Incorporation of an Adhesion Promoter in a Structural Adhesive: Aspects of Durability and Interface Chemistry

Sautrot, M.; Abel, Marie‐Laure; Watts, John F.; Powell, Jonathan

doi:10.1080/00218460590921995

Cited by 16 publications

(9 citation statements)

References 7 publications

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“…Figure 1 presents the high resolution Si2p spectrum obtained from aluminium treated with 4.5 Â 10 À1 M GPS. The high Interaction and Adsorption of c-GPS 729 resolution Si2p spectrum exhibits binding energy at 102 eV for all samples, and this indicates that the Si2p signal is assigned to organic rather than inorganic silicon [8]. Table 2 shows the surface concentrations for the different chemical states of carbon established by peak fitting of the C1s core level spectra.…”

Section: Tof-sims Analysismentioning

confidence: 96%

“…Over the last decade, research in the authors' laboratory has led to a much improved understanding of the mode of action of organosilane adhesion promoters, both when applied as a primer layer and when incorporated into the formulation of a structural adhesive [4][5][6][7][8]. One critical observation, made using high spectral resolution time-of-flight secondary ion mass spectrometry (ToF-SIMS), has been the formation of a covalent bond between the organosilane molecule and the oxidised aluminium surface [9].…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of the Interaction and Adsorption of γ-Glycidoxy propyl trimethoxy silane with Grit-Blasted Aluminium: A ToF-SIMS and XPS Study

Shimizu

Abel

Watts

2008

The Journal of Adhesion

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Time-of-flight secondary ion mass spectrometry (ToF-SIMS) and X-ray photoelectron spectroscopy (XPS) have been employed to study the adsorption and interaction of c-glycidoxy propyl trimethoxy silane (GPS) with grit-blasted aluminium.GPS displaces adventitious hydrocarbon either by covalent bond formation between GPS and aluminium, or adsorption, when GPS is deposited on the aluminium. ToF-SIMS fragments present at a nominal mass m=z ¼ 71 were peak-fitted to seven peaks by using CasaXPS Software. AlOSi þ and Si þ were used to establish a relationship between covalent bond formation and the adsorption process. It is found that the adsorption isotherms of Si þ relating to the adsorption of GPS were of the Langmuir type. The interfacial bonding between GPS and aluminium is mainly covalent at low solution concentrations. At higher concentrations (greater than 4.5 Â 10 À4 M) all the sites for the covalent bond formation appear to be occupied while these for the acid-base interaction are still available and then become fully occupied at solution concentrations of 4.5 Â 10 À2 M and above.

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Section: Tof-sims Analysismentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Evaluation of the Interaction and Adsorption of γ-Glycidoxy propyl trimethoxy silane with Grit-Blasted Aluminium: A ToF-SIMS and XPS Study

Shimizu

Abel

Watts

2008

The Journal of Adhesion

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“…On the other hand, manufacturers of coupling agents indicate that the typical fillers, with average particle sizes of 1 to 5 μm, often give the best results when these are treated with about 1% silane, although the optimal level of silane treatment should be determined experimentally [16]. It has also been reported that too much silane within formulation can lead to a detrimental effect of the properties measured [17,18] as oligomers (siloxanes) can be formed.…”

Section: Introductionmentioning

confidence: 98%

Towards optimization of the silanization process of hydroxyapatite for its use in bone cement formulations

Cisneros-Pineda

Kao

Loría‐Bastarrachea

et al. 2014

Materials Science and Engineering: C

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“…These factors lead to a poor dispersion of PC in the PA matrix and vice-versa. In this situation, an additive is required [11,12], that can act as a compatibiliser, which can effectively reduce the elastomer's viscosity.…”

Section: Methodsmentioning

confidence: 99%

The Influence of Compatibiliser on the Properties of Polymer Composites

Georgescu¹,

Alexandrescu²,

Sönmez³

et al. 2017

LFJ

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ABSTRACT. Thermoplastic polymers are materials of the future, with special properties, depending on the type of elastomer, the degree of reinforcement, the type of reinforcement material, the functionalization of the reinforcing material, the type of functionalization agent, the elastomer-compatibiliser-reinforcing agent ratio, etc. Polycarbonate (PC) and polyamide (PA) are two elastomers with high hardness, immiscible due to differences in polarity, processing temperature, and solubility. These factors lead to a poor dispersion of PC in the PA matrix and vice versa. Mechanical and physical properties of these polymer blends come not only from the combination of polymeric compounds, but also from the developed morphological forms (interface). Therefore, an additive is required to act as a compatibiliser able to effectively reduce elastomer viscosity. In order to observe the influence of the selected compatibiliser on the properties of polymer composites, the latter were characterized physico-mechanically and morphologically. Thus, compatibilisers chosen for this study were polycaprolactone and polyalkyloxazoline. These compatibilisers, with specific surface and free energy, intervene in polymer-polymer interactions, increasing compatibility, forming polymer-compatibiliser-polymer bonds. Considering these properties formulations of polymercompounds were established (P1-P13) based on polyamide/compatibiliser/polycarbonate/fibreglass. Tested polymer composites contain different percentages of polyamide and polycarbonate (90, 70, 50, 30,10), compatibiliser (caprolactone and oxazoline) 3-7%, and 10-30% fibreglass. KEY WORDS: composites, polymers, polyamide, polycarbonate, compatibilisers INFLUENŢA AGENTULUI DE COMPATIBILIZARE ASUPRA CARACTERISTICILOR COMPOZITELOR POLIMERICEREZUMAT. Materialele polimerice termoplaste sunt materiale de viitor, având proprietăţi speciale, în funcţie de tipul de elastomeri, gradul de armare, tipul de material de armare, funcţionalizarea materialului de armare, tipul de agent de funcţionalizare, raportul elastomer-agent de compatibilizare-agent de armare etc. Policarbonatul (PC) şi poliamida (PA) sunt doi elastomeri cu duritate mare, nemiscibili datorită diferenţelor de polaritate, temperatură de prelucrare şi solubilitate. Aceşti factori conduc la o slabă dispersie a PC în matricea de PA şi invers. Proprietăţile mecanice şi fizice ale acestor amestecuri polimerice nu provin doar de la combinaţia de compuşi polimerici, ci şi de la formele morfologice dezvoltate (interfaţă). Prin urmare, este necesar un aditiv care să acţioneze ca un compatibilizator capabil să reducă în mod eficient viscozitatea elastomerilor. În vederea observării influenţei compatibilizatorului ales asupra proprietăţilor compozitelor polimerice, acestea au fost caracterizate din punct de vedere fizico-mecanic şi morfologic. Astfel, compatibilizatorii aleşi pentru acest studiu au fost policaprolactona şi polialchiloxazolina. Aceşti compatibilizatori, cu suprafaţă specifică şi energie liberă, intervin în interacţiunile po...

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Incorporation of an Adhesion Promoter in a Structural Adhesive: Aspects of Durability and Interface Chemistry

Cited by 16 publications

References 7 publications

Evaluation of the Interaction and Adsorption of γ-Glycidoxy propyl trimethoxy silane with Grit-Blasted Aluminium: A ToF-SIMS and XPS Study

Evaluation of the Interaction and Adsorption of γ-Glycidoxy propyl trimethoxy silane with Grit-Blasted Aluminium: A ToF-SIMS and XPS Study

Towards optimization of the silanization process of hydroxyapatite for its use in bone cement formulations

The Influence of Compatibiliser on the Properties of Polymer Composites

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