Abstract

Resinification of milled waterfowl feathers was attempted via a conventional hot-compression molding and its resinification behavior and the physical properties of the resultant resin were investigated. The hot-compression molding using the wet feather powder was found to be effective to achieve full resinification of the feathers, suppressing its thermal decomposition. The starting milled feathers showed a halo X-ray diffraction (XRD) scattering, indicating the destruction by the milling of the four fold screw crystal structure embedded in the feather microfibrils. Fourier-transform infrared (FTIR) spectroscopic measurements revealed that the amide I peak of the pristine feathers was slightly shifted to the higher wavenumber side by milling or resinification, which means a decrease in the strength of hydrogen bonds between the adjacent β-strands. After the hot-press compression molding, a non-oriented crystalline WAXD peak was clearly recognized again, indicating the partial recrystallization of the feather keratin. The glass transition temperature of the feather keratin resin was estimated at around 120 °C from the onset of the increase of the loss modulus (E″) in the dynamic mechanical analysis (DMA) measurements. Further, it was confirmed that resinification of the milled feathers followed by the hydrothermal treatment could produce a carbonizing precursor having stacked polyaromatic carbon clusters which may be applicable to design a functional electrode.

摘要

通过传统的热压成型尝试对磨碎的水禽羽毛进行树脂化，并研究了其树脂化行为和所得树脂的物理性能。发现使用湿羽毛粉的热压成型可有效实现羽毛的完全树脂化，抑制其热分解。开始研磨的羽毛显示出光晕 X 射线衍射 (XRD) 散射，表明嵌入羽毛微纤维中的四重螺旋晶体结构被研磨破坏。傅里叶变换红外 (FTIR) 光谱测量表明，原始羽毛的酰胺 I 峰通过研磨或树脂化略微向高波数侧移动，这意味着相邻 β 链之间的氢键强度降低。热压成型后，再次清晰地识别出无取向结晶WAXD峰，表明羽毛角蛋白部分再结晶。在动态力学分析 (DMA) 测量中，从损耗模量 (E") 开始增加开始，羽毛角蛋白树脂的玻璃化转变温度估计约为 120 °C。此外，经证实，将磨碎的羽毛树脂化，然后进行水热处理，可以产生具有堆叠多芳族碳簇的碳化前体，其可用于设计功能电极。在动态力学分析 (DMA) 测量中，从损耗模量 (E") 开始增加开始，羽毛角蛋白树脂的玻璃化转变温度估计约为 120 °C。此外，经证实，将磨碎的羽毛树脂化，然后进行水热处理，可以产生具有堆叠多芳族碳簇的碳化前体，其可用于设计功能电极。在动态力学分析 (DMA) 测量中，从损耗模量 (E") 开始增加开始，羽毛角蛋白树脂的玻璃化转变温度估计约为 120 °C。此外，经证实，将磨碎的羽毛树脂化，然后进行水热处理，可以产生具有堆叠多芳族碳簇的碳化前体，其可用于设计功能电极。