含氟嵌段共聚物蜂窝状多孔膜制备与表征

发布时间：2018-05-07 07:12

本文选题：原子转移自由基聚合 + 静态呼吸图法　；参考：《高分子材料科学与工程》2017年08期

【摘要】：采用原子转移自由基聚合(ATRP)方法,合成聚苯乙烯(PS)大分子引发剂,再引发甲基丙烯酸十二氟庚酯制备嵌段共聚物(PS-b-PDFHMA)。将嵌段共聚物与纳米二氧化钛(TiO_2)复合,利用静态呼吸图法制备抑菌性多孔膜。通过傅里叶变换红外光谱、核磁共振氢谱、凝胶渗透色谱等对嵌段共聚物结构、组成及相对分子质量进行分析和表征;利用扫描电子显微镜对多孔膜表面形貌和膜层结构进行观察;利用接触角测试仪和微生物粘附实验研究多孔膜表面润湿性及对微生物粘附的影响。结果表明,以水滴为模板的多孔膜相较于不含孔薄膜疏水性有一定改善,但细菌粘附量提高,与TiO_2复合后,多孔膜表面粗糙度上升,水接触角可达136°,其表面细菌粘附量明显下降。
[Abstract]:The macromolecular initiator of polystyrene (PS) was synthesized by atom transfer radical polymerization (ATRP), and then the block copolymer (PS-b-PDFHMAA) was prepared by initiating dodecyl heptyl methacrylate. The block copolymers were combined with nano-TiO _ 2 / tio _ 2) and the antibacterial porous membranes were prepared by static respiration method. The structure, composition and relative molecular weight of block copolymers were analyzed and characterized by Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR) and gel permeation chromatography (GPC). The surface morphology and film structure of porous membrane were observed by scanning electron microscope (SEM), and the wettability of porous membrane surface and its effect on microbial adhesion were studied by contact angle tester and microbial adhesion experiment. The results showed that the hydrophobicity of porous membrane with water drop as template was improved compared with that without pore, but the amount of bacterial adhesion was increased, and the surface roughness of porous membrane increased after composite with TiO_2. The contact angle of water reached 136 掳, and the adhesion of bacteria on the surface decreased obviously.
【作者单位】：常州大学材料科学与工程学院;南京林业大学材料科学与工程学院;江苏晨光涂料有限公司;
【基金】：国家自然科学基金青年基金资助项目(51203015) 中国博士后科学基金资助项目(2014M551602) 江苏省工业支撑项目(BE2014821) 江苏省产学研前瞻项目(BY2014037-05) 江苏省博士后基金(1401083B) 常州市科技支撑(工业)项目(CE2015002)
【分类号】：TB383.2

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