Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Selection of variables and their levels.
| Independent Variables | Symbol | Levels | ||
|---|---|---|---|---|
| Low (−1) | Medium (0) | High (+1) | ||
| Grafting yield (%) | A | 30 | 40 | 50 |
| QCS: TPP (weight ratio) | B | 5:1 | 10:1 | 15:1 |
| QCS: Genipin (weight ratio) | C | 20:1 | 40:1 | 60:1 |
| Dependent Variables | Symbol | Constraints | ||
| Particle size (nm) | Y 1 | <200 | ||
| PDI | Y 2 | <0.3 | ||
| Zeta potential (mV) | Y 3 | |||
| Encapsulation efficiency (%) | Y 4 | Maximize | ||
