Thermal Properties of Spider's Thread
Thermal Properties of Spider's Thread
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蜘蛛丝的热性能
DOI：
10.2476/asjaa.37.69
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发表时间：
1989
影响因子：
--
通讯作者：
S. Osaki
中科院分区：
文献类型：
--
作者：
S. Osaki
用差示扫描量热法（DSC）和热重法（TG）研究了棒形络新妇（Nephila clavata）、八柱菊（Yaginumia sia）和奇异金蛛（Argiope amoena）的拖曳线在20°C ~ 600°C的热性质。用差示扫描量热法（DSC）测定了N.棒形藻在约100 ℃处显示吸热峰。100°C和约100 ° C的放热峰。300、340、500和580°C。前者可归因于水从构成拖曳线的蛋白质上的解吸，而后者可归因于蛋白质的分解。Tce蜘蛛的丝线即使在200°C以上也是稳定的，但在约200 ° C时完全分解。600°C。拖曳线的热性能随季节变化，并取决于性别以及蜘蛛的种类。这种热性能的差异不仅可以归因于物理性能的差异，例如丝的形态、分子量和密度，而且还可以归因于化学结构的差异，例如氨基酸组成。
Thermal properties of drag lines collected from Nephila clavata, Yaginumia sia and Argiope amoena were studied by differential scanning calorimetry (DSC) and thermogravimetry (TG) at temperatures from 20°C to 600°C. The DSC thermograms obtained for N. clavata showed an endothermic peak at ca. 100°C and exothermic peaks at ca. 300, 340, 500 and 580°C. The former could be ascribed to the desorption of water from the protein constituting drag lines and the latter to decomposition of the protein. Tce spider's silk thread was stable even above 200°C but completely decomposed at ca. 600°C. The thermal properties of drag lines were found to change with season and depended on the sex as well as species of the spider. Such difference in the thermal properties may be ascribed to the differences not only in the physical properties such as the morphology of silks, the molecular weight and density but also in the chemical structure such as the amino acid composition.