Nanocomposites based on a polyamide 6/maleated styrene–butylene-co-ethylene–styrene blend: Effects of clay loading on morphology and mechanical properties

González, I.; Eguiazábal, J. I.; Nazábal, J.

doi:10.1016/j.eurpolymj.2006.07.014

Cited by 105 publications

(34 citation statements)

References 57 publications

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“…However, even if improvements in the performance have been achieved using ternary asphalt/polymer/clay (APC) systems, the main advantage that was immediately observed concerns increased asphalt/polymer compatibility. Even though somehow unexpected, this is not surprising, because it was already known that clays may be used as compatibilizer agents in polymer blends [282][283][284][285][286][287][288][289][290][291]. This is possible because the organoclay, even if preferentially located within the bulk of the most compatible polymer, may also localize at the interfacial region.…”

Section: Nanocomposite-modified Asphaltsmentioning

confidence: 71%

A review of the fundamentals of polymer-modified asphalts: Asphalt/polymer interactions and principles of compatibility

Polacco

Filippi

Merusi

et al. 2015

Advances in Colloid and Interface Science

502

184

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During the last decades, the number of vehicles per citizen as well as the traffic speed and load has dramatically increased. This sudden and somehow unplanned overloading has strongly shortened the life of pavements and increased its cost of maintenance and risks to users. In order to limit the deterioration of road networks, it is necessary to improve the quality and performance of pavements, which was achieved through the addition of a polymer to the bituminous binder. Since their introduction, polymer-modified asphalts have gained in importance during the second half of the twentieth century, and they now play a fundamental role in the field of road paving. With high-temperature and high-shear mixing with asphalt, the polymer incorporates asphalt molecules, thereby forming a swallowed network that involves the entire binder and results in a significant improvement of the viscoelastic properties in comparison with those of the unmodified binder. Such a process encounters the well-known difficulties related to the poor solubility of polymers, which limits the number of macromolecules able to not only form such a structure but also maintain it during high-temperature storage in static conditions, which may be necessary before laying the binder. Therefore, polymer-modified asphalts have been the subject of numerous studies aimed to understand and optimize their structure and storage stability, which gradually attracted polymer scientists into this field that was initially explored by civil engineers. The analytical techniques of polymer science have been applied to polymer-modified asphalts, which resulted in a good understanding of their internal structure. Nevertheless, the complexity and variability of asphalt composition rendered it nearly impossible to generalize the results and univocally predict the properties of a given polymer/asphalt pair. The aim of this paper is to review these aspects of polymer-modified asphalts. Together with a brief description of the specification and techniques proposed to quantify the storage stability, state-of-the-art knowledge about the internal structure and morphology of polymer-modified asphalts is presented. Moreover, the chemical, physical, and processing solutions suggested in the scientific and patent literature to improve storage stability are extensively discussed, with particular attention to an emerging class of asphalt binders in which the technologies of polymer-modified asphalts and polymer nanocomposites are combined. These polymer-modified asphalt nanocomposites have been introduced less than ten years ago and still do not meet the requirements of industrial practice, but they may constitute a solution for both the performance and storage requirements.

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Section: Nanocomposite-modified Asphaltsmentioning

confidence: 71%

A review of the fundamentals of polymer-modified asphalts: Asphalt/polymer interactions and principles of compatibility

Polacco

Filippi

Merusi

et al. 2015

Advances in Colloid and Interface Science

502

184

View full text Add to dashboard Cite

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“…The rest of the compositions showed similar plots. As can be seen, no peak was seen in the case of the Ncs indicating a full exfoliation of the OMMT, which is an usual result in PA6/I30 Ncs [1,4,14]. A TEM micrograph of the 20-5 Nc is shown in Fig.…”

Section: Morphologymentioning

confidence: 77%

“…As can be seen, the clay is located in the dispersed phase and no preferential location close to the interphase is observed. As the mixing procedure was clearly efficient taking into account the obtained fine dispersed phase size, the location of the OMMT in the dispersed PA6 phase has to be due to the known ability of PA6 to mix and exfoliate the I30 [1,25,26]. This is the location sought after through the processing procedure, i.e.…”

Section: Morphologymentioning

confidence: 99%

“…It is common knowledge that research into polymer nanocomposites with layered organoclays such as montmorillonite has neglected somewhat the study of the most adequate organic modification to optimize dispersion of the organoclay for use in more complex systems such as those based on multicomponent matrices like polymer blends, where the dispersed phase is mostly a rubber or other thermoplastic [1][2][3]. In recent times, however, the possibility of using the dispersed phase of a nanocomposite prone to fibrillate in the molten state as a means to stiffening the matrix has come to light.…”

Section: Introductionmentioning

confidence: 99%

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Stiffening of poly(ethylene terephthalate) by means of polyamide 6 nanocomposite fibers produced during processing

Goitisolo

Eguiazábal

Nazábal

2010

Composites Science and Technology

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“…The most widely applied method to overcome this drawback is blending with elastomers such as maleated ethylene-propylene copolymer (EPRgMAH) [3,7] and maleated styrene-ethylene-butadienestyrene rubber (SEBSgMAH) [9][10][11]. According to González et al [11], the addition of up to 6% of an organoclay to a 70/30 PA6/SEBSgMAH blend led to ternary compounds combining the stiffness improvement due to the inclusion of clay and the toughening effect of the rubber.…”

mentioning

confidence: 99%

Ethylene-octene copolymer (POE) toughened polyamide 6/polypropylene nanocomposites: Effect of POE maleation

Wahit

Hassan

Ishak

et al. 2009

Express Polym. Lett.

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Nanocomposites based on a polyamide 6/maleated styrene–butylene-co-ethylene–styrene blend: Effects of clay loading on morphology and mechanical properties

Cited by 105 publications

References 57 publications

A review of the fundamentals of polymer-modified asphalts: Asphalt/polymer interactions and principles of compatibility

A review of the fundamentals of polymer-modified asphalts: Asphalt/polymer interactions and principles of compatibility

Stiffening of poly(ethylene terephthalate) by means of polyamide 6 nanocomposite fibers produced during processing

Ethylene-octene copolymer (POE) toughened polyamide 6/polypropylene nanocomposites: Effect of POE maleation

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