Views on Macroscopic Kinetics of Plasma Polymerization: Acrylic Acid Revisited

Sanden, M.C.M. van de

doi:10.1002/ppap.201000034

Cited by 15 publications

(16 citation statements)

References 9 publications

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“…The proportionality factor between the microscopic and the macroscopic approach thus comprises the reaction rate constants k which sensitively depend on T e and thus p . Further considerations on this relation could bring the current debate about macroscopic kinetics forward 12…”

Section: Introductionmentioning

confidence: 99%

Macroscopic Approach to Plasma Polymerization Using the Concept of Energy Density

Hegemann

Schütz

Körner

2011

Plasma Processes & Polymers

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The film growth and the properties of plasma polymers are determined by gas phase and surface reactions. In order to gain more insights and to optimize plasma polymerization processes, some assumptions can be made that allow a macroscopic approach. Therefore, a concept was developed based on the energy input both into the gas phase (plasma) and during film growth (surface) that helps to distinguish between predominating gas phase or surface processes. Different experimental series using gas mixtures of C2H4 with CO2 or N2/H2 were performed at different power inputs W and gas flow rates F. Thereby, the same range of specific energy input W/F can be maintained at different ion bombardment to the substrate. The results indicate that changes in film growth were initiated by plasma chemical processes for CO2/C2H4 discharges (scavenger effects), while the obtained drop in deposition rate at high energy input values for N2/H2/C2H4 is caused by the energy dissipated in the film during growth pointing towards a threshold energy for chemical sputtering.

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Section: Introductionmentioning

confidence: 99%

Macroscopic Approach to Plasma Polymerization Using the Concept of Energy Density

Hegemann

Schütz

Körner

2011

Plasma Processes & Polymers

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“…van de Sanden pointed out that interpreting the parameter W/F in the quasi‐Arrhenius equation as a temperature related to the molecule average energy is misleading, as in non‐equilibrium plasmas the power input is mostly consumed by the electrons while the gas temperature usually remains close to room temperature. Moreover, the average electron energy is usually too low to initiate the dissociation of the monomer molecules, which is only due to a high‐energy tail of the electron energy distribution . Nevertheless, the macroscopic kinetic approach can be considered the initial step towards a more rigorous kinetic study of a plasma‐deposition experiment .…”

Section: Resultsmentioning

confidence: 99%

Applying the Macroscopic Kinetic Approach to Plasma Polymerization to the Plasma Surface Modification of Micropowders: Attempt of Correlating Powder Flowability and Plasma Process Parameters

Giampietro

Roth

Gulas

et al. 2015

Plasma Processes & Polymers

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The flowability of micropowders can be improved by depositing a non‐continuous coating on the micropowder surface, which reduces the interparticle van der Waals forces causing cohesion of the native powder. Such a coating can be achieved via a plasma enhanced chemical vapor deposition in a tubular, inductively‐coupled RF glow‐discharge‐plasma reactor fed by plasma‐polymerizable gases. Here we systematically study the influence of user‐set plasma parameters of feed gas flow rate and plasma power on the resulting powder flowability. We find a quasi‐Arrhenius relation between flowability factor and energy delivered per mass of monomer W/FM. These findings demonstrate that flowability measurements can be used to study the plasma polymerization processes and as a metric to assess surface coatings of powders that are otherwise difficult to characterize by standard metrologies.

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“…The specific energy per precursor molecule should always be related to the convective transport of the depositing species in order to connect the specific energy per precursor molecule to the functional (i.e. moisture barrier) film properties [48,49].…”

Section: Dynamically Deposited Filmsmentioning

confidence: 99%

The role of carrier gas flow in roll-to-roll AP-PECVD synthesized silica moisture barrier films

Meshkova

Elam

Starostin

et al. 2018

Surface and Coatings Technology

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Views on Macroscopic Kinetics of Plasma Polymerization: Acrylic Acid Revisited

Cited by 15 publications

References 9 publications

Macroscopic Approach to Plasma Polymerization Using the Concept of Energy Density

Macroscopic Approach to Plasma Polymerization Using the Concept of Energy Density

Applying the Macroscopic Kinetic Approach to Plasma Polymerization to the Plasma Surface Modification of Micropowders: Attempt of Correlating Powder Flowability and Plasma Process Parameters

The role of carrier gas flow in roll-to-roll AP-PECVD synthesized silica moisture barrier films

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