Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 26 for “"self-healing materials"”.
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Microvascular Networks for Continuous Self -Healing Materials
Microcapsule-based and hollow glass fiber-based self-healing composites enable a single repair of crack damage in a given location. Re-mendable polymers have demonstrated crack mending for multiple cycles, but only with heat treatment and applied pressure. We demonstrate, for the first time, the …
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Novel Self-Healing Materials Chemistries for Targeted Applications
[1] White, S. R.; Sottos, N. R.; Geubelle, P. R.; Moore, J. S.; Kessler, M. R.; Sriram, S. R.; Brown, E. N.; Viswanathan, S. Nature 2001, 409, 794.
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Self-healing materials and multinozzle printheads with embedded microvascular networks
… attributes in engineering contexts such as self-healing materials, microfluidic temperature regulation, and tissue engineering is gaining significant attention. Yet, the ability to design and replicate synthetic microvascular networks remains a challenge with limited progress to date. The …
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Resistive heating for self-healing materials based on ionomeric polymers
Self-healing materials have received considerable development in the last decade. Recent results have demonstrated healing in polymeric materials via a chemical reaction using a healing agent or response to thermal treatment. The goal of this research is to develop a new composite material, for …
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A review of the encapsulation strategy in structural self-healing materials
… an injury. Bio-mimicking the process of healing after being injured when withstanding the test of time has paved the way for the advancement of self-healing materials. After presenting an overview of the self-recovering process of the human skin, this thesis will focus on the …
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Evaluation of Tungsten Hexachloride as a ROMP Active Catalyst Precursor for Self -Healing Polymers
A drawback to current catalysts used in self-healing materials is the relatively low temperatures at which they deactivate. An advantage of WCl 6 is that the high melting temperature (Tm=275°C) allows for the use of the catalyst in higher temperature applications. Typical polymer and fiber …
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Structural modeling of dynamic polymer networks
… network based gels are an important class of materials with a wide range of applications. Dynamic polymer networks, which crosslink via the formation of reversible bonds, in particular have great potential as stimuli responsive, mechanically tunable, and self-healing materials. Many important …
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Functional electrospun fibers for responsive coatings and sacrificial templates
… and barrier effectiveness of coatings. Self-healing materials have the ability to repair or prevent further damage autonomously, where and when it occurs. Autonomous repair can increase the lifetime of materials, thereby reducing the economic and environmental impact of material damage …
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Evaluation of novel autonomous self-healing polymer composite
Autonomous self-healing materials offer a novel ability to self-repair damage caused by fatigue or fracture. Applications in many industries, from medical to aerospace, suffer from formation of microcracks, which often result in catastrophic failure of the product when the cracks remain undetected. …
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Mechanical characterization and self-healing in synthetic vascularized materials
Inspired by natural healing processes, a variety of synthetic self-healing materials have been developed that mechanically recover from structural damage autonomously. One strategy for creating self-healing materials is to distribute reactive fluids throughout the material volume using a …
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Magnetic polyamide 6 nanocomposites for increasing damage tolerance through self-healing of composite structures.
Self-healing materials have the ability to repeatedly repair damages that occur before complete failure of materials. The development of stimuli-responsive self-healing materials has been in demand recently for composite structures, since their failure is relatively uncertain and can result in …
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Design and development of stimuli-responsive materials: pH sensitive polymersomes and poly(olefin sulfone)s
Stimuli-responsive materials are materials exhibit a response when exposed to specific external triggers. These materials are powerful tools for material development in areas such as encapsulation, photoresists, sensors, self-healing materials, drug delivery, and transient electronic devices. A …
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Synthesis and application of ionic molecular and polymeric materials
Materials are built from atoms and molecules through different interactions. Few artificial material is built primarily with ionic interaction despite its ubiquitous existence in living systems. My research has focused on filling this void by developing novel ionic molecular and polymeric materials …
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Solvent-based self-healing polymeric materials
… systems, this damage automatically initiates a healing response. Following the example of nature, self-healing polymers are engineered with the unique ability to extend the lifetime of materials by preventing damage propagation using various chemical mechanisms that are triggered by crack …
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Magnetic Induction for In-situ Healing of Polymeric Material
The field of self-healing materials is growing dramatically due to the obvious in- centive of having structural materials with the ability to repair damage. Some polymers have demonstrated the ability to heal from damage autonomously[12, 26], when exposed to heat[1], or when punctured[5, 9]. The …
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COMPUTATIONAL STUDY OF THE INTERACTION BETWEEN MOLECULES OF TECHNOLOGICAL INTEREST AND MODIFIED NANOTUBULAR CLAYS
… sustained and controlled release of species and self-healing materials, just to cite a few. In the development of new technological materials, the comprehension of the interaction between the substrate and the target molecules plays a crucial role. So far the HNT nanomaterials are investigated by …
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Self-healing laminated composites from prepreg fabrics
… (FRP) composites are eminent engineering materials for structural applications due to their high strength-to-weight ratios. During their service life, FRP composites are often exposed to severe conditions leading to fatigue-induced damage. This damage mode is complex and difficult to …
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Microvascular strategies for damage restoration
Autonomous repair of synthetic materials has previously been demonstrated by the incorporation of biomimetic microvascular networks within structural polymers and polymer composites. Internal networks of channels act as pathways for mass transport of liquid healing agents to damage regions that …
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Rapid on-demand polymerization for multifunctional materials
Multifunctional materials are able to perform multiple functions through judicious combinations of structural and non-structural properties, leading to enhancements in systems-level performance. Because multifunctional materials are inherently complex, their manufacturing is typically expensive and …
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