Membranes having aligned 1-D nanoparticles in a matrix layer for improved fluid separation

Title: Membranes having aligned 1-D nanoparticles in a matrix layer for improved fluid separation

Membranes for fluid separation are disclosed. These membranes have a matrix layer sandwiched between an active layer and a porous support layer. The matrix layer includes 1-D nanoparticles that are vertically aligned in a porous polymer matrix, and which substantially extend through the matrix layer. The active layer provides species-specific transport, while the support layer provides mechanical support. A matrix layer of this type has favorable surface morphology for forming the active layer. Furthermore, the pores that form in the matrix layer tend to be smaller and more evenly distributed as a result of the presence of aligned 1-D nanoparticles. Improved performance of separation membranes of this type is attributed to these effects.

Inventors:: Revanur, Ravindra; Lulevich, Valentin; Roh, Il Juhn; Klare, Jennifer E.; Kim, Sangil; Noy, Aleksandr; Bakajin, Olgica

Issue Date:: 2015-12-22

OSTI Identifier:: 1233379

Assignee:: Porifera, Inc. ARPA-E

Patent Number(s):: 9,216,391

Application Number:: 13/428,843

Contract Number:: AR0000025

Resource Relation:: Patent File Date: 2012 Mar 23

Research Org:: Porifera, Inc., Hayward, CA (United States)

Sponsoring Org:: USDOE

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Full Text
View Full Text

Other works cited in this record:

Thermoplastic composition for setting bandages and a solventless process for the manufacture thereof
patent, April 1982

Usukura, Koji
US Patent Document 4,326,509
URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect2=PTO1&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&d=PALL&RefSrch=yes&Query=PN%2F4326509

Drug delivery system based on chronobiology—A review
journal, November 2010

Mandal, Asim Sattwa; Biswas, Nikhil; Karim, Kazi Masud
Journal of Controlled Release, Vol. 147, Issue 3, p. 314-325
DOI: 10.1016/j.jconrel.2010.07.122

Influence of membrane support layer hydrophobicity on water flux in osmotically driven membrane processes
journal, June 2008

McCutcheon, Jeffrey R.; Elimelech, Menachem
Journal of Membrane Science, Vol. 318, Issue 1-2, p. 458-466
DOI: 10.1016/j.memsci.2008.03.021

Osmotic drug delivery: a review of the patent literature
journal, July 1995

Santus, Giancarlo; Baker, Richard W.
Journal of Controlled Release, Vol. 35, Issue 1, p. 1-21
DOI: 10.1016/0168-3659(95)00013-X

Modification of porous poly(vinylidene fluoride) membrane using amphiphilic polymers with different structures in phase inversion process
journal, March 2008

Zhao, Yong-Hong; Qian, Yan-Ling; Zhu, Bao-Ku
Journal of Membrane Science, Vol. 310, Issue 1-2, p. 567-576
DOI: 10.1016/j.memsci.2007.11.040

Similar records in DOepatents and OSTI.GOV collections:

Preparation of aligned nanotube membranes for water and gas separation applications

Patent Lulevich, Valentin ; Bakajin, Olgica ; Klare, Jennifer E. ; Noy, Aleksandr

Fabrication methods for selective membranes that include aligned nanotubes can advantageously include a mechanical polishing step. The nanotubes have their ends closed off during the step of infiltrating a polymer precursor around the nanotubes. This prevents polymer precursor from flowing into the nanotubes. The polishing step is performed after the polymer matrix is formed, and can open up the ends of the nanotubes.
Full Text Available January 2016
Power converter having improved fluid cooling

Patent Meyer, Andreas A. ; Radosevich, Lawrence D. ; Beihoff, Bruce C. ; Kehl, Dennis L. ; Kannenberg, Daniel G.

A thermal support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support, which may be controlled in a closed-loop manner. Interfacing between circuits, circuit mounting structure, and the support provide for greatly enhanced cooling. The support may form a shield from both external EMI/RFI and from interference generated by operation of the power electronic circuits. Features may be provided to permit and enhance connection of the circuitry to external circuitry, such as improved terminal configurations. Modular units may be assembled that may be coupled tomore »« less
Full Text Available March 2007
Immobilized fluid membranes for gas separation

Patent Liu, Wei ; Canfield, Nathan L ; Zhang, Jian ; Li, Xiaohong Shari ; Zhang, Jiguang

Provided herein are immobilized liquid membranes for gas separation, methods of preparing such membranes and uses thereof. In one example, the immobilized membrane includes a porous metallic host matrix and an immobilized liquid fluid (such as a silicone oil) that is immobilized within one or more pores included within the porous metallic host matrix. The immobilized liquid membrane is capable of selective permeation of one type of molecule (such as oxygen) over another type of molecule (such as water). In some examples, the selective membrane is incorporated into a device to supply oxygen from ambient air to the device formore »« less
Full Text Available March 2014
Vertically aligned gas-insulated transmission line having particle traps at the inner conductor

Patent Dale, Steinar J.

Gas insulated electrical apparatus having first and second conductors separated by an insulating support within an insulating gas environment, and particle traps disposed along the surface of the high potential conductor for trapping and inactivating foreign particles which may be present within the insulating gas medium. Several embodiments of the invention were developed which are particularly suited for vertically aligned gas insulated transmission lines. The particle traps are grooves or cavities formed into the walls of the tubular inner conductor, without extending into the hollow portion of the conductor. In other embodiments, the traps are appendages or insert flanges extendingmore »« less
Full Text Available January 1984
Gas Separation Using Organic-Vapor-Resistent Membranes In Conjunctin With Organic-Vapor-Selective Membranes

Patent Baker, Richard W. ; Pinnau, Ingo ; He, Zhenjie ; Da Costa, Andre R. ; Daniels, Ramin ; Amo, Karl D. ; Wijmans, Johannes G.

A process for treating a gas mixture containing at least an organic compound gas or vapor and a second gas, such as natural gas, refinery off-gas or air. The process uses two sequential membrane separation steps, one using membrane selective for the organic compound over the second gas, the other selective for the second gas over the organic vapor. The second-gas-selective membranes use a selective layer made from a polymer having repeating units of a fluorinated polymer, and demonstrate good resistance to plasticization by the organic components in the gas mixture under treatment, and good recovery after exposure to liquidmore »« less
Full Text Available June 2003