Preparation and application of short chain fluorinated polyacrylate functional finishing agent
To prepare a three-proof finishing agent with good water-resistant properties,a short chain fluorinated polyacrylate miniemulsion was prepared by miniemulsion polymerization with tridecooctyl acrylate(C6F)and octaglycidyl acrylate(SA)as main monomers and glycidyl methacrylate(GMA)as crosslinked monomer,and was applied as a finishing agent on cotton fabrics.The emulsion was characterized by infrared spectrum analysis,particle size analysis and thermogravimetric analysis,and the surface structure of cotton fabrics was characterized by scanning electron microscopy(SEM)and X-ray photoelectron spectroscopy(XPS).The influence of the amount of C6F and SA on the surface energy of this copolymer film was investigated.The results showed that the surface energy of the copolymer film was 9.16 mN/m when the mass fraction of C6F was 50%and the mass fraction of SA was 25%.The finishing cotton fabric had a water contact angle of 150.8°,an olive oil contact angle of 141.2°,a water repellency class 4,an oil repellency class 4 and a stain resistance class 5.After 20 washes,the water contact angle of the finished cotton fabric was still 135.7°,and the olive oil contact angle was 124.8°,demonstrating good water washing resistance.The results can provide data reference for the preparation of short chain C6 fluorinated acrylate copolymer.
short chain fluorinated acrylateminiemulsion polymerizationcotton fabricthree-proof performancewater washing resistance