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 11 of 11 for “"Flory-Huggins interaction parameter"”.
-
Development of Sustainable Thermoplastic Elastomers
… composition of SAS) was utilized as a convenient parameter for tuning the physical properties of SAS, including the melting temperature and viscosity of the midblock polyacrylate, melt viscosity of SAS above the ODT, and tensile properties. The thermodynamic interactions between the components of …
-
Templated self-assembly of siloxane block copolymers for nanofabrication
… (PS-PDMS) BCPs, which have a very large Flory-Huggins interaction parameter between the blocks compared to other commonly used BCPs. Cylinder- or sphere-forming BCP films were spincoated over silicon substrates patterned with shallow steps using optical lithography or nanoscale posts made …
-
The thermal behaviour and isothermal crystallisation of cyclic poly(butylene terephthalate)and its blends
… glass transition temperature and negative Flory-Huggins interaction parameter. Studies on crystallisation kinetics of c-PBT were also done by Avrami analysis and using the Hoffman-Lauritzen theory. Previously there have been very limited studies of the crystallisation kinetics of PBT …
-
Development and Evaluation of Ternary Amorphous Solid Dispersion of Poorly Water-soluble Compounds
… i.e. miscibility, crystallization tendency, Flory-Huggins interaction parameter, solubility parameter, as well as advanced studies (i.e., crystallization kinetics and molecular interaction). Upon selection of the optimum polymer, TASDs were prepared by rotary evaporation. Pure drugs, their …
-
Mesoscale simulation of block copolymer phase separation and directed self-assembly processes: Applications for semiconductor manufacturing
… strength (as measured by χN, where χ is the Flory- Huggins interaction parameter and N is the degree of polymerization) resulted in a larger than expected increase in line roughness when χN was low. Polydispersity resulted in a moderate increase in line roughness. In regards to equilibrium …
-
Thermodynamic Interactions in Polydiene/Polyolefin Blends
Thermodynamic interactions in blends of polydienes and polyolefins were investigated using small angle neutron scattering (SANS). Model polydienes with controlled molecular weight, dispersity, and precise chemical structure were synthesized using anionic polymerization, and subsequently saturated …
-
Design of Single-Chain Polymer Nanoparticles to Mimic Globular Proteins
… proteins. This effect arises from a negative Flory–Huggins interaction parameter (𝜒) between methyl methacrylate and polyethylene glycol in MMA-based RHPs. Guided by these insights, I design a biodegradable, polyester-based RHP that exhibits similar properties in silico. I further map the …
-
Hot-melt mixing of partially miscible active pharmaceutical ingredient-polymer mixtures
… and X-ray diffraction (XRD). A model using the Flory-Huggins interaction parameter X estimated from the "phase diagram" was utilized to predict the room temperature solubility. The drug's solubility in the amorphous portion of PEO was estimated to be 11.7% at 300 K. Since PEO is a …
-
Self-assembly and selective swelling in Lamellar block copolymer photonic gels
… of alcohol-water co-solvents. A model based on Flory-Huggins mixing and line defect network strain energy quantitatively relates the photonic gel's reflectivity to the Flory-Huggins interaction parameter X between P2VP and the co-solvent and the average defect density. The results indicate that …
-
Nanotherapies for Treating Prostate Cancer
… of bicalutamide was designed and synthesized. Flory-Huggins interaction parameter (χFH) was used to assess compatibility between bicalutamide and poly (L-lactide) or poly (carbonate-co-lactide) polymer pairs. Polyethylene glycol-b-poly (carbonate-co-lactide) [PEG-b-P(CB-co-LA)] copolymers were …
-
Rational Design of Poly(phenylene sulfide) Aerogels Through Precision Processing
… through the manipulation of various processing parameters, such as polymer concentration, post-process annealing conditions, mode of manufacturing (casting versus additive manufacturing), dissolution temperature, and drying method. The ultimate goal was to elucidate key …