The semibatch emulsifier-free emulsion copolymerization of methyl methacrylate (MMA) and n-butyl acrylate (BA) in the presence of 2-hydroxyethyl methacrylate (HEMA) initiated by K2S2O8 (PSP) was studied. The average p...The semibatch emulsifier-free emulsion copolymerization of methyl methacrylate (MMA) and n-butyl acrylate (BA) in the presence of 2-hydroxyethyl methacrylate (HEMA) initiated by K2S2O8 (PSP) was studied. The average particle diameter increases with an increase of total solids content, HEMA content, PSP content, ionic strength of the system and monomer feed rate, and decreases with the monomer feed ratio from 3/1 (MMA/BA mole.) to 1/3. The stability of this reaction system is improved by adding HEMA as nonionic comonomer. The high solids content (50%) latex with monodisperse particle can be obtained using this process.展开更多
The semibatch emulsifier-free emulsion copolymerization of methyl methacrylate(MMA and butyl acrylate (BA) in the presence of 2-hydroxyethyl methacrylate (HEMA)initiated by K2S2O8 (PSP) was studied. The latex particle...The semibatch emulsifier-free emulsion copolymerization of methyl methacrylate(MMA and butyl acrylate (BA) in the presence of 2-hydroxyethyl methacrylate (HEMA)initiated by K2S2O8 (PSP) was studied. The latex particles can maintain an appreciablestability during the emulsifier-free emulsion copolymerization of MMA and BA in thepresence of HEMA The average particle diameter increase with an increase of totalsolids content, HEMA content, PSP content, ioniC strength of the system and monomerfeed rate, and decrease with the monomer feed ratio From 3/1(MMA/BA;molar ratio.)to1/3. The stability of this reaction system is improved by adding HEMA as nonioniccomonomer High solids content (50%) latex with monodisperse particle can beobtained using this process.展开更多
文摘The semibatch emulsifier-free emulsion copolymerization of methyl methacrylate (MMA) and n-butyl acrylate (BA) in the presence of 2-hydroxyethyl methacrylate (HEMA) initiated by K2S2O8 (PSP) was studied. The average particle diameter increases with an increase of total solids content, HEMA content, PSP content, ionic strength of the system and monomer feed rate, and decreases with the monomer feed ratio from 3/1 (MMA/BA mole.) to 1/3. The stability of this reaction system is improved by adding HEMA as nonionic comonomer. The high solids content (50%) latex with monodisperse particle can be obtained using this process.
文摘The semibatch emulsifier-free emulsion copolymerization of methyl methacrylate(MMA and butyl acrylate (BA) in the presence of 2-hydroxyethyl methacrylate (HEMA)initiated by K2S2O8 (PSP) was studied. The latex particles can maintain an appreciablestability during the emulsifier-free emulsion copolymerization of MMA and BA in thepresence of HEMA The average particle diameter increase with an increase of totalsolids content, HEMA content, PSP content, ioniC strength of the system and monomerfeed rate, and decrease with the monomer feed ratio From 3/1(MMA/BA;molar ratio.)to1/3. The stability of this reaction system is improved by adding HEMA as nonioniccomonomer High solids content (50%) latex with monodisperse particle can beobtained using this process.
