本文通过化学嫁接法引入氟烷基,对溶胶-凝胶法制得的单分散二氧化硅进行改性,得到了油水双疏的纳米二氧化硅小球,并考察了水和氟烷基硅烷对颗粒形貌及双疏性的影响.采用傅立叶红外光谱仪(FTIR)、扫描电子显微镜(SEM)、接触角测量仪(CA)及热重分析(TG)对产物进行了表征.结果表明,一定范围内延迟氟烷基硅烷的加入时间和增加水含量,可得到分散性、均匀性和双疏性都较好的表面改性SiO2球.增加氟烷基硅烷量,改性SiO2球的双疏性增强,但是分散性和均匀性变差,并出现了不规则形貌颗粒.
参考文献
| [1] | Tao Miao;Lei Wang .Immobilization of copper in organic-inorganic hybrid materials: a highly efficient and reusable catalyst for the Ullmann diaryl etherification[J].Tetrahedron letters: The International Journal for the Rapid Publication of Preliminary Communications in Organic Chemistry,2007(26):95-99. |
| [2] | Paci A;Mercier L;Bourget P .Identification and quantitation of antineoplastic compounds in chemotherapeutic infusion bags by use of HPTLC: application to the vinca-alkaloids.[J].Journal of Pharmaceutical and Biomedical Analysis: An International Journal on All Drug-Related Topics in Pharmaceutical, Biomedical and Clinical Analysis,2003(5):1603-1610. |
| [3] | Yao Xu;Wen Hao Fan;Zhi Hong Li;Dong Wu;Yu Han Sun .Antireflective silica thin films with super water repellence via a solgel process[J].Applied optics,2003(1):108-112. |
| [4] | Brambilla, R;Pires, GP;dos Santos, JHZ;Miranda, MSL;Chornik, B .Octadecylsilane-modified silicas prepared by grafting and sol-gel methods[J].Journal of Electron Spectroscopy and Related Phenomena,2007(0):413-420. |
| [5] | Brambilla, R;Pires, GP;da Silveira, NP;dos Santos, JHZ;Miranda, MSL;Frost, RL .Spherical and lamellar octadecylsilane hybrid silicas[J].Journal of Non-Crystalline Solids,2008(45/46):5033-5040. |
| [6] | Shi-Ing Huang;Yi-Ju Shen;Hui Chen .Study on the hydrophobic surfaces prepared by two-step sol-gel process[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2009(15):7040-7046. |
| [7] | Piret, F;Kwon, YU;Su, BL .Silica colloidal crystals with uni- and multi-photonic bandgaps and controlled reflective properties[J].Chemical Physics Letters,2009(4/6):207-211. |
| [8] | Phani AR;Passacantando M;Santucci S .Structural, compositional, thermal resistant and hydro-oleophobic properties of fluorine based block-co-polymer films on quartz substrates by wet chemical process[J].The journal of physics and chemistry of solids,2006(8):1703-1711. |
| [9] | Rob J. Klein;P. Maarten Biesheuvel;Ben C. Yu;Carl D. Meinhart;Fred F. Lange .Producing super-hydrophobic surfaces with nano-silica spheres[J].Zeitschrift fur Metallkunde,2003(4):377-380. |
| [10] | Wang HX;Fang J;Cheng T;Ding J;Qu LT;Dai LM;Wang XG;Lin T .One-step coating of fluoro-containing silica nanoparticles for universal generation of surface superhydrophobicity[J].Chemical communications,2008(7):877-879. |
| [11] | 刘瑞丽 .改性氧化硅溶胶-凝胶过程的动力学研究[D].中国科学院山西煤炭化学研究所,2004. |
| [12] | 王飞,韦奇,王艳丽,于春晓,钟振兴,李群艳,聂祚仁.碳氟基团修饰的疏水微孔二氧化硅膜的制备与表征[J].化学学报,2008(01):44-48. |
| [13] | Zhang L;Oh CF .Infrared absorption enhancement of fluorinated poly-acrylate thin films on Co-alloy substrate[J].Surface and Interface Analysis: SIA: An International Journal Devoted to the Development and Application of Techniques for the Analysis of Surfaces, Interfaces and Thin Films,2006(5):949-956. |
| [14] | Ji-In Jung;Jae Young Bae;Byeong-Soo Bae .Characterization and mesostructure control of mesoporous fluorinated organosilicate films[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,2004(13):1988-1994. |
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