热处理对生物可降解PBST纤维聚集态结构和弹性的影响

Biodegradable poly(butylene succiante-co-terephthalate) (PBST) fibers were heat-set under different temperatures, different drawing ratios and different heat-setting times. The development of aggregation structure and flexible properties of PBST fibers before and after treated were investigated by tensile test, differential scanning calorimeter (DSC) and polarizing optical microscopy (POM) measurement. Research results indicated that the flexible properties of PBST fibers exhibit regular changes with the heat-setting conditions, and corresponding changes of aggregation structure agree with the development of flexible properties.