Synthesis of siloxane fluorinated polyacrylate emulsion and its application on polyester fabric

A novel siloxane fluorinated polyacrylate emulsion(FLHDV) was prepared by copolymer-ization of dodecafluoroheptyl methacrylate(RfAA),lauryl methacrylate(LMA),2-hydroxypropyl acrylate(HPA),dimethylaminoethyl methacrylate(DM) and vinyltrioxethylsiloxane(VTES) with the(NH4)2S2O8 as a water soluble initiator and cationic/nonionic surfactants as mixed emulsifier.Chemical structure of FLHDV was characterized by infrared spectrum(IR) and 1H nuclear magnetic resonance(1H-NMR).The particle sizes and the latex distribution of the emulsion were investigated by TEM,ζ voltage analysis and other instruments.The performance of polyester fabric treated by FLHDV emulsion was also studied.The experimental results show that the FLHDV emulsion carried positive charges with a mean ζ voltage of + 47.64 mV and with an average particle size of 116.2 nm.The smooth film of FLHDV can be formed on polyester fabric surfaces and conferred the treated polyester fabric with an excellent water-and oil-repellency.As a result,the treated polyester fabric exhibited good water-and oil-repellent properties with water-repellency degree of 100,oil-repellency rating of 5,and water static contact angle of 142.5°.