氟代聚丙烯酸酯乳液的制备及应用

Preparation and application of fluorinated acrylate emulsion

以(NH4)2S2O8为引发剂,将丙烯酸十二氟庚酯(RfAA)、丙烯酸丁酯(BA)和丙烯酸羟丙酯(HPAA)进行乳液聚合,制备了阴离子氟代聚丙烯酸酯(PAFBA)乳液。用FT-IR对PAFBA膜的结构进行表征,通过扫描电镜(SEM)对PAFBA整理后棉纤维表面的微观形貌进行观察,并对其应用性能进行研究。结果表明:PAFBA可在纤维表面成膜,该膜能使整理后棉织物与水的接触角达到128.0°,静态吸水时间超过6 h;向PAFBA整理液中加入适量醋酸锌,可明显提高整理后棉织物的疏水性能;恒定醋酸锌用量时,PAFBA乳液用量对整理后棉织物的疏水效果亦有影响,其最佳用量为2 g。

Fluorinated acrylate polymer （PAFBA） emulsion was synthesized from dodecafluoro-heptyl methacrylate （ R1AA ）, butyl acrylate （ BA ） and 2-hydroxypropyl acrylate （ HPAA ） with （ NH4 ）2S2O8 as initiator through emulsion polymerization. The structure of PAFBA film was characterized by FT-IR.. The surface morphology of cotton fiber treated by PAFBA was observed by using scanning electron microscopy （SEM）, and its application performance was also investigated. The results show that the PAFBA film on cotton fibers can improve the water contact angle of cotton fibers to 128.0° and prolong static hygroscopic time to more than 6 hours. Adding suitable amount of Zn（CH3 COO）2 to the finishing agent, water-repellent properties of the treated cotton fabric can be improved significantly. When the Zn（CH3COO）2 dosage remains unchanged, the dosage of PAFBA emulsion also has impact on the water-repellent properties of the treated fabric, the best dosage of PAFBA emulsion is 2 g.