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含有金纳米棒的复合纤维的制备和性能研究


齐 齐 哈 尔 大 学 毕业设计(论文) 题 学 目 院 含有金纳米棒的复合纤维的制备和性能研究 材料科学与工程学院 材料 091 班 代文竹 闫尔云 专业班级 学生姓名 指导教师 成 绩 2013 年 6 月 13 日 齐齐哈尔大学毕业设计(论文) 摘 要 金纳米棒因为具有各向异性,化学性质稳定,合成方法简单,特殊的光电学特性等 很多独特的性质,受到广大研究者的亲睐,广泛应用于生物医学领域(例如药物传输与 控制释放、细胞成像与光热治疗),生物化学传感器,催化剂等领域。在课题中,我们 采用晶种生长法制备分散性好,尺寸均匀的金纳米棒。然后,我们将具有不同长径比的 金纳米棒掺杂到 PVA/CS 溶液中,通过静电纺丝技术制备出含有金纳米棒的复合纤维。 扫描电镜分析表明, 随着金纳米棒长径比的变化, 纤维的直径及其分布没有明显的变化; 纤维形态完好,但是存在些许粘连。接触角测试分析说明,在含有金纳米棒的 PVA/CS 复合纳米纤维中,PVA 含量越大,复合材料的亲水性越好。 关键词:金纳米棒;等离子共振吸收峰;静电纺丝;晶种生长法;复合纳米纤维 I 齐齐哈尔大学毕业设计(论文) Abstract Gold nanorods with anisotropic, stable chemical properties, simple synthesis method and specific photoelectric properties were widely used in drug delivery and release, cell imaging and treatment of field of biological medicine, biological chemical sensors and catalyst, which have received the researchers’ great attention. In this thesis, we used the seed-mediated growth method to prepare well dispersed and uniform gold nanorods. After that, we doped gold nanorods with different aspect ratios into PVA/CS solution and the composite fibers containing gold nanorods were prepared by the electrospinning technique. Scanning electron microscopy (sem) analysis showed that with the change of the aspect ratios of gold nanorods, the diameter and distribution of fibers had no obvious change; the morphology of fibers was in good condition, but there were some adhesion. Contact Angle test showed that in the PVA/CS composite nanofibers containing gold nanorods, the larger the conte

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