Method for the production of fabricated hollow microspheroids
The method relates to the fabrication of a polymer microspheres comprised of an asymmetric layer surrounding a hollow interior. The fabricated hollow microsphere is generated from a nascent hollow microsphere comprised of an inner core of core fluid surrounded by a dope layer of polymer dope, where the thickness of the dope layer is at least 10% and less than 50% of the diameter of the inner core. The nascent hollow microsphere is exposed to a gaseous environment, generating a vitrified hollow microsphere, which is subsequently immersed in a coagulation bath. Solvent exchange produces a fabricated hollow microsphere comprised of a densified outer skin surrounding a macroporous inner layer, which surrounds a hollow interior. In an embodiment, the polymer is a polyimide or a polyamide-imide, and the non-solvent in the core fluid and the coagulation bath is water. The fabricated hollow microspheres are particularly suited as solvent supports for gas separation processes.
- Research Organization:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
- Sponsoring Organization:
- USDOE
- Assignee:
- U.S. Department of Energy (Washington, DC)
- Patent Number(s):
- 9,050,579
- Application Number:
- 13/622,001
- OSTI ID:
- 1183943
- Resource Relation:
- Patent File Date: 2012 Sep 18
- Country of Publication:
- United States
- Language:
- English
Fabrication of hollow, spherical polymeric “micropillows” using a dual layer spinneret
|
journal | March 2011 |
Parametric Study of Acoustic Excitation-Based Glycerol-Water Microsphere Fabrication in Single Nozzle Jetting
|
journal | September 2010 |
Preparation and characterization of ionic liquid polymer microspheres [PEEKWC/DMF/CYPHOS IL 101] using the phase-inversion technique
|
journal | September 2012 |
Similar Records
Effects of coating solvent and thermal treatment on transport and morphological characteristics of
Hollow fiber-supported designer ionic liquid sponges for post-combustion CO2 scrubbing