蛋白质、病毒和DNA等生物体系经常被用来作为模板指导合成纳米材料,但是作为极具应用前景的生物有机材料——蜘蛛丝,很少被用作模板来控制和指导材料的合成.以获取新鲜的蜘蛛丝在气液界面作为模板,采用XRD和SEM等表征手段研究了蜘蛛丝对碳酸钙形貌和晶化过程的控制作用.详细考察了结晶时间、蜘蛛丝的维度和对称性对碳酸钙形貌和晶型的影响.结果表明,在蜘蛛丝模板控制下碳酸钙经历了一个从无定形态到晶态的转变过程,蜘蛛丝自身的维度和对称性对所形成碳酸钙的维度和对称性具有决定性的影响.
Biological systems such as proteins, viruses, and DNA have been most often reported to be used as templates for the synthesis of functional nanomaterials and nanostructure, but the properties of widely available biopolymers, such as nature spider silk, have been much less exploited for this purpose. The results of XRD and SEM show that spider silk have the capacity to control morphology and phase in the process of calcium carbonate crystallization. Hopefully, the mineralized spider silk possessing both desired mechanical properties of spider silk and good biocompatibility of calcium carbonate may be assembled into an ideal biomaterial for bone implants.