Halloysite nanotubes as nanocontainer for smart coating application: A review
TL;DR: Halloysite nanotubes have many advantages and are successfully identified/reported as a leading nanocontainer for smart coating applications as mentioned in this paper. But the coating efficiency is generally not sufficient for applications in aggressive and extreme environments.
About: This article is published in Progress in Organic Coatings.The article was published on 2017-10-01. It has received 177 citations till now. The article focuses on the topics: Nanocontainer & Coating.
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TL;DR: A comprehensive and updated review on the advantages and limitations associated with common autonomous and non-autonomous self-healing mechanisms in protective organic coatings used for anti-corrosion purposes is provided in this article.
439 citations
TL;DR: In this paper, a new corrosion inhibitor-encapsulated nanocontainer (denoted as HMSN-BTA@ZIF-8) was successfully synthesized using ZIF8 as self-sacrificial template, pH-responsive gatekeeper and interfacial compatibility assistant for hollow mesoporous silica nanoparticle (HMSN).
131 citations
TL;DR: In this paper, the influence of concentrations of 8-hydroxyquinoline (8HQ) on the morphology and corrosion resistance is reported first time, X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectra confirm the intercalation of 8HQ.
131 citations
TL;DR: In this article, the effects of feeding sequence of reactants on the properties of a MgAl layered double hydroxide (LDH) coating on Mg alloy were reported based on the X-ray diffraction patterns and Fourier transform infrared (FTIR) spectra.
104 citations
TL;DR: Very recently emerging important advancements in novel techniques utilized in developing PNC coatings for applications in aerospace, packaging, automotive, biomedicine, maritime, and oil and gas industries for attaining superior anti-fouling, anti-corrosion, and self-healing behaviors on critical material surfaces are elucidated.
97 citations
Cites background from "Halloysite nanotubes as nanocontain..."
...which entail persistant exposure to salt-fogging, and cyclical corrosion tests, such as QUV® or Prohesion®, or the synergy of both - Prohesion®/ QUV® (ASTM D 5894), simulating UV radiation and weathering environment [59-61]....
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References
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TL;DR: In this article, a general approach for multilayers by consecutive adsorption of polyanions and polycations has been proposed and has been extended to other materials such as proteins or colloids.
Abstract: Multilayer films of organic compounds on solid surfaces have been studied for more than 60 years because they allow fabrication of multicomposite molecular assemblies of tailored architecture. However, both the Langmuir-Blodgett technique and chemisorption from solution can be used only with certain classes of molecules. An alternative approach—fabrication of multilayers by consecutive adsorption of polyanions and polycations—is far more general and has been extended to other materials such as proteins or colloids. Because polymers are typically flexible molecules, the resulting superlattice architectures are somewhat fuzzy structures, but the absence of crystallinity in these films is expected to be beneficial for many potential applications.
9,593 citations
TL;DR: In this article, a multilayer films which contain ordered layers of more than one protein species were assembled by means of electrostatic adsorption mostly with positively charged poly(ethy1enimine) (PEI) or with negatively charged poly (styrenesu1fonate) (PSS).
Abstract: Multilayer films which contain ordered layers of more than one protein species were assembled by means of altemate electrostatic adsorption mostly with positively charged poly(ethy1enimine) (PEI) or with negatively charged poly(styrenesu1fonate) (PSS). Water-soluble proteins used are cytochrome c (Cyt), myoglobin (Mb), lysozyme (Lys), histone f3, hemoglobin (Hb), glucoamylase (GA), and glucose oxidase (GOD). Charged protein layers formed multilayers with linear polymers acting as glue or filler. The assembly was monitored by a quartz crystal microbalance and W spectroscopy. Linear film growth was observed up to at least 25 molecular layers. The assembly of Mb and Lys, both positively-charged, was realized in altemation with PSS in the form of {PEI/PSS + (Mb/PSS)2 + (MbPSS/Lys/PSS)d}. The assembly of oppositely-charged (at pH 6.5) Lys and GOD consists from Lys and GOD layers separated by a polycatiodpolyanion bilayer: {PEYPSSPEI f (PSS/Lys)2 + PSSPEI f (GOD/PEI)6}. Hb was assembled as “positive” unit at pH 4.5 (in alternation with PSS) and as “negative” unit at pH 9.2 (in altemation with PEI). A multilayer consisting of alternating montmorillonite, PEI, and GOD layers was also assembled. These biomolecular architecture open a way to construct artificially orchestrated protein systems that can carry out complex enzymic reactions.
1,399 citations
TL;DR: Halloysite clay minerals are ubiquitous in soils and weathered rocks where they occur in a variety of particle shapes and hydration states as discussed by the authors and diversity also characterizes their chemical composition, cation exchange capacity and potassium selectivity.
Abstract: Halloysite clay minerals are ubiquitous in soils and weathered rocks where they occur in a variety of particle shapes and hydration states. Diversity also characterizes their chemical composition, cation exchange capacity and potassium selectivity. This review summarizes the extensive but scattered literature on halloysite, from its natural occurrence, through its crystal structure, chemical and morphological diversity, to its reactivity toward organic compounds, ions and salts, involving the various methods of differentiating halloysite from kaolinite. No unique test seems to be ideal to distinguish these 1:1 clay minerals, especially in soils. The occurrence of 2:1 phyllosilicate contaminants appears, so far, to provide the best explanation for the high charge and potassium selectivity of halloysite. Yet, hydration properties of the mineral probably play a major role in ion sorption. Clear trends seem to relate particle morphology and structural Fe. However, future work is required to understand the possible mechanisms linking chemical, morphological, hydration and charge properties of halloysite.
1,156 citations
TL;DR: Self-healing polymers and fiber-reinforced polymer composites possess the ability to heal in response to damage whenever and whenever it occurs in the material as mentioned in this paper, which is a remarkable property.
Abstract: Self-healing polymers and fiber-reinforced polymer composites possess the ability to heal in response to damage wherever and whenever it occurs in the material. This phenomenal material behavior is...
1,150 citations
TL;DR: A survey of self-healing polymers can be found in this article, where the authors review the major successful autonomic repairing mechanisms developed over the last decade and discuss several issues related to transferring these selfhealing technologies from the laboratory to real applications, such as virgin polymer property changes as a result of the added healing functionality.
Abstract: Inspired by the unique and efficient wound healing processes in biological systems, several approaches to develop synthetic polymers that can repair themselves with complete, or nearly complete, autonomy have recently been developed. This review aims to survey the rapidly expanding field of self-healing polymers by reviewing the major successful autonomic repairing mechanisms developed over the last decade. Additionally, we discuss several issues related to transferring these self-healing technologies from the laboratory to real applications, such as virgin polymer property changes as a result of the added healing functionality, healing in thin films v. bulk polymers, and healing in the presence of structural reinforcements.
1,137 citations