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Preparation and Characterization of Soap-Free Styrene-Acrylate Emulsion Surface Sizing Agent

FU Xiao-lon

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Abstract

Using Fenton's reagent as initiator, cationic starch as main chain, the styrene(St), butyl acrylate(BA), rosin, N-hydroxymethyl acrylamide(HEA) and dimethyl amino ethyl methacrylate(DM) as main raw monomers, the soap-free emulsion sizing agent based on cationic starch grafted by styrene-acrylate comonomer was prepared by free-soap emulsion polymerization, and the structure and properties of the copolymer were characterized with FT-IR, particle size analyzer, static contact angle and SEM. The results showed that the excellent performance and good sizing effects of styrene-acrylate copolymer emulsion were achieved when m(total monomers):m(starch)=2:1, m(H2 O2)=2.6%, m(St)/m(BA)=2.5, m(HEA)=0.3%, m(DM)=1.2%, the dosage of surface sizing agent was 0.4%.

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What this paper is about

Using Fenton's reagent as initiator, cationic starch as main chain, the styrene(St), butyl acrylate(BA), rosin, N-hydroxymethyl acrylamide(HEA) and dimethyl amino ethyl methacrylate(DM) as main raw monomers, the soap-free emulsion sizing agent based on cationic starch grafted by styrene-acrylate comonomer was prepared by free-soap emulsion polymerization, and the structure and properties of the copolymer were characterized with FT-IR, particle size analyzer, static contact angle and SEM. The results showed that the excellent performance and good sizing effects of styrene-acrylate copolymer emulsion were achieved when m(total monomers):m(starch)=2:1, m(H2 O2)=2.6%, m(St)/m(BA)=2.5, m(HEA)=0.3%, m(DM)=1.2%, the dosage of surface sizing agent was 0.4%.

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Available abstract

Using Fenton's reagent as initiator, cationic starch as main chain, the styrene(St), butyl acrylate(BA), rosin, N-hydroxymethyl acrylamide(HEA) and dimethyl amino ethyl methacrylate(DM) as main raw monomers, the soap-free emulsion sizing agent based on cationic starch grafted by styrene-acrylate comonomer was prepared by free-soap emulsion polymerization, and the structure and properties of the copolymer were characterized with FT-IR, particle size analyzer, static contact angle and SEM. The results showed that the excellent performance and good sizing effects of styrene-acrylate copolymer emulsion were achieved when m(total monomers):m(starch)=2:1, m(H2 O2)=2.6%, m(St)/m(BA)=2.5, m(HEA)=0.3%, m(DM)=1.2%, the dosage of surface sizing agent was 0.4%.

Key concepts: Styrene, Acrylate, Comonomer, Copolymer, Emulsion polymerization, Cationic polymerization, Polymer chemistry, Emulsion

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