The effect of plasticization by fatty acid amides on the scratch resistance of PMMA

Muhammad, Mansha; Gauthier, Christian; Gérard, Pierre; Schirrer, R.

doi:10.1016/j.wear.2010.12.089

Cited by 31 publications

(28 citation statements)

References 37 publications

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“…The EBS contribution to reducing friction and abrasion is well known. It was reported elsewhere that by using fatty acid amides up to 0.1 wt % a decreasing of friction coefficient of PMMA can be obtained, the bulk properties of PMMA being almost unaffected [14]. The scratch depth decreased in time and also the frontal material piled up decreased (75 nm for PMMA-EBS, compared to 188 for PMMA).…”

Section: Resultsmentioning

confidence: 93%

“…For example, to obtain improved scratch resistance, it is necessary to increase the tensile strength and rigidity of the polymeric composite which unfortunately affects hardness and impact resistance or induces the loss of optic and rheological properties and vice versa. Migratory additives such as erucamide, behenamide and stearamide have traditionally been used to improve scratch resistance of PMMA [14]. Fatty acid amides migrate to the surface of plastics and form a thin film, which has as effect reducing the coefficient of friction and increasing scratch resistance.…”

Section: Introductionmentioning

confidence: 99%

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Morphological and Tribological Properties of PMMA/Halloysite Nanocomposites

et al. 2018

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From an environmental and cost-effective perspective, a number of research challenges can be found for electronics, household, but especially in the automotive polymer parts industry. Reducing synthesis steps, parts coating and painting, or other solvent-assisted processes, have been identified as major constrains for the existing technologies. Therefore, simple polymer processing routes (mixing, extrusion, injection moulding) were used for obtaining PMMA/HNT nanocomposites. By these techniques, an automotive-grade polymethylmethacrylate (PMMA) was modified with halloysite nanotubes (HNT) and an eco-friendly additive N,N′-ethylenebis(stearamide) (EBS) to improve nanomechanical properties involved in scratch resistance, mechanical properties (balance between tensile strength and impact resistance) without diminishing other properties. The relationship between morphological/structural (XRD, TEM, FTIR) and tribological (friction) properties of PMMA nanocomposites were investigated. A synergistic effect was found between HNT and EBS in the PMMA matrix. The synergy was attained by the phase distribution resulted from the selective interaction between partners and favourable processing conditions. Modification of HNT with EBS improved the dispersion of nanoparticles in the polymer matrix by increasing their interfacial compatibility through hydrogen bonding established by amide groups with aluminol groups. The increased interfacial adhesion further improved the nanocomposite scratch resistance. The PMMA/HNT-EBS nanocomposite had a lower coefficient of friction and lower scratch penetration depth than PMMA/HNT nanocomposite.

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Section: Resultsmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Morphological and Tribological Properties of PMMA/Halloysite Nanocomposites

et al. 2018

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“…As stated above, the CoF is an important property that is measured through a scratch test, during which two mechanisms prevail: adhesion and ploughing . The main factors that affect the overall coefficient of friction evolution during a scratch test are: the material type, the sliding speed and the lubricating conditions.…”

Section: Resultsmentioning

confidence: 99%

Nanoscale Mechanical and Tribological Properties of Plasma Nanotextured COP Surfaces with Hydrophobic Coatings

Dragatogiannis

Koumoulos

Ellinas

et al. 2015

Plasma Process. Polym.

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Cyclo olefin polymer (COP) surfaces, treated in oxygen plasmas under highly anisotropic conditions to favor roughness formation, are coated with thin hydrophobic films to form surfaces of enhanced hydrophobicity. As hydrophobic coatings, plasma-deposited fluorocarbon or spin-coated Teflon thin films are implemented. Nanoindentation and nanoscratch experiments have been employed to elucidate the effect of plasma treatment on the mechanical and tribological performance of the synthesized materials. It is shown that short-time plasma treatment slightly changes mechanical and tribological properties of plasma-nanotextured COP, as compared to untreated. The plasma deposited hydrophobic film on the COP surfaces presents good adhesion and it effectively protects the surfaces, reducing plastic deformation.

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“…During the scratching process, two main forces that act, the first force is a normal load which have vertically effect on the contact area between the indenter and the materials. while the frictional force which represents as a material's resistance against indenter dynamics in the tangential direction (Figure 2) (Mansha et al 2011). The normal load can be defined as a scratch hardness and "tangential hardness" according to the "frictional force" and the "scratch hardness" can be calculated from these two forces (B J Briscoe and Sinha 2003).…”

Section: Polymer and Polymer Composites Scorching Behaviormentioning

confidence: 99%

A a Review in Scratch Deterioration Patterns for Polymer and Its Composites

Al-Kawaz

2020

IQJMME

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Recently, scratch technique is widely used for characterizing the mechanical properties of awide range of surfaces. In the engineering applications and in order to determine the relativehardness of materials, coatings and paints evaluations, and appraisal a variety of materialdamage countenance when subjected to asperity of the hard counterface, a scratch test wassuccessfully used. In the current work, we have reviewed theoretical models that have beendeveloped in the field of scratching and the scratch way that used for characterizationpolymeric surfaces. In order to design scratch-resistant polymers, we also discussed thevarious wear and scratch damage mechanisms for polymer and its composites. In addition,we discussed the influence of types and concentration of filler on the wear and scratchresistance. The aim of this work is to review the theoretical models that have been developedin the field of scratching and the scratch way that used for characterization polymeric surfaces.

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The effect of plasticization by fatty acid amides on the scratch resistance of PMMA

Cited by 31 publications

References 37 publications

Morphological and Tribological Properties of PMMA/Halloysite Nanocomposites

Morphological and Tribological Properties of PMMA/Halloysite Nanocomposites

Nanoscale Mechanical and Tribological Properties of Plasma Nanotextured COP Surfaces with Hydrophobic Coatings

A a Review in Scratch Deterioration Patterns for Polymer and Its Composites

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