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

Table 1

Synthesis experiment conditions in investigation of the effect of first-step reaction time on the carboxyl content of the surface.

	Solvent	mPVP:mSt	mAMBN:mS	St wt%	Reaction time of the first step	AA wt%
1	Ethanol	0.20	0.02	20%	1 h	7%
2	Ethanol	0.20	0.02	20%	2 h	7%
3	Ethanol	0.20	0.02	20%	3 h	7%
4	Ethanol	0.20	0.02	20%	4 h	7%
5	Ethanol	0.20	0.02	20%	5 h	7%