. The results showed that 80/20 (PP/ PLLA) blends undergo considerable degradation. Reduction in thermal stability of the film samples was also observed through thermogravimetric analysis, which was useful in accelerating their biodegradation.

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Swift heavy ion induced modifications of luminescence and mechanical properties of polypropylene/ZnO nanocomposites

Maniks¹,

Grigorjeva²,

Zabels³

et al. 2014

Nuclear Instruments and Methods in Physics Research Section B:

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100MeV Ag7+ ion induced physicochemical changes in isotactic polypropylene

Cited by 7 publications

References 28 publications

Impact of Swift Heavy Ions and Gamma Radiation upon Optical, Structural, and Chemical Properties of Polypropylene Polymer Films

Impact of Swift Heavy Ions and Gamma Radiation upon Optical, Structural, and Chemical Properties of Polypropylene Polymer Films

Physico-mechanical characterization and biodegradability behavior of polypropylene/poly(L-lactide) polymer blends

Swift heavy ion induced modifications of luminescence and mechanical properties of polypropylene/ZnO nanocomposites

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