Bulletin of the American Physical Society
APS March Meeting 2011
Volume 56, Number 1
Monday–Friday, March 21–25, 2011; Dallas, Texas
Abstract: S1.00075 : Synthesis and Characterization of Thermally Responsive Polysaccharide Nanoparticles
Author:
Environmentally-manipulable nanoparticles (microgels) have been synthesized
from the amphiphilic polymer hydroxypropyl-cellulose and characterized using
dynamic and static light scattering spectroscopies. Careful synthesis
studies have revealed dependences of microgel size and structure on polymer
molecular weight, polymer concentration, salt concentration, and crosslinker
density. An understanding of these dependences has allowed the synthesis of
stable, largely spherical, and relatively small (about 100nm) and
monodisperse microgels. The synthesized microgels exhibit a volume phase
transition between temperatures of 40 and 41C, under which particles undergo
a reversible 15-50-fold change in volume. The microgel structure, dynamics,
and longevity have been systematically studied by light scattering both
below and above the transition temperature.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2011.MAR.S1.75
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