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·2310·                            精细化工   FINE CHEMICALS                                 第 38 卷


            污布的去污力与 LAS、AOS 等传统表面活性剂的去                         3   结论
            污力相当,且均优于皂类的去污力。3 种椰子油酰
            基氨基酸钠在 250 mg/kg 硬水中对碳黑、蛋白污布                           依据绿色化学基本原则,利用天然可再生油脂
            的去污力于皂类的去污力相当;与 LAS、AOS 等传                         椰子油与芳香族氨基酸钠反应,制备了 3 种椰子油
            统表面活性剂相比,3 种椰子油酰基氨基酸钠对 3                           酰 基氨基酸 钠表面活 性剂,并 利用 FTIR 和
            种污布的去污力相对于其在蒸馏水中的去污力均有                             HPLC-MS 进行结构表征与组分分析,进一步丰富了
            所下降,尤其是对皮脂污布的去污力,这可能与它                             油脂基氨基酸的种类。通过对 3 种椰子油酰基氨基
            们的耐硬水性较差有关。                                        酸盐(Co-His-Na、Co-Tyr-Na 与 Co-Phe-Na)的各

                                                               项性质进行评价发现,合成的 3 种表面活性剂均具
                                                               有良好的界面活性和泡沫性能、较强的乳化能力,
                                                               去污力于多种传统表面活性剂相当,耐硬水性等同
                                                               或优于皂类。此外,3 种表面活性剂的性能与芳香环
                                                               结构密切相关,Co-His-Na 氨基酸的取代基尺寸较小。
                                                               因此,其界面排布更加紧密,表现出更高的界面活
                                                               性、泡沫性能及乳化性能;Co-Tyr-Na 由于酪氨酸亲
                                                               水的酚羟基存在,其在抗硬水方面表现出较大的优势。

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