脂肪酸甲酯EO/PO共聚醚的性能研究

Study on the performance of fatty acid methyl ester EO/PO polyether

以月桂酸甲酯为原料,通过乙氧基化及丙氧基化反应得到月桂酸甲酯EO/PO共聚醚(FMEP),通过~1HNMR和^(13)CNMR对产物进行了结构表征,并对产物的物化性能及应用性能进行了研究。结果表明:所合成的产品为目标产物;产品的表面活性要优于脂肪酸甲酯乙氧基化物(FMEE),其最低表面张力达到γ_(cmc)=30.85 mN/m,c_(mc)=5.53×10^(-5)mo1·L^(-1);润湿力最好为32 s,比脂肪酸甲酯乙氧基化物的润湿力要差;与市场聚醚消泡剂L61相比,FMEP的消泡及抑泡性能优于161,消泡效率和抑泡效率最高分别达到76.47%和85.0%,产品在实际体系中进行应用,表现出较好的消泡和抑泡性能。

Lauric acid methyl ester EO/PO polyethers （FMEP） were prepared by the ethoxylation and propoxylation reaction with lauric acid methyl ester as raw material. The structure of the product was characterized by 1HNMR and 13CNMR spectrometry methods. The performance of the product and its application were studied. The results showed that FMEP had lower surface tension than that of fatty acid methyl ester ethoxylate, the minimum surface tension is 30.85 mN/m and the cmc is 5.53 ×10^-5mol·L^-1; that the wettability of FMEP is 32 s, which is worse than that of fatty acid methyl ester ethoxylate; that the defoaming abilities of FMEP are better compared with the commercial defoamer L61, the best defoaming efficiency and antifoam properties are 76.47% and 85.0%, respectively. The application study on the actual test showed that FMEP have good defoam and anti-foam performances.