Research Article

Synthesis of Controllable Carboxylated Polystyrene Microspheres by Two-Step Dispersion Polymerization with Hydrocarbon Alcohols

Figure 3

The effect of first-step reaction time on the carboxyl content on the surface (reaction conditions: mPVP:mSt = 0.20; mAMBN:mSt = 0.02; St wt% = 20%; ethanol as solvent; AA wt% = 7).