静电纺丝英文

Electrospinning 在 1,1,1,3,3,3 hexafluoro 的 -2 propanol 的是调查捏造生物所能分解的和 biomimetic 为薄的纱织品奈米结构脚手架工程学了。 那electrospun PGA/甲壳素混和奈米纤维的形态学与一一起调查领域散发扫描电子显微镜。 PGA/甲壳素混和纤维有平均大约 140个 nm 的直径, 和他们的直径有分配在范围 50-350个 nm 中。 PGA/甲壳素混和纤维的可混和性是调查被差别的扫描热量测定。 PGA 和甲壳素是不能相混合的在那当做-织成的 nanofibrous 结构。 一在 vitro 中PGA/甲壳素的降格研究混和奈米纤维是引导在磷酸盐-缓冲盐的, 酸碱质 7.2. 它是发现那一个 PGA 的 hydrolytic 劈开在那混和奈米纤维是加速的被共存水生植物甲壳素。 对化验 cytocompatibility 和在 PGA/甲壳素混和 nanofibrous 上的细胞行为脚手架, 细胞附着而且常态人类表皮性的纤维母细胞的传布播种在脚手架上是有计划的。 我们的结果指出 PGA/甲壳素混和 nanofibrous 点阵式, 特别地那一个哪一包含了 25% PGA 和 75%甲壳素用牛族的浆液蛋白质涂料，可能是薄的纱织品工程脚手架的一位善行候选人, 因为它有一个优良的细胞附着而且为常态传布人类纤维母细胞

In this paper, by using sol gel method with zinc acetate, Zn ( CH3COO )2,2H2O as raw materials, ethanol and ammonia water as solvent, polyvinylpyrrolidone ( PVP ) as the complexing agent for precursor solution, and then use the electrospinning of PVP/Zn ( CH3COO )2precursor fiber, by calcination with the microporous structure of zinc oxide ( ZnO ) micro / nano fiber. On this basis, using a single axis electrospinning of ZnO hollow nano fiber. Using XRD and SEM for the preparation of fiber composition and morphology were characterized. The test results showed that: PVP / Zn ( CH3COO )2fiber surface is smooth, the diameter is about 300-700nm, calcined fibers about 200 nm in diameter, XRD results show that sintering after ZnO at six sides of wurtzite structure. Electrostatic spinning nano fiber and preparation of ZnO structural characterization ( topic)

[Abstract]: Objective: To make use of electric spinning method for preparation of E. coli phage template molecular imprinting polymer film. Requirements in this experiment are familiar with the whole process of scientific research, including data collection, the subject design, the experimental operation and the writing of professional papers. At the same time improve the thinking ability of students to scientific research and practical hands-capacity.Methods: PEG precipitation + chloroform extraction purification of phage enrichment after reaching 1012/ml, by adjusting the concentration of PVA, flow, voltage, and other conditions of the high spinning, film prepared by scanning electron microscopy (SEM) observation of spin silk solution concentration, flow rate, voltage, and other high fiber spinning conditions on morphology and diameter of the impact. Electrospinning technology use in the above conditions and explore the preparation of a PVA for the "shell", E. coli phage as a "core" of the molecularly imprinted membrane, and through observation of double-layer agar method Plaque packaged phage detection of biological activity.Results: The success of purification of phage concentration to achieve the above 1012/ml. Groping in the process of the preparation conditions with water as the solvent for the PVA concentration of 7% (w / w) of the membrane 2; in the SM by adding ethanol and, after spinning a very unstable and a large number of broken wires, beads, drip phenomenon, not film, due to time reasons, did not continue, the resulting termination of the experiment. Turn to the morphology of PVA fiber spinning, the diameter, such as PVA concentration, exploring the relationship between voltageCONCLUSION: ① prepared by the observation of a few films The results showed that the concentration of spinning solution with the increase in fiber diameter increases, the distribution of fiber diameter increases; as the voltage increases, fiber diameter did not change significantly.② experiment to make adequate preparations, phage with no spinning PVA polymer matrix to assess the compatibility.[Key words]: phage titer PVA electrospinning