초록 |
The highly crosslinked stable spherical microspheres were successfully synthesized using styrene and three crosslinking agents having different number of functional groups in comonomer using the precipitation polymerization in the absence of a stabilizing agent. The concentration of three crosslinking agents plays a pivotal role not only in the formation of individually stable microspheres but also in the polymerization characteristics including the final size, yield of the polymerization, and thermal properties. The number-average diameter of the poly (S-co-EGDMA), poly (S-co- TMPTMA), and poly (S-co- PETRA) is in the range of 4.1~3.06 ㎛, 3.94~3.03 ㎛ and 2.77~1.66 ㎛, respectively. |