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Showing 1 to 8 of 8 for “"thermally-induced phase separation"”.
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Process-morphology-property Relationships in Strut-like Poly(ether ether ketone) Aerogels Prepared through Thermally Induced Phase Separation
… (DPA) were prepared for the first time. The phase separation mechanism was determined to be solid-liquid phase separation which resulted in the formation of aerogels consisting of crystalline axialites. These axialites formed a strut-like network that had superior compressive properties …
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Towards a lithium-ion fiber battery
… is based on the key-finding of using thermally induced phase separation as a method to introduce porous structures inside thermally drawn fibers for the very first time. This new versatile process allows us to incorporate ionically conductive gel-polymer electrolytes in fiber cores in …
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Factors Affecting Size and Swelling of Poly(ethylene glycol) Hydrogel Microspheres Formed in Aqueous Sodium Sulfate Solutions
… solvents. Reactive PEG derivatives underwent thermally induced phase separation to produce spherical PEG-rich domains that coarsened pending gelation, resulting in stable hydrogel microspheres that were polydisperse in size. The degree of reaction prior to phase separation, reaction rate …
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Physico-chemical properties of polypropylene glycols
… scanning calorimetry, thermogravimetry and thermally stimulated current (TSC) spectroscopy. It was shown, by TSC, that the glass transition temperature and the degree of molecular mobility increased with increasing molecular mass of PPG. Additional experiments showed that PPGs of molecular …
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Shear induced mixing and self-organization in immiscible alloys during severe plastic deformation
… SPD processing that will be presented are shear induced chemical mixing of alloying elements at room temperature and self-organization at elevated temperatures. Shear induced mixing mechanism in a moderately immiscible system is often attributed to the glide of dislocations but the details of how …
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The Dynamics of Phase Separation and Structure Formation in Phase Inversion
Studies of phase inversion are presented, the process by which a cast polymer solution is converted into a porous, polymer gel by either thermal or nonsolvent quenching. In all three of the studies presented in this thesis, in-situ optical techniques have been used to study the dynamics of phase …
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Rational Design of Poly(phenylene sulfide) Aerogels Through Precision Processing
… (DPA) as the gelation solvent in a thermally induced phase separation (TIPS) process. PPS was dissolved in DPA at high temperatures to form a homogeneous solution. The solution was cooled, initiating phase separation and eventually forming a solidified PPS network around DPA-rich …
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Materials and Nanostructured Coatings for Soft Tissue Regeneration
… PURs. Films, obtained by hot pressing, were thermally and mechanically characterized. They were all characterized by an elastomeric behaviour with elastic moduli ranging from 7 to 14 MPa. Contact Angle measurements revealed slightly hydrophobic film surfaces with contact angle values in the …