Abstract:
The present disclosure generally describes techniques suitable for use in the construction or recycling of composite materials. An article may comprise a thermoplastic coupled to a bonding interface layer, with a coating layer applied to the surface of the bonding interface layer. A bonding interface layer may comprise catalytic nanoparticles embedded within and/or encapsulated by one or more radiatively unstable polymers. Application of ionizing radiation to the article may release a catalyst at the bonding interface. Application of heat and/or stress to the article may enhance catalytic degradation of the remaining bonding interface and uncoupling of the thermoplastic from the coating layer. Embodiments of methods, compositions, articles and/or systems may be disclosed and claimed.
Abstract:
The present technology provides a carbon fiber reinforced plastic that includes carbon fibers covalently bonded to an energetic polymer and a polymer matrix. Also described is a method for recycling carbon fibers from the carbon fiber reinforced plastic material using microwave energy to separate the carbon fibers from the polymer matrix.
Abstract:
A polymer includes at least one pendant dioxirane moiety represented by Formula III or IV: In Formulas III and IV, R1 is absent or is alkylene, perhaloalkylene, cycloalkylene, arylene, heteroarylene, heterocyclylene, amino, carbonyl, carboxyl, alkylcarboxy, carboxyalkyl or alkylcarboxyalkyl; R2 is an electron withdrawing group; R8 is —N+R4R5 or alkylene; R9 is —N+R4R5 or alkylene; each R4 is independently H, alkyl, or cycloalkyl; and each R5 is independently H, alkyl, or cycloalkyl.
Abstract:
Coating compositions that provide hydrophilic and anti-freeze properties are disclosed. The coatings include at least one hydrophilic agent bound to one or more coating components, such as a rheology modifier, a surfactant, a coalescing agent, and a pigment. The hydrophilic agents are attached to the coating components covalently.
Abstract:
Graphene composites are disclosed. The graphene composites may include, for example, a photoswitchable layer, a graphene layer, and a substrate. The graphene composites may, in some embodiments, include a graphene layer with photoswitchable surface characteristics. Methods of making the graphene composite are further disclosed. Devices and systems configured to make and use the composites are also disclosed.
Abstract:
A polymeric flexible substrate may be formed from h-BN sheets having a monolayer of hexagonal born nitride interspersed with domains of at least one functionalized material. The functionalized h-BN sheets may be used in various electronic components such as in circuit boards and touch sensors.
Abstract:
The present disclosure pertains to coatings with self-repairing capabilities. In some embodiments, the coatings may include a polymer blend, made up of at least two polymers. The coatings may further contain compatibilizers that are nanocontainer particles. The nanocontainers may be filled with self-healing agents. The self-healing agents may be agents that heal cracks formed in the coating or they may be anti-corrosion agents that reduce the corrosion of the underlying metal substrate.
Abstract:
Hydrophilic coating compositions and methods to make and use the compositions are disclosed. The compositions include a polymer comprising a plurality of isocyanate groups and a blocking agent contacting at least one of the plurality of isocyanate groups.
Abstract:
Inorganic siloxane ladder polymers with metal-aza/thio crown complexes, and methods of making and using such siloxane ladder polymers are disclosed. The polymers described herein may exhibit self-healing properties, a low dielectric constant, and a low refractive index. These siloxane ladder polymers are anchored to transparent, high-refractive index (RI) metal nanoparticles, such as ZrO2, via aza/thio crown macromolecules. The siloxane ladder polymers may be considered as “living polymer network” since the polymer active chain ends may further undergo anionic polymerization.
Abstract:
Coating compositions that provide hydrophilic and anti-freeze properties are disclosed. The coatings include at least one hydrophilic agent bound to one or more coating components, such as a rheology modifier, a surfactant, a coalescing agent, and a pigment. The hydrophilic agents are attached to the coating components covalently.