Emulsifier‐free emulsion polymerization of styrene with 4‐vinylbenzoic acid: Kinetics and distribution of the carboxyl groups

Abstract

Carboxylated polystyrene particles were prepared by the batch emulsion polymerization of styrene (Sty) with 4-vinylbenzoic acid (VBA) in the absence of an emulsifier with K 2 S 2 O 8 as a free-radical initiator. The effect changes in the ratio of potassium hydroxide to VBA and the concentration of VBA to Sty on the kinetics, monomer conversion, distribution of carboxyl groups, and particle size distribution were analyzed. The stability of the latices was evaluated.

Improvement of Mechanical Properties of Anisotropic Glassy Polystyrene by Introducing Heat-Labile Reversible Bonds

“…13,14 Furthermore, statistical poly(styrene-co-4-vinylbenzoic acid) copolymers have been prepared by free radical polymerization either in homogeneous solution 15,16 or in emulsion. 17 However, the preparation of entangled, well-defined statistical poly(styrene-co-4-vinylbenzoic acid) by RAFT polymerization has not previously been the subject of detailed investigations to the best of our knowledge.…”

“…The introduction of carboxylic acid groups into well-defined copolymers has been accomplished using reversible addition–fragmentation chain-transfer (RAFT) polymerization, which is tolerant to a wide range of functional groups. − In particular, this method has been used to prepare amphiphilic poly­(styrene- b -4-vinylbenzoic acid) block copolymers. , Furthermore, statistical poly­(styrene- co -4-vinylbenzoic acid) copolymers have been prepared by free radical polymerization either in homogeneous solution , or in emulsion . However, the preparation of entangled, well-defined statistical poly­(styrene- co -4-vinylbenzoic acid) by RAFT polymerization has not previously been the subject of detailed investigations to the best of our knowledge.…”