Chemical Characterization of the Long-Term Ageing of Nitrogen-Rich Plasma Polymer Films under Various Ambient Conditions

2013 ◽  
Vol 10 (4) ◽  
pp. 388-395 ◽  
Author(s):  
Pierre-Luc Girard-Lauriault ◽  
Paul M. Dietrich ◽  
Thomas Gross ◽  
Thomas Wirth ◽  
Wolfgang E. S. Unger
Keyword(s):  
Polymer Films ◽  
Chemical Characterization ◽  
Plasma Polymer ◽  
Ambient Conditions

Physico-Chemical Characterization of Methyl Isobutyrate-based Plasma Polymer Films

2011 ◽  
Vol 8 (2) ◽  
pp. 127-137 ◽  
Author(s):  
Laurent Denis ◽  
Fabian Renaux ◽  
Damien Cossement ◽  
Carla Bittencourt ◽  
Nunzio Tuccitto ◽  
...  
Keyword(s):  
Polymer Films ◽  
Chemical Characterization ◽  
Plasma Polymer ◽  
Physico Chemical

Classification and characterization of atmospheric VOCs based on sorption/desorption behaviors of plasma polymer films

2007 ◽  
Vol 124 (1) ◽  
pp. 53-61 ◽  
Author(s):  
Iwao Sugimoto ◽  
Toshihiko Nagaoka ◽  
Michiko Seyama ◽  
Masayuki Nakamura ◽  
Kazuhiko Takahashi
Keyword(s):  
Polymer Films ◽  
Plasma Polymer

scholarly journals Material Characterization of Magnetorheological Elastomers with Corroded Carbonyl Iron Particles: Morphological Images and Field-dependent Viscoelastic Properties

2019 ◽  
Vol 20 (13) ◽  
pp. 3311 ◽  
Author(s):  
Siti Aishah Binti Abdul Aziz ◽  
Saiful Amri Mazlan ◽  
Nur Azmah Nordin ◽  
Nor Azlin Nazira Abd Rahman ◽  
U Ubaidillah ◽  
...  
Keyword(s):  
Carbonyl Iron ◽  
Matrix Material ◽  
Rheological Characteristics ◽  
Iron Particles ◽  
Ambient Conditions ◽  
X Ray ◽  
Field Dependent ◽  
Mr Effect

High temperatures and humidity could alter the field-dependent rheological properties of MR materials. These environmental phenomena may accelerate the deterioration processes that will affect the long-term rheological reliability of MR materials such as MR elastomer (MRE). This study therefore attempts to investigate the field-dependent rheological characteristics of MRE with corroded carbonyl iron particles (CIPs). The corroded CIPs were treated with hydrochloric acid (HCl) as a way of providing realistic environments in gauging the CIPs reaction towards the ambient conditions. The corroded CIPs along with silicone rubber as a matrix material were used in the fabrication of the MRE samples. To observe the effect of HCl treatment on the CIPs, the morphological observations of MREs with non-corroded and corroded CIPs were investigated via field emission scanning electron microscopy (FESEM), energy-dispersive x-ray spectroscopy (EDX) and x-ray diffractometer (XRD). In addition, the magnetic properties were examined through the vibrating sample magnetometer (VSM), while the field-dependent rheological characteristics such as the storage modulus of MRE with the corroded CIPs were also tested and compared with the non-corroded CIPs. The results showed that the corroded CIPs possessed hydrangea-like structures. In the meantime, it was identified that a sudden reduction of up to 114% of the field-dependent MR effect of MRE with the corroded CIPs was observed as a result of the weakened interfacial bonding between the CIPs and the silicon in the outer layers of the CIPs structure.

Multivariate characterization of ultra-thin nanofunctional plasma polymer films using ToF-SIMS analysis

2004 ◽  
Vol 36 (8) ◽  
pp. 1114-1118 ◽  
Author(s):  
M. von Gradowski ◽  
M. Wahl ◽  
R. Förch ◽  
H. Hilgers
Keyword(s):  
Polymer Films ◽  
Plasma Polymer ◽  
Tof Sims ◽  
Sims Analysis

scholarly journals Chemical characterization of faecal sludge in the Kumasi metropolis, Ghana

2017 ◽  
Vol 1 ◽  
pp. 12 ◽  
Author(s):  
Ato Fanyin-Martin ◽  
Wilson Tamakloe ◽  
Edward Antwi ◽  
Johannes Ami ◽  
Emmanuel Awarikabey ◽  
...  
Keyword(s):  
Phosphorus Content ◽  
Oxygen Demand ◽  
Chemical Characterization ◽  
Total Solids ◽  
Typical Treatment ◽  
End Use ◽  
Solids Content ◽  
Faecal Sludge

