Long chain-based aliphatic polyamide (LCPA) refers to polyamides whose number of methylene groups between two neighbor amide groups on the main chain is more than or equal to 10. Compared with traditional short-chain polyamides

LCPA has lower density of amide groups in molecular structure

which makes it have lower water absorption

breaking elongation

rigidity and toughness balance

dimensional stability and molding performance. Therefore

it is widely used in automotive hoses

electronics and other fields. In the past three decades

LCPA materials have been developed rapidly

based on the development of LCPA monomer preparation technology synthesized by bio-fermented resources with independent intellectual property in China. The research on the preparation and modification technology of LCPA has become an important research direction for LCPA-based engineering plastics. This paper firstly gives a brief overview of LCPA. And then it starts with the preparation methods of LCPA monomer. Next

the paper introduces the preparation methods of LCPA polymer

classifiedly including their suitable monomers

their advantages and disadvantages. Finally

it reviews the progress of LCPA’s application modification in the last four years

mainly including high-performance and functional modification

and the prospect is also given. These contents have played a certain reference role in the selection of LCPA synthesis methods and suitable modification methods for different properties and functions in the future.