Department of Chemical Engineering, Tsinghua University

State Key laboratory of Chemical Engineering

Lu Group

3.Alumni

Xiaojing Liu

2019-now: Advanced Product Development, Amperex Technology Limited (R&D Engineer)

2014-2019: Department of Chemical Engineering, Tsinghua University (Doctor)

2010-2014: Department of Chemical Engineering, China University of Petroleum (Bachelor)

Email: sdliuxiaojing@163.com

Project: Efficient preparation of polymer nanoparticles via emulsion polymerization
 

1. Simulation of mixing and flow in the microreactor

Preparation of colloidal magnetic nanoclusters (MNCs) using a novel micro-mixing method, which proved to be efficient, scalable, and reliable for the controlled synthesis of monodispersed MNCs with mean size facilely adjusted from 30 nm to 200 nm and dramatically reduced the use of surfactants in the preparation of the Fe3O4 MNCs. [4]

2. Flow synthesis of polystyrene nano-latex

The mixed nonionic-anionic emulsifier TX-100/SDBS with the molar ratio of 4:1 performed much better in stabilizing pre-emulsion than anionic emulsifier SDBS and guaranteed reliable operation as well as fast and controllable conversion in tubular micro-reactor to prepare monodispersed spherical nanoparticles with PDI of size as small as 0.09. [2]

3. Kinetics and mechanism study

Evidences are provided to the generation of free radicals in micelles when using oil-soluble initiator in emulsion polymerization. Advantages of using oil-soluble initiator in emulsifier adaptability and product control are also revealed.[3]

4. Functional nanoparticles

1. Tween 80 coated magnetic polymer nanocomposite particles (NCPs), as functional materials with good biological application prospect.
2. PVA coated poly(styrene-co-4-chlorostyrene) latexes and poly(styrene-co-methyl methacrylate) latexes. [1]
3. Magnetic polymer nanocatalyst for Suzuki coupling reaction.

Publication:
  1. Liu X., et al. Synthesis of polystyrene latex via emulsion polymerization with poly(vinyl alcohol) as sole stabilizer. J. Appl. Polym. Sci. 2017, 134 (32), 45111.
  2. Liu X., et al. Continuous flow synthesis of polystyrene nanoparticles via emulsion polymerization stabilized by a mixed nonionic and anionic emulsifier. Ind. Eng. Chem. Res. 2017, 56(34), 9489.
  3. Liu X., et al. Highly efficient and flexible preparation of water-dispersed Fe3O4 nanoclusters using a micro-mixer. Particuology. Accepted 25 June 2018.
  4. Liu X., et al. A comparative study on emulsion polymerization processes of styrene initiated by water-soluble and oil-soluble initiators. Chinese J. Polym. Sci. Doi: 10.1007/s10118-019-2186-3.