Results 181 to 190 of about 18,216 (237)

Nanoclays for Conservation

2019
Within the conservation of artworks materials, this chapter describes innovative strategies based on clay nanoparticles that are promising for protective coating, surface cleaning, and consolidation. We present the preparation of polymer/montmorillonite nanocomposites, which are revealed as efficient protective coatings for highly porous stones ...
Cavallaro G., Lazzara G., Parisi F., Riela S., Milioto S.   +4 more
openaire   +4 more sources

Effect of ultrasound sonication in nanoclay clusters of nanoclay/epoxy composites

Materials Letters, 2005
Ultrasound sonication has been widely used in the exfoliation of nanoclay platelets. Nevertheless, the existence of absolutely exfoliated nanoclay composites is impossible in reality. Regions of intercalated nanoclay platelets can be easily formed and agglomerate as tiny clusters.
Lam, Chunki, Lau, Alan Kin Tak, Cheung, Hoiyan, Ling, Hang yin   +3 more
openaire   +2 more sources

Mechanisms of nanoclay-enhanced plastic foaming processes: effects of nanoclay intercalation and exfoliation

Journal of Nanoparticle Research, 2013
The foaming behaviors of high-density polypropylene-nanoclay composites with intercalated and exfoliated nanoclay particles blown with carbon dioxide were examined via in situ observation of the foaming processes in a high-temperature/high-pressure view-cell.
Wong, A., Wijnands, S.F.L., Kuboki, T., Park, C.B.   +3 more
openaire   +1 more source

NANOCLAY PRODUCTION

ARACÊ
Since primordial times, humanity has used clay as an essential raw material in the commercial and industrial sectors. Nanocomposites such as nanoclay have a significant gain in mechanical properties, being used by industry in various applications.
Vivyane Alencar Marques Araújo do Nascimento Medeiros, Anselmo Fortunato Ruiz Rodriguez   +1 more
openaire   +1 more source

Nanoclays as Asphalt-Binder Modifiers

2013
Among the solutions to reduce failures of road pavements, polymer-modified asphalts (PMAs) represent the most effective one and have been adopted worldwide in the last decades. PMAs are blends of asphalt and a polymer, where the latter is swollen by the bituminous material, thus forming a network whose structure closely resembles that of gels ...
POLACCO, GIOVANNI, FILIPPI, SARA, PACI, MASSIMO, F. Merusi   +3 more
openaire   +4 more sources

Recyclable polyurethane/nanoclay films

Polymer Composites, 2019
A series of polyurethane (PU)/clay nanocomposite films was prepared by adding natural bentonite Cloisite® Na+ powders to waterborne polyurethane dispersions (PUDs) followed by a slow water evaporation; the nanoclay content in the films varied from 0 to 5 wt%.
Milena Špírková, Libuše Brožová, Jiří Hodan, Jana Kredatusová, Sabina Krejčíková, Alexander Zhigunov, Jelena Pavličević   +6 more
openaire   +1 more source

Nanoclay-reinforced polyurethane

2015
Polyurethane-layered silicate nanocomposites with different layered silicates, montmorillonite (MMT) and attapulgite (ATT), were investigated to gain fundamental understanding of the role of nanofillers, the chemistry of the modifiers, and the physics of polymer nanocomposites.
openaire   +1 more source

Nanoclay and Modified Nanoclay as Sorbents for Anionic, Cationic and Nonionic Dyes

Textile Research Journal, 2005
The nanoclay, montmorillonite, and some modified nanoclays were used as sorbents for nonionic, anionic and cationic dyes. From the sorption differences among the different dye and clay structures, both chemical and morphological, the sorption forces that played important roles were identified. The nanoclay could easily have a sorption capacity of more
Yiqi Yang, Shinyoung Han, Qinguo Fan, Samuel C. Ugbolue   +3 more
openaire   +1 more source

Nanoclay migration from food packaging materials

Food Additives & Contaminants: Part A, 2016
A recent trend is to use nanocomposites materials for food-packaging applications. Different kinds of nanoparticles are incorporated into the polymers to improve their characteristics, and, among them, nanoclay is used to improve their barrier properties to gases. In this work, the results of migration studies with different food simulants (ethanol 10%
Yolanda, Echegoyen, Silvia, Rodríguez, Cristina, Nerín   +2 more
openaire   +2 more sources

Characterisation of nanoclay dispersion in resin transfer moulded glass/nanoclay/epoxy composites

Plastics, Rubber and Composites, 2004
A novel approach for characterisation of nanoclay dispersion in polymeric composites using electron microprobe analysis (EMPA) is presented. Dispersion analysis was performed on three sets of centre-gated discs fabricated by resin transfer moulding.
L. Aktas, Y. K. Hamidi, M. C. Altan
openaire   +1 more source