Morphologies and dynamic mechanical properties of core-shell emulsifier-free latexes and their copolymers for P(BA/MMA)/P(MMA/BA) and P(BA/MMA)/PSt systems in the presence of AHPS

• Published in: Journal of applied polymer science Vol. 86; no. 12; pp. 3078 - 3084
• Main Authors: Guo, Tian-Ying, Tang, Guang-Liang, Hao, Guang-Jie, Song, Moud-Dao, Zhang, Bang-Hua
• Format: Journal Article
• Language: English
• Published: New York Wiley Subscription Services, Inc., A Wiley Company 13.12.2002; Wiley
• Subjects: acrylates; Applied sciences; core-shell polymers; emulsifier-free emulsion polymerization; Exact sciences and technology; latex; Organic polymers; Physicochemistry of polymers; Properties and characterization; Solution and gel properties; styrene; Particle size; Emulsion copolymerization; Dynamic mechanical properties; Morphology; Styrene polymer; Crosslink agent; Experimental study; Methyl methacrylate copolymer; Butyl acrylate copolymer; Glass transition temperature; Latex
• ISSN: 0021-8995; 1097-4628
• DOI: 10.1002/app.11331

Different poly(methyl methacrylate/n‐butyl acrylate)/poly(n‐butyl acrylate/methyl methacrylate) [P(BA/MMA)/P(MMA/BA)] and poly(n‐butyl acrylate/methyl methacrylate)/polystyrene [P(BA/MMA)/PSt] core‐shell structured latexes were prepared by emulsifier‐free emulsion polymerization in the presence of hydrophilic monomer 3‐allyloxy‐2‐hydroxyl‐propanesulfonic salt (AHPS). The particle morphologies of the final latexes and dynamic mechanical properties of the copolymers from final latexes were investigated in detail. With the addition of AHPS, a latex of stable and high‐solid content (60 wt %) was prepared. The diameters of the latex particles are ∼0.26 μm for the P(BA/MMA)/P(MMA/BA) system and 0.22–0.24 μm for the P(BA/MMA)/PSt system. All copolymers from the final latexes are two‐phase structure polymers, shown as two glass transition temperatures (Tgs) on dynamic mechanical analysis spectra. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 86: 3078–3084, 2002