Polymeric Microspheres’ World

Lab of Fine Polymer

Institute of Polymer Sci. & Eng.

Tsinghua Univ., Beijing, China

Welcome to the

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• Different size, different morphology, different structure, different composition, different functional groups ….., more particularly, different properties and different applications!

• This is the world of polymeric microspheres!

• We can design them. Moreover, we can control and synthesize them in the Lab of Fine Polymer !

• Here you can find photos of several kinds of polymeric particles prepared in our Lab.

• How to prepare them? What are their applications? What are their forming mechanisms? We are fascinated in this world. If you are also interested in them and seeking for more information, please feel free to contact us.

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Main monomers: St, MMA; BA, EA, MA, EHMA,VAc, D4, TDI…

Functional Monomers: AA, MAA, HEMA, NaSS, amido-containing

monomers, MATS, GMA, AGE…

Crosslinker: DVB, EGDMA, Vi-D4…

Surfactant/disperser: cationic, anionic, nonionic …..

Initiator/catalyst: water-soluble type, oil-soluble type

Synthetic routes:

Emulsion polymerization (conversional, soap-free, variable processes)

Dispersion polymerization

Microemulsion polymerization

Miniemulsion polymerization

Phase inversion emulsification (alkyd, epoxy, PU, polyether, polyester)

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1. Submicrosized Polymeric Particles

with uniform structure

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300nm

with core-shell morphology

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300nm 300nm 300nm

with different size and different functional groups

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600nm 600nm 600nm

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600nm 600nm800nm

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600nm 600nm 600nm

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with mulberry-like morphology

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2. Nano-sized Polymeric Particles

with uniform structure with micro phase separation structure

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with strawberry-like morphologywith core/shell morphology

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with mulberry-like morphology

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3. Micro-sized Polymeric Particles

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4. Submicrosized Polymeric Particles with Nano-porous Morphologies

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300nm

300nm 300nm

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800nm

800nm 800nm

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800nm 800nm 800nm

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400nm 800nm

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60

0nm

600

nm

600

nm

600

nm

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300nm

200n

m30

0nm

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600nm 600nm 600nm

5. Microsized Polymeric Particles with large porous Morphologies

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600nm 600nm 600nm