نتایج جستجو برای: thermally induced phase separation tips
تعداد نتایج: 1653195 فیلتر نتایج به سال:
Thermally induced phase separation (TIPS) and thermal imidization were used to prepare PI-based monoliths in sequence. The hybridized PI (PI-co-POSS) exhibit potential liquid diode application achieve oil–water separation.
Mesoporous polyacrylonitrile (PAN) monolith has been fabricated by a template-free approach using the unique affinity of PAN towards a water/dimethyl sulfoxide (DMSO) mixture. A newly developed Thermally Induced Phase Separation Technique (TIPS) has been used to obtain the polymer monoliths and their microstructures have been controlled by optimizing the concentration and cooling temperature.
In this study, a nonsolvent thermally-induced phase separation (NTIPS) method was first proposed to fabricate hydrophilically-modified poly(vinylidene fluoride) (PVDF) membranes to overcome the drawbacks of conventional thermally-induced phase separation (TIPS) and nonsolvent-induced phase separation (NIPS) methods. Hydrophilically-modified PVDF membranes were successfully prepared by blending ...
In high-viscosity polymer solutions and blends, temperature variations during the quench process of thermally-induced phase separation (TIPS) influence dynamics thermodynamics separation. Hence, this study aims to investigate impact on morphology formation TIPS process. First, temporal is investigated by coupling a transient heat conduction model Cahn–Hilliard equation, results are compared wit...
Gelatin is considered as a partially degraded product of collagen and it is a biodegradable polymer which can be used to produce scaffolds for tissue engineering. Three-dimensional, porous gelatin scaffolds were fabricated by thermally induced phase separation and freeze-drying method. Their porous structure and pore size were characterized by scanning electron microscopy. Scaffolds with differ...
The mechanical behaviour of a new type of open-cell foam made by a thermally induced phase separation (TIPS) process was investigated. Foams made by the TIPS process are characterized by cell sizes which are 10-100 times smaller than conventional foam materials. In this work, the linear elastic modulus of these foams in dynamic tension/compression was measured. A comparison was made with the th...
In tissue engineering, polymer-based scaffolds play an important role via cell adhesion, proliferation, and regeneration in three-dimensional (3D) structures, exhibiting great potential a variety of tissues. For fabrication scaffolds, the particulate-leaching method thermally-induced phase separation (TIPS) are popular procedures. However, complete interconnectivity porous structure has not bee...
Phase separation of a polymer solution exhibits a peculiar behavior when induced in a nanoconfinement. The energetic constraints introduce additional interactions between the polymer segments that reduce the number of available configurations. In our work, this effect is exploited in a one-step strategy called nanoconfined-Thermally Induced Phase Separation (nc-TIPS) to promote the crystallizat...
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