Page 83 - IJB-9-5

International Journal of Bioprinting Biocompatible BSA-GMA and TPP of 3D hydrogels with free radical type I photoinitiator

Figure 3. The effect of BSA-GMA concentration, methacrylation degree, and laser power on BSA-GMA polymerization line. SEM images of the
polymerization lines of (A) R D , (B) R D , (C) R D , (D) R D , and (E) R D . (F) AFM image of R D polymerization line. (G) The effect of laser
52
40
40
30
52
40
52
35
15
40
20
52
power on the line width of BSA-GMA with different concentrations and degrees of methacrylation.
structures were incomplete. Figure 3A–C shows SEM images decreased from 18 to 5.6 mW (Figure 3C-E). Figure S3
of the polymerization lines for different concentrations of (Supplementary File) shows the line structure obtained
BSA-GMA, with the threshold power decreasing from by TPP with 30 wt% BSA as monomer and 0.5 wt% LAP
13.6 to 5.6 mW as the BSA-GMA concentration increases as initiator. The TPP process of the BSA+LAP system
from 20 wt% to 40 wt%. As the degree of methacrylation only occurs at the laser power range of 20–23.7 mW. The
increased from 15% to 52%, the threshold power TPP ability of the pure BSA system was poor compared
Volume 9 Issue 5 (2023) 75 https://doi.org/10.18063/ijb.752