Page 156 - 《精细化工》2021年第8期
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第 38 卷第 8 期                             精   细   化   工                                  Vol.38, No.8
             202 1 年 8 月                             FINE CHEMICALS                                 Aug.  2021


              医药与日化原料
                    仿生黏附性聚多巴胺丁香酚抑菌微胶囊的制备



                                                                           *
                                             陈茹茹,施冬健,储   鸿
                      (江南大学  化学与材料工程学院,合成与生物胶体教育部重点实验室,江苏  无锡  214122)


                 摘要:以丁香酚(EO)为芯材,盐酸多巴胺(DA)为壳材,通过乳液模板-界面聚合法成功制备出尺寸可控的聚
                 多巴胺丁香酚(PDA@EO)微胶囊。通过 FTIR、TG、UV-Vis、SEM 和 TEM 对微胶囊的化学结构、形貌、粒
                 径及性能进行表征和分析。结果表明,所制备的微胶囊呈规整球形,粒径在 55~94 nm 之间,丁香酚最大包封率
                 为 22.52%,最大包封量为 0.6288 g/g,24 h 时累积释放率达到 68.39%(pH=8.0)。对比实验证明,PDA@EO 微
                 胶囊在不同材料表面均具有优异的黏附性能;作用于口腔感染部位常见细菌金黄色葡萄球菌和大肠杆菌 24 h,
                 PDA@EO 微胶囊较游离丁香酚的抑菌活性分别提高 36.84%和 35.52%;当微胶囊质量浓度达到 2.0 g/L 时,
                 PDA@EO 微胶囊对两种细菌的抑菌率均达到 99%以上。
                 关键词:聚多巴胺;丁香酚;微乳液;微胶囊;黏附性;抑菌活性;医药原料
                 中图分类号:TQ460.4      文献标识码:A      文章编号:1003-5214 (2021) 08-1650-10


                            Preparation of biomimetic and adhesive polydopamine

                                       eugenol antibacterial microcapsules

                                                                              *
                                          CHEN Ruru, SHI Dongjian, CHU Hong
                 (Key Laboratory of Synthetic  and Biological  Colloids, Ministry of Education, School  of Chemical  and Material
                 Engineering, Jiangnan University, Wuxi 214122, Jiangsu, China)


                 Abstract: Polydopamine eugenol microcapsules (PDA@EO) with controllable size were prepared by emulsion
                 template-interfacial polymerization using eugenol (EO) as core material and dopamine (DA) as shell material.
                 The chemical structure, morphology, particle size and properties of the microcapsules were characterized by
                 FTIR, TG, UV-Vis, SEM and TEM. The results showed that the microcapsules had regular spherical shape
                 with particle size ranging from 55 to 94 nm. The encapsulation efficiency and encapsulation capacity of
                 eugenol were 22.52% and 0.6288 g/g, respectively. The cumulative release rate reached 68.39% (pH=8.0)
                 after 24 h. The comparative experiments indicated that PDA@EO microcapsules had excellent adhesive
                 property on different surfaces. After PDA@EO microcapsules and free eugenol treated with S. aureus and E.
                 coli in the site of oral infection for 24 h, the antibacterial activities of PDA@EO microcapsules was increased
                 by 36.84% and 35.52% compared  with that of  free  eugenol,  respectively. The antibacterial activities of
                 PDA@EO microcapsules with a mass concentration of 2.0 g/L, against both bacteria were more than 99%.
                 Key words: polydopamine; eugenol; microemulsion; microcapsules; adhesiveness; antibacterial activity;
                 drug materials


                                                                 [4]
                 细菌感染严重威胁公众健康,到 2050 年,预计                      群 ;另外,唾液的持续冲洗作用很难使药物在口
                                        [1]
                                                                             [5]
            每年有 1000 万人死于细菌感染 。口腔疾病大多数                         腔保持有效浓度 ,因此,提高抑菌剂在生物膜内
                                      [2]
            是由细菌生物膜感染引起的 。抗生素是治疗细菌                             的生物利用度和保持力,迫切需要开发新的输送体
                           [3]
            感染的常用药物 ,目前用于治疗细菌感染的抗生                             系。聚合物药物载体可以保护治疗分子的稳定性和
            素和化学抑菌剂会干扰口腔和消化道的正常细菌菌                             完整性,将药物运送到所需的靶点且进行药物的释


                 收稿日期:2021-01-06;  定用日期:2021-02-20; DOI: 10.13550/j.jxhg.20210016
                 作者简介:陈茹茹(1995—),女,硕士生,E-mail:1242161275@qq.com。联系人:储   鸿(1971—),女,副教授,E-mail:chuhong@
                 jiangnan.edu.cn。
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