紫外辐照丙烯酸十八酯乳液制备疏水织物

A novel hydrophobic non-woven prepared by ultraviolet radiation coating of octadecyl acrylate emulsion

以丙烯酸十八酯(ODA)为单体,以去离子水作为溶剂,O-3,O-9为乳化剂,制备丙烯酸十八酯的水性乳液.以二苯甲酮作为光敏剂,通过紫外光辐照引发,使丙烯酸十八酯的乳液涂覆在PP非织造布的表面并使其固化;考察了乳液固含量、光敏剂浓度、辐照时间对PP非织造布疏水性能的影响;利用衰减全反射红外光谱、SEM、水接触角测量仪、TG热分析对涂覆前后PP非织造布的形貌和结构进行表征和测试.结果表明:固含量15%、光敏剂质量分数1.5%、辐照时间20 min时,PP非织造布对水的接触角能达到130°,并且保持相对稳定.

A new kind of hydrophobic polypropylene（PP） hydrophilic was prepared through coating modification of octadecyl acrylate（ODA） onto the surface of PP non-woven initiated by ultraviolet（UV） with benzophenone as photosensitizer.The factors influenceing the hydrophilic performance were discussed,such as the concentration of photosensitizer,the irradiation time and the concentration of emulsion.Attenuated total rejection-Fourier transform infrared spectroscopy（ATR-FTIR）,scanning electron microscopy（SEM）,static contact angle（CA） measurements and thermo analysis（TG） were used to characterize the chemical and morphological changes of the original and modifcation PP non-woven.The results indicated that the contact angle of the grafted non wovens reached the maximum value of 130° and standed relatively stable when the concentration of ODA was 15%,the photosensitizer concentration was 1%,the irradiation time was 20 min.