以油酸为原料的新型生物基支链十七烷基苯磺酸钠的合成及性质（英文）

发布时间：2018-03-08 15:10

本文选题：生物基表面活性剂　切入点：支链十七烷基苯磺酸钠　出处：《物理化学学报》2016年11期 　论文类型：期刊论文

【摘要】：生物基表面活性剂由于其可再生资源和优异的表面/界面性质吸引了越来越多的关注。本文以可再生的油酸为原料,通过四步反应,制备了新型生物基支链表面活性剂,并评价了其表/界面性质、润湿性和生物降解性能。该新型生物基支链表面活性剂为4-(1-十七烷基)苯磺酸钠(9ΦC17S),依次经过烷基化反应、脱羧反应、磺化反应和中和反应而制得。其化学结构已通过电喷雾质谱、红外光谱和核磁共振波谱得以确认。4-(1-十七烷基)苯磺酸钠展现出良好的表/界面张力,临界胶束浓度(CMC)为317.5 mg?L~(-1),CMC处的表面张力为32.54 m N?m~(-1),当水溶液中碳酸钠浓度为8.48×104mg?L~(-1)、4-(1-十七烷基)苯磺酸钠浓度为8.36×104mg?L~(-1)时,油水的界面张力约为10-2m N?m~(-1)。此外,4-(1-十七烷基)苯磺酸钠在生物降解性和润湿性方面也显示出了良好的性能,最终生物降解评分为2.99,0.500 g?L~(-1)9ΦC17S溶液的气液固接触角为63.08°。该新型生物基表面活性剂丰富了以可再生资源为原料的生物基表面活性剂的结构多样性。
[Abstract]:Bio-based surfactants have attracted more and more attention due to their renewable resources and excellent surface / interface properties. In this paper, a novel bio-based branched surfactant was prepared by four-step reaction using renewable oleic acid as raw material. The surface / interface properties, wettability and biodegradability were evaluated. The new biological branched chain surfactant was 4-1-17 alkyl) sodium benzenesulfonate 9 桅 C17SN, followed by alkylation reaction and decarboxylation reaction. The chemical structure has been confirmed by electrospray ionization mass spectrometry, infrared spectroscopy and nuclear magnetic resonance spectroscopy. Sodium benzenesulfonate shows good surface / interfacial tension. The critical micelle concentration is 317.5mg? The surface tension of CMC is 32.54 m N? When the concentration of sodium carbonate in aqueous solution was 8.48 脳 10 ~ 4 mg? The concentration of sodium benzenesulfonate is 8.36 脳 10 ~ 4 mg? The interfacial tension of oil and water is about 10-2m N? In addition, sodium benzenesulfonate showed good biodegradability and wettability, with a final biodegradation score of 2.99 ~ 0.500g? The gas-liquid-solid contact angle of the solution is 63.08 掳. The new biosurfactant enriches the structural diversity of bio-based surfactants based on renewable resources.
【作者单位】：华东理工大学应用化学研究所生物反应器工程国家重点实验室;上海生物制造技术合作创新中心;
【基金】：supported by the National Natural Science Foundation of China(51574125,21203063) National High Technology Research and Development Program of China(2013AA064403) Foundation of the Ministry of Education of China for Outstanding Young Teachers in University(WJ1514313)~~
【分类号】：O647.2

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