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Latsuzbaia, R. (author), Negro, E. (author), Koper, G.J.M. (author)
Platinum nanoparticles, which are used as catalysts in Proton Exchange Membrane Fuel Cells (PEMFC), tend to degrade after long-term operation. We discriminate the following mechanisms of the degradation: poisoning, migration and coalescence, dissolution, and electrochemical Ostwald ripening. There are two ways to tackle this problem. The first...
conference paper 2013
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Brochu, A.B.W. (author), Evans, G.A. (author), Reichert, W.M. (author)
One of the most broadly reported self-healing schemes is that pioneered by White and Sottos et al. in which a polymer matrix is co-embedded with a catalyst and microcapsules containing a reactive healing agent. Although this field has been steadily growing over the past 10 years, little discussion of extension into biomaterials has taken place...
conference paper 2013
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Huang, X. (author), Geng, X. (author), Wen, G. (author), Song, G. (author), Zhou, Y. (author)
Abstract only.
conference paper 2013
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Ollier, R.P. (author), Penoff, M.E. (author), Rodriguez, E.S. (author), Alvarez, V.A. (author)
Advances in the study of composite polymeric materials for structural applications have suggested the possibility of an early elimination of cracks to avoid macroscopic damage of the material. Hence, the concept of self-healing composite materials has been introduced to reduce the maintenance cost and frequency, to increase the life in service...
conference paper 2013
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Jonkers, H.M. (author), Palin, D. (author), Flink, P. (author), Thijssen, A. (author)
Concrete constructions in the marine environment suffer from chemical attack of sea salts which can induce damage to both the concrete matrix and embedded steel reinforcement. For example, ingress of sulfate and chloride ions can respectively result in detrimental ettringite formation and enhanced corrosion of the steel rebars. The first...
conference paper 2013
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Xiong, W. (author), Zhu, G. (author), Tang, J. (author), Dong, B. (author), Han, N. (author), Xing, F. (author), Schlangen, H.E.J.G. (author)
Poly (urea-formaldehyde) (PUF) shelled dicyclopentadiene (DCPD) microcapsules were prepared by in-situ polymerization technology for self-healing concrete applications. It’s found, during the process, sodium dodecyl benzene sulfonate (SDBS) behaves better in emulsification of DCPD than other surfactant of sodium lauryl sulfate (SLS) and styrene...
conference paper 2013
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Jakobs, R.T.M. (author), Sijbesma, R.P. (author)
Abstract only.
conference paper 2013
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Zhang, S. (author), Langelaan, G. (author), Schut, H. (author), Brück, E. (author), Van der Zwaag, S. (author), Van Dijk, N.H. (author)
Steels are among the most widely used construction materials as their mechanical properties can be tuned over a very wide range of desired combinations of strength formability and other properties. However, when exposed for long times to high temperatures steel components can exhibit premature and low-ductility creep fracture, which arises from...
conference paper 2013
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Zhu, G. (author), Zhou, Y. (author), Wu, Z. (author), Tang, J. (author), Dong, B. (author), Han, N. (author), Xing, F. (author)
The microcapsules of epoxy E-51 resin encapsulated by cured itself were prepared by interfacial curing reaction, in which ethylenediamine (EDA) was employed as curing agent and sulfonated copolymer of styrene and maleic anhydride (SMA) as emulsifying agent. It’s found the morphology of microcapsules strongly depend on reaction time and EDA...
conference paper 2013
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Vidinejevs, S. (author), Aniskevich, A. (author)
Creation of an ideal self-healing polymer composite material with durable performance could become an alternative to traditional improvement of lightweight constructions. A vascular strategy of the self-healing of the epoxy materials is based on healing agent (HA) delivery to the damage via system of channels formed in the material. The aim of...
conference paper 2013
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Mors, R.M. (author), Jonkers, H.M. (author)
A functional experimental concrete system has been developed in our lab, in which a two component bacteria-based healing agent contained in a protective reservoir is included in the concrete mixture. Incorporated bacteria have the potential to produce copious amounts of calcium carbonate based crystals from supplied mineral precursor compounds....
conference paper 2013
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Li, S. (author), Zhou, Y. (author)
Abstract only.
conference paper 2013
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Krull, B.P. (author), Santa Cruz, W.A. (author), Gergely, R.C.R. (author), White, S.R. (author), Moore, J.S. (author), Sottos, N.R. (author)
Abstract only.
conference paper 2013
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Lv, L.P. (author), Zhao, Y. (author), Vimalanandan, A. (author), Rohwerder, M. (author), Landfester, K. (author), Crespy, D. (author)
Abstract only.
conference paper 2013
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Speck, O. (author), Schlechtendahl, M. (author), Schmich, F. (author), Speck, T. (author)
After an artificial injury in succulent leaves of Delosperma cooperi and Delosperma ecklonis rapid wound sealing by deformation of the entire leaf takes place within approximately 90 minutes. On the basis of comparative anatomical and biomechanical analyses of the closely related species conclusions can be drawn on necessary boundary conditions...
conference paper 2013
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Zhang, M. (author), Han, N. (author), Xing, F. (author), Wang, X. (author), Schlangen, H.E.J.G. (author)
For a microcapsule based self-healing system in the cementitious material, a fundamental issue is to find and facilitate a suitable microcapsule system, concerning either the material selection or design and manufacture process. In this study, urea formaldehyde resin is used for the shell of microcapsule, and bisphenol – an epoxy resin E-51...
conference paper 2013
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Pauli, A. (author), Schmets, A.J.M. (author), Kasbergen, C. (author), Varveri, K. (author), Scarpas, A. (author)
Bituminous materials form a class of materials that possess the intrinsic ability to selfheal. This self-healing capability is evidenced by the observation that the service life of these materials ‘in the field’ exceeds the service life as predicted by standard mechanical laboratory tests. This mismatch between laboratory prediction and field...
conference paper 2013
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Cordioli, C. (author), Bauters, E. (author), Muselle, T. (author), Hubin, A. (author)
Commonly coatings are used to protect metals from corrosion. Different types of coatings are available and according to their characteristics they provide different levels of protection. In order to evaluate the performance of the coating, it is fundamental to have a methodology that is reliable and efficient even when applied to different kinds...
conference paper 2013
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Wang, J.Y. (author), Van Vlierberghe, S. (author), Dubruel, P. (author), Verstraete, W. (author), De Belie, N. (author)
Self-healing concrete is regarded as a promising solution to reduce the high maintenance and repair cost of concrete infrastructure. Due to the limited autogenous healing capacity of concrete as such, additives are needed to enhance its self-healing properties. Among various strategies, microbial-based self-healing has gained increasing...
conference paper 2013
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Brancart, J. (author), Scheltjes, G. (author), Diaz, M.M. (author), Van Mele, B. (author), Van Assche, G. (author)
Research in the field of smart materials that exhibit self-repair mechanisms has greatly expanded over the last few years. This is especially true for polymers and polymer composite materials. One class of self-healing polymer materials is the reversible polymer network systems that use dynamic covalent bonds as a means to repair sustained...
conference paper 2013
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