β-环糊精对曲拉通X-114紫外光谱抗干扰性能的影响  

Effect ofβ-cyclodextrin on anti-interference performance of Triton X-114 ultraviolet spectrum

作　　者：许慧华 石东坡[1] 吴浩[1] 尹先清[1] 郑延成[1] 陈武[1] 李赓 XU Huihua;SHI Dongpo;WU Hao;YIN Xianqing;ZHENG Yancheng;CHEN Wu;LI Geng(State Key Laboratory of Petroleum Pollution Control,Yangtze University,Jingzhou 434023,Hubei,China)

机构地区：[1]长江大学石油石化污染控制与处理国家重点实验室,湖北荆州434023

出　　处：《化工进展》2022年第4期2075-2081,共7页Chemical Industry and Engineering Progress

基　　金：国家自然科学基金(41202111);湖北省自然科学基金(2015CFB189);长江大学长江人才计划(2016cqr03)

摘　　要：辛基苯基聚氧乙烯醚(曲拉通X-114)和脂肪醇聚氧乙烯醚(AEO-9)之间的相互作用能对水溶液中曲拉通X-114的紫外光谱产生明显影响。实验结果表明,在200~350nm范围内,曲拉通X-114的最大吸收波长为223nm,AEO-9的紫外吸光度接近于0;在水溶液中,AEO-9能减弱曲拉通X-114的紫外吸光度,降幅达3.4%;AEO-9还能显著降低曲拉通X-114的表观临界胶束浓度(cmc),当AEO-9的浓度从0增加到0.050mmol/L和0.100mmol/L时,曲拉通X-114的表观cmc从0.219mmol/L分别降至0.207mmol/L和0.202mmol/L。实验结果进一步表明,β-环糊精(β-CD)能有效降低AEO-9对曲拉通X-114的紫外吸光度及表观cmc的影响,在曲拉通X-114和AEO-9复配水溶液中,按物质的量比1∶1加入β-CD,复配水溶液中曲拉通X-114的回收率从95.8%~103.3%变化至99.0%~100.1%,表明了β-CD能明显降低AEO-9对曲拉通X-114的干扰作用。红外光谱表征结果(FTIR)、核磁共振氢谱表征(1H NMR)及热重差热分析表征结果(TG-DSC)表明,曲拉通X-114进入β-CD分子空腔并形成包结物,是阻断曲拉通X-114分子形成混合胶束以及消除AEO对曲拉通X-114的干扰的主要原因。The interaction between octyl phenyl polyoxyethylene ether(Triton X-114)and fatty alcohol polyoxyethylene ether(AEO-9)could significantly affect the ultraviolet spectrum of Triton X-114 in aqueous solution.The experimental results indicated that the maximum absorption wavelength of Triton X-114 was 223nm in the range of 200-350nm,and the ultraviolet absorbance of AEO-9 was close to 0.In aqueous solution,AEO-9 can decrease the UV absorbance of Triton X-114 by 3.4%.AEO-9 also significantly decreased the apparent critical micelle concentration(cmc)of Triton X-114 from 0.219mmol/L to 0.207mmol/L and 0.202mmol/L,respectively when the concentration of AEO-9 increased from 0 to 0.050mmol/L and 0.100mmol/L.Experimental results further showed thatβ-cyclodextrin(β-CD)can effectively reduce the AEO-9 on the ultraviolet absorbance of the Triton X-114 and the influence of apparent cmc.When the Triton X-114 and AEO-9 distribution in aqueous solution with the amount of substance ratio 1∶1 to join theβ-CD,the recovery of Triton X-114 in the mixed aqueous solution changed from 95.8%-103.3%to 99.0%-100.1%.It was suggested that theβ-CD can significantly reduce the interference of AEO-9 on Triton X-114.The results of Fourier transform infrared spectroscopy analysis(FTIR),nuclearmagnetic resonance hydrogen spectrum(1H NMR)analysis and thermogravimetric differential thermal analysis(TG-DSC)showed that Triton X-114 enteredβ-CD molecular cavity and formed inclusion,which was the main reason for blocking the formation of mixed micelles of Triton X-114 molecule and eliminating the interference of AEO-9 to Triton X-114.

关 键 词：辛基苯基聚氧乙烯醚 Β-环糊精 胶束 紫外光谱 

分 类 号：O625.151[理学—有机化学]