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.
Results
Showing 1 to 10 of 10 for “"comb polymer"”.
-
Self-healing properties of water filtration membranes containing amphiphilic comb polymer
(cont.) and filtration experiments, as well as other characterization techniques. Surface analysis is accomplished via x-ray photoelectron spectroscopy (XPS). Membrane samples are cleaned (in hydrogen peroxide or chromic-sulfuric acid (Chromerge)) and/or annealed (in 90⁰C deionized water), and …
-
PAA/PEO Comb Polymer Effects on the Rheological Property Evolution in Concentrated Cement Suspensions
… presence of pure polyelectrolytes and PAA/PEO comb polymers with a wide range of PAA backbone molecular weight, PEO teeth molecular weight, and acid:imide ratio. Cement-PAA suspensions experienced rapid irreversible stiffening and set at 6 min due to ion-bridging interactions between the …
-
The applications of comb polymer to the study of liver cell adhesion and signaling
Comb polymer, which consists of a hydrophobic poly(methyl methacrylate) (PMMA) backbone with hydrophilic hydroxy-poly(ethylene oxide) (HPOEM) side chains, is a tool that has many possible applications for the study of liver cell adhesion and signaling. This polymer has the unique properties of …
-
Comb Polymer Architecture and Particle Size Effects on the Behavior of Biphasic Nanoparticle Inks for Direct -Write Assembly
Finally, the printing behavior of biphasic nanoparticle inks is investigated as a function of attractive-to-repulsive volume fraction and particle size ratio. Ink flow behavior is characterized by extrusion measurements, which reveals that the suspension viscosity, and, hence, pressure drop within …
-
Optimization of cell adhesion environments for a liver cell bioreactor
… were treated with an adhesion peptide-conjugated comb polymer, preventing nonspecific cell adhesion and allowing attachment through the [alpha]₅[beta]₁ integrin.
-
Single molecule studies of branched polymer dynamics in non-dilute solutions
The macroscopic properties of polymers are dictated by their molecular architecture and microstructure. Branched polymers exhibit a multitude of distinct rheological phenomena, such as shear thinning and enhanced strain hardening, compared to linear polymers as a direct consequence of their …
-
Honeycomb structured porous films from different polymer architectures - preparation, mechanism, analysis and post-treatment
… and examines the process of formation of honeycomb structured porous films using various polymer architectures ranging from linear, comb, star polymers and a random copolymer. Four casting methods were designed and applied for the production of structured porous materials. The airflow casting …
-
Biphasic Nanoparticle Inks for Direct Write Assembly of Three-Dimensional Periodic Structures
… them, either poly(acrylic acid)(PAA) or a comb polymer comprised of a PAA backbone and poly(ethylene oxide)(PEO) teeth (PAA/PEO). The PAA/PEO-coated nanoparticles remain stable, and hence behave as repulsive species in suspension under high ionic strength conditions or in the presence of …
-
Synthesis of Bottlebrush Polymers Using the Grafting-Through and Transfer-To Methods
Bottlebrush polymers are interesting topologies that have become increasingly relevant in various applications including rheology modifiers, super-soft elastomers, photonic crystals, anti-fouling coatings, the in vivo delivery of therapeutic agents, and as promising substrates in lithographic …
-
Single molecule studies of branched polymer dynamics
Polymer architecture plays a major role on the emergent physical and chemical properties of materials such as elasticity and wettability. Branched polymers exhibit strikingly different rheological behavior (e.g. enhanced stress dissipation and strain hardening) compared to linear polymers. In …