publication . Other literature type . Article . 2007

Synthesis of porous poly(N-isopropylacrylamide) gel beads by sedimentation polymerization and their morphology

Takehiko Gotoh;
  • Published: 15 Apr 2007
  • Publisher: Wiley
Sedimentation polymerization of aqueous solutions of N-isopropylacrylamide (NIPA) was carried out to prepare porous poly(N-isopropylacrylamide) (PNIPA) beads. When small amounts of DMF and a radical accelerator were added to the monomer solution, the polymerization proceeded smoothly to give polymer beads with a very narrow size distribution. The rate of swelling of the resulting bead increased with increasing crosslinker content and was also affected by the type of crosslinker used. When amounts higher than 1 mol % N,N′-methylenebisacrylamide or 3 mol % diethylene glycol diacrylate (DEGDA) were used as a crosslinker, the resulting beads underwent rapid swelling...
Medical Subject Headings: technology, industry, and agriculture
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