Ion flux and deposition rate measurements in the RF continuous wave plasma polymerisation of acrylic acid

Beck, Alison J.; Leeson, Alistair M.; Short, Robert D.; FRANCE, RICHARD; Goodyear, A.; Braithwaite, Nicholas

doi:10.1039/a801778f

Cited by 19 publications

(19 citation statements)

References 4 publications

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“…These latter groups are most likely the result of different fragmentation and rearrangement processes occurring in the plasma phase, since the monomer only contains carbon atoms involved in C-C, C-H and O-C=O bonds. These degradation processes are more pronounced at low monomer concentrations and high discharge powers due to a higher amount of energy available per monomer molecule and a higher positive ion flux attacking the surface [49], as stated before in the section 'FTIR Results'. These XPS results are in accordance with the FTIR results described the section 'FTIR Results', which also suggested the presence of less carboxylic acid groups at low monomer concentration and at high discharge power.…”

Section: Xps Resultsmentioning

confidence: 89%

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Deposition of Polyacrylic Acid Films by Means of an Atmospheric Pressure Dielectric Barrier Discharge

Morent

Geyter

Vlierberghe

et al. 2009

Plasma Chem Plasma Process

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The present work describes the plasma polymerisation of acrylic acid at atmospheric pressure. The influence of two operating parameters (monomer concentration and discharge power) on the properties of the deposited films is investigated. Results show that at a monomer concentration of 2.5 ppm and a discharge power of 9.5 W, the monomer is only slightly fragmented leading to a high amount of carboxylic acid groups on the deposited films. In contrast, when monomer concentration is decreased or discharge power increased, the incidence of monomer fragmentation processes is higher, leading to a lower amount of carboxylic acid groups on the films. This behaviour can be explained by a higher energy amount available per monomer molecule at low monomer concentrations and high discharge powers and a higher flux of positive ions attacking the surface at high discharge powers. Taking into account these results, it can be concluded that the deposition parameters should be carefully selected in order to preserve the stability of the monomer and thus obtain coatings with high carboxylic acid densities

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Section: Xps Resultsmentioning

confidence: 89%

“…At the same time, an influence of the flux of positive ions attacking the surface in the half period of the DBD when the sample is under negative potential should be taken into account. This positive ion flux increases with increasing discharge power and can also result in an intensification of the fragmentation process [49].…”

Section: Ftir Resultsmentioning

confidence: 99%

Deposition of Polyacrylic Acid Films by Means of an Atmospheric Pressure Dielectric Barrier Discharge

Morent

Geyter

Vlierberghe

et al. 2009

Plasma Chem Plasma Process

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show abstract

“…The plasma assisted deposition of acrylic acid, acetic acid, propionic acid and their derivatives has led to the synthesis of surfaces with high densities of surface acid groups 10,53–64. Acid‐rich surfaces have been shown to lead to improved adhesion of polymeric materials to metals and metal oxide surfaces.…”

Section: Properties Of Thin Plasma Polymer Filmsmentioning

confidence: 99%

Soft Plasma Treated Surfaces: Tailoring of Structure and Properties for Biomaterial Applications

Förch

Zhang

Knoll

2005

Plasma Processes & Polymers

204

183

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Summary: This paper aims to discuss and review developments in plasma surface modification techniques which have been seen over the past few years, with particular emphasis on low energy or soft plasma assisted surface polymerisation processes. While early work focussed mainly on protective coatings and surface activation, the advancements in microtechnology in the 1980s followed by those in nanotechnology in the 1990s and 2000s have resulted in new challenges for surface processing and surface modification processes. The latest advancements in plasma polymer chemistry have shown tremendous potential for the synthesis of reasonably well defined molecular structures with a high retention of functional groups. Some of the latest achievements and newest insights into the behaviour of such deposits in a liquid environment will be discussed, with a particular focus on bio‐nanotechnological applications. Utilising novel approaches in surface and interface analysis, it will be shown that plasma polymers can be tailored to have considerable elasticity with reversible swelling characteristics, offering a three‐dimensional interface for biomolecular immobilisation procedures in a liquid environment.

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“…[4,7,23] The influence of both plasma-chemical (gas phase) and physical (ioninduced) effects have been discussed in order to explain this finding. [24][25][26] Considering the enormous difficulties associated with the application of microscopic kinetics to plasma chemistry, a coarser method, macroscopic kinetics, is used in this work to examine the deposition of a-C:H(O) coatings from CO 2 /C 2 H 4 RF discharges. In this approach, the deposition rate is measured as a function of the macroscopic reaction parameter power input per unit of gas flow, W/F.…”

Section: Introductionmentioning

confidence: 99%

Growth Mechanism of Oxygen-Containing Functional Plasma Polymers

Hegemann

Körner

Albrecht

et al. 2010

Plasma Processes Polym.

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Ion flux and deposition rate measurements in the RF continuous wave plasma polymerisation of acrylic acid

Cited by 19 publications

References 4 publications

Deposition of Polyacrylic Acid Films by Means of an Atmospheric Pressure Dielectric Barrier Discharge

Deposition of Polyacrylic Acid Films by Means of an Atmospheric Pressure Dielectric Barrier Discharge

Soft Plasma Treated Surfaces: Tailoring of Structure and Properties for Biomaterial Applications

Growth Mechanism of Oxygen-Containing Functional Plasma Polymers

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