Background: Faecal sludge (FS) represents a huge resource, which when tapped and made use properly can be of great benefit to many. However, the key to tapping this resource lies in proper characterisation, in order to make known the constituents and thereby determine the end-use. Methods: Three sources of FS from 43 communities in the Kumasi metropolis of Ghana were characterised in terms of their total solids content, chemical oxygen demand (COD), pH, nitrogen, phosphorous and lipid contents. FS from pit latrines, public septage and private septage were analysed. Results: On average, lipid content was found to be in the range of 8.82 – 9.66% of dry FS depending on the source of FS. Total solids were between 0.79 and 4.68%, while the COD was between 9495 and 45611mg/L. Phosphorus content was in the range of 137 – 520mg/L, while nitrogen was 649 – 4479mg/L. Most FS samples were generally alkaline in nature. Conclusions: These results are amongst the first long-term characterization efforts for FS in terms of conventional and non-conventional characteristics, tailored towards typical treatment and novel resource recovery options, respectively.

scholarly journals Carbon monoxide measurements onboard the CARIBIC passenger aircraft using UV resonance fluorescence

2012 ◽  
Vol 5 (7) ◽  
pp. 1753-1760 ◽  
Author(s):  
D. Scharffe ◽  
F. Slemr ◽  
C. A. M. Brenninkmeijer ◽  
A. Zahn
Keyword(s):  
Chemical Characterization ◽  
Atmospheric Composition ◽  
Quality Data ◽  
Integration Time ◽  
Resonance Fluorescence ◽  
Air Masses ◽  
Passenger Aircraft ◽  
Instrument Reliability

Abstract. Goal of the project CARIBIC (Civil Aircraft for the Regular Investigation of the atmosphere Based on an Instrumented Container) is to carry out regular and detailed observations of atmospheric composition (particles and gases) at cruising altitudes of passenger aircraft, i.e. at 9–12 km. Continuous, fast measurement of CO is indispensable for the chemical characterization of encountered air masses, for the detection of plumes of polluted air and for studying troposphere-stratosphere transport. CO is measured by a commercial resonance fluorescence UV instrument modified for the use onboard passenger aircraft. Modifications were necessary to optimize the instrument reliability allowing unattended operation for several days. The instrument has a precision of 1–2 ppbv at an integration time of 1 s. The response time to reach 63.2% signal strength is 2 s. We describe the modifications of the instrument, the experiences made during its operation since December 2004, the quality control of CO measurements onboard CARIBIC, and suggest a regular service routine that guarantees long-term high-quality data.

scholarly journals Mechanical properties of plasma polymer films: a review

2021 ◽  
Vol 3 (6) ◽  
Author(s):  
Jamerson Carneiro de Oliveira ◽  
Aissam Airoudj ◽  
Philippe Kunemann ◽  
Florence Bally-Le Gall ◽  
Vincent Roucoules
Keyword(s):  
Mechanical Properties ◽  
Polymer Films ◽  
Chemical Properties ◽  
Plasma Polymer ◽  
List Type ◽  
Physical And Chemical Properties ◽  
Plasma Polymers ◽  
Physical And Chemical ◽  
And Chemical Properties

Abstract Plasma polymers are micro-, or more commonly, nano-sized coatings that can be deposited on a variety of substrates through different approaches. The versatility of these polymers is incremented by the possibility to use other precursors than conventional polymerization reactions and by potential changes in the polymerization mechanisms according to the intrinsic physical and chemical properties of the plasma. That flexibility offers a fruitful ground to a great range of scientific and engineering fields, but it also brings many challenges for universalization of empirical observations. In this review, the use of different precursors, substrates and changes in plasma external parameters were evaluated as common, but not necessarily ideal nor exhaustive, variables for the analysis of mechanical properties of plasma polymer films. The commonly reported trends are complemented with the exceptions, and a variety of hypothesis drawn by the empirical observations are shown. The techniques and methods used for determining the mechanical properties of plasma polymers, the effect of post-treatments on them and some applications are evaluated. Finally, a general conclusion highlighting the challenges of the field is provided. Article highlights The mechanical properties of plasma polymers are evaluated as a function of selected parameters. The techniques of characterization of mechanical properties of plasma polymers are summarized. A discussion of future and current demands for the analysis of mechanical properties of plasma polymers is done.

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