氟代丙烯酸酯共聚乳液FSLDH的成膜性、XPS表征与疏水性能

Film Morphology, XPS Characterization and Hydrophobic Performance Properties of Fluorinated Polyacrylate FSLDH Emulsion

摘要:

在双子型阳离子表面活性剂双十六烷基四甲基溴化乙二铵（21631）和非离子表面活性剂氟代脂肪醇聚氧乙烯醚等作用下，将全氟烷基乙基丙烯酸酯(FA)与甲基丙烯酸十八醇/十二醇酯(SLMA)、甲基丙烯酸二甲氨乙酯(DM)及丙烯酸羟丙酯(HPA) (质量比FA : SLMA : DM : HPA =80 : 16.5 : 3 : 0.5)在水相乳液共聚，制得了一种略带荧光、新型阳离子氟代聚丙烯酸酯FA-co-SLMA-co-DM-co-HPA（FSLDH）乳液。用红外光谱（IR）和核磁共振氢谱（1H NMR）表征了主组分的结构，然后用原子力显微镜（AFM）、光电子能谱仪（XPS）等仪器研究了FSLDH乳液在纤维表面的成膜形态及疏水性能。结果表明，FSLDH乳液可在纤维表面形成一层相对光滑的有机氟聚合物膜。在FSLDH处理后的纤维表面，存在有F、O、N、C元素。用FSLDH乳液处理织物，能明显改善织物的拒水拒油性能。当FSLDH乳液用量达到5g/ 100gH2O时，经其处理后棉纤维织物，水的静态接触角可达到144.9º，拒水性可达到90分，拒油等级达到5级。

Abstract:

In the presence of N,N'-dihexadecyl-N,N,N',N'-tetramethyl ethyl diamine bromide (21631) and fluorinated fatty alcohol polyoxyethylene ether as emulsifiers and ammonium persulfate as a water soluble free-radical initiator, a novel cationic fluorinated long alkyl polyacrylate FA-co-SLMA-co-DM-co-HPA (FSLDH) emulsion was prepared by copolymerization of perfluoroalkylethyl acrylate (FA) with octadecyl/dodecyl methacrylate (SLMA), dimethylaminoethyl methacrylate (DM) and 2-hydroxypropyl acrylate (HPA) in mass ratio of FA : SLMA : DM : HPA = 80 : 16.5 : 3 : 0.5 in aqueous medium. Chemical structure of FSLDH was characterized by infrared spectrum (IR) and 1H nuclear magnetic resonance (1H NMR), then film morphology as well as the hydrophobic performance property of FSLDH emulsion on cotton fiber substrates were investigated by atomic force microscope(AFM) and X-ray photoelectron spectroscopy (XPS) and other instruments. The experiment results indicate that the FSLDH emulsion could form a macroscopic smooth film on the treated cotton fiber surface. Four elements such as F, O, N, C could been examined on the treated cotton fiber surface. In addition, FSLDH could confer the treated cotton fabric with excellent water- and oil-repellency. When the dosage of FSLDH emulsion reached 5g in 100g H2O, the water- and oil-repellency of the treated cotton fabric respectively reached 90 and 5 degree, and the water static contact angle on the treated fabric surface also reached 144.9º.