共查询到20条相似文献,搜索用时 62 毫秒
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角蛋白在生物材料中的应用 总被引:1,自引:0,他引:1
结合角蛋白自身特殊的结构及其性能,介绍了角蛋白的提取方法,如机械法、酸碱法、还原法、氧化法和金属盐法等;重点综述了角蛋白及其改性产品在生物材料中的应用,如角蛋白可以作为骨折内固定棒、人工腱、烧伤敷料、注射生物复合填充材料等;最后展望了角蛋白的应用前景和发展方向. 相似文献
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高分子生物材料的研究进展 总被引:4,自引:0,他引:4
综述了含酯锭和酰胺锭以及酯锭和酰胺锭混合锭的高分子生物材料的合成、改性以及生物相容性等方面的研究成果。富含亲水基团的可降解以及降解产物可被生物体吸收或代谢的高分子材料可满足组织工程的需要,含可偶联蛋白分子、药物分子活性基团的高分子生物材料将有更大的应用潜力. 相似文献
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采用共沉淀法制备了纳米羟基磷灰石.胶原蛋白.壳聚糖复合生物材料,用IR、XRD、TEM及万能材料实验机等方法对材料性能进行了分析表征。结果表明:羟基磷灰石.胶原蛋白.壳聚糖复合生物材料在晶相组成、化学成分、羟基磷灰石尺寸上具有类骨结构,并具有良好的力学性能.其抗压强度达到128MPa,可满足骨组织修复与替代的要求。有望成为治疗骨缺损的承力替代物。 相似文献
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纳米无机阻燃剂在聚合物基复合材料中的应用研究进展 总被引:2,自引:0,他引:2
本文分析了传统无机阻燃剂超细化研究现状,详细讨论了近年来发展起来的新型聚合物/层状硅酸盐纳米复合材料的研究现状,综述了其在合成方法,阻燃性能等方面的最新进展,并预测了其应用前景。 相似文献
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纳米生物材料及其界面特性对成骨细胞生长影响的研究进展 总被引:1,自引:0,他引:1
目前传统生物材料并没有诱发适当的细胞响应,进而再生足够的骨以便使材料/器械维持相当长时间.纳米生物材料可能成为骨修复植入材料的另一选择.从拓扑结构、表面化学和表面亲/疏水性等方面综述了新型纳米材料的界面特性对成骨细胞生长和功能表达的影响.讨论了在骨修复应用中使用纳米生物材料潜在的挑战. 相似文献
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复合纳米生物医用材料的研究 总被引:3,自引:0,他引:3
生物医用材料领域中,细胞与材料间的相互作用是研究的主要课题.材料表面的微观结构对细胞的生物调控作用更为重要.纳米材料因具有一些独特的效应,如体积效应和表面效应,有利于细胞黏附、增殖和功能表达,因而作为生物医用材料特别是组织工程支架材料具有良好的应用前景.目前用于生物医用研究的纳米材料主要有无机纳米材料、高分子纳米材料以及复合纳米材料等.仿生纳米材料的研究和利用极大地促进了组织工程学的发展.本文就近年来纳米材料在生物医用材料尤其是组织工程支架材料中的应用研究现状进行了综述. 相似文献
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Titanium Alloys for Aerospace Applications 总被引:1,自引:0,他引:1
There is probably no other material more closely related to aerospace than titanium and its alloys. With a density of 4.5g/cm3, titanium alloys are only about half as heavy as steel or Ni‐based superalloys, yielding an excellent strength‐to‐weight ratio. Furthermore, they have exceptional corrosion resistance. The use of titanium alloys in the aerospace sector will be highlighted including airframe, engine, helicopter, and space applications. 相似文献
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溶胶-凝胶工艺在材料科学中的应用 总被引:1,自引:0,他引:1
溶胶-凝胶工艺是一种很有发展前途的材料制备方法,与传统的材料制备工艺相比,它具有许多优越性:如工艺过程温度低,产品成分均匀,纯度较高等,近年来已在材料科学的许多领域中得到广泛的应用。本文简要地综述了近年来溶胶-凝胶工艺在电子陶瓷、光学、热学、化学、以及复合材料等领域中的应用。 相似文献
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Polymer nanocomposites may provide significantly increased modulus, gas barrier, thermal performance, atomic oxygen resistance, resistance to small molecule permeation and improved ablative performance when compared to typical traditional carbon‐fiber‐reinforced polymeric composites. This presentation gives a review on both theoretical and experimental investigations extracting valuable fundamental elements including field emission, thermal stability, and electrical, optical and mechanical properties of polymer nanocomposites for aerospace applicability. 相似文献
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Nanocomposite polymers have tremendous potential to enhance the performance of macromolecular materials used for composite matrices. Effective utilization of carbon nanotubes in composite applications depends strongly on the ability to homogeneously disperse them throughout the matrix without destroying their integrity. This work looks at the fabrication for montmorillonite, fullerenes and nanotubes polymer/nanocomposites tailored to fit aerospace needs. Further insight is also given on developments in nanofibers and nanotubes production for good load transfer on the composite systems. 相似文献
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Development of several advanced miscroscopic and sprectroscopic techniques have played a key role in the development of characterization and parametric studies of polymer nanocomposites starting from the molecular level. The main issues affecting the production of good quality composites are fiber alignment, fiber‐matrix adhesion and fiber dispersion which makes characterization so vital. The current work reviews the ongoing investigations and techniques to overcome the challenges posed by polymer nanocomposites characterization. 相似文献
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Hydrogels are the most relevant biochemical scaffold due to their tunable properties, inherent biocompatibility, and similarity with tissue and cell environments. Over the past decade, hydrogels have developed from static materials to “smart” responsive materials adapting to various stimuli, such as pH, temperature, chemical, electrical, or light. Light stimulation is particularly interesting for many applications because of the capability of contact‐free remote manipulation of biomaterial properties and inherent spatial and temporal control. Moreover, light can be finely adjusted in its intrinsic properties, such as wavelength and intensity (i.e., the energy of an individual photon as well as the number of photons over time). Water is almost transparent for light in the photochemically relevant range (NIR–UV), thus hydrogels are well‐suited scaffolds for light‐responsive functionality. Hydrogels' chemical and physical variety combined with light responsiveness makes photoresponsive hydrogels ideal candidates for applications in several fields, ranging from biomaterials, medicine to soft robotics. Herein, the progress and new developments in the field of light‐responsive hydrogels are elaborated by first introducing the relevant photochemistries before discussing selected applications in detail. 相似文献
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医用钛合金及其表面改性 总被引:12,自引:0,他引:12
目前钛合金被广泛应用于医学领域,如矫形用种植体。简要综述了新型医用钛合金的开发以及钛合金表面改性提高其表面生物活性和耐磨性能的研究进展。 相似文献