摘要
采用2-丙烯酰胺-2-甲基丙磺酸(AMPS)作为腈纶染色带磺酸基团的乙烯基单体,通过自由基聚合法合成一种共聚改性聚丙烯腈(P(AN-co-AMPS)),并通过静电纺丝制成纳米纤维。将静电纺共聚改性聚丙烯腈纳米纤维与普通聚丙烯腈(PAN)纳米纤维和腈纶(acrylic)细旦纤维进行对比,研究纤维染色性能差异。通过傅里叶变换红外光谱(FTIR)、核磁共振氢谱(1 H-NMR)、X射线衍射(XRD)、差示扫描量热(DSC)和扫描电镜(SEM)等手段对纤维结构进行表征,并研究染色浓度、温度和缓染剂类型等因素对纤维染色性能的影响。结果表明:相比普通聚丙烯腈,P(AN-coAMPS)结晶度和玻璃化转变温度较低;在较低温度时P(AN-co-AMPS)纤维上染率高达80.2%,且染色后纤维表观形貌无明显变化,表观色深提高;不同缓染剂类型对纳米纤维缓染效果影响不同,采用β-环糊精则初染率(5min)降低了42.6%,上染率(2h)只降低3.1%;同等染色浓度下,纳米级纤维表观色深度较浅,但染色后耐皂洗色牢度都不低于4级。
The 2-acrylamide-2-methyl propane sulfonic acid(AMPS)was used as acrylic dyed vinyl monomer to synthesize a modified polyacrylonitrile copolymerization(P(AN-co-AMPS))by free radical polymerization.The polymer was prepared to nanofiber by electrospinning.Its dyeing properties have been compared with regular polyacrylonitrile(PAN)nanofibers and acrylic fibers.The resultant polymer and nanofiber were analyzed using Fourier transform infrared spectroscopy(FTIR),1 H-NMR,scanning electron microscope(SEM),X-ray diffraction(XRD)and differential scanning calorimetry(DSC),and the parametric influences of dyeing concentration,temperature and retarding agent type on nanofiber dyeing properties were discussed.Research results show that compared to regular PAN nanofibers,P(AN-co-AMPS)nanofibers have a lower crystallinity and glass transition temperature,contributed to a higher dye-uptake(80.2%)at low temperature.The fiber morphology remains structurally stable afterdyeing,and the value of K/S increases.Different retarding agent exhibits a different effect on nanofiber.β-cyclodextrin has a better retarding effect,of which the initial dyeing rate(5 min)decreased by 42.6% while dye-uptake(2 h)only 3.2%,and the wash fastness of fibers is no less than 4 grade.
作者
周金香
张弘楠
覃小红
侯兵兵
ZHOU Jinxiang;ZHANG Hongnan;QIN Xiaohong;HOU Bingbing(College of Textiles, Donghua University, Shanghai 201620, China)
出处
《东华大学学报（自然科学版）》
CAS
CSCD
北大核心
2018年第6期921-928,共8页
Journal of Donghua University(Natural Science)
基金
长江学者(青年学者)计划资助项目(51373033)
国家自然科学基金资助项目(11172064)
教育部重点支持资助项目(113027A)
上海市科委"扬帆计划"资助项目(14Y1405100)
中央高校基本科研业务费专项资金资助项目
东华大学励志计划资助项目
关键词
改性聚丙烯腈
纳米纤维
静电纺丝
阳离子染料
染色性能
modified polyacrylonitrile
nanofiber
electrospinning
cationic dye
dyeing properties
