Surface Modifications and Adhesion of Vulcanized SBR Rubber Treated With Rf Plasmas of Different Gases

Ortíz-Magán, Ana B.; Pastor-Blas, M. Mercedes; Martı́n-Martı́nez, José Miguel

doi:10.1080/00218460490477071

Cited by 27 publications

(21 citation statements)

References 15 publications

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“…The real oxidation of the polyurethane surface, expressed as the O/C ratio, increases from 0.11 for the untreated film up to values close to 0.38 for the different exposure times to nitrogen plasma followed by air exposure 23. The action of the nitrogen plasma promotes chain scission and formation of free radicals and instable species which act as insertion points when plasma‐treated samples are exposed to oxidizing conditions (air exposure); under these conditions, the oxygen and the water promote reactions with active species which allows the interlock of oxygen atoms on the film surface, thus contributing to improve wettability 12,19,24–27…”

Section: Resultsmentioning

confidence: 99%

Surface Modification of a Polyurethane Film by Low Pressure Nitrogen Plasma for Improved Adhesion to Polyethylene Foam for Automotive Industry Laminates

Sanchis

Calvo

Fenollar

et al. 2007

Plasma Process. Polym.

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A low pressure glow discharge nitrogen plasma has been used to modify wettability of a polyurethane film and, consequently, improve adhesion properties to polyolefin foam in order to obtain technical laminates for uses in automotive industry. A significant increase in surface wettability is achieved after the plasma treatment as observed by contact angle measurements. Surface changes have been studied by X‐ray photoelectron spectroscopy (insertion of polar groups) and atomic force microscopy (changes in surface roughness and topography). Laminates based on plasma‐treated polyurethane film and polyolefin foam show a considerable increase in the T‐peel strength of the adhesion joint; furthermore we can observe a slight ageing process under aggressive conditions (high temperature and relative humidity).

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Section: Resultsmentioning

confidence: 99%

Surface Modification of a Polyurethane Film by Low Pressure Nitrogen Plasma for Improved Adhesion to Polyethylene Foam for Automotive Industry Laminates

Sanchis

Calvo

Fenollar

et al. 2007

Plasma Process. Polym.

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“…As a result adhesion decreased [3,[20][21][22][23][24][25]. On the other hand, some studies in the literature dealing with the use of low pressure radiofrequency (RF) plasmas showed that the energetic environment of the plasma creates surface free radicals and also produces cleaning, ablation, crosslinking and chemical modifications on the rubber surface [1,[26][27][28][29][30][31][32][33][34][35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Influence of Rubber Formulation on Surface Modifications Produced by RF Plasma

Ortíz-Magán

Pastor-Blas

2010

Plasma Chem Plasma Process

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The effectiveness of nitrogen, oxygen and air Radio Frequency (RF) plasma treatments on two styrene-butadiene vulcanized rubbers with a different formulation has been studied. The presence of an antiadherent surface layer containing low-molecular weight ingredients (sulfur-rich vulcanization agents and wax) from SW (Sulfur-Wax) rubber formulation requires an extended plasma treatment capable of removing this surface layer. When the percentage of antiadherent moieties is reduced in ZS (Zinc Stearate) rubber formulation, shorter plasma treatment times are enough to modify rubber surface and increase its polarity by the creation of C-O and C=O polar groups that enhance adhesion towards a polyurethane adhesive. Air and oxygen plasma treatments are more aggressive than nitrogen plasma and therefore they are more effective in removing the antiadherent layer of the outermost rubber surface layer prior to oxidation of the rubber surface.

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“…On the other hand, some studies in the literature dealing with the use of low pressure radio-frequency (RF) plasmas showed that the energetic environment of the plasma creates surface free radicals, as well as produces cleaning, ablation, cross-linking and chemical modifications on the rubber surface [25][26][27][28][29], being these effects greatly affected by the gas used to generate the plasma [30][31][32][33]. However, in the above studies, the influence of the processing oils in the rubber formulation was not considered.…”

Section: Introductionmentioning

confidence: 99%

Migration of Processing Oils of Thermoplastic Rubber Treated with RF Plasma

Ortíz-Magán

Pastor-Blas

2008

Plasma Chem Plasma Process

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The surface modifications produced by a RF plasma treatment on a thermoplastic styrene-butadiene-styrene rubber-SBS-with a considerable amount of processing oils in its formulation (TRO) have been studied and compared to the modifications produced on an oil-free SBS rubber (TRF). The modifications produced by the plasmas on the rubber surface depended on the nature of the gas used to generate the plasma. Thus, argon plasma favored the migration of processing oils to the TRO rubber surface, producing a weak oily layer that prevented interaction of rubber with a polyurethane adhesive. On the other hand, oxygen and carbon dioxide plasmas produced important ablation of the rubber surface which resulted in a partial (CO 2 plasma) or total (O 2 plasma) removal of processing oils from the rubber surface and the creation of polar moieties that increased adhesion of the rubber surface towards a polyurethane adhesive.

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Surface Modifications and Adhesion of Vulcanized SBR Rubber Treated With Rf Plasmas of Different Gases

Cited by 27 publications

References 15 publications

Surface Modification of a Polyurethane Film by Low Pressure Nitrogen Plasma for Improved Adhesion to Polyethylene Foam for Automotive Industry Laminates

Surface Modification of a Polyurethane Film by Low Pressure Nitrogen Plasma for Improved Adhesion to Polyethylene Foam for Automotive Industry Laminates

Influence of Rubber Formulation on Surface Modifications Produced by RF Plasma

Migration of Processing Oils of Thermoplastic Rubber Treated with RF Plasma

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