EFFECT OF IN-CORE BUTYLACRYLATE/STYRENE MASS RATIOS TO CORE-SHELL BASED STYRENE-ACRYLIC LATEX

Abstract

The paper researched the effect of mass fraction of butylacrylate/styrene in core polymer on the synthesis and properties of emulsion resins with a core-shell structure poly(n-butylacrylate–styrene–methacrylic acid)(1)/poly(styrene–methacrylic acid)(2). Emulsion polymerization method is carried out in two continuous stages at atmospheric pressure. The study results showed that when changing the mass ratio of butylacrylate/styrene in core polymer in the direction of reduced glass temperature (T_g), it significantly contributed to the impact resistance and the ability to create films at low temperature 5 °C, chemical immersion durability increases but hardness and dust resistance decrease.

Keywords: poly(n-butylacrylate–styrene–methacrylic acid)/poly(styrene–methacrylic acid), styrene-acrylic latex, copolymer, blend, core-shell- two-stage continuous polymerization