摘要
以4-羟基偶氮苯、1,2-二溴乙烷、PEG-600为原料,合成直链型偶氮苯聚氧乙烯醚非离子表面活性剂(PEP-600)。通过红外光谱和核磁共振氢谱表征了其结构,并测试了其表面活性。结果表明,PEP-600临界胶束浓度(CMC)为4.99×10~(–3) mol/L,在CMC处表面张力为48.09 mN/m,饱和吸附量为2.48×10~(–3) mmol/m~2,亲水亲油平衡值(HLB)为14.20。将PEP-600与0.1 g/L的十二烷基硫酸钠复配最大发泡比为12,泡沫半衰期为220s左右,直链型分子结构的PEP-600在泡沫液膜表面排列紧密,具有优异的起泡性能,可用作泡沫染整稳泡剂。
A linear-type azobenzene polyoxyethylene ether nonionic surfactant(PEP-600), as a foam stabilizer was synthesized using p-hydroxyazobenzene, 1, 2-dibromoethane and polyethylene glycol(PEG-600) as raw materials. Its structure was characterized by FTIR and 1 HNMR. Its surface activity and foam properties were analyzed. The results showed that the critical micelle concentration(CMC) of PEP-600 was 4.99×10~(–3) mol/L and the surface tension at CMC was 48.09 mN/m. The surface excess and HLB value of PEP-600 were 2.48×10~(–3) mmol/m~2 and 14.20, respectively. Meanwhile, the maximum foaming ratio of PEP-600 with sodium dodecyl sulfate(0.1 g/L) was about 12 and the foam half-life was220 s, meaning that PEP-600 had excellent foaming property, which was attributed to the tight arrangement at the surface of foam film. So, PEP-600 had the potential to apply in foam dyeing as a foam stabilizer.
引文
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