A NEW METHOD FOR SYNTHESIS OF MICRON-SIZED POLYAMIDE 12 MICROSPHERES VIA PHASE INVERSION MECHANISM

摘要

Micron-sized polyamide 12 (PA 12) microspheres were firstly synthesized through phase-inversion PA12/PS blends via phase inversion mechanism. The resulting PA12 microspheres are regular sphericity, with volume-average diameter about 19.7 microns and narrow size distribution (2.5), as confirmed by scanning electron microscopy (SEM) and Laser diffraction size Analyzer. Furthermore, the study on the PA12/PS blends confirmed that the morphology of PA12 microspheres are closely related to the content of PS in the blends, which indicated that the formation of the PA12 microspheres in the PA12/PS blends can be elucidated via a phase inversion mechanism.