A wonderful trip in the Polymeric
Functional polymeric microspheres are those particles with
reactive and/or functional groups on their surface or inside
them, or with special morphologies, and have many direct
and potential applications in many aspects. The design,
the control and the application of different kinds of functional
polymeric microspheres are the first 3 important aspects
in this area. Our research interests include micron-sized,
submicron-sized and micron-sized functional polymer.
(a) Porous polymer latex particles.
Using different emulsion polymerization processes combined
with different post-treatment methods, several kinds of
submicron or micron sized porous latex particles with controllable
particle size and hollow volume inside them have been prepared
in the absence/presence of surfactants. These kinds of particles
are expected to be used in special coatings (sound and vibration
damping, for example), biochemical and biomedical fields,
polymer pigment, paper manufacturing additive, water-maintaining
(b) Monodispersed polymer particles
with surface active groups.
Monodispersed polymer particles with surface groups (such
as -COOH, -OH, -SO3H etc.) have been synthesized by means
of Dispersion Polymerization, Emulsion Polymerization, Microemulsion
Polymerization, or Miniemulsion Polymerization in our Lab.
The diameter can be controlled in the range from several
dozen nanometers to several microns, and the distribution
of active groups can be managed as well. The applications
of these monodispersed polymer particles are under consideration.
(c) Polymer particles for bio-technique
To meet the need of biochemical and biomedical application,
specific polymer particles should be designed and prepared.
We are interested in the bio-molecules immobilization, the
target delivery, and controlled release of active. In this
field, two kinds of submicron sized soap-free latexes particles
have been synthesized and used as immobilizing carriers
of enzyme and medicine in our Lab. The immobilizing method,
the stability and the activity of the immobilized biomaterials,
as well as the relationship between them have been investigated.
Diagnosis polymer particle is another interest of ours.
Micron sized polymer particles with several microns in diameter
and with surface functional groups have been synthesized,
and their applications are being explored.
(d) Self-colored polymer latex particles.
To enhance the color stability of waterborne polymer system,
novel unsaturated monomers with chromophore group were synthesized
and used to copolymerize with other monomers, the polymerization
and the relationship between colloidal properties and materials
were investigated. The color stability of the latex films
can be significantly improved.
(e) Polymer particles with different
Polymer particle morphology is so amusing and supernatural,
and in common, we can control it! We have made several kinds
of particles with different morphologies such as core/shell,
strawberry-like, porosity, IPN and the like.