研究了聚3-羟基丁酸酯(PHB)分别从熔体薄膜和溶液中结晶时的球晶结构和形态,提出了在两种不同结晶条件下环带球晶的形成机理.当PHB从熔体薄膜中结晶时,由于二维生长的限制,晶体的不连续生长是球晶形成环带结构的主要原因,而当PHB从溶液中结晶时,片晶生长的扭曲取向导致了球晶环带结构的形成. The spherulite structure and morphology of poly 3-hydroxybutyrate (PHB) crystallized from melt films and solutions respectively were studied, and the formation mechanism of peridotrophic spherulites under two different crystallization conditions was proposed. In the case of bulk thin films, the discontinuous growth of crystals is the main reason for the formation of spherulites due to the limitation of two-dimensional growth. When PHB is crystallized from solution, the twisting orientation of the spherulites leads to spherulites The formation of the structure.