摘要
基于紫外光照射引发甲基丙烯酰丙基三甲基氯化铵(MAPTAC)接枝改性赋予丙纶非织造布染料吸附功能。用红外光谱、热失重和扫描电镜等方法表征改性织物的微观结构、性能及吸附分离作用。结果表明,MAPTAC成功接入丙纶织物表面,改性织物对阴离子染料表现出优异的吸附分离性能。对于接枝率为89.6%的织物,当吸附时间为120min,在35℃、45℃和55℃时染料(20mg/L,50mL)去除率均大于95%。吸附染料的改性织物可用阳离子活性剂/乙醇解吸。重复吸附10次,每次吸附率仍达99%以上,改性后的织物可以重复使用。
Using gamma-methacrylamidopropyl trimethyl ammonium chloride （MAPTAC） as initiator, the ultraviolet-irradiated grafting polymerization and dye adsorption of polypropylene nonwovens were carried out. The microstructure and properties of the resulted fabrics were characterized through Fourier transform infrared, thermogravimetry, and scanning electron microscopy. The results show that the quaternary ammonium monomer is successfully grafted onto the surface of polypropylene fabrics. The dye removals reach 95 % for the fabric with the grafting yield of 89.6 % at 35 ℃, 45℃and 50 ℃respectively. The desorption process of adsorbed fabric was realized by the sequential immersion of cationic surfactant-ethanol. The grafted fabrics can be applied for the dye adsorption repeatedly over l0 times with the dye removal degree over 99 % each.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2013年第7期52-55,共4页
Polymer Materials Science & Engineering
关键词
聚丙烯无纺布
甲基丙烯酰丙基三甲基氯化铵
接枝
吸附
再生
polypropylene nonwoven fabric
methacrylamidopropyl trimethyl ammonium chloride
grafting
adsorptive separation
regeneration
