Self-Stabilized Precipitation Polymerization of Vinyl Chloride and Maleic Anhydride

• DOI: 10.1021/acs.iecr.2c03905
• Publication Date: 2023-02-20T15:47:23Z
• Authors: Hongyi Shu; Changtong Song; Liu Yang; Chuang Wang; Dong Chen; Xianhong Zhang; Yuhong Ma; Wantai Yang
• Keywords: Maleic anhydride; Precipitation polymerization; Suspension polymerization; Emulsion polymerization; Vinyl acetate

Self-stabilized precipitation (2SP) polymerization, a powerful tool for synthesizing and functionalizing uniform polymeric microspheres, is commonly applied in the heterogeneous copolymerization of olefinic compounds with maleic anhydride (MAH). In present work, we exploited 2SP polymerization vinyl chloride monomer (VCM) MAH using bis(4-tert-butylcyclohexyl) peroxydicarbonate (TBCP) as initiator an isoamyl acetate/n-hexane binary mixture solvent. The effects conditions such solvent composition, feed ratio, total concentration, concentration on size morphology resultant poly[(vinyl chloride)-co-(maleic anhydride)] (PVM) microspheres were investigated systematically. results showed that clean well-dispersed PVM particle sizes ranging from 185 to 335 nm successfully prepared when solubility parameter was range 15.92–16.22 MPa1/2. By simply tuning ratios, copolymers (Mn = 14400–21400 g/mol) high content (∼50 mol %) obtained, which difficult achieve either conventional suspension or emulsion polymerization. More interestingly, excellent water alkaline solution molar fraction more than 40%, making anhydride-containing highly attractive promising functional materials.