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Sapurina, Irina; Frolov, V. I.; Шабсельс, Б. М.; Stejskal, Jaroslav

doi:10.1023/a:1026050428908

Cited by 15 publications

(11 citation statements)

References 13 publications

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“…The coloration reflects the formation of Schiff base by the reaction of aniline with conjugated aldehyde groups present in the lignin that constitutes, along with cellulose, the bulk of the wood mass. The fraction of aniline consumed in this reaction, however, is extremely low and most of the aniline is available for the subsequent polymerization 10. The reaction mixture soon becomes blue, and then green, as PANI is produced.…”

Section: Resultsmentioning

confidence: 99%

“…Composites of PANI, PPy, and crosslinked cellulose with a conductivity level of 10 −4 –10 −2 S cm −1 have also been prepared 8, 9. So far, only a single paper reporting the preparation of PANI–wood composites has appeared in the literature 10. The present study extends the studies to the optimization of PANI–wood composite preparation, includes the PPy deposition for comparison, and introduces the assessment of the thermal stability of conductivity.…”

Section: Introductionmentioning

confidence: 90%

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Standardized evaluation and reporting of stent fractures in clinical trials of noncoronary devices

Jaff

Dake

Pompa

et al. 2007

Cathet Cardio Intervent

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 90%

Standardized evaluation and reporting of stent fractures in clinical trials of noncoronary devices

Jaff

Dake

Pompa

et al. 2007

Cathet Cardio Intervent

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show abstract

“…8,9 So far, only a single paper reporting the preparation of PANI-wood composites has appeared in the literature. 10 The present study extends the studies to the optimization of PANI-wood composite preparation, includes the PPy deposition for comparison, and introduces the assessment of the thermal stability of conductivity. Conducting polymers can serve as an adhesive for wood sawdust particles, and composites comprising both components could constitute useful construction materials.…”

Section: Introductionmentioning

confidence: 92%

“…The fraction of aniline consumed in this reaction, however, is extremely low and most of the aniline is available for the subsequent polymerization. 10 The reaction mixture soon becomes blue, and then green, as PANI is produced. In the case of pyrrole, no distinct coloration appears after mixing the reactants, and the mixture gradually becomes dark brown as the polymerization proceeds.…”

Section: Figurementioning

confidence: 99%

“…15 The thickness of the coating is typically 50 -400 nm, depending on reaction conditions. 10,18 It should be stressed that, during this process, the film of conducting polymer grows at the surface as the polymerization proceeds. 19 It is thus not formed as a result of a mere adsorption of the polymer produced in the surrounding liquid medium at the immersed surfaces.…”

Section: Figurementioning

confidence: 99%

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Electromagnetic radiation shielding by composites of conducting polymers and wood

Sapurina

Kazantseva

Ryvkina

et al. 2004

J of Applied Polymer Sci

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Polyaniline or polypyrrole composites with fir or oak wood have been prepared by in situ polymerization of the corresponding monomers in an aqueous suspension of wood sawdust. The percolation threshold of compressed coated particles is located below 5 wt % of the conducting component and, above this limit, the conductivity of most composites was higher than 10 Ϫ3 S cm Ϫ1 . The conductivity of composites containing ca 30 wt % of conducting polymer was of the order of 10 Ϫ1 S cm Ϫ1 , an order of magnitude lower than that of the corresponding homopolymers, polyaniline and polypyrrole. The conductivity stability has been tested at 175°C. The polypyrrole-based composites generally lasted for a longer time than pyrrole homopolymers, also on account of the improved mechanical integrity of the samples provided by the presence of wood.The reverse order was found with polyaniline composites. The dielectric properties of the composites were determined in the range of 100 MHz-3 GHz, indicating that thick layers of composite material, ϳ 100 mm, are needed for the screening of the electromagnetic radiation below -10 dB level in this frequency range. Nevertheless, considering the potential production cost of composites and their low weight, such composite materials could be of practical interest in the shielding of electromagnetic interference.

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25th Anniversary Article: Organic Photovoltaic Modules and Biopolymer Supercapacitors for Supply of Renewable Electricity: A Perspective from Africa

Inganäs

Admassie

2013

Advanced Materials

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The role of materials in civilization is well demonstrated over the centuries and millennia, as materials have come to serve as the classifier of stages of civilization. With the advent of materials science, this relation has become even more pronounced. The pivotal role of advanced materials in industrial economies has not yet been matched by the influence of advanced materials during the transition from agricultural to modern societies. The role of advanced materials in poverty eradication can be very large, in particular if new trajectories of social and economic development become possible. This is the topic of this essay, different in format from the traditional scientific review, as we try to encompass not only two infant technologies of solar energy conversion and storage by means of organic materials, but also the social conditions for introduction of the technologies. The development of organic-based photovoltaic energy conversion has been rapid, and promises to deliver new alternatives to well-established silicon photovoltaics. Our recent development of organic biopolymer composite electrodes opens avenues towards the use of renewable materials in the construction of wooden batteries or supercapacitors for charge storage. Combining these new elements may give different conditions for introduction of energy technology in areas now lacking electrical grids, but having sufficient solar energy inputs. These areas are found close to the equator, and include some of the poorest regions on earth.

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Cited by 15 publications

References 13 publications

Standardized evaluation and reporting of stent fractures in clinical trials of noncoronary devices

Standardized evaluation and reporting of stent fractures in clinical trials of noncoronary devices

Electromagnetic radiation shielding by composites of conducting polymers and wood

25th Anniversary Article: Organic Photovoltaic Modules and Biopolymer Supercapacitors for Supply of Renewable Electricity: A Perspective from Africa

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