Research Article

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

Table 5

Synthesis experiment conditions in investigation of effect of acrylic acid concentration on carboxyl content of microspheres.

SolventmPVP:mStmAMBN:mSSt wt%Reaction time of the first stepAA wt%

1Methanol0.200.0220%1 h7%

2Ethanol0.200.0220%1 h7%
10.5

3Propanol0.200.0220%1 h7%
14%
21%

4Butanol0.200.0220%1 h7%
14%
21%
28%

5Pentanol0.200.0220%1 h7%
14%