Low molecular fluoropolymers have a special status in the defense industry as the important new functional materials. Meanwhile, as high-tech strategic materials, they have attracted more attention. Low molecular fluoropolymers, not only have excellent performance of traditional fluoropolymers, but also have irreplaceable characteristics. In the present study, the preparation, functionalization, and properties of low molecular fluoropolymers are reviewed. The study highlights the research progress in the preparation and functionalization methods. The properties of low molecular fluoropolymers are also summarized. Finally, the future development of low molecular fluoropolymers is prospected.

Contents
1 Introduction
2 Preparation methods of low molecular fluoropolymers
2.1 Copolymerization method
2.2 Oligomerization method
2.3 ITP method
2.4 Functional initiator method
2.5 Oxidative degradation method
3 Functionalization methods of low molecular fluoropolymers
3.1 Functional monomer method
3.2 Functional group transformation method
3.3 Functional monomer and group transformation method
4 Properties of low molecular fluoropolymers
4.1 Processing property
4.2 Physical property
5 Conclusion and outlook