Synthesis of Submicron Polymer Functional Complex Latex via Miniemulsion Polymerization
Date Issued
2005-05-25
Date
2005-05-25
Author(s)
DOI
932216E002013
Abstract
In this research, the thermoresponsive composite latex
particles were prepared via W/O miniemulsion polymerization.
Fe3O4 nanoparticles were homogeneously dispersed inside the
poly(NIPAAm-co-MAA) latex particles. In the first step, PAA
oligomers were used as the stabilizer to produce a stable
water-based Fe3O4 ferrofluid, which could mix well with the
water-soluble monomers. In the second step, the Fe3O4 /
poly(NIPAAm-co-MAA) composite latex particles were
synthesized via W/O miniemulsion polymerization. This
polymerization proceeded in cyclohexane at room temperature
with Span80 as the emulsifier, NIPAAm as thermoresponsive
monomer, MAA as a comonomer with -COOH functional groups,
and APS / SMBS as the redox initiator system. The distribution of
Fe3O4 nanoparticles inside the composite latex particles was
expected to be homogeneous. The nucleation and morphology of
the composite latex particles were mainly controlled by the
concentration of surfactant, Span80 in cyclohexane. The
properties of the composite latex were examined with several
instruments such as DSC and TGA. Finally, the
superparamagnetic and thermoresponsive characteristics of this functional composite latex were also investigated.
Subjects
thermoresponsive
superparamagnetic
N-isopropylacrylamide
inverse miniemulsion
Publisher
臺北市：國立臺灣大學化學工程學系暨研究所
Type
report
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