Bacterial cellulose nano-fiber is a kind of natural nano material with excellent biocompatibility and mechanical properties. It also has the advantages of high purity

high degree of polymerization

high crystallinity

good water holding capacity and large aspect ratio. A variety of methods can be used to combine bacterial cellulose nano-fiber and polymers. The key challenge is how to modify it to improve the interfacial compatibility of nano-fiber and polymer and the uniformity of nano-fiber in polymer

thereby improving the properties of composites and expanding its applications. In this paper

the latest research progress on the modification of bacterial cellulose nano-fiber and their composites are briefly reviewed

including modification mechanisms

preparation methods

performance characteristics and potential applications.