A lamellar structure is a layered structure, often found in crystalline polymers or block copolymers. In a lamellar structure, the polymer chains are arranged in parallel layers or sheets. This arrangement can result from the segregation of different blocks in a block copolymer or from the crystallization of polymer chains. Lamellar structures can influence the mechanical, optical, and barrier properties of polymers.

层状结构是一种分层结构，常见于结晶聚合物或嵌段共聚物中。在层状结构中，聚合物链排列成平行的层或片。这种排列可能是由于嵌段共聚物中不同嵌段的隔离或聚合物链的结晶造成的。层状结构会影响聚合物的机械、光学和阻隔性能。