The monomer methacrylamido propyl trimethy ammonium chloride( MAPTAC) was copolymerized onto the fiber surface of polypropylene( PP) nonwoven fabric under ultroviole radiation. The weak acid red GN dye adsorption and ...The monomer methacrylamido propyl trimethy ammonium chloride( MAPTAC) was copolymerized onto the fiber surface of polypropylene( PP) nonwoven fabric under ultroviole radiation. The weak acid red GN dye adsorption and adsorptive filtration performance of the resulted PP fabrics were investigated.The results showed that the grafting copolymerization preferred to happen in the inner layer of the fabrics. The water flux of the grafted fabrics decreases with the increase of grafting yield. The collapse of the grafted polymer chains causes the flux increase in acidic condition,or vice versa at alkaline version. The coiling of the polyelectrolyte chains upon the dye adsorption seems to violate the routine assumption of the rigid substrate, and this gets the adsorption energy constant negative. The static adsorption process follows the Lagergren's pseudo-second order kinetic equation. The removals of circa( ca.) 100% of the total permeation volume3 500 mL simulated dye wastewater was reached during permeation.The dye adsorbed fabrics were regenerated by the mixed media of the cationic surfactant / ethanol /water. The grafted fabric assumes stable fabric integrity and stability during permeation,and presents excellent dye adsorption capacity,easy desorption, and repeatable utilization.展开更多
以(NH4)2S2O8作引发剂,阳、非离子表面活性剂作乳化剂,将甲基丙烯酸十二氟庚酯(RfAA)、丙烯酸丁酯(BA)、甲基丙烯酸二甲氨乙酯(DM)以及丙烯酸羟丙酯(HPAA)进行乳液聚合,制得了一种稳定的阳离子氟代聚丙烯酸酯乳液(PCFBA)。用红外光谱(IR...以(NH4)2S2O8作引发剂,阳、非离子表面活性剂作乳化剂,将甲基丙烯酸十二氟庚酯(RfAA)、丙烯酸丁酯(BA)、甲基丙烯酸二甲氨乙酯(DM)以及丙烯酸羟丙酯(HPAA)进行乳液聚合,制得了一种稳定的阳离子氟代聚丙烯酸酯乳液(PCFBA)。用红外光谱(IR)、核磁共振氢谱(1HNMR)对PCFBA主组分的结构进行了表征。用扫描电镜SEM、接触角测量仪、电脑测控柔软度仪等研究了PCFBA在棉纤维织物表面的成膜性及应用性能。结果表明,PCFBA可在纤维表面形成相对均匀的疏水膜,该膜附着在纤维表面,能使整理后棉织物与水的接触角达到134.5°、静态吸水时间超过6 h;当PCFBA用量从0.3 g/100 mL H2O增大到1 g/100 mL H2O时,水在其整理的棉纤维织物表面的接触角从128.2°增大到134.5°,而棉织物的白度则由85.44°略降至84.40°。展开更多
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)〔m(FA)∶...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)〔m(FA)∶m(SLMA)∶m(DM)∶m(HPA)=80∶16.5∶3∶0.5〕在水相乳液中共聚,制得了一种略带荧光的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(1HNMR)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F、O、N、C元素。用FSLDH乳液处理棉纤维织物,能明显改善织物的拒水拒油性能,当FSLDH乳液用量达到5 g/100 g H2O时,水在织物表面的静态接触角可达到144.9°,拒水性可达到90分,拒油等级达到5级。展开更多
基金the Priority Academic Development Program for Textile Science and Textile Engineering of Jiangsu Higher Education Institutions,Chinathe Environmental Protection Department of Jiangsu Province,China(No.2012009)Suzhou Municipal Government,China(No.SYG201202)
文摘The monomer methacrylamido propyl trimethy ammonium chloride( MAPTAC) was copolymerized onto the fiber surface of polypropylene( PP) nonwoven fabric under ultroviole radiation. The weak acid red GN dye adsorption and adsorptive filtration performance of the resulted PP fabrics were investigated.The results showed that the grafting copolymerization preferred to happen in the inner layer of the fabrics. The water flux of the grafted fabrics decreases with the increase of grafting yield. The collapse of the grafted polymer chains causes the flux increase in acidic condition,or vice versa at alkaline version. The coiling of the polyelectrolyte chains upon the dye adsorption seems to violate the routine assumption of the rigid substrate, and this gets the adsorption energy constant negative. The static adsorption process follows the Lagergren's pseudo-second order kinetic equation. The removals of circa( ca.) 100% of the total permeation volume3 500 mL simulated dye wastewater was reached during permeation.The dye adsorbed fabrics were regenerated by the mixed media of the cationic surfactant / ethanol /water. The grafted fabric assumes stable fabric integrity and stability during permeation,and presents excellent dye adsorption capacity,easy desorption, and repeatable utilization.
文摘以(NH4)2S2O8作引发剂,阳、非离子表面活性剂作乳化剂,将甲基丙烯酸十二氟庚酯(RfAA)、丙烯酸丁酯(BA)、甲基丙烯酸二甲氨乙酯(DM)以及丙烯酸羟丙酯(HPAA)进行乳液聚合,制得了一种稳定的阳离子氟代聚丙烯酸酯乳液(PCFBA)。用红外光谱(IR)、核磁共振氢谱(1HNMR)对PCFBA主组分的结构进行了表征。用扫描电镜SEM、接触角测量仪、电脑测控柔软度仪等研究了PCFBA在棉纤维织物表面的成膜性及应用性能。结果表明,PCFBA可在纤维表面形成相对均匀的疏水膜,该膜附着在纤维表面,能使整理后棉织物与水的接触角达到134.5°、静态吸水时间超过6 h;当PCFBA用量从0.3 g/100 mL H2O增大到1 g/100 mL H2O时,水在其整理的棉纤维织物表面的接触角从128.2°增大到134.5°,而棉织物的白度则由85.44°略降至84.40°。
文摘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)〔m(FA)∶m(SLMA)∶m(DM)∶m(HPA)=80∶16.5∶3∶0.5〕在水相乳液中共聚,制得了一种略带荧光的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(1HNMR)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F、O、N、C元素。用FSLDH乳液处理棉纤维织物,能明显改善织物的拒水拒油性能,当FSLDH乳液用量达到5 g/100 g H2O时,水在织物表面的静态接触角可达到144.9°,拒水性可达到90分,拒油等级达到5级。
