表面活性剂对腈纶碱法水解的影响  

Effect of surfactants on alkali hydrolysis of PAN fiber

作　　者：李慧[1] 李青松[1] 朱林[1] 周超[1] 朱新生[1] 

机构地区：[1]苏州大学纺织与服装工程学院,江苏苏州215021

出　　处：《合成纤维工业》2013年第4期38-41,共4页China Synthetic Fiber Industry

摘　　要：研究了聚丙烯腈纤维碱法水解过程中添加表面活性剂对水解反应的影响,采用红外光谱法、元素分析法、黏度法、酸碱滴定法和吸湿法等对聚丙烯腈浆粕、短纤维的水解产物进行表征。结果表明:在腈纶碱法水解中,加入阳离子表面活性剂1427明显加快了聚丙烯腈的水解作用;最佳的碱性水解条件为腈纶短纤维1 g,NaOH 0.75 g,阳离子表面活性剂1427 1.5 mL,温度90℃,时间2 h,腈基转化为羧基的转化率(以摩尔计)为38.7%。The effect of surfactants addition on the alkali hydrolysis of polyacrylonitrile （PAN） fiber was studied. The hydroly- sates of PAN pulp and staple fiber were characterized by infrared spectrometry, elemental analysis, viscosimetry, acid-base titra- tion and moisture absorption method. The results showed that the cationic surfactant 1427 profoundly accelerated the hydrolysis of PAN ; the conversion rate of nitrile group to carboxylic group was 38.7% by mole under the alkali hydrolysis conditions optimized as followed： PAN staple fiber 1 g, 0.75 g NaOH, 1.5 mL cationic surfactant 1427, temperature 90 ℃ and time 2 h.

关 键 词：聚丙烯腈短纤维 水解 表面活性剂 吸湿性 电导率法 浆粕 碱法 

分 类 号：TQ342.31[化学工程—化纤工业]