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·36·                              精细化工   FINE CHEMICALS                                  第 36 卷

            阻止乳液的聚并，而且分散于连续相中，通过氢键                             胶为原料，在酸性条件下（pH = 4.0）通过二次去溶
            或范德华力等与两相界面上的颗粒相互作用，由此                             剂法制得的。与文献报道的明胶纳米颗粒（GNPs）
            将不同液滴连接在一起，形成三维网状结构，使液                             相比，本文制备的 AGNPs 主要有 4 个方面的特点：
            滴受限于凝胶状乳液中，进而增加乳液的稳定性                      [13] 。  粒径较小（150~300 nm），具有良好的单分散性（PDI =
            此外通过稳定性实验发现，AGNPs 质量浓度为 3、5、                       0.068）；表面净电荷量较高（ζ≈35 mV），具备长期
            15、25、50 g/L 制备的 Pickering 高内相乳液在 4 ℃              的储存稳定性；呈光滑球形，具有质地均匀的刚性
            下储存 9 个月均未出现明显分层现象，表现出良好                           结构；三相接触角（θ ow  = 67° ± 5°）增大，具备较
            的稳定性。由此表明， AGNPs 是一种优异的                            高的表面疏水性。因此，AGNPs 在制备高稳定性
            Pickering 乳液稳定剂，可用于高稳定性乳液的制备。                      Pickering 乳液方面具有潜在应用优势。

                                                               参考文献：
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            此时，加入交联剂戊二醛使纳米颗粒中蛋白质链发
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                        图 10  AGNPs 的反应机理                          phase emulsions  as nutraceutical containers[J]. ACS Applied
                    Fig. 10    Reaction mechanism of AGNPs         Materials & Interfaces, 2014, 6(16): 13977-13984.

                                                               [14]  Pawlik A, Kurukji D, Norton I,  et al. Food-grade Pickering
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                 氨基化明胶纳米颗粒（AGNPs）是以氨基化明                                                        （下转第 43 页）
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