Cationic and zwitterionic polymerizable surfactants - Quaternary ammonium dialkyl maleates. 2. Emulsion polymerization of styrene and butyl acrylate

Polymerizable cationic and zwitterionic dialkyl maleates with different hyd rophobic chain lengths (R = C10H21, C12H25, C16H33, C18H37) and different c ounterions (I, Br, HSO4) for the cationic hydrophilic part, as well as some similar surfactants, dialkyl succinates, were used in batch and seeded emu lsion polymerization of styrene and butyl acrylate. All surfactants, when u sed in emulsion polymerization, provide good stability to the styrene/butyl acrylate latices. A styrene/butyl acrylate latex prepared with sodium dode cyl sulfate (SDS)was used as a reference. Some stability tests for latices were performed, and the glass transition temperatures, as well as the molec ular weights of the polymers, were measured. Finally, films from two zwitte rionic latices were formed, and mechanical traction tests were performed as well as the measurements of water absorption.