Home > Press > New Method Found for Synthesizing Polymeric Nano-Membranes
Abstract:
Iranian researchers at Kashan University managed to synthesize a nano-membrane with diverse pores through photo-polymerization process.
New Method Found for Synthesizing Polymeric Nano-Membranes
Tehran, Iran | Posted on September 5th, 2011
"The main reason for using new membranes having properties intermediate to those of reverse osmosis and ultrafiltration is to separate monovalent and divalent salts as well as non-ionic solutes with molecular weights less than 2000 g/mol. The synthesis of nano-membrane using photo-polymerization process is investigated in this research", Dr. Ahmad Akbari, faculty member at Kashan University, said.
Pointing to the advantages of nano-membranes, he said, "Ability of ion separation from solutions at fairly low pressures is one of the unique features of nano-membranes, which is a result of having ionic charges on their surface. Even if their pores are greater than ionic radius, the solution ions are highly captured."
Elaborating on the synthesis procedure, Dr. Akbari said, "Casting solution was prepared by solving a definite amount of polysulfone in 1-methyl 2-pyrolidon. Then poly ethylene glycol was added as filler and additive and a polymeric film was produced. In order to convert the initial ultrafiltration membranes to nano-membrane, photo-polymerization process was practiced by means of UV radiation."
The results include reduction of membrane permeability by increasing the concentration of monomer (acrylic acid) in the solution during UV radiation.
Lengthening the UV radiation period in photo-polymerization will increase polymer concentration at membrane surface and will decrease membrane permeability.
####
For more information, please click here
Copyright © Fars News Agency
If you have a comment, please
Contact us.
Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.
Bookmark:
News and information
Conference Scheduled June 5-7 on Safe Use of Nanotechnology in Environmental Remediation May 23rd, 2013
Heinrich Rohrer dies at 79; a father of nanotechnology: With IBM colleague Gerd Binnig, Rohrer invented the scanning tunneling microscope, which can show individual atoms on a surface and move them around May 23rd, 2013
Gold nanocrystal vibration captured on billion-frames-per-second film May 23rd, 2013
Glowing Plant Releases Maker Kit, Enabling Anyone to Make a Glowing Plant at Home: Glowing Plant seeks funds via crowdfunding and raises almost $400,000 May 23rd, 2013
Discoveries
Gold nanocrystal vibration captured on billion-frames-per-second film May 23rd, 2013
Whirlpools on the Nanoscale Could Multiply Magnetic Memory: At the Advanced Light Source, Berkeley Lab scientists join an international team to control spin orientation in magnetic nanodisks May 22nd, 2013
Bacterial spare parts filter antibiotic residue from groundwater May 22nd, 2013
UofL scientists uncover how grapefruits provide a secret weapon in medical drug delivery May 22nd, 2013
Materials
Gold nanocrystal vibration captured on billion-frames-per-second film May 23rd, 2013
IDTechEx launches online Market Intelligence Portal May 23rd, 2013
Weird science: Crystals melt when they're cooled May 22nd, 2013
INSCX™ exchange announces substantial increase in capital designated to provide Trade Finance for registered Nanomaterial Producers May 21st, 2013
Announcements
Conference Scheduled June 5-7 on Safe Use of Nanotechnology in Environmental Remediation May 23rd, 2013
Heinrich Rohrer dies at 79; a father of nanotechnology: With IBM colleague Gerd Binnig, Rohrer invented the scanning tunneling microscope, which can show individual atoms on a surface and move them around May 23rd, 2013
Gold nanocrystal vibration captured on billion-frames-per-second film May 23rd, 2013
Glowing Plant Releases Maker Kit, Enabling Anyone to Make a Glowing Plant at Home: Glowing Plant seeks funds via crowdfunding and raises almost $400,000 May 23rd, 2